DevVGA-SVGA3d-ogl.cpp@ 95231

Last change on this file since 95231 was 95231, checked in by vboxsync, 3 years ago
Devices/Graphics: track constant, vertex, index buffers; clear resource view entriee when surface is deleted. bugref:9830
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1	/* $Id: DevVGA-SVGA3d-ogl.cpp 95231 2022-06-08 15:26:23Z vboxsync $ */
2	/** @file
3	* DevVMWare - VMWare SVGA device
4	*/
5
6	/*
7	* Copyright (C) 2013-2022 Oracle Corporation
8	*
9	* This file is part of VirtualBox Open Source Edition (OSE), as
10	* available from http://www.virtualbox.org. This file is free software;
11	* you can redistribute it and/or modify it under the terms of the GNU
12	* General Public License (GPL) as published by the Free Software
13	* Foundation, in version 2 as it comes in the "COPYING" file of the
14	* VirtualBox OSE distribution. VirtualBox OSE is distributed in the
15	* hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
16	*/
17
18
19	/*********************************************************************************************************************************
20	* Header Files *
21	*********************************************************************************************************************************/
22	/* Enable to disassemble defined shaders. (Windows host only) */
23	#if defined(RT_OS_WINDOWS) && defined(DEBUG) && 0 /* Disabled as we don't have the DirectX SDK avaible atm. */
24	# define DUMP_SHADER_DISASSEMBLY
25	#endif
26	#ifdef DEBUG_bird
27	//# define RTMEM_WRAP_TO_EF_APIS
28	#endif
29	#define LOG_GROUP LOG_GROUP_DEV_VMSVGA
30	#define GL_SILENCE_DEPRECATION /* shut up deprecated warnings on darwin (10.15 sdk) */
31	#include <VBox/vmm/pdmdev.h>
32	#include <VBox/version.h>
33	#include <VBox/err.h>
34	#include <VBox/log.h>
35	#include <VBox/vmm/pgm.h>
36	#include <VBox/AssertGuest.h>
37
38	#include <iprt/assert.h>
39	#include <iprt/semaphore.h>
40	#include <iprt/uuid.h>
41	#include <iprt/mem.h>
42
43	#include <VBoxVideo.h> /* required by DevVGA.h */
44	#include <VBoxVideo3D.h>
45
46	/* should go BEFORE any other DevVGA include to make all DevVGA.h config defines be visible */
47	#include "DevVGA.h"
48
49	#include "DevVGA-SVGA.h"
50	#include "DevVGA-SVGA3d.h"
51	#include "DevVGA-SVGA3d-internal.h"
52
53	#ifdef DUMP_SHADER_DISASSEMBLY
54	# include <d3dx9shader.h>
55	#endif
56
57	#include <stdlib.h>
58	#include <math.h>
59	#include <float.h> /* FLT_MIN */
60
61
62	/*********************************************************************************************************************************
63	* Defined Constants And Macros *
64	*********************************************************************************************************************************/
65	#ifndef VBOX_VMSVGA3D_DEFAULT_OGL_PROFILE
66	# define VBOX_VMSVGA3D_DEFAULT_OGL_PROFILE 1.0
67	#endif
68
69	#ifdef VMSVGA3D_DYNAMIC_LOAD
70	# define OGLGETPROCADDRESS glLdrGetProcAddress
71	#else
72	#ifdef RT_OS_WINDOWS
73	# define OGLGETPROCADDRESS MyWinGetProcAddress
74	DECLINLINE(PROC) MyWinGetProcAddress(const char *pszSymbol)
75	{
76	/* Khronos: [on failure] "some implementations will return other values. 1, 2, and 3 are used, as well as -1". */
77	PROC p = wglGetProcAddress(pszSymbol);
78	if (RT_VALID_PTR(p))
79	return p;
80	return 0;
81	}
82	#elif defined(RT_OS_DARWIN)
83	# include <dlfcn.h>
84	# define OGLGETPROCADDRESS MyNSGLGetProcAddress
85	/** Resolves an OpenGL symbol. */
86	static void MyNSGLGetProcAddress(const char pszSymbol)
87	{
88	/* Another copy in shaderapi.c. */
89	static void *s_pvImage = NULL;
90	if (s_pvImage == NULL)
91	s_pvImage = dlopen("/System/Library/Frameworks/OpenGL.framework/Versions/Current/OpenGL", RTLD_LAZY);
92	return s_pvImage ? dlsym(s_pvImage, pszSymbol) : NULL;
93	}
94
95	#else
96	# define OGLGETPROCADDRESS(x) glXGetProcAddress((const GLubyte *)x)
97	#endif
98	#endif
99
100	/* Invert y-coordinate for OpenGL's bottom left origin. */
101	#define D3D_TO_OGL_Y_COORD(ptrSurface, y_coordinate) (ptrSurface->paMipmapLevels[0].mipmapSize.height - (y_coordinate))
102	#define D3D_TO_OGL_Y_COORD_MIPLEVEL(ptrMipLevel, y_coordinate) (ptrMipLevel->size.height - (y_coordinate))
103
104	/**
105	* Macro for doing something and then checking for errors during initialization.
106	* Uses AssertLogRelMsg.
107	*/
108	#define VMSVGA3D_INIT_CHECKED(a_Expr) \
109	do \
110	{ \
111	a_Expr; \
112	GLenum iGlError = glGetError(); \
113	AssertLogRelMsg(iGlError == GL_NO_ERROR, ("VMSVGA3d: %s -> %#x\n", #a_Expr, iGlError)); \
114	} while (0)
115
116	/**
117	* Macro for doing something and then checking for errors during initialization,
118	* doing the same in the other context when enabled.
119	*
120	* This will try both profiles in dual profile builds. Caller must be in the
121	* default context.
122	*
123	* Uses AssertLogRelMsg to indicate trouble.
124	*/
125	#ifdef VBOX_VMSVGA3D_DUAL_OPENGL_PROFILE
126	# define VMSVGA3D_INIT_CHECKED_BOTH(a_pState, a_pContext, a_pOtherCtx, a_Expr) \
127	do \
128	{ \
129	for (uint32_t i = 0; i < 64; i++) if (glGetError() == GL_NO_ERROR) break; Assert(glGetError() == GL_NO_ERROR); \
130	a_Expr; \
131	GLenum iGlError = glGetError(); \
132	if (iGlError != GL_NO_ERROR) \
133	{ \
134	VMSVGA3D_SET_CURRENT_CONTEXT(a_pState, a_pOtherCtx); \
135	for (uint32_t i = 0; i < 64; i++) if (glGetError() == GL_NO_ERROR) break; Assert(glGetError() == GL_NO_ERROR); \
136	a_Expr; \
137	GLenum iGlError2 = glGetError(); \
138	AssertLogRelMsg(iGlError2 == GL_NO_ERROR, ("VMSVGA3d: %s -> %#x / %#x\n", #a_Expr, iGlError, iGlError2)); \
139	VMSVGA3D_SET_CURRENT_CONTEXT(a_pState, a_pContext); \
140	} \
141	} while (0)
142	#else
143	# define VMSVGA3D_INIT_CHECKED_BOTH(a_pState, a_pContext, a_pOtherCtx, a_Expr) VMSVGA3D_INIT_CHECKED(a_Expr)
144	#endif
145
146
147	/*********************************************************************************************************************************
148	* Global Variables *
149	*********************************************************************************************************************************/
150	/* Define the default light parameters as specified by MSDN. */
151	/** @todo move out; fetched from Wine */
152	const SVGA3dLightData vmsvga3d_default_light =
153	{
154	SVGA3D_LIGHTTYPE_DIRECTIONAL, /* type */
155	false, /* inWorldSpace */
156	{ 1.0f, 1.0f, 1.0f, 0.0f }, /* diffuse r,g,b,a */
157	{ 0.0f, 0.0f, 0.0f, 0.0f }, /* specular r,g,b,a */
158	{ 0.0f, 0.0f, 0.0f, 0.0f }, /* ambient r,g,b,a, */
159	{ 0.0f, 0.0f, 0.0f }, /* position x,y,z */
160	{ 0.0f, 0.0f, 1.0f }, /* direction x,y,z */
161	0.0f, /* range */
162	0.0f, /* falloff */
163	0.0f, 0.0f, 0.0f, /* attenuation 0,1,2 */
164	0.0f, /* theta */
165	0.0f /* phi */
166	};
167
168
169	/*********************************************************************************************************************************
170	* Internal Functions *
171	*********************************************************************************************************************************/
172	static int vmsvga3dContextDestroyOgl(PVGASTATECC pThisCC, PVMSVGA3DCONTEXT pContext, uint32_t cid);
173	static DECLCALLBACK(int) vmsvga3dBackContextDestroy(PVGASTATECC pThisCC, uint32_t cid);
174	static void vmsvgaColor2GLFloatArray(uint32_t color, GLfloat pRed, GLfloat pGreen, GLfloat pBlue, GLfloat pAlpha);
175	static DECLCALLBACK(int) vmsvga3dBackSetLightData(PVGASTATECC pThisCC, uint32_t cid, uint32_t index, SVGA3dLightData *pData);
176	static DECLCALLBACK(int) vmsvga3dBackSetClipPlane(PVGASTATECC pThisCC, uint32_t cid, uint32_t index, float plane[4]);
177	static DECLCALLBACK(int) vmsvga3dBackShaderDestroy(PVGASTATECC pThisCC, uint32_t cid, uint32_t shid, SVGA3dShaderType type);
178	static DECLCALLBACK(int) vmsvga3dBackOcclusionQueryDelete(PVGASTATECC pThisCC, PVMSVGA3DCONTEXT pContext);
179	static DECLCALLBACK(int) vmsvga3dBackCreateTexture(PVGASTATECC pThisCC, PVMSVGA3DCONTEXT pContext, uint32_t idAssociatedContext, PVMSVGA3DSURFACE pSurface);
180
181	/* Generated by VBoxDef2LazyLoad from the VBoxSVGA3D.def and VBoxSVGA3DObjC.def files. */
182	extern "C" int ExplicitlyLoadVBoxSVGA3D(bool fResolveAllImports, PRTERRINFO pErrInfo);
183
184
185	/**
186	* Checks if the given OpenGL extension is supported.
187	*
188	* @returns true if supported, false if not.
189	* @param pState The VMSVGA3d state.
190	* @param rsMinGLVersion The OpenGL version that introduced this feature
191	* into the core.
192	* @param pszWantedExtension The name of the OpenGL extension we want padded
193	* with one space at each end.
194	* @remarks Init time only.
195	*/
196	static bool vmsvga3dCheckGLExtension(PVMSVGA3DSTATE pState, float rsMinGLVersion, const char *pszWantedExtension)
197	{
198	RT_NOREF(rsMinGLVersion);
199	/* check padding. */
200	Assert(pszWantedExtension[0] == ' ');
201	Assert(pszWantedExtension[1] != ' ');
202	Assert(strchr(&pszWantedExtension[1], ' ') + 1 == strchr(pszWantedExtension, '\0'));
203
204	/* Look it up. */
205	bool fRet = false;
206	if (strstr(pState->pszExtensions, pszWantedExtension))
207	fRet = true;
208
209	/* Temporarily. Later start if (rsMinGLVersion != 0.0 && fActualGLVersion >= rsMinGLVersion) return true; */
210	#ifdef RT_OS_DARWIN
211	AssertMsg( rsMinGLVersion == 0.0
212	\|\| fRet == (pState->rsGLVersion >= rsMinGLVersion)
213	\|\| VBOX_VMSVGA3D_DEFAULT_OGL_PROFILE == 2.1,
214	("%s actual:%d min:%d fRet=%d\n",
215	pszWantedExtension, (int)(pState->rsGLVersion * 10), (int)(rsMinGLVersion * 10), fRet));
216	#else
217	AssertMsg(rsMinGLVersion == 0.0 \|\| fRet == (pState->rsGLVersion >= rsMinGLVersion),
218	("%s actual:%d min:%d fRet=%d\n",
219	pszWantedExtension, (int)(pState->rsGLVersion * 10), (int)(rsMinGLVersion * 10), fRet));
220	#endif
221	return fRet;
222	}
223
224
225	/**
226	* Outputs GL_EXTENSIONS list to the release log.
227	*/
228	static void vmsvga3dLogRelExtensions(const char pszPrefix, const char pszExtensions)
229	{
230	/* OpenGL 3.0 interface (glGetString(GL_EXTENSIONS) return NULL). */
231	bool fBuffered = RTLogRelSetBuffering(true);
232
233	/*
234	* Determin the column widths first.
235	*/
236	size_t acchWidths[4] = { 1, 1, 1, 1 };
237	uint32_t i;
238	const char *psz = pszExtensions;
239	for (i = 0; ; i++)
240	{
241	while (*psz == ' ')
242	psz++;
243	if (!*psz)
244	break;
245
246	const char *pszEnd = strchr(psz, ' ');
247	AssertBreak(pszEnd);
248	size_t cch = pszEnd - psz;
249
250	uint32_t iColumn = i % RT_ELEMENTS(acchWidths);
251	if (acchWidths[iColumn] < cch)
252	acchWidths[iColumn] = cch;
253
254	psz = pszEnd;
255	}
256
257	/*
258	* Output it.
259	*/
260	LogRel(("VMSVGA3d: %sOpenGL extensions (%d):", pszPrefix, i));
261	psz = pszExtensions;
262	for (i = 0; ; i++)
263	{
264	while (*psz == ' ')
265	psz++;
266	if (!*psz)
267	break;
268
269	const char *pszEnd = strchr(psz, ' ');
270	AssertBreak(pszEnd);
271	size_t cch = pszEnd - psz;
272
273	uint32_t iColumn = i % RT_ELEMENTS(acchWidths);
274	if (iColumn == 0)
275	LogRel(("\nVMSVGA3d: %-.s", acchWidths[iColumn], cch, psz));
276	else if (iColumn != RT_ELEMENTS(acchWidths) - 1)
277	LogRel((" %-.s", acchWidths[iColumn], cch, psz));
278	else
279	LogRel((" %.*s", cch, psz));
280
281	psz = pszEnd;
282	}
283
284	RTLogRelSetBuffering(fBuffered);
285	LogRel(("\n"));
286	}
287
288	/**
289	* Gathers the GL_EXTENSIONS list, storing it as a space padded list at
290	* @a ppszExtensions.
291	*
292	* @returns VINF_SUCCESS or VERR_NO_STR_MEMORY
293	* @param ppszExtensions Pointer to the string pointer. Free with RTStrFree.
294	* @param fGLProfileVersion The OpenGL profile version.
295	*/
296	static int vmsvga3dGatherExtensions(char **ppszExtensions, float fGLProfileVersion)
297	{
298	int rc;
299	*ppszExtensions = NULL;
300
301	/*
302	* Try the old glGetString interface first.
303	*/
304	const char pszExtensions = (const char )glGetString(GL_EXTENSIONS);
305	if (pszExtensions)
306	{
307	rc = RTStrAAppendExN(ppszExtensions, 3, " ", (size_t)1, pszExtensions, RTSTR_MAX, " ", (size_t)1);
308	AssertLogRelRCReturn(rc, rc);
309	}
310	else
311	{
312	/*
313	* The new interface where each extension string is retrieved separately.
314	* Note! Cannot use VMSVGA3D_INIT_CHECKED_GL_GET_INTEGER_VALUE here because
315	* the above GL_EXTENSIONS error lingers on darwin. sucks.
316	*/
317	#ifndef GL_NUM_EXTENSIONS
318	# define GL_NUM_EXTENSIONS 0x821D
319	#endif
320	GLint cExtensions = 1024;
321	glGetIntegerv(GL_NUM_EXTENSIONS, &cExtensions);
322	Assert(cExtensions != 1024);
323
324	PFNGLGETSTRINGIPROC pfnGlGetStringi = (PFNGLGETSTRINGIPROC)OGLGETPROCADDRESS("glGetStringi");
325	AssertLogRelReturn(pfnGlGetStringi, VERR_NOT_SUPPORTED);
326
327	rc = RTStrAAppend(ppszExtensions, " ");
328	for (GLint i = 0; RT_SUCCESS(rc) && i < cExtensions; i++)
329	{
330	const char pszExt = (const char )pfnGlGetStringi(GL_EXTENSIONS, i);
331	if (pszExt)
332	rc = RTStrAAppendExN(ppszExtensions, 2, pfnGlGetStringi(GL_EXTENSIONS, i), RTSTR_MAX, " ", (size_t)1);
333	}
334	AssertRCReturn(rc, rc);
335	}
336
337	#if 1
338	/*
339	* Add extensions promoted into the core OpenGL profile.
340	*/
341	static const struct
342	{
343	float fGLVersion;
344	const char *pszzExtensions;
345	} s_aPromotedExtensions[] =
346	{
347	{
348	1.1f,
349	" GL_EXT_vertex_array \0"
350	" GL_EXT_polygon_offset \0"
351	" GL_EXT_blend_logic_op \0"
352	" GL_EXT_texture \0"
353	" GL_EXT_copy_texture \0"
354	" GL_EXT_subtexture \0"
355	" GL_EXT_texture_object \0"
356	" GL_ARB_framebuffer_object \0"
357	" GL_ARB_map_buffer_range \0"
358	" GL_ARB_vertex_array_object \0"
359	"\0"
360	},
361	{
362	1.2f,
363	" EXT_texture3D \0"
364	" EXT_bgra \0"
365	" EXT_packed_pixels \0"
366	" EXT_rescale_normal \0"
367	" EXT_separate_specular_color \0"
368	" SGIS_texture_edge_clamp \0"
369	" SGIS_texture_lod \0"
370	" EXT_draw_range_elements \0"
371	"\0"
372	},
373	{
374	1.3f,
375	" GL_ARB_texture_compression \0"
376	" GL_ARB_texture_cube_map \0"
377	" GL_ARB_multisample \0"
378	" GL_ARB_multitexture \0"
379	" GL_ARB_texture_env_add \0"
380	" GL_ARB_texture_env_combine \0"
381	" GL_ARB_texture_env_dot3 \0"
382	" GL_ARB_texture_border_clamp \0"
383	" GL_ARB_transpose_matrix \0"
384	"\0"
385	},
386	{
387	1.5f,
388	" GL_SGIS_generate_mipmap \0"
389	/" GL_NV_blend_equare \0"/
390	" GL_ARB_depth_texture \0"
391	" GL_ARB_shadow \0"
392	" GL_EXT_fog_coord \0"
393	" GL_EXT_multi_draw_arrays \0"
394	" GL_ARB_point_parameters \0"
395	" GL_EXT_secondary_color \0"
396	" GL_EXT_blend_func_separate \0"
397	" GL_EXT_stencil_wrap \0"
398	" GL_ARB_texture_env_crossbar \0"
399	" GL_EXT_texture_lod_bias \0"
400	" GL_ARB_texture_mirrored_repeat \0"
401	" GL_ARB_window_pos \0"
402	"\0"
403	},
404	{
405	1.6f,
406	" GL_ARB_vertex_buffer_object \0"
407	" GL_ARB_occlusion_query \0"
408	" GL_EXT_shadow_funcs \0"
409	},
410	{
411	2.0f,
412	" GL_ARB_shader_objects \0" /??/
413	" GL_ARB_vertex_shader \0" /??/
414	" GL_ARB_fragment_shader \0" /??/
415	" GL_ARB_shading_language_100 \0" /??/
416	" GL_ARB_draw_buffers \0"
417	" GL_ARB_texture_non_power_of_two \0"
418	" GL_ARB_point_sprite \0"
419	" GL_ATI_separate_stencil \0"
420	" GL_EXT_stencil_two_side \0"
421	"\0"
422	},
423	{
424	2.1f,
425	" GL_ARB_pixel_buffer_object \0"
426	" GL_EXT_texture_sRGB \0"
427	"\0"
428	},
429	{
430	3.0f,
431	" GL_ARB_framebuffer_object \0"
432	" GL_ARB_map_buffer_range \0"
433	" GL_ARB_vertex_array_object \0"
434	"\0"
435	},
436	{
437	3.1f,
438	" GL_ARB_copy_buffer \0"
439	" GL_ARB_uniform_buffer_object \0"
440	"\0"
441	},
442	{
443	3.2f,
444	" GL_ARB_vertex_array_bgra \0"
445	" GL_ARB_draw_elements_base_vertex \0"
446	" GL_ARB_fragment_coord_conventions \0"
447	" GL_ARB_provoking_vertex \0"
448	" GL_ARB_seamless_cube_map \0"
449	" GL_ARB_texture_multisample \0"
450	" GL_ARB_depth_clamp \0"
451	" GL_ARB_sync \0"
452	" GL_ARB_geometry_shader4 \0" /??/
453	"\0"
454	},
455	{
456	3.3f,
457	" GL_ARB_blend_func_extended \0"
458	" GL_ARB_sampler_objects \0"
459	" GL_ARB_explicit_attrib_location \0"
460	" GL_ARB_occlusion_query2 \0"
461	" GL_ARB_shader_bit_encoding \0"
462	" GL_ARB_texture_rgb10_a2ui \0"
463	" GL_ARB_texture_swizzle \0"
464	" GL_ARB_timer_query \0"
465	" GL_ARB_vertex_type_2_10_10_10_rev \0"
466	"\0"
467	},
468	{
469	4.0f,
470	" GL_ARB_texture_query_lod \0"
471	" GL_ARB_draw_indirect \0"
472	" GL_ARB_gpu_shader5 \0"
473	" GL_ARB_gpu_shader_fp64 \0"
474	" GL_ARB_shader_subroutine \0"
475	" GL_ARB_tessellation_shader \0"
476	" GL_ARB_texture_buffer_object_rgb32 \0"
477	" GL_ARB_texture_cube_map_array \0"
478	" GL_ARB_texture_gather \0"
479	" GL_ARB_transform_feedback2 \0"
480	" GL_ARB_transform_feedback3 \0"
481	"\0"
482	},
483	{
484	4.1f,
485	" GL_ARB_ES2_compatibility \0"
486	" GL_ARB_get_program_binary \0"
487	" GL_ARB_separate_shader_objects \0"
488	" GL_ARB_shader_precision \0"
489	" GL_ARB_vertex_attrib_64bit \0"
490	" GL_ARB_viewport_array \0"
491	"\0"
492	}
493	};
494
495	uint32_t cPromoted = 0;
496	for (uint32_t i = 0; i < RT_ELEMENTS(s_aPromotedExtensions) && s_aPromotedExtensions[i].fGLVersion <= fGLProfileVersion; i++)
497	{
498	const char *pszExt = s_aPromotedExtensions[i].pszzExtensions;
499	while (*pszExt)
500	{
501	# ifdef VBOX_STRICT
502	size_t cchExt = strlen(pszExt);
503	Assert(cchExt > 3);
504	Assert(pszExt[0] == ' ');
505	Assert(pszExt[1] != ' ');
506	Assert(pszExt[cchExt - 2] != ' ');
507	Assert(pszExt[cchExt - 1] == ' ');
508	# endif
509
510	if (strstr(*ppszExtensions, pszExt) == NULL)
511	{
512	if (cPromoted++ == 0)
513	{
514	rc = RTStrAAppend(ppszExtensions, " <promoted-extensions:> <promoted-extensions:> <promoted-extensions:> ");
515	AssertRCReturn(rc, rc);
516	}
517
518	rc = RTStrAAppend(ppszExtensions, pszExt);
519	AssertRCReturn(rc, rc);
520	}
521
522	pszExt = strchr(pszExt, '\0') + 1;
523	}
524	}
525	#endif
526
527	return VINF_SUCCESS;
528	}
529
530	/** Check whether this is an Intel GL driver.
531	*
532	* @returns true if this seems to be some Intel graphics.
533	*/
534	static bool vmsvga3dIsVendorIntel(void)
535	{
536	return RTStrNICmp((char *)glGetString(GL_VENDOR), "Intel", 5) == 0;
537	}
538
539	/**
540	* @interface_method_impl{VBOXVMSVGASHADERIF,pfnSwitchInitProfile}
541	*/
542	static DECLCALLBACK(void) vmsvga3dShaderIfSwitchInitProfile(PVBOXVMSVGASHADERIF pThis, bool fOtherProfile)
543	{
544	#ifdef VBOX_VMSVGA3D_DUAL_OPENGL_PROFILE
545	PVMSVGA3DSTATE pState = RT_FROM_MEMBER(pThis, VMSVGA3DSTATE, ShaderIf);
546	VMSVGA3D_SET_CURRENT_CONTEXT(pState, pState->papContexts[fOtherProfile ? 2 : 1]);
547	#else
548	NOREF(pThis);
549	NOREF(fOtherProfile);
550	#endif
551	}
552
553
554	/**
555	* @interface_method_impl{VBOXVMSVGASHADERIF,pfnGetNextExtension}
556	*/
557	static DECLCALLBACK(bool) vmsvga3dShaderIfGetNextExtension(PVBOXVMSVGASHADERIF pThis, void **ppvEnumCtx,
558	char *pszBuf, size_t cbBuf, bool fOtherProfile)
559	{
560	PVMSVGA3DSTATE pState = RT_FROM_MEMBER(pThis, VMSVGA3DSTATE, ShaderIf);
561	const char pszCur = ppvEnumCtx ? (const char )ppvEnumCtx
562	: fOtherProfile ? pState->pszOtherExtensions : pState->pszExtensions;
563	while (*pszCur == ' ')
564	pszCur++;
565	if (!*pszCur)
566	return false;
567
568	const char *pszEnd = strchr(pszCur, ' ');
569	AssertReturn(pszEnd, false);
570	size_t cch = pszEnd - pszCur;
571	if (cch < cbBuf)
572	{
573	memcpy(pszBuf, pszCur, cch);
574	pszBuf[cch] = '\0';
575	}
576	else if (cbBuf > 0)
577	{
578	memcpy(pszBuf, "<overflow>", RT_MIN(sizeof("<overflow>"), cbBuf));
579	pszBuf[cbBuf - 1] = '\0';
580	}
581
582	ppvEnumCtx = (void )pszEnd;
583	return true;
584	}
585
586
587	/**
588	* Initializes the VMSVGA3D state during VGA device construction.
589	*
590	* Failure are generally not fatal, 3D support will just be disabled.
591	*
592	* @returns VBox status code.
593	* @param pDevIns The device instance.
594	* @param pThis The shared VGA/VMSVGA state where svga.p3dState will be
595	* modified.
596	* @param pThisCC The VGA/VMSVGA state for ring-3.
597	*/
598	static DECLCALLBACK(int) vmsvga3dBackInit(PPDMDEVINS pDevIns, PVGASTATE pThis, PVGASTATECC pThisCC)
599	{
600	int rc;
601	RT_NOREF(pDevIns, pThis);
602
603	AssertCompile(GL_TRUE == 1);
604	AssertCompile(GL_FALSE == 0);
605
606	#ifdef VMSVGA3D_DYNAMIC_LOAD
607	rc = glLdrInit(pDevIns);
608	if (RT_FAILURE(rc))
609	{
610	LogRel(("VMSVGA3d: Error loading OpenGL library and resolving necessary functions: %Rrc\n", rc));
611	return rc;
612	}
613	#endif
614
615	/*
616	* Load and resolve imports from the external shared libraries.
617	*/
618	RTERRINFOSTATIC ErrInfo;
619	rc = ExplicitlyLoadVBoxSVGA3D(true /fResolveAllImports/, RTErrInfoInitStatic(&ErrInfo));
620	if (RT_FAILURE(rc))
621	{
622	LogRel(("VMSVGA3d: Error loading VBoxSVGA3D and resolving necessary functions: %Rrc - %s\n", rc, ErrInfo.Core.pszMsg));
623	return rc;
624	}
625	#ifdef RT_OS_DARWIN
626	rc = ExplicitlyLoadVBoxSVGA3DObjC(true /fResolveAllImports/, RTErrInfoInitStatic(&ErrInfo));
627	if (RT_FAILURE(rc))
628	{
629	LogRel(("VMSVGA3d: Error loading VBoxSVGA3DObjC and resolving necessary functions: %Rrc - %s\n", rc, ErrInfo.Core.pszMsg));
630	return rc;
631	}
632	#endif
633
634	/*
635	* Allocate the state.
636	*/
637	pThisCC->svga.p3dState = (PVMSVGA3DSTATE)RTMemAllocZ(sizeof(VMSVGA3DSTATE));
638	AssertReturn(pThisCC->svga.p3dState, VERR_NO_MEMORY);
639
640	#ifdef RT_OS_WINDOWS
641	/* Create event semaphore and async IO thread. */
642	PVMSVGA3DSTATE pState = pThisCC->svga.p3dState;
643	rc = RTSemEventCreate(&pState->WndRequestSem);
644	if (RT_SUCCESS(rc))
645	{
646	rc = RTThreadCreate(&pState->pWindowThread, vmsvga3dWindowThread, pState->WndRequestSem, 0, RTTHREADTYPE_GUI, 0,
647	"VMSVGA3DWND");
648	if (RT_SUCCESS(rc))
649	return VINF_SUCCESS;
650
651	/* bail out. */
652	LogRel(("VMSVGA3d: RTThreadCreate failed: %Rrc\n", rc));
653	RTSemEventDestroy(pState->WndRequestSem);
654	}
655	else
656	LogRel(("VMSVGA3d: RTSemEventCreate failed: %Rrc\n", rc));
657	RTMemFree(pThisCC->svga.p3dState);
658	pThisCC->svga.p3dState = NULL;
659	return rc;
660	#else
661	return VINF_SUCCESS;
662	#endif
663	}
664
665	static int vmsvga3dLoadGLFunctions(PVMSVGA3DSTATE pState)
666	{
667	/* A strict approach to get a proc address as recommended by Khronos:
668	* - "If the function is a core OpenGL function, then we need to check the OpenGL version".
669	* - "If the function is an extension, we need to check to see if the extension is supported."
670	*/
671
672	/* Get a function address, return VERR_NOT_IMPLEMENTED on failure. */
673	#define GLGETPROC_(ProcType, ProcName, NameSuffix) do { \
674	pState->ext.ProcName = (ProcType)OGLGETPROCADDRESS(#ProcName NameSuffix); \
675	AssertLogRelMsgReturn(pState->ext.ProcName, (#ProcName NameSuffix " missing"), VERR_NOT_IMPLEMENTED); \
676	} while(0)
677
678	/* Get an optional function address. LogRel on failure. */
679	#define GLGETPROCOPT_(ProcType, ProcName, NameSuffix) do { \
680	pState->ext.ProcName = (ProcType)OGLGETPROCADDRESS(#ProcName NameSuffix); \
681	if (!pState->ext.ProcName) \
682	{ \
683	LogRel(("VMSVGA3d: missing optional %s\n", #ProcName NameSuffix)); \
684	AssertFailed(); \
685	} \
686	} while(0)
687
688	/* OpenGL 2.0 or earlier core. Do not bother with extensions. */
689	GLGETPROC_(PFNGLGENQUERIESPROC , glGenQueries, "");
690	GLGETPROC_(PFNGLDELETEQUERIESPROC , glDeleteQueries, "");
691	GLGETPROC_(PFNGLBEGINQUERYPROC , glBeginQuery, "");
692	GLGETPROC_(PFNGLENDQUERYPROC , glEndQuery, "");
693	GLGETPROC_(PFNGLGETQUERYOBJECTUIVPROC , glGetQueryObjectuiv, "");
694	GLGETPROC_(PFNGLTEXIMAGE3DPROC , glTexImage3D, "");
695	GLGETPROC_(PFNGLTEXSUBIMAGE3DPROC , glTexSubImage3D, "");
696	GLGETPROC_(PFNGLGETCOMPRESSEDTEXIMAGEPROC , glGetCompressedTexImage, "");
697	GLGETPROC_(PFNGLCOMPRESSEDTEXIMAGE2DPROC , glCompressedTexImage2D, "");
698	GLGETPROC_(PFNGLCOMPRESSEDTEXIMAGE3DPROC , glCompressedTexImage3D, "");
699	GLGETPROC_(PFNGLCOMPRESSEDTEXSUBIMAGE2DPROC , glCompressedTexSubImage2D, "");
700	GLGETPROC_(PFNGLCOMPRESSEDTEXSUBIMAGE3DPROC , glCompressedTexSubImage3D, "");
701	GLGETPROC_(PFNGLPOINTPARAMETERFPROC , glPointParameterf, "");
702	GLGETPROC_(PFNGLBLENDEQUATIONSEPARATEPROC , glBlendEquationSeparate, "");
703	GLGETPROC_(PFNGLBLENDFUNCSEPARATEPROC , glBlendFuncSeparate, "");
704	GLGETPROC_(PFNGLSTENCILOPSEPARATEPROC , glStencilOpSeparate, "");
705	GLGETPROC_(PFNGLSTENCILFUNCSEPARATEPROC , glStencilFuncSeparate, "");
706	GLGETPROC_(PFNGLBINDBUFFERPROC , glBindBuffer, "");
707	GLGETPROC_(PFNGLDELETEBUFFERSPROC , glDeleteBuffers, "");
708	GLGETPROC_(PFNGLGENBUFFERSPROC , glGenBuffers, "");
709	GLGETPROC_(PFNGLBUFFERDATAPROC , glBufferData, "");
710	GLGETPROC_(PFNGLMAPBUFFERPROC , glMapBuffer, "");
711	GLGETPROC_(PFNGLUNMAPBUFFERPROC , glUnmapBuffer, "");
712	GLGETPROC_(PFNGLENABLEVERTEXATTRIBARRAYPROC , glEnableVertexAttribArray, "");
713	GLGETPROC_(PFNGLDISABLEVERTEXATTRIBARRAYPROC , glDisableVertexAttribArray, "");
714	GLGETPROC_(PFNGLVERTEXATTRIBPOINTERPROC , glVertexAttribPointer, "");
715	GLGETPROC_(PFNGLACTIVETEXTUREPROC , glActiveTexture, "");
716	/* glGetProgramivARB determines implementation limits for the program
717	* target (GL_FRAGMENT_PROGRAM_ARB, GL_VERTEX_PROGRAM_ARB).
718	* It differs from glGetProgramiv, which returns a parameter from a program object.
719	*/
720	GLGETPROC_(PFNGLGETPROGRAMIVARBPROC , glGetProgramivARB, "");
721	GLGETPROC_(PFNGLFOGCOORDPOINTERPROC , glFogCoordPointer, "");
722	#if VBOX_VMSVGA3D_GL_HACK_LEVEL < 0x102
723	GLGETPROC_(PFNGLBLENDCOLORPROC , glBlendColor, "");
724	GLGETPROC_(PFNGLBLENDEQUATIONPROC , glBlendEquation, "");
725	#endif
726	#if VBOX_VMSVGA3D_GL_HACK_LEVEL < 0x103
727	GLGETPROC_(PFNGLCLIENTACTIVETEXTUREPROC , glClientActiveTexture, "");
728	#endif
729	GLGETPROC_(PFNGLDRAWBUFFERSPROC , glDrawBuffers, "");
730	GLGETPROC_(PFNGLCREATESHADERPROC , glCreateShader, "");
731	GLGETPROC_(PFNGLSHADERSOURCEPROC , glShaderSource, "");
732	GLGETPROC_(PFNGLCOMPILESHADERPROC , glCompileShader, "");
733	GLGETPROC_(PFNGLGETSHADERIVPROC , glGetShaderiv, "");
734	GLGETPROC_(PFNGLGETSHADERINFOLOGPROC , glGetShaderInfoLog, "");
735	GLGETPROC_(PFNGLCREATEPROGRAMPROC , glCreateProgram, "");
736	GLGETPROC_(PFNGLATTACHSHADERPROC , glAttachShader, "");
737	GLGETPROC_(PFNGLLINKPROGRAMPROC , glLinkProgram, "");
738	GLGETPROC_(PFNGLGETPROGRAMIVPROC , glGetProgramiv, "");
739	GLGETPROC_(PFNGLGETPROGRAMINFOLOGPROC , glGetProgramInfoLog, "");
740	GLGETPROC_(PFNGLUSEPROGRAMPROC , glUseProgram, "");
741	GLGETPROC_(PFNGLGETUNIFORMLOCATIONPROC , glGetUniformLocation, "");
742	GLGETPROC_(PFNGLUNIFORM1IPROC , glUniform1i, "");
743	GLGETPROC_(PFNGLUNIFORM4FVPROC , glUniform4fv, "");
744	GLGETPROC_(PFNGLDETACHSHADERPROC , glDetachShader, "");
745	GLGETPROC_(PFNGLDELETESHADERPROC , glDeleteShader, "");
746	GLGETPROC_(PFNGLDELETEPROGRAMPROC , glDeleteProgram, "");
747
748	GLGETPROC_(PFNGLVERTEXATTRIB4FVPROC , glVertexAttrib4fv, "");
749	GLGETPROC_(PFNGLVERTEXATTRIB4UBVPROC , glVertexAttrib4ubv, "");
750	GLGETPROC_(PFNGLVERTEXATTRIB4NUBVPROC , glVertexAttrib4Nubv, "");
751	GLGETPROC_(PFNGLVERTEXATTRIB4SVPROC , glVertexAttrib4sv, "");
752	GLGETPROC_(PFNGLVERTEXATTRIB4NSVPROC , glVertexAttrib4Nsv, "");
753	GLGETPROC_(PFNGLVERTEXATTRIB4NUSVPROC , glVertexAttrib4Nusv, "");
754
755	/* OpenGL 3.0 core, GL_ARB_instanced_arrays. Same functions names in the ARB and core specs. */
756	if ( pState->rsGLVersion >= 3.0f
757	\|\| vmsvga3dCheckGLExtension(pState, 0.0f, " GL_ARB_framebuffer_object "))
758	{
759	GLGETPROC_(PFNGLISRENDERBUFFERPROC , glIsRenderbuffer, "");
760	GLGETPROC_(PFNGLBINDRENDERBUFFERPROC , glBindRenderbuffer, "");
761	GLGETPROC_(PFNGLDELETERENDERBUFFERSPROC , glDeleteRenderbuffers, "");
762	GLGETPROC_(PFNGLGENRENDERBUFFERSPROC , glGenRenderbuffers, "");
763	GLGETPROC_(PFNGLRENDERBUFFERSTORAGEPROC , glRenderbufferStorage, "");
764	GLGETPROC_(PFNGLGETRENDERBUFFERPARAMETERIVPROC , glGetRenderbufferParameteriv, "");
765	GLGETPROC_(PFNGLISFRAMEBUFFERPROC , glIsFramebuffer, "");
766	GLGETPROC_(PFNGLBINDFRAMEBUFFERPROC , glBindFramebuffer, "");
767	GLGETPROC_(PFNGLDELETEFRAMEBUFFERSPROC , glDeleteFramebuffers, "");
768	GLGETPROC_(PFNGLGENFRAMEBUFFERSPROC , glGenFramebuffers, "");
769	GLGETPROC_(PFNGLCHECKFRAMEBUFFERSTATUSPROC , glCheckFramebufferStatus, "");
770	GLGETPROC_(PFNGLFRAMEBUFFERTEXTURE1DPROC , glFramebufferTexture1D, "");
771	GLGETPROC_(PFNGLFRAMEBUFFERTEXTURE2DPROC , glFramebufferTexture2D, "");
772	GLGETPROC_(PFNGLFRAMEBUFFERTEXTURE3DPROC , glFramebufferTexture3D, "");
773	GLGETPROC_(PFNGLFRAMEBUFFERRENDERBUFFERPROC , glFramebufferRenderbuffer, "");
774	GLGETPROC_(PFNGLGETFRAMEBUFFERATTACHMENTPARAMETERIVPROC , glGetFramebufferAttachmentParameteriv, "");
775	GLGETPROC_(PFNGLGENERATEMIPMAPPROC , glGenerateMipmap, "");
776	GLGETPROC_(PFNGLBLITFRAMEBUFFERPROC , glBlitFramebuffer, "");
777	GLGETPROC_(PFNGLRENDERBUFFERSTORAGEMULTISAMPLEPROC , glRenderbufferStorageMultisample, "");
778	GLGETPROC_(PFNGLFRAMEBUFFERTEXTURELAYERPROC , glFramebufferTextureLayer, "");
779	}
780
781	/* OpenGL 3.1 core, GL_ARB_draw_instanced, GL_EXT_draw_instanced. */
782	if (pState->rsGLVersion >= 3.1f)
783	{
784	GLGETPROC_(PFNGLDRAWARRAYSINSTANCEDPROC , glDrawArraysInstanced, "");
785	GLGETPROC_(PFNGLDRAWELEMENTSINSTANCEDPROC , glDrawElementsInstanced, "");
786	}
787	else if (vmsvga3dCheckGLExtension(pState, 0.0f, " GL_ARB_draw_instanced "))
788	{
789	GLGETPROC_(PFNGLDRAWARRAYSINSTANCEDPROC , glDrawArraysInstanced, "ARB");
790	GLGETPROC_(PFNGLDRAWELEMENTSINSTANCEDPROC , glDrawElementsInstanced, "ARB");
791	}
792	else if (vmsvga3dCheckGLExtension(pState, 0.0f, " GL_EXT_draw_instanced "))
793	{
794	GLGETPROC_(PFNGLDRAWARRAYSINSTANCEDPROC , glDrawArraysInstanced, "EXT");
795	GLGETPROC_(PFNGLDRAWELEMENTSINSTANCEDPROC , glDrawElementsInstanced, "EXT");
796	}
797
798	/* OpenGL 3.2 core, GL_ARB_draw_elements_base_vertex. Same functions names in the ARB and core specs. */
799	if ( pState->rsGLVersion >= 3.2f
800	\|\| vmsvga3dCheckGLExtension(pState, 0.0f, " GL_ARB_draw_elements_base_vertex "))
801	{
802	GLGETPROC_(PFNGLDRAWELEMENTSBASEVERTEXPROC , glDrawElementsBaseVertex, "");
803	GLGETPROC_(PFNGLDRAWELEMENTSINSTANCEDBASEVERTEXPROC , glDrawElementsInstancedBaseVertex, "");
804	}
805
806	/* Optional. OpenGL 3.2 core, GL_ARB_provoking_vertex. Same functions names in the ARB and core specs. */
807	if ( pState->rsGLVersion >= 3.2f
808	\|\| vmsvga3dCheckGLExtension(pState, 0.0f, " GL_ARB_provoking_vertex "))
809	{
810	GLGETPROCOPT_(PFNGLPROVOKINGVERTEXPROC , glProvokingVertex, "");
811	}
812
813	/* OpenGL 3.3 core, GL_ARB_instanced_arrays. */
814	if (pState->rsGLVersion >= 3.3f)
815	{
816	GLGETPROC_(PFNGLVERTEXATTRIBDIVISORPROC , glVertexAttribDivisor, "");
817	}
818	else if (vmsvga3dCheckGLExtension(pState, 0.0f, " GL_ARB_instanced_arrays "))
819	{
820	GLGETPROC_(PFNGLVERTEXATTRIBDIVISORARBPROC , glVertexAttribDivisor, "ARB");
821	}
822
823	#undef GLGETPROCOPT_
824	#undef GLGETPROC_
825
826	return VINF_SUCCESS;
827	}
828
829
830	DECLINLINE(GLenum) vmsvga3dCubemapFaceFromIndex(uint32_t iFace)
831	{
832	GLint Face;
833	switch (iFace)
834	{
835	case 0: Face = GL_TEXTURE_CUBE_MAP_POSITIVE_X; break;
836	case 1: Face = GL_TEXTURE_CUBE_MAP_NEGATIVE_X; break;
837	case 2: Face = GL_TEXTURE_CUBE_MAP_POSITIVE_Y; break;
838	case 3: Face = GL_TEXTURE_CUBE_MAP_NEGATIVE_Y; break;
839	case 4: Face = GL_TEXTURE_CUBE_MAP_POSITIVE_Z; break;
840	default:
841	case 5: Face = GL_TEXTURE_CUBE_MAP_NEGATIVE_Z; break;
842	}
843	return Face;
844	}
845
846
847	/* We must delay window creation until the PowerOn phase. Init is too early and will cause failures. */
848	static DECLCALLBACK(int) vmsvga3dBackPowerOn(PPDMDEVINS pDevIns, PVGASTATE pThis, PVGASTATECC pThisCC)
849	{
850	PVMSVGA3DSTATE pState = pThisCC->svga.p3dState;
851	AssertReturn(pThisCC->svga.p3dState, VERR_NO_MEMORY);
852	PVMSVGA3DCONTEXT pContext;
853	#ifdef VBOX_VMSVGA3D_DUAL_OPENGL_PROFILE
854	PVMSVGA3DCONTEXT pOtherCtx;
855	#endif
856	int rc;
857	RT_NOREF(pDevIns, pThis);
858
859	if (pState->rsGLVersion != 0.0)
860	return VINF_SUCCESS; /* already initialized (load state) */
861
862	/*
863	* OpenGL function calls aren't possible without a valid current context, so create a fake one here.
864	*/
865	rc = vmsvga3dContextDefineOgl(pThisCC, 1, VMSVGA3D_DEF_CTX_F_INIT);
866	AssertRCReturn(rc, rc);
867
868	pContext = pState->papContexts[1];
869	VMSVGA3D_SET_CURRENT_CONTEXT(pState, pContext);
870
871	#ifdef VMSVGA3D_DYNAMIC_LOAD
872	/* Context is set and it is possible now to resolve extension functions. */
873	rc = glLdrGetExtFunctions(pDevIns);
874	if (RT_FAILURE(rc))
875	{
876	LogRel(("VMSVGA3d: Error resolving extension functions: %Rrc\n", rc));
877	return rc;
878	}
879	#endif
880
881	LogRel(("VMSVGA3d: OpenGL version: %s\n"
882	"VMSVGA3d: OpenGL Vendor: %s\n"
883	"VMSVGA3d: OpenGL Renderer: %s\n"
884	"VMSVGA3d: OpenGL shader language version: %s\n",
885	glGetString(GL_VERSION), glGetString(GL_VENDOR), glGetString(GL_RENDERER),
886	glGetString(GL_SHADING_LANGUAGE_VERSION)));
887
888	rc = vmsvga3dGatherExtensions(&pState->pszExtensions, VBOX_VMSVGA3D_DEFAULT_OGL_PROFILE);
889	AssertRCReturn(rc, rc);
890	vmsvga3dLogRelExtensions("", pState->pszExtensions);
891
892	pState->rsGLVersion = atof((const char *)glGetString(GL_VERSION));
893
894
895	#ifdef VBOX_VMSVGA3D_DUAL_OPENGL_PROFILE
896	/*
897	* Get the extension list for the alternative profile so we can better
898	* figure out the shader model and stuff.
899	*/
900	rc = vmsvga3dContextDefineOgl(pThisCC, 2, VMSVGA3D_DEF_CTX_F_INIT \| VMSVGA3D_DEF_CTX_F_OTHER_PROFILE);
901	AssertLogRelRCReturn(rc, rc);
902	pContext = pState->papContexts[1]; /* Array may have been reallocated. */
903
904	pOtherCtx = pState->papContexts[2];
905	VMSVGA3D_SET_CURRENT_CONTEXT(pState, pOtherCtx);
906
907	LogRel(("VMSVGA3d: Alternative OpenGL version: %s\n"
908	"VMSVGA3d: Alternative OpenGL Vendor: %s\n"
909	"VMSVGA3d: Alternative OpenGL Renderer: %s\n"
910	"VMSVGA3d: Alternative OpenGL shader language version: %s\n",
911	glGetString(GL_VERSION), glGetString(GL_VENDOR), glGetString(GL_RENDERER),
912	glGetString(GL_SHADING_LANGUAGE_VERSION)));
913
914	rc = vmsvga3dGatherExtensions(&pState->pszOtherExtensions, VBOX_VMSVGA3D_OTHER_OGL_PROFILE);
915	AssertRCReturn(rc, rc);
916	vmsvga3dLogRelExtensions("Alternative ", pState->pszOtherExtensions);
917
918	pState->rsOtherGLVersion = atof((const char *)glGetString(GL_VERSION));
919
920	VMSVGA3D_SET_CURRENT_CONTEXT(pState, pContext);
921	#else
922	pState->pszOtherExtensions = (char *)"";
923	pState->rsOtherGLVersion = pState->rsGLVersion;
924	#endif
925
926	/*
927	* Resolve GL function pointers and store them in pState->ext.
928	*/
929	rc = vmsvga3dLoadGLFunctions(pState);
930	if (RT_FAILURE(rc))
931	{
932	LogRel(("VMSVGA3d: missing required OpenGL function or extension; aborting\n"));
933	return rc;
934	}
935
936	/*
937	* Initialize the capabilities with sensible defaults.
938	*/
939	pState->caps.maxActiveLights = 1;
940	pState->caps.maxTextures = 1;
941	pState->caps.maxClipDistances = 4;
942	pState->caps.maxColorAttachments = 1;
943	pState->caps.maxRectangleTextureSize = 2048;
944	pState->caps.maxTextureAnisotropy = 1;
945	pState->caps.maxVertexShaderInstructions = 1024;
946	pState->caps.maxFragmentShaderInstructions = 1024;
947	pState->caps.vertexShaderVersion = SVGA3DVSVERSION_NONE;
948	pState->caps.fragmentShaderVersion = SVGA3DPSVERSION_NONE;
949	pState->caps.flPointSize[0] = 1;
950	pState->caps.flPointSize[1] = 1;
951
952	/*
953	* Query capabilities
954	*/
955	pState->caps.fS3TCSupported = vmsvga3dCheckGLExtension(pState, 0.0f, " GL_EXT_texture_compression_s3tc ");
956	pState->caps.fTextureFilterAnisotropicSupported = vmsvga3dCheckGLExtension(pState, 0.0f, " GL_EXT_texture_filter_anisotropic ");
957
958	VMSVGA3D_INIT_CHECKED_BOTH(pState, pContext, pOtherCtx, glGetIntegerv(GL_MAX_LIGHTS, &pState->caps.maxActiveLights));
959	VMSVGA3D_INIT_CHECKED_BOTH(pState, pContext, pOtherCtx, glGetIntegerv(GL_MAX_TEXTURE_UNITS_ARB, &pState->caps.maxTextures));
960	#ifdef VBOX_VMSVGA3D_DUAL_OPENGL_PROFILE /* The alternative profile has a higher number here (ati/darwin). */
961	VMSVGA3D_SET_CURRENT_CONTEXT(pState, pOtherCtx);
962	VMSVGA3D_INIT_CHECKED_BOTH(pState, pOtherCtx, pContext, glGetIntegerv(GL_MAX_CLIP_DISTANCES, &pState->caps.maxClipDistances));
963	VMSVGA3D_SET_CURRENT_CONTEXT(pState, pContext);
964	#else
965	VMSVGA3D_INIT_CHECKED(glGetIntegerv(GL_MAX_CLIP_DISTANCES, &pState->caps.maxClipDistances));
966	#endif
967	VMSVGA3D_INIT_CHECKED(glGetIntegerv(GL_MAX_COLOR_ATTACHMENTS, &pState->caps.maxColorAttachments));
968	VMSVGA3D_INIT_CHECKED(glGetIntegerv(GL_MAX_RECTANGLE_TEXTURE_SIZE, &pState->caps.maxRectangleTextureSize));
969	if (pState->caps.fTextureFilterAnisotropicSupported)
970	VMSVGA3D_INIT_CHECKED(glGetIntegerv(GL_MAX_TEXTURE_MAX_ANISOTROPY_EXT, &pState->caps.maxTextureAnisotropy));
971	VMSVGA3D_INIT_CHECKED_BOTH(pState, pContext, pOtherCtx, glGetFloatv(GL_ALIASED_POINT_SIZE_RANGE, pState->caps.flPointSize));
972
973	VMSVGA3D_INIT_CHECKED_BOTH(pState, pContext, pOtherCtx,
974	pState->ext.glGetProgramivARB(GL_FRAGMENT_PROGRAM_ARB, GL_MAX_PROGRAM_NATIVE_TEMPORARIES_ARB,
975	&pState->caps.maxFragmentShaderTemps));
976	VMSVGA3D_INIT_CHECKED_BOTH(pState, pContext, pOtherCtx,
977	pState->ext.glGetProgramivARB(GL_FRAGMENT_PROGRAM_ARB, GL_MAX_PROGRAM_NATIVE_INSTRUCTIONS_ARB,
978	&pState->caps.maxFragmentShaderInstructions));
979	VMSVGA3D_INIT_CHECKED_BOTH(pState, pContext, pOtherCtx,
980	pState->ext.glGetProgramivARB(GL_VERTEX_PROGRAM_ARB, GL_MAX_PROGRAM_NATIVE_TEMPORARIES_ARB,
981	&pState->caps.maxVertexShaderTemps));
982	VMSVGA3D_INIT_CHECKED_BOTH(pState, pContext, pOtherCtx,
983	pState->ext.glGetProgramivARB(GL_VERTEX_PROGRAM_ARB, GL_MAX_PROGRAM_NATIVE_INSTRUCTIONS_ARB,
984	&pState->caps.maxVertexShaderInstructions));
985
986	/* http://http://www.opengl.org/wiki/Detecting_the_Shader_Model
987	* ARB Assembly Language
988	* These are done through testing the presence of extensions. You should test them in this order:
989	* GL_NV_gpu_program4: SM 4.0 or better.
990	* GL_NV_vertex_program3: SM 3.0 or better.
991	* GL_ARB_fragment_program: SM 2.0 or better.
992	* ATI does not support higher than SM 2.0 functionality in assembly shaders.
993	*
994	*/
995	/** @todo distinguish between vertex and pixel shaders??? */
996	#ifdef VBOX_VMSVGA3D_DUAL_OPENGL_PROFILE /* The alternative profile has a higher number here (ati/darwin). */
997	VMSVGA3D_SET_CURRENT_CONTEXT(pState, pOtherCtx);
998	const char pszShadingLanguageVersion = (const char )glGetString(GL_SHADING_LANGUAGE_VERSION);
999	VMSVGA3D_SET_CURRENT_CONTEXT(pState, pContext);
1000	#else
1001	const char pszShadingLanguageVersion = (const char )glGetString(GL_SHADING_LANGUAGE_VERSION);
1002	#endif
1003	float v = pszShadingLanguageVersion ? atof(pszShadingLanguageVersion) : 0.0f;
1004	if ( vmsvga3dCheckGLExtension(pState, 0.0f, " GL_NV_gpu_program4 ")
1005	\|\| strstr(pState->pszOtherExtensions, " GL_NV_gpu_program4 "))
1006	{
1007	pState->caps.vertexShaderVersion = SVGA3DVSVERSION_40;
1008	pState->caps.fragmentShaderVersion = SVGA3DPSVERSION_40;
1009	}
1010	else
1011	if ( vmsvga3dCheckGLExtension(pState, 0.0f, " GL_NV_vertex_program3 ")
1012	\|\| strstr(pState->pszOtherExtensions, " GL_NV_vertex_program3 ")
1013	\|\| vmsvga3dCheckGLExtension(pState, 0.0f, " GL_ARB_shader_texture_lod ") /* Wine claims this suggests SM 3.0 support */
1014	\|\| strstr(pState->pszOtherExtensions, " GL_ARB_shader_texture_lod ")
1015	)
1016	{
1017	pState->caps.vertexShaderVersion = SVGA3DVSVERSION_30;
1018	pState->caps.fragmentShaderVersion = SVGA3DPSVERSION_30;
1019	}
1020	else
1021	if ( vmsvga3dCheckGLExtension(pState, 0.0f, " GL_ARB_fragment_program ")
1022	\|\| strstr(pState->pszOtherExtensions, " GL_ARB_fragment_program "))
1023	{
1024	pState->caps.vertexShaderVersion = SVGA3DVSVERSION_20;
1025	pState->caps.fragmentShaderVersion = SVGA3DPSVERSION_20;
1026	}
1027	else
1028	{
1029	LogRel(("VMSVGA3D: WARNING: unknown support for assembly shaders!!\n"));
1030	pState->caps.vertexShaderVersion = SVGA3DVSVERSION_11;
1031	pState->caps.fragmentShaderVersion = SVGA3DPSVERSION_11;
1032	}
1033
1034	/* Now check the shading language version, in case it indicates a higher supported version. */
1035	if (v >= 3.30f)
1036	{
1037	pState->caps.vertexShaderVersion = RT_MAX(pState->caps.vertexShaderVersion, SVGA3DVSVERSION_40);
1038	pState->caps.fragmentShaderVersion = RT_MAX(pState->caps.fragmentShaderVersion, SVGA3DPSVERSION_40);
1039	}
1040	else
1041	if (v >= 1.20f)
1042	{
1043	pState->caps.vertexShaderVersion = RT_MAX(pState->caps.vertexShaderVersion, SVGA3DVSVERSION_20);
1044	pState->caps.fragmentShaderVersion = RT_MAX(pState->caps.fragmentShaderVersion, SVGA3DPSVERSION_20);
1045	}
1046
1047	if ( !vmsvga3dCheckGLExtension(pState, 0.0f, " GL_ARB_vertex_array_bgra ")
1048	&& !vmsvga3dCheckGLExtension(pState, 0.0f, " GL_EXT_vertex_array_bgra "))
1049	{
1050	LogRel(("VMSVGA3D: WARNING: Missing required extension GL_ARB_vertex_array_bgra (d3dcolor)!!!\n"));
1051	}
1052
1053	/*
1054	* Tweak capabilities.
1055	*/
1056	/* Intel Windows drivers return 31, while the guest expects 32 at least. */
1057	if ( pState->caps.maxVertexShaderTemps < 32
1058	&& vmsvga3dIsVendorIntel())
1059	pState->caps.maxVertexShaderTemps = 32;
1060
1061	#if 0
1062	SVGA3D_DEVCAP_MAX_FIXED_VERTEXBLEND = 11,
1063	SVGA3D_DEVCAP_QUERY_TYPES = 15,
1064	SVGA3D_DEVCAP_TEXTURE_GRADIENT_SAMPLING = 16,
1065	SVGA3D_DEVCAP_MAX_POINT_SIZE = 17,
1066	SVGA3D_DEVCAP_MAX_SHADER_TEXTURES = 18,
1067	SVGA3D_DEVCAP_MAX_VOLUME_EXTENT = 21,
1068	SVGA3D_DEVCAP_MAX_TEXTURE_REPEAT = 22,
1069	SVGA3D_DEVCAP_MAX_TEXTURE_ASPECT_RATIO = 23,
1070	SVGA3D_DEVCAP_MAX_TEXTURE_ANISOTROPY = 24,
1071	SVGA3D_DEVCAP_MAX_PRIMITIVE_COUNT = 25,
1072	SVGA3D_DEVCAP_MAX_VERTEX_INDEX = 26,
1073	SVGA3D_DEVCAP_MAX_FRAGMENT_SHADER_INSTRUCTIONS = 28,
1074	SVGA3D_DEVCAP_MAX_VERTEX_SHADER_TEMPS = 29,
1075	SVGA3D_DEVCAP_MAX_FRAGMENT_SHADER_TEMPS = 30,
1076	SVGA3D_DEVCAP_TEXTURE_OPS = 31,
1077	SVGA3D_DEVCAP_SURFACEFMT_X8R8G8B8 = 32,
1078	SVGA3D_DEVCAP_SURFACEFMT_A8R8G8B8 = 33,
1079	SVGA3D_DEVCAP_SURFACEFMT_A2R10G10B10 = 34,
1080	SVGA3D_DEVCAP_SURFACEFMT_X1R5G5B5 = 35,
1081	SVGA3D_DEVCAP_SURFACEFMT_A1R5G5B5 = 36,
1082	SVGA3D_DEVCAP_SURFACEFMT_A4R4G4B4 = 37,
1083	SVGA3D_DEVCAP_SURFACEFMT_R5G6B5 = 38,
1084	SVGA3D_DEVCAP_SURFACEFMT_LUMINANCE16 = 39,
1085	SVGA3D_DEVCAP_SURFACEFMT_LUMINANCE8_ALPHA8 = 40,
1086	SVGA3D_DEVCAP_SURFACEFMT_ALPHA8 = 41,
1087	SVGA3D_DEVCAP_SURFACEFMT_LUMINANCE8 = 42,
1088	SVGA3D_DEVCAP_SURFACEFMT_Z_D16 = 43,
1089	SVGA3D_DEVCAP_SURFACEFMT_Z_D24S8 = 44,
1090	SVGA3D_DEVCAP_SURFACEFMT_Z_D24X8 = 45,
1091	SVGA3D_DEVCAP_SURFACEFMT_DXT1 = 46,
1092	SVGA3D_DEVCAP_SURFACEFMT_DXT2 = 47,
1093	SVGA3D_DEVCAP_SURFACEFMT_DXT3 = 48,
1094	SVGA3D_DEVCAP_SURFACEFMT_DXT4 = 49,
1095	SVGA3D_DEVCAP_SURFACEFMT_DXT5 = 50,
1096	SVGA3D_DEVCAP_SURFACEFMT_BUMPX8L8V8U8 = 51,
1097	SVGA3D_DEVCAP_SURFACEFMT_A2W10V10U10 = 52,
1098	SVGA3D_DEVCAP_SURFACEFMT_BUMPU8V8 = 53,
1099	SVGA3D_DEVCAP_SURFACEFMT_Q8W8V8U8 = 54,
1100	SVGA3D_DEVCAP_SURFACEFMT_CxV8U8 = 55,
1101	SVGA3D_DEVCAP_SURFACEFMT_R_S10E5 = 56,
1102	SVGA3D_DEVCAP_SURFACEFMT_R_S23E8 = 57,
1103	SVGA3D_DEVCAP_SURFACEFMT_RG_S10E5 = 58,
1104	SVGA3D_DEVCAP_SURFACEFMT_RG_S23E8 = 59,
1105	SVGA3D_DEVCAP_SURFACEFMT_ARGB_S10E5 = 60,
1106	SVGA3D_DEVCAP_SURFACEFMT_ARGB_S23E8 = 61,
1107	SVGA3D_DEVCAP_MAX_VERTEX_SHADER_TEXTURES = 63,
1108	SVGA3D_DEVCAP_SURFACEFMT_V16U16 = 65,
1109	SVGA3D_DEVCAP_SURFACEFMT_G16R16 = 66,
1110	SVGA3D_DEVCAP_SURFACEFMT_A16B16G16R16 = 67,
1111	SVGA3D_DEVCAP_SURFACEFMT_UYVY = 68,
1112	SVGA3D_DEVCAP_SURFACEFMT_YUY2 = 69,
1113	SVGA3D_DEVCAP_MULTISAMPLE_NONMASKABLESAMPLES = 70,
1114	SVGA3D_DEVCAP_MULTISAMPLE_MASKABLESAMPLES = 71,
1115	SVGA3D_DEVCAP_ALPHATOCOVERAGE = 72,
1116	SVGA3D_DEVCAP_SUPERSAMPLE = 73,
1117	SVGA3D_DEVCAP_AUTOGENMIPMAPS = 74,
1118	SVGA3D_DEVCAP_SURFACEFMT_NV12 = 75,
1119	SVGA3D_DEVCAP_SURFACEFMT_AYUV = 76,
1120	SVGA3D_DEVCAP_SURFACEFMT_Z_DF16 = 79,
1121	SVGA3D_DEVCAP_SURFACEFMT_Z_DF24 = 80,
1122	SVGA3D_DEVCAP_SURFACEFMT_Z_D24S8_INT = 81,
1123	SVGA3D_DEVCAP_SURFACEFMT_ATI1 = 82,
1124	SVGA3D_DEVCAP_SURFACEFMT_ATI2 = 83,
1125	#endif
1126
1127	LogRel(("VMSVGA3d: Capabilities:\n"));
1128	LogRel(("VMSVGA3d: maxActiveLights=%-2d maxTextures=%-2d\n",
1129	pState->caps.maxActiveLights, pState->caps.maxTextures));
1130	LogRel(("VMSVGA3d: maxClipDistances=%-2d maxColorAttachments=%-2d maxClipDistances=%d\n",
1131	pState->caps.maxClipDistances, pState->caps.maxColorAttachments, pState->caps.maxClipDistances));
1132	LogRel(("VMSVGA3d: maxColorAttachments=%-2d maxTextureAnisotropy=%-2d maxRectangleTextureSize=%d\n",
1133	pState->caps.maxColorAttachments, pState->caps.maxTextureAnisotropy, pState->caps.maxRectangleTextureSize));
1134	LogRel(("VMSVGA3d: maxVertexShaderTemps=%-2d maxVertexShaderInstructions=%d maxFragmentShaderInstructions=%d\n",
1135	pState->caps.maxVertexShaderTemps, pState->caps.maxVertexShaderInstructions, pState->caps.maxFragmentShaderInstructions));
1136	LogRel(("VMSVGA3d: maxFragmentShaderTemps=%d flPointSize={%d.%02u, %d.%02u}\n",
1137	pState->caps.maxFragmentShaderTemps,
1138	(int)pState->caps.flPointSize[0], (int)(pState->caps.flPointSize[0] * 100) % 100,
1139	(int)pState->caps.flPointSize[1], (int)(pState->caps.flPointSize[1] * 100) % 100));
1140	LogRel(("VMSVGA3d: fragmentShaderVersion=%-2d vertexShaderVersion=%-2d\n",
1141	pState->caps.fragmentShaderVersion, pState->caps.vertexShaderVersion));
1142	LogRel(("VMSVGA3d: fS3TCSupported=%-2d fTextureFilterAnisotropicSupported=%d\n",
1143	pState->caps.fS3TCSupported, pState->caps.fTextureFilterAnisotropicSupported));
1144
1145
1146	/* Initialize the shader library. */
1147	pState->ShaderIf.pfnSwitchInitProfile = vmsvga3dShaderIfSwitchInitProfile;
1148	pState->ShaderIf.pfnGetNextExtension = vmsvga3dShaderIfGetNextExtension;
1149	rc = ShaderInitLib(&pState->ShaderIf);
1150	AssertRC(rc);
1151
1152	/* Cleanup */
1153	rc = vmsvga3dBackContextDestroy(pThisCC, 1);
1154	AssertRC(rc);
1155	#ifdef VBOX_VMSVGA3D_DUAL_OPENGL_PROFILE
1156	rc = vmsvga3dBackContextDestroy(pThisCC, 2);
1157	AssertRC(rc);
1158	#endif
1159
1160	if ( pState->rsGLVersion < 3.0
1161	&& pState->rsOtherGLVersion < 3.0 /* darwin: legacy profile hack */)
1162	{
1163	LogRel(("VMSVGA3d: unsupported OpenGL version; minimum is 3.0\n"));
1164	return VERR_NOT_IMPLEMENTED;
1165	}
1166
1167	return VINF_SUCCESS;
1168	}
1169
1170	static DECLCALLBACK(int) vmsvga3dBackReset(PVGASTATECC pThisCC)
1171	{
1172	PVMSVGA3DSTATE pState = pThisCC->svga.p3dState;
1173	AssertReturn(pThisCC->svga.p3dState, VERR_NO_MEMORY);
1174
1175	/* Destroy all leftover surfaces. */
1176	for (uint32_t i = 0; i < pState->cSurfaces; i++)
1177	{
1178	if (pState->papSurfaces[i]->id != SVGA3D_INVALID_ID)
1179	vmsvga3dSurfaceDestroy(pThisCC, pState->papSurfaces[i]->id);
1180	}
1181
1182	/* Destroy all leftover contexts. */
1183	for (uint32_t i = 0; i < pState->cContexts; i++)
1184	{
1185	if (pState->papContexts[i]->id != SVGA3D_INVALID_ID)
1186	vmsvga3dBackContextDestroy(pThisCC, pState->papContexts[i]->id);
1187	}
1188
1189	if (pState->SharedCtx.id == VMSVGA3D_SHARED_CTX_ID)
1190	vmsvga3dContextDestroyOgl(pThisCC, &pState->SharedCtx, VMSVGA3D_SHARED_CTX_ID);
1191
1192	return VINF_SUCCESS;
1193	}
1194
1195	static DECLCALLBACK(int) vmsvga3dBackTerminate(PVGASTATECC pThisCC)
1196	{
1197	PVMSVGA3DSTATE pState = pThisCC->svga.p3dState;
1198	AssertReturn(pState, VERR_WRONG_ORDER);
1199	int rc;
1200
1201	rc = vmsvga3dBackReset(pThisCC);
1202	AssertRCReturn(rc, rc);
1203
1204	/* Terminate the shader library. */
1205	rc = ShaderDestroyLib();
1206	AssertRC(rc);
1207
1208	#ifdef RT_OS_WINDOWS
1209	/* Terminate the window creation thread. */
1210	rc = vmsvga3dSendThreadMessage(pState->pWindowThread, pState->WndRequestSem, WM_VMSVGA3D_EXIT, 0, 0);
1211	AssertRCReturn(rc, rc);
1212
1213	RTSemEventDestroy(pState->WndRequestSem);
1214	#elif defined(RT_OS_DARWIN)
1215
1216	#elif defined(RT_OS_LINUX)
1217	/* signal to the thread that it is supposed to exit */
1218	pState->bTerminate = true;
1219	/* wait for it to terminate */
1220	rc = RTThreadWait(pState->pWindowThread, 10000, NULL);
1221	AssertRC(rc);
1222	XCloseDisplay(pState->display);
1223	#endif
1224
1225	RTStrFree(pState->pszExtensions);
1226	pState->pszExtensions = NULL;
1227	#ifdef VBOX_VMSVGA3D_DUAL_OPENGL_PROFILE
1228	RTStrFree(pState->pszOtherExtensions);
1229	#endif
1230	pState->pszOtherExtensions = NULL;
1231
1232	/* Free all leftover surface states. */
1233	for (uint32_t i = 0; i < pState->cSurfaces; i++)
1234	{
1235	AssertPtr(pState->papSurfaces[i]);
1236	RTMemFree(pState->papSurfaces[i]);
1237	pState->papSurfaces[i] = NULL;
1238	}
1239
1240	/* Destroy all leftover contexts. */
1241	for (uint32_t i = 0; i < pState->cContexts; i++)
1242	{
1243	AssertPtr(pState->papContexts[i]);
1244	RTMemFree(pState->papContexts[i]);
1245	pState->papContexts[i] = NULL;
1246	}
1247
1248	if (pState->papSurfaces)
1249	{
1250	RTMemFree(pState->papSurfaces);
1251	pState->papSurfaces = NULL;
1252	}
1253
1254	if (pState->papContexts)
1255	{
1256	RTMemFree(pState->papContexts);
1257	pState->papContexts = NULL;
1258	}
1259
1260	pThisCC->svga.p3dState = NULL;
1261	RTMemFree(pState);
1262	return VINF_SUCCESS;
1263	}
1264
1265
1266	static DECLCALLBACK(void) vmsvga3dBackUpdateHostScreenViewport(PVGASTATECC pThisCC, uint32_t idScreen, VMSVGAVIEWPORT const *pOldViewport)
1267	{
1268	/** @todo Move the visible framebuffer content here, don't wait for the guest to
1269	* redraw it. */
1270
1271	#ifdef RT_OS_DARWIN
1272	RT_NOREF(pOldViewport);
1273	PVMSVGA3DSTATE pState = pThisCC->svga.p3dState;
1274	if ( pState
1275	&& idScreen == 0
1276	&& pState->SharedCtx.id == VMSVGA3D_SHARED_CTX_ID)
1277	{
1278	vmsvga3dCocoaViewUpdateViewport(pState->SharedCtx.cocoaView);
1279	}
1280	#else
1281	RT_NOREF(pThisCC, idScreen, pOldViewport);
1282	#endif
1283	}
1284
1285
1286	/**
1287	* Worker for vmsvga3dBackQueryCaps that figures out supported operations for a
1288	* given surface format capability.
1289	*
1290	* @returns Supported/indented operations (SVGA3DFORMAT_OP_XXX).
1291	* @param idx3dCaps The SVGA3D_CAPS_XXX value of the surface format.
1292	*
1293	* @remarks See fromat_cap_table in svga_format.c (mesa/gallium) for a reference
1294	* of implicit guest expectations:
1295	* http://cgit.freedesktop.org/mesa/mesa/tree/src/gallium/drivers/svga/svga_format.c
1296	*/
1297	static uint32_t vmsvga3dGetSurfaceFormatSupport(uint32_t idx3dCaps)
1298	{
1299	uint32_t result = 0;
1300
1301	/** @todo missing:
1302	*
1303	* SVGA3DFORMAT_OP_PIXELSIZE
1304	*/
1305
1306	switch (idx3dCaps)
1307	{
1308	case SVGA3D_DEVCAP_SURFACEFMT_X8R8G8B8:
1309	case SVGA3D_DEVCAP_SURFACEFMT_X1R5G5B5:
1310	case SVGA3D_DEVCAP_SURFACEFMT_R5G6B5:
1311	result \|= SVGA3DFORMAT_OP_MEMBEROFGROUP_ARGB
1312	\| SVGA3DFORMAT_OP_CONVERT_TO_ARGB
1313	\| SVGA3DFORMAT_OP_DISPLAYMODE /* Should not be set for alpha formats. */
1314	\| SVGA3DFORMAT_OP_3DACCELERATION; /* implies OP_DISPLAYMODE */
1315	break;
1316
1317	case SVGA3D_DEVCAP_SURFACEFMT_A8R8G8B8:
1318	case SVGA3D_DEVCAP_SURFACEFMT_A2R10G10B10:
1319	case SVGA3D_DEVCAP_SURFACEFMT_A1R5G5B5:
1320	case SVGA3D_DEVCAP_SURFACEFMT_A4R4G4B4:
1321	result \|= SVGA3DFORMAT_OP_MEMBEROFGROUP_ARGB
1322	\| SVGA3DFORMAT_OP_CONVERT_TO_ARGB
1323	\| SVGA3DFORMAT_OP_SAME_FORMAT_UP_TO_ALPHA_RENDERTARGET;
1324	break;
1325	}
1326
1327	/** @todo check hardware caps! */
1328	switch (idx3dCaps)
1329	{
1330	case SVGA3D_DEVCAP_SURFACEFMT_X8R8G8B8:
1331	case SVGA3D_DEVCAP_SURFACEFMT_A8R8G8B8:
1332	case SVGA3D_DEVCAP_SURFACEFMT_A2R10G10B10:
1333	case SVGA3D_DEVCAP_SURFACEFMT_X1R5G5B5:
1334	case SVGA3D_DEVCAP_SURFACEFMT_A1R5G5B5:
1335	case SVGA3D_DEVCAP_SURFACEFMT_A4R4G4B4:
1336	case SVGA3D_DEVCAP_SURFACEFMT_R5G6B5:
1337	case SVGA3D_DEVCAP_SURFACEFMT_LUMINANCE16:
1338	case SVGA3D_DEVCAP_SURFACEFMT_LUMINANCE8_ALPHA8:
1339	case SVGA3D_DEVCAP_SURFACEFMT_ALPHA8:
1340	case SVGA3D_DEVCAP_SURFACEFMT_LUMINANCE8:
1341	result \|= SVGA3DFORMAT_OP_TEXTURE
1342	\| SVGA3DFORMAT_OP_OFFSCREEN_RENDERTARGET
1343	\| SVGA3DFORMAT_OP_OFFSCREENPLAIN
1344	\| SVGA3DFORMAT_OP_SAME_FORMAT_RENDERTARGET
1345	\| SVGA3DFORMAT_OP_VOLUMETEXTURE
1346	\| SVGA3DFORMAT_OP_CUBETEXTURE
1347	\| SVGA3DFORMAT_OP_SRGBREAD
1348	\| SVGA3DFORMAT_OP_SRGBWRITE;
1349	break;
1350
1351	case SVGA3D_DEVCAP_SURFACEFMT_Z_D16:
1352	case SVGA3D_DEVCAP_SURFACEFMT_Z_D24S8:
1353	case SVGA3D_DEVCAP_SURFACEFMT_Z_D24X8:
1354	case SVGA3D_DEVCAP_SURFACEFMT_Z_DF16:
1355	case SVGA3D_DEVCAP_SURFACEFMT_Z_DF24:
1356	case SVGA3D_DEVCAP_SURFACEFMT_Z_D24S8_INT:
1357	result \|= SVGA3DFORMAT_OP_ZSTENCIL
1358	\| SVGA3DFORMAT_OP_ZSTENCIL_WITH_ARBITRARY_COLOR_DEPTH
1359	\| SVGA3DFORMAT_OP_TEXTURE /* Necessary for Ubuntu Unity */;
1360	break;
1361
1362	case SVGA3D_DEVCAP_SURFACEFMT_DXT1:
1363	case SVGA3D_DEVCAP_SURFACEFMT_DXT2:
1364	case SVGA3D_DEVCAP_SURFACEFMT_DXT3:
1365	case SVGA3D_DEVCAP_SURFACEFMT_DXT4:
1366	case SVGA3D_DEVCAP_SURFACEFMT_DXT5:
1367	result \|= SVGA3DFORMAT_OP_TEXTURE
1368	\| SVGA3DFORMAT_OP_VOLUMETEXTURE
1369	\| SVGA3DFORMAT_OP_CUBETEXTURE
1370	\| SVGA3DFORMAT_OP_SRGBREAD;
1371	break;
1372
1373	case SVGA3D_DEVCAP_SURFACEFMT_BUMPX8L8V8U8:
1374	case SVGA3D_DEVCAP_SURFACEFMT_A2W10V10U10:
1375	case SVGA3D_DEVCAP_SURFACEFMT_BUMPU8V8:
1376	case SVGA3D_DEVCAP_SURFACEFMT_Q8W8V8U8:
1377	case SVGA3D_DEVCAP_SURFACEFMT_CxV8U8:
1378	break;
1379
1380	case SVGA3D_DEVCAP_SURFACEFMT_R_S10E5:
1381	case SVGA3D_DEVCAP_SURFACEFMT_R_S23E8:
1382	case SVGA3D_DEVCAP_SURFACEFMT_RG_S10E5:
1383	case SVGA3D_DEVCAP_SURFACEFMT_RG_S23E8:
1384	case SVGA3D_DEVCAP_SURFACEFMT_ARGB_S10E5:
1385	case SVGA3D_DEVCAP_SURFACEFMT_ARGB_S23E8:
1386	result \|= SVGA3DFORMAT_OP_TEXTURE
1387	\| SVGA3DFORMAT_OP_VOLUMETEXTURE
1388	\| SVGA3DFORMAT_OP_CUBETEXTURE
1389	\| SVGA3DFORMAT_OP_OFFSCREEN_RENDERTARGET;
1390	break;
1391
1392	case SVGA3D_DEVCAP_SURFACEFMT_V16U16:
1393	case SVGA3D_DEVCAP_SURFACEFMT_G16R16:
1394	case SVGA3D_DEVCAP_SURFACEFMT_A16B16G16R16:
1395	result \|= SVGA3DFORMAT_OP_TEXTURE
1396	\| SVGA3DFORMAT_OP_VOLUMETEXTURE
1397	\| SVGA3DFORMAT_OP_CUBETEXTURE
1398	\| SVGA3DFORMAT_OP_OFFSCREEN_RENDERTARGET;
1399	break;
1400
1401	case SVGA3D_DEVCAP_SURFACEFMT_UYVY:
1402	case SVGA3D_DEVCAP_SURFACEFMT_YUY2:
1403	result \|= SVGA3DFORMAT_OP_OFFSCREENPLAIN
1404	\| SVGA3DFORMAT_OP_CONVERT_TO_ARGB
1405	\| SVGA3DFORMAT_OP_TEXTURE;
1406	break;
1407
1408	case SVGA3D_DEVCAP_SURFACEFMT_NV12:
1409	case SVGA3D_DEVCAP_DEAD10: /* SVGA3D_DEVCAP_SURFACEFMT_AYUV */
1410	break;
1411	}
1412	Log(("CAPS: %s =\n%s\n", vmsvga3dGetCapString(idx3dCaps), vmsvga3dGet3dFormatString(result)));
1413
1414	return result;
1415	}
1416
1417	#if 0 /* unused */
1418	static uint32_t vmsvga3dGetDepthFormatSupport(PVMSVGA3DSTATE pState3D, uint32_t idx3dCaps)
1419	{
1420	RT_NOREF(pState3D, idx3dCaps);
1421
1422	/** @todo test this somehow */
1423	uint32_t result = SVGA3DFORMAT_OP_ZSTENCIL \| SVGA3DFORMAT_OP_ZSTENCIL_WITH_ARBITRARY_COLOR_DEPTH;
1424
1425	Log(("CAPS: %s =\n%s\n", vmsvga3dGetCapString(idx3dCaps), vmsvga3dGet3dFormatString(result)));
1426	return result;
1427	}
1428	#endif
1429
1430
1431	static DECLCALLBACK(int) vmsvga3dBackQueryCaps(PVGASTATECC pThisCC, SVGA3dDevCapIndex idx3dCaps, uint32_t *pu32Val)
1432	{
1433	PVMSVGA3DSTATE pState = pThisCC->svga.p3dState;
1434	AssertReturn(pState, VERR_NO_MEMORY);
1435	int rc = VINF_SUCCESS;
1436
1437	*pu32Val = 0;
1438
1439	/*
1440	* The capabilities access by current (2015-03-01) linux sources (gallium,
1441	* vmwgfx, xorg-video-vmware) are annotated, caps without xref annotations
1442	* aren't access.
1443	*/
1444
1445	switch (idx3dCaps)
1446	{
1447	/* Linux: vmwgfx_fifo.c in kmod; only used with SVGA_CAP_GBOBJECTS. */
1448	case SVGA3D_DEVCAP_3D:
1449	pu32Val = 1; / boolean? */
1450	break;
1451
1452	case SVGA3D_DEVCAP_MAX_LIGHTS:
1453	*pu32Val = pState->caps.maxActiveLights;
1454	break;
1455
1456	case SVGA3D_DEVCAP_MAX_TEXTURES:
1457	*pu32Val = pState->caps.maxTextures;
1458	break;
1459
1460	case SVGA3D_DEVCAP_MAX_CLIP_PLANES:
1461	*pu32Val = pState->caps.maxClipDistances;
1462	break;
1463
1464	/* Linux: svga_screen.c in gallium; 3.0 or later required. */
1465	case SVGA3D_DEVCAP_VERTEX_SHADER_VERSION:
1466	*pu32Val = pState->caps.vertexShaderVersion;
1467	break;
1468
1469	case SVGA3D_DEVCAP_VERTEX_SHADER:
1470	/* boolean? */
1471	*pu32Val = (pState->caps.vertexShaderVersion != SVGA3DVSVERSION_NONE);
1472	break;
1473
1474	/* Linux: svga_screen.c in gallium; 3.0 or later required. */
1475	case SVGA3D_DEVCAP_FRAGMENT_SHADER_VERSION:
1476	*pu32Val = pState->caps.fragmentShaderVersion;
1477	break;
1478
1479	case SVGA3D_DEVCAP_FRAGMENT_SHADER:
1480	/* boolean? */
1481	*pu32Val = (pState->caps.fragmentShaderVersion != SVGA3DPSVERSION_NONE);
1482	break;
1483
1484	case SVGA3D_DEVCAP_S23E8_TEXTURES:
1485	case SVGA3D_DEVCAP_S10E5_TEXTURES:
1486	/* Must be obsolete by now; surface format caps specify the same thing. */
1487	rc = VERR_INVALID_PARAMETER;
1488	break;
1489
1490	case SVGA3D_DEVCAP_MAX_FIXED_VERTEXBLEND:
1491	break;
1492
1493	/*
1494	* 2. The BUFFER_FORMAT capabilities are deprecated, and they always
1495	* return TRUE. Even on physical hardware that does not support
1496	* these formats natively, the SVGA3D device will provide an emulation
1497	* which should be invisible to the guest OS.
1498	*/
1499	case SVGA3D_DEVCAP_D16_BUFFER_FORMAT:
1500	case SVGA3D_DEVCAP_D24S8_BUFFER_FORMAT:
1501	case SVGA3D_DEVCAP_D24X8_BUFFER_FORMAT:
1502	*pu32Val = 1;
1503	break;
1504
1505	case SVGA3D_DEVCAP_QUERY_TYPES:
1506	break;
1507
1508	case SVGA3D_DEVCAP_TEXTURE_GRADIENT_SAMPLING:
1509	break;
1510
1511	/* Linux: svga_screen.c in gallium; capped at 80.0, default 1.0. */
1512	case SVGA3D_DEVCAP_MAX_POINT_SIZE:
1513	AssertCompile(sizeof(uint32_t) == sizeof(float));
1514	(float )pu32Val = pState->caps.flPointSize[1];
1515	break;
1516
1517	case SVGA3D_DEVCAP_MAX_SHADER_TEXTURES:
1518	/** @todo ?? */
1519	rc = VERR_INVALID_PARAMETER;
1520	break;
1521
1522	/* Linux: svga_screen.c in gallium (for PIPE_CAP_MAX_TEXTURE_2D_LEVELS); have default if missing. */
1523	case SVGA3D_DEVCAP_MAX_TEXTURE_WIDTH:
1524	case SVGA3D_DEVCAP_MAX_TEXTURE_HEIGHT:
1525	*pu32Val = pState->caps.maxRectangleTextureSize;
1526	break;
1527
1528	/* Linux: svga_screen.c in gallium (for PIPE_CAP_MAX_TEXTURE_3D_LEVELS); have default if missing. */
1529	case SVGA3D_DEVCAP_MAX_VOLUME_EXTENT:
1530	//*pu32Val = pCaps->MaxVolumeExtent;
1531	*pu32Val = 256;
1532	break;
1533
1534	case SVGA3D_DEVCAP_MAX_TEXTURE_REPEAT:
1535	pu32Val = 32768; / hardcoded in Wine */
1536	break;
1537
1538	case SVGA3D_DEVCAP_MAX_TEXTURE_ASPECT_RATIO:
1539	//*pu32Val = pCaps->MaxTextureAspectRatio;
1540	break;
1541
1542	/* Linux: svga_screen.c in gallium (for PIPE_CAPF_MAX_TEXTURE_ANISOTROPY); defaults to 4.0. */
1543	case SVGA3D_DEVCAP_MAX_TEXTURE_ANISOTROPY:
1544	*pu32Val = pState->caps.maxTextureAnisotropy;
1545	break;
1546
1547	case SVGA3D_DEVCAP_MAX_PRIMITIVE_COUNT:
1548	case SVGA3D_DEVCAP_MAX_VERTEX_INDEX:
1549	pu32Val = 0xFFFFF; / hardcoded in Wine */
1550	break;
1551
1552	/* Linux: svga_screen.c in gallium (for PIPE_SHADER_VERTEX/PIPE_SHADER_CAP_MAX_INSTRUCTIONS); defaults to 512. */
1553	case SVGA3D_DEVCAP_MAX_VERTEX_SHADER_INSTRUCTIONS:
1554	*pu32Val = pState->caps.maxVertexShaderInstructions;
1555	break;
1556
1557	case SVGA3D_DEVCAP_MAX_FRAGMENT_SHADER_INSTRUCTIONS:
1558	*pu32Val = pState->caps.maxFragmentShaderInstructions;
1559	break;
1560
1561	/* Linux: svga_screen.c in gallium (for PIPE_SHADER_VERTEX/PIPE_SHADER_CAP_MAX_TEMPS); defaults to 32. */
1562	case SVGA3D_DEVCAP_MAX_VERTEX_SHADER_TEMPS:
1563	*pu32Val = pState->caps.maxVertexShaderTemps;
1564	break;
1565
1566	/* Linux: svga_screen.c in gallium (for PIPE_SHADER_FRAGMENT/PIPE_SHADER_CAP_MAX_TEMPS); defaults to 32. */
1567	case SVGA3D_DEVCAP_MAX_FRAGMENT_SHADER_TEMPS:
1568	*pu32Val = pState->caps.maxFragmentShaderTemps;
1569	break;
1570
1571	case SVGA3D_DEVCAP_TEXTURE_OPS:
1572	break;
1573
1574	case SVGA3D_DEVCAP_DEAD4: /* SVGA3D_DEVCAP_MULTISAMPLE_NONMASKABLESAMPLES */
1575	break;
1576
1577	case SVGA3D_DEVCAP_DEAD5: /* SVGA3D_DEVCAP_MULTISAMPLE_MASKABLESAMPLES */
1578	break;
1579
1580	case SVGA3D_DEVCAP_DEAD7: /* SVGA3D_DEVCAP_ALPHATOCOVERAGE */
1581	break;
1582
1583	case SVGA3D_DEVCAP_DEAD6: /* SVGA3D_DEVCAP_SUPERSAMPLE */
1584	break;
1585
1586	case SVGA3D_DEVCAP_AUTOGENMIPMAPS:
1587	//*pu32Val = !!(pCaps->Caps2 & D3DCAPS2_CANAUTOGENMIPMAP);
1588	break;
1589
1590	case SVGA3D_DEVCAP_MAX_VERTEX_SHADER_TEXTURES:
1591	break;
1592
1593	case SVGA3D_DEVCAP_MAX_RENDER_TARGETS: /** @todo same thing? */
1594	case SVGA3D_DEVCAP_MAX_SIMULTANEOUS_RENDER_TARGETS:
1595	*pu32Val = pState->caps.maxColorAttachments;
1596	break;
1597
1598	/*
1599	* This is the maximum number of SVGA context IDs that the guest
1600	* can define using SVGA_3D_CMD_CONTEXT_DEFINE.
1601	*/
1602	case SVGA3D_DEVCAP_MAX_CONTEXT_IDS:
1603	*pu32Val = SVGA3D_MAX_CONTEXT_IDS;
1604	break;
1605
1606	/*
1607	* This is the maximum number of SVGA surface IDs that the guest
1608	* can define using SVGA_3D_CMD_SURFACE_DEFINE*.
1609	*/
1610	case SVGA3D_DEVCAP_MAX_SURFACE_IDS:
1611	*pu32Val = SVGA3D_MAX_SURFACE_IDS;
1612	break;
1613
1614	#if 0 /* Appeared more recently, not yet implemented. */
1615	/* Linux: svga_screen.c in gallium; defaults to FALSE. */
1616	case SVGA3D_DEVCAP_LINE_AA:
1617	break;
1618	/* Linux: svga_screen.c in gallium; defaults to FALSE. */
1619	case SVGA3D_DEVCAP_LINE_STIPPLE:
1620	break;
1621	/* Linux: svga_screen.c in gallium; defaults to 1.0. */
1622	case SVGA3D_DEVCAP_MAX_LINE_WIDTH:
1623	break;
1624	/* Linux: svga_screen.c in gallium; defaults to 1.0. */
1625	case SVGA3D_DEVCAP_MAX_AA_LINE_WIDTH:
1626	break;
1627	#endif
1628
1629	/*
1630	* Supported surface formats.
1631	* Linux: svga_format.c in gallium, format_cap_table defines implicit expectations.
1632	*/
1633	case SVGA3D_DEVCAP_SURFACEFMT_X8R8G8B8:
1634	case SVGA3D_DEVCAP_SURFACEFMT_A8R8G8B8:
1635	case SVGA3D_DEVCAP_SURFACEFMT_A2R10G10B10:
1636	case SVGA3D_DEVCAP_SURFACEFMT_X1R5G5B5:
1637	case SVGA3D_DEVCAP_SURFACEFMT_A1R5G5B5:
1638	case SVGA3D_DEVCAP_SURFACEFMT_A4R4G4B4:
1639	case SVGA3D_DEVCAP_SURFACEFMT_R5G6B5:
1640	case SVGA3D_DEVCAP_SURFACEFMT_LUMINANCE16:
1641	case SVGA3D_DEVCAP_SURFACEFMT_LUMINANCE8_ALPHA8:
1642	case SVGA3D_DEVCAP_SURFACEFMT_ALPHA8:
1643	case SVGA3D_DEVCAP_SURFACEFMT_LUMINANCE8:
1644	case SVGA3D_DEVCAP_SURFACEFMT_Z_D16:
1645	case SVGA3D_DEVCAP_SURFACEFMT_Z_D24S8:
1646	case SVGA3D_DEVCAP_SURFACEFMT_Z_D24X8:
1647	case SVGA3D_DEVCAP_SURFACEFMT_Z_DF16:
1648	case SVGA3D_DEVCAP_SURFACEFMT_Z_DF24:
1649	case SVGA3D_DEVCAP_SURFACEFMT_Z_D24S8_INT:
1650	case SVGA3D_DEVCAP_SURFACEFMT_DXT1:
1651	*pu32Val = vmsvga3dGetSurfaceFormatSupport(idx3dCaps);
1652	break;
1653
1654	case SVGA3D_DEVCAP_SURFACEFMT_DXT2:
1655	case SVGA3D_DEVCAP_SURFACEFMT_DXT3:
1656	case SVGA3D_DEVCAP_SURFACEFMT_DXT4:
1657	case SVGA3D_DEVCAP_SURFACEFMT_DXT5:
1658	case SVGA3D_DEVCAP_SURFACEFMT_BUMPX8L8V8U8:
1659	case SVGA3D_DEVCAP_SURFACEFMT_A2W10V10U10:
1660	case SVGA3D_DEVCAP_SURFACEFMT_BUMPU8V8:
1661	case SVGA3D_DEVCAP_SURFACEFMT_Q8W8V8U8:
1662	case SVGA3D_DEVCAP_SURFACEFMT_CxV8U8:
1663	case SVGA3D_DEVCAP_SURFACEFMT_R_S10E5:
1664	case SVGA3D_DEVCAP_SURFACEFMT_R_S23E8:
1665	case SVGA3D_DEVCAP_SURFACEFMT_RG_S10E5:
1666	case SVGA3D_DEVCAP_SURFACEFMT_RG_S23E8:
1667	case SVGA3D_DEVCAP_SURFACEFMT_ARGB_S10E5:
1668	case SVGA3D_DEVCAP_SURFACEFMT_ARGB_S23E8:
1669	case SVGA3D_DEVCAP_SURFACEFMT_V16U16:
1670	case SVGA3D_DEVCAP_SURFACEFMT_G16R16:
1671	case SVGA3D_DEVCAP_SURFACEFMT_A16B16G16R16:
1672	case SVGA3D_DEVCAP_SURFACEFMT_UYVY:
1673	case SVGA3D_DEVCAP_SURFACEFMT_YUY2:
1674	case SVGA3D_DEVCAP_SURFACEFMT_NV12:
1675	case SVGA3D_DEVCAP_DEAD10: /* SVGA3D_DEVCAP_SURFACEFMT_AYUV */
1676	*pu32Val = vmsvga3dGetSurfaceFormatSupport(idx3dCaps);
1677	break;
1678
1679	/* Linux: Not referenced in current sources. */
1680	case SVGA3D_DEVCAP_SURFACEFMT_ATI1:
1681	case SVGA3D_DEVCAP_SURFACEFMT_ATI2:
1682	Log(("CAPS: Unknown CAP %s\n", vmsvga3dGetCapString(idx3dCaps)));
1683	rc = VERR_INVALID_PARAMETER;
1684	*pu32Val = 0;
1685	break;
1686
1687	default:
1688	Log(("CAPS: Unexpected CAP %d\n", idx3dCaps));
1689	rc = VERR_INVALID_PARAMETER;
1690	break;
1691	}
1692
1693	Log(("CAPS: %s - %x\n", vmsvga3dGetCapString(idx3dCaps), *pu32Val));
1694	return rc;
1695	}
1696
1697	/**
1698	* Convert SVGA format value to its OpenGL equivalent
1699	*
1700	* @remarks Clues to be had in format_texture_info table (wined3d/utils.c) with
1701	* help from wined3dformat_from_d3dformat().
1702	*/
1703	void vmsvga3dSurfaceFormat2OGL(PVMSVGA3DSURFACE pSurface, SVGA3dSurfaceFormat format)
1704	{
1705	#if 0
1706	#define AssertTestFmt(f) AssertMsgFailed(("Test me - " #f "\n"))
1707	#else
1708	#define AssertTestFmt(f) do {} while(0)
1709	#endif
1710	/* Init cbBlockGL for non-emulated formats. */
1711	pSurface->cbBlockGL = pSurface->cbBlock;
1712
1713	switch (format)
1714	{
1715	case SVGA3D_X8R8G8B8: /* D3DFMT_X8R8G8B8 - WINED3DFMT_B8G8R8X8_UNORM */
1716	pSurface->internalFormatGL = GL_RGB8;
1717	pSurface->formatGL = GL_BGRA;
1718	pSurface->typeGL = GL_UNSIGNED_INT_8_8_8_8_REV;
1719	break;
1720	case SVGA3D_A8R8G8B8: /* D3DFMT_A8R8G8B8 - WINED3DFMT_B8G8R8A8_UNORM */
1721	pSurface->internalFormatGL = GL_RGBA8;
1722	pSurface->formatGL = GL_BGRA;
1723	pSurface->typeGL = GL_UNSIGNED_INT_8_8_8_8_REV;
1724	break;
1725	case SVGA3D_R5G6B5: /* D3DFMT_R5G6B5 - WINED3DFMT_B5G6R5_UNORM */
1726	pSurface->internalFormatGL = GL_RGB5;
1727	pSurface->formatGL = GL_RGB;
1728	pSurface->typeGL = GL_UNSIGNED_SHORT_5_6_5;
1729	AssertTestFmt(SVGA3D_R5G6B5);
1730	break;
1731	case SVGA3D_X1R5G5B5: /* D3DFMT_X1R5G5B5 - WINED3DFMT_B5G5R5X1_UNORM */
1732	pSurface->internalFormatGL = GL_RGB5;
1733	pSurface->formatGL = GL_BGRA;
1734	pSurface->typeGL = GL_UNSIGNED_SHORT_1_5_5_5_REV;
1735	AssertTestFmt(SVGA3D_X1R5G5B5);
1736	break;
1737	case SVGA3D_A1R5G5B5: /* D3DFMT_A1R5G5B5 - WINED3DFMT_B5G5R5A1_UNORM */
1738	pSurface->internalFormatGL = GL_RGB5_A1;
1739	pSurface->formatGL = GL_BGRA;
1740	pSurface->typeGL = GL_UNSIGNED_SHORT_1_5_5_5_REV;
1741	AssertTestFmt(SVGA3D_A1R5G5B5);
1742	break;
1743	case SVGA3D_A4R4G4B4: /* D3DFMT_A4R4G4B4 - WINED3DFMT_B4G4R4A4_UNORM */
1744	pSurface->internalFormatGL = GL_RGBA4;
1745	pSurface->formatGL = GL_BGRA;
1746	pSurface->typeGL = GL_UNSIGNED_SHORT_4_4_4_4_REV;
1747	AssertTestFmt(SVGA3D_A4R4G4B4);
1748	break;
1749
1750	case SVGA3D_R8G8B8A8_UNORM:
1751	pSurface->internalFormatGL = GL_RGBA8;
1752	pSurface->formatGL = GL_RGBA;
1753	pSurface->typeGL = GL_UNSIGNED_INT_8_8_8_8_REV;
1754	break;
1755
1756	case SVGA3D_Z_D32: /* D3DFMT_D32 - WINED3DFMT_D32_UNORM */
1757	pSurface->internalFormatGL = GL_DEPTH_COMPONENT32;
1758	pSurface->formatGL = GL_DEPTH_COMPONENT;
1759	pSurface->typeGL = GL_UNSIGNED_INT;
1760	break;
1761	case SVGA3D_Z_D16: /* D3DFMT_D16 - WINED3DFMT_D16_UNORM */
1762	pSurface->internalFormatGL = GL_DEPTH_COMPONENT16; /** @todo Wine suggests GL_DEPTH_COMPONENT24. */
1763	pSurface->formatGL = GL_DEPTH_COMPONENT;
1764	pSurface->typeGL = GL_UNSIGNED_SHORT;
1765	AssertTestFmt(SVGA3D_Z_D16);
1766	break;
1767	case SVGA3D_Z_D24S8: /* D3DFMT_D24S8 - WINED3DFMT_D24_UNORM_S8_UINT */
1768	pSurface->internalFormatGL = GL_DEPTH24_STENCIL8;
1769	pSurface->formatGL = GL_DEPTH_STENCIL;
1770	pSurface->typeGL = GL_UNSIGNED_INT_24_8;
1771	break;
1772	case SVGA3D_Z_D15S1: /* D3DFMT_D15S1 - WINED3DFMT_S1_UINT_D15_UNORM */
1773	pSurface->internalFormatGL = GL_DEPTH_COMPONENT16; /** @todo ??? */
1774	pSurface->formatGL = GL_DEPTH_STENCIL;
1775	pSurface->typeGL = GL_UNSIGNED_SHORT;
1776	/** @todo Wine sources hints at no hw support for this, so test this one! */
1777	AssertTestFmt(SVGA3D_Z_D15S1);
1778	break;
1779	case SVGA3D_Z_D24X8: /* D3DFMT_D24X8 - WINED3DFMT_X8D24_UNORM */
1780	pSurface->internalFormatGL = GL_DEPTH_COMPONENT24;
1781	pSurface->formatGL = GL_DEPTH_COMPONENT;
1782	pSurface->typeGL = GL_UNSIGNED_INT;
1783	AssertTestFmt(SVGA3D_Z_D24X8);
1784	break;
1785
1786	/* Advanced D3D9 depth formats. */
1787	case SVGA3D_Z_DF16: /* D3DFMT_DF16? - not supported */
1788	pSurface->internalFormatGL = GL_DEPTH_COMPONENT16;
1789	pSurface->formatGL = GL_DEPTH_COMPONENT;
1790	pSurface->typeGL = GL_HALF_FLOAT;
1791	break;
1792
1793	case SVGA3D_Z_DF24: /* D3DFMT_DF24? - not supported */
1794	pSurface->internalFormatGL = GL_DEPTH_COMPONENT24;
1795	pSurface->formatGL = GL_DEPTH_COMPONENT;
1796	pSurface->typeGL = GL_FLOAT; /* ??? */
1797	break;
1798
1799	case SVGA3D_Z_D24S8_INT: /* D3DFMT_D24S8 */
1800	pSurface->internalFormatGL = GL_DEPTH24_STENCIL8;
1801	pSurface->formatGL = GL_DEPTH_STENCIL;
1802	pSurface->typeGL = GL_UNSIGNED_INT_24_8;
1803	break;
1804
1805	case SVGA3D_DXT1: /* D3DFMT_DXT1 - WINED3DFMT_DXT1 */
1806	pSurface->internalFormatGL = GL_COMPRESSED_RGBA_S3TC_DXT1_EXT;
1807	pSurface->formatGL = GL_RGBA; /* not used */
1808	pSurface->typeGL = GL_UNSIGNED_BYTE; /* not used */
1809	break;
1810
1811	case SVGA3D_DXT2: /* D3DFMT_DXT2 */
1812	/* "DXT2 and DXT3 are the same from an API perspective." */
1813	RT_FALL_THRU();
1814	case SVGA3D_DXT3: /* D3DFMT_DXT3 - WINED3DFMT_DXT3 */
1815	pSurface->internalFormatGL = GL_COMPRESSED_RGBA_S3TC_DXT3_EXT;
1816	pSurface->formatGL = GL_RGBA; /* not used */
1817	pSurface->typeGL = GL_UNSIGNED_BYTE; /* not used */
1818	break;
1819
1820	case SVGA3D_DXT4: /* D3DFMT_DXT4 */
1821	/* "DXT4 and DXT5 are the same from an API perspective." */
1822	RT_FALL_THRU();
1823	case SVGA3D_DXT5: /* D3DFMT_DXT5 - WINED3DFMT_DXT5 */
1824	pSurface->internalFormatGL = GL_COMPRESSED_RGBA_S3TC_DXT5_EXT;
1825	pSurface->formatGL = GL_RGBA; /* not used */
1826	pSurface->typeGL = GL_UNSIGNED_BYTE; /* not used */
1827	break;
1828
1829	case SVGA3D_LUMINANCE8: /* D3DFMT_? - ? */
1830	pSurface->internalFormatGL = GL_LUMINANCE8_EXT;
1831	pSurface->formatGL = GL_LUMINANCE;
1832	pSurface->typeGL = GL_UNSIGNED_BYTE;
1833	break;
1834
1835	case SVGA3D_LUMINANCE16: /* D3DFMT_? - ? */
1836	pSurface->internalFormatGL = GL_LUMINANCE16_EXT;
1837	pSurface->formatGL = GL_LUMINANCE;
1838	pSurface->typeGL = GL_UNSIGNED_SHORT;
1839	break;
1840
1841	case SVGA3D_LUMINANCE4_ALPHA4: /* D3DFMT_? - ? */
1842	pSurface->internalFormatGL = GL_LUMINANCE4_ALPHA4_EXT;
1843	pSurface->formatGL = GL_LUMINANCE_ALPHA;
1844	pSurface->typeGL = GL_UNSIGNED_BYTE;
1845	break;
1846
1847	case SVGA3D_LUMINANCE8_ALPHA8: /* D3DFMT_? - ? */
1848	pSurface->internalFormatGL = GL_LUMINANCE8_ALPHA8_EXT;
1849	pSurface->formatGL = GL_LUMINANCE_ALPHA;
1850	pSurface->typeGL = GL_UNSIGNED_BYTE; /* unsigned_short causes issues even though this type should be 16-bit */
1851	break;
1852
1853	case SVGA3D_ALPHA8: /* D3DFMT_A8? - WINED3DFMT_A8_UNORM? */
1854	pSurface->internalFormatGL = GL_ALPHA8_EXT;
1855	pSurface->formatGL = GL_ALPHA;
1856	pSurface->typeGL = GL_UNSIGNED_BYTE;
1857	break;
1858
1859	#if 0
1860
1861	/* Bump-map formats */
1862	case SVGA3D_BUMPU8V8:
1863	return D3DFMT_V8U8;
1864	case SVGA3D_BUMPL6V5U5:
1865	return D3DFMT_L6V5U5;
1866	case SVGA3D_BUMPX8L8V8U8:
1867	return D3DFMT_X8L8V8U8;
1868	case SVGA3D_FORMAT_DEAD1:
1869	/* No corresponding D3D9 equivalent. */
1870	AssertFailedReturn(D3DFMT_UNKNOWN);
1871	/* signed bump-map formats */
1872	case SVGA3D_V8U8:
1873	return D3DFMT_V8U8;
1874	case SVGA3D_Q8W8V8U8:
1875	return D3DFMT_Q8W8V8U8;
1876	case SVGA3D_CxV8U8:
1877	return D3DFMT_CxV8U8;
1878	/* mixed bump-map formats */
1879	case SVGA3D_X8L8V8U8:
1880	return D3DFMT_X8L8V8U8;
1881	case SVGA3D_A2W10V10U10:
1882	return D3DFMT_A2W10V10U10;
1883	#endif
1884
1885	case SVGA3D_ARGB_S10E5: /* 16-bit floating-point ARGB / / D3DFMT_A16B16G16R16F - WINED3DFMT_R16G16B16A16_FLOAT */
1886	pSurface->internalFormatGL = GL_RGBA16F;
1887	pSurface->formatGL = GL_RGBA;
1888	#if 0 /* bird: wine uses half float, sounds correct to me... */
1889	pSurface->typeGL = GL_FLOAT;
1890	#else
1891	pSurface->typeGL = GL_HALF_FLOAT;
1892	AssertTestFmt(SVGA3D_ARGB_S10E5);
1893	#endif
1894	break;
1895
1896	case SVGA3D_ARGB_S23E8: /* 32-bit floating-point ARGB / / D3DFMT_A32B32G32R32F - WINED3DFMT_R32G32B32A32_FLOAT */
1897	pSurface->internalFormatGL = GL_RGBA32F;
1898	pSurface->formatGL = GL_RGBA;
1899	pSurface->typeGL = GL_FLOAT; /* ?? - same as wine, so probably correct */
1900	break;
1901
1902	case SVGA3D_A2R10G10B10: /* D3DFMT_A2R10G10B10 - WINED3DFMT_B10G10R10A2_UNORM */
1903	pSurface->internalFormatGL = GL_RGB10_A2; /* ?? - same as wine, so probably correct */
1904	#if 0 /* bird: Wine uses GL_BGRA instead of GL_RGBA. */
1905	pSurface->formatGL = GL_RGBA;
1906	#else
1907	pSurface->formatGL = GL_BGRA;
1908	#endif
1909	pSurface->typeGL = GL_UNSIGNED_INT;
1910	AssertTestFmt(SVGA3D_A2R10G10B10);
1911	break;
1912
1913
1914	/* Single- and dual-component floating point formats */
1915	case SVGA3D_R_S10E5: /* D3DFMT_R16F - WINED3DFMT_R16_FLOAT */
1916	pSurface->internalFormatGL = GL_R16F;
1917	pSurface->formatGL = GL_RED;
1918	#if 0 /* bird: wine uses half float, sounds correct to me... */
1919	pSurface->typeGL = GL_FLOAT;
1920	#else
1921	pSurface->typeGL = GL_HALF_FLOAT;
1922	AssertTestFmt(SVGA3D_R_S10E5);
1923	#endif
1924	break;
1925	case SVGA3D_R_S23E8: /* D3DFMT_R32F - WINED3DFMT_R32_FLOAT */
1926	pSurface->internalFormatGL = GL_R32F;
1927	pSurface->formatGL = GL_RED;
1928	pSurface->typeGL = GL_FLOAT;
1929	break;
1930	case SVGA3D_RG_S10E5: /* D3DFMT_G16R16F - WINED3DFMT_R16G16_FLOAT */
1931	pSurface->internalFormatGL = GL_RG16F;
1932	pSurface->formatGL = GL_RG;
1933	#if 0 /* bird: wine uses half float, sounds correct to me... */
1934	pSurface->typeGL = GL_FLOAT;
1935	#else
1936	pSurface->typeGL = GL_HALF_FLOAT;
1937	AssertTestFmt(SVGA3D_RG_S10E5);
1938	#endif
1939	break;
1940	case SVGA3D_RG_S23E8: /* D3DFMT_G32R32F - WINED3DFMT_R32G32_FLOAT */
1941	pSurface->internalFormatGL = GL_RG32F;
1942	pSurface->formatGL = GL_RG;
1943	pSurface->typeGL = GL_FLOAT;
1944	break;
1945
1946	/*
1947	* Any surface can be used as a buffer object, but SVGA3D_BUFFER is
1948	* the most efficient format to use when creating new surfaces
1949	* expressly for index or vertex data.
1950	*/
1951	case SVGA3D_BUFFER:
1952	pSurface->internalFormatGL = -1;
1953	pSurface->formatGL = -1;
1954	pSurface->typeGL = -1;
1955	break;
1956
1957	#if 0
1958	return D3DFMT_UNKNOWN;
1959
1960	case SVGA3D_V16U16:
1961	return D3DFMT_V16U16;
1962	#endif
1963
1964	case SVGA3D_G16R16: /* D3DFMT_G16R16 - WINED3DFMT_R16G16_UNORM */
1965	pSurface->internalFormatGL = GL_RG16;
1966	pSurface->formatGL = GL_RG;
1967	#if 0 /* bird: Wine uses GL_UNSIGNED_SHORT here. */
1968	pSurface->typeGL = GL_UNSIGNED_INT;
1969	#else
1970	pSurface->typeGL = GL_UNSIGNED_SHORT;
1971	AssertTestFmt(SVGA3D_G16R16);
1972	#endif
1973	break;
1974
1975	case SVGA3D_A16B16G16R16: /* D3DFMT_A16B16G16R16 - WINED3DFMT_R16G16B16A16_UNORM */
1976	pSurface->internalFormatGL = GL_RGBA16;
1977	pSurface->formatGL = GL_RGBA;
1978	#if 0 /* bird: Wine uses GL_UNSIGNED_SHORT here. */
1979	pSurface->typeGL = GL_UNSIGNED_INT; /* ??? */
1980	#else
1981	pSurface->typeGL = GL_UNSIGNED_SHORT;
1982	AssertTestFmt(SVGA3D_A16B16G16R16);
1983	#endif
1984	break;
1985
1986	case SVGA3D_R8G8B8A8_SNORM:
1987	pSurface->internalFormatGL = GL_RGB8;
1988	pSurface->formatGL = GL_BGRA;
1989	pSurface->typeGL = GL_UNSIGNED_INT_8_8_8_8_REV;
1990	AssertTestFmt(SVGA3D_R8G8B8A8_SNORM);
1991	break;
1992	case SVGA3D_R16G16_UNORM:
1993	pSurface->internalFormatGL = GL_RG16;
1994	pSurface->formatGL = GL_RG;
1995	pSurface->typeGL = GL_UNSIGNED_SHORT;
1996	AssertTestFmt(SVGA3D_R16G16_UNORM);
1997	break;
1998
1999	/* Packed Video formats */
2000	case SVGA3D_UYVY:
2001	case SVGA3D_YUY2:
2002	/* Use a BRGA texture to hold the data and convert it to an actual BGRA. */
2003	pSurface->fEmulated = true;
2004	pSurface->internalFormatGL = GL_RGBA8;
2005	pSurface->formatGL = GL_BGRA;
2006	pSurface->typeGL = GL_UNSIGNED_INT_8_8_8_8_REV;
2007	pSurface->cbBlockGL = 4 * pSurface->cxBlock * pSurface->cyBlock;
2008	break;
2009
2010	#if 0
2011	/* Planar video formats */
2012	case SVGA3D_NV12:
2013	return (D3DFORMAT)MAKEFOURCC('N', 'V', '1', '2');
2014
2015	/* Video format with alpha */
2016	case SVGA3D_FORMAT_DEAD2: /* Old SVGA3D_AYUV */
2017
2018	case SVGA3D_ATI1:
2019	case SVGA3D_ATI2:
2020	/* Unknown; only in DX10 & 11 */
2021	break;
2022	#endif
2023	default:
2024	AssertMsgFailed(("Unsupported format %d\n", format));
2025	break;
2026	}
2027	#undef AssertTestFmt
2028	}
2029
2030
2031	#if 0
2032	/**
2033	* Convert SVGA multi sample count value to its D3D equivalent
2034	*/
2035	D3DMULTISAMPLE_TYPE vmsvga3dMultipeSampleCount2D3D(uint32_t multisampleCount)
2036	{
2037	AssertCompile(D3DMULTISAMPLE_2_SAMPLES == 2);
2038	AssertCompile(D3DMULTISAMPLE_16_SAMPLES == 16);
2039
2040	if (multisampleCount > 16)
2041	return D3DMULTISAMPLE_NONE;
2042
2043	/** @todo exact same mapping as d3d? */
2044	return (D3DMULTISAMPLE_TYPE)multisampleCount;
2045	}
2046	#endif
2047
2048	/**
2049	* Destroy backend specific surface bits (part of SVGA_3D_CMD_SURFACE_DESTROY).
2050	*
2051	* @param pThisCC The device state.
2052	* @param pSurface The surface being destroyed.
2053	*/
2054	static DECLCALLBACK(void) vmsvga3dBackSurfaceDestroy(PVGASTATECC pThisCC, bool fClearCOTableEntry, PVMSVGA3DSURFACE pSurface)
2055	{
2056	RT_NOREF(fClearCOTableEntry);
2057
2058	PVMSVGA3DSTATE pState = pThisCC->svga.p3dState;
2059	AssertReturnVoid(pState);
2060
2061	PVMSVGA3DCONTEXT pContext = &pState->SharedCtx;
2062	VMSVGA3D_SET_CURRENT_CONTEXT(pState, pContext);
2063
2064	switch (pSurface->enmOGLResType)
2065	{
2066	case VMSVGA3D_OGLRESTYPE_BUFFER:
2067	Assert(pSurface->oglId.buffer != OPENGL_INVALID_ID);
2068	pState->ext.glDeleteBuffers(1, &pSurface->oglId.buffer);
2069	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
2070	break;
2071
2072	case VMSVGA3D_OGLRESTYPE_TEXTURE:
2073	Assert(pSurface->oglId.texture != OPENGL_INVALID_ID);
2074	glDeleteTextures(1, &pSurface->oglId.texture);
2075	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
2076	if (pSurface->fEmulated)
2077	{
2078	if (pSurface->idEmulated)
2079	{
2080	glDeleteTextures(1, &pSurface->idEmulated);
2081	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
2082	}
2083	}
2084	else
2085	{
2086	Assert(!pSurface->idEmulated);
2087	}
2088	break;
2089
2090	case VMSVGA3D_OGLRESTYPE_RENDERBUFFER:
2091	Assert(pSurface->oglId.renderbuffer != OPENGL_INVALID_ID);
2092	pState->ext.glDeleteRenderbuffers(1, &pSurface->oglId.renderbuffer);
2093	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
2094	break;
2095
2096	default:
2097	AssertMsg(!VMSVGA3DSURFACE_HAS_HW_SURFACE(pSurface),
2098	("hint=%#x, type=%d\n",
2099	(pSurface->f.s.surface1Flags & VMSVGA3D_SURFACE_HINT_SWITCH_MASK), pSurface->enmOGLResType));
2100	break;
2101	}
2102	}
2103
2104
2105	static DECLCALLBACK(void) vmsvga3dBackSurfaceInvalidateImage(PVGASTATECC pThisCC, PVMSVGA3DSURFACE pSurface, uint32_t uFace, uint32_t uMipmap)
2106	{
2107	RT_NOREF(pThisCC, pSurface, uFace, uMipmap);
2108	}
2109
2110
2111	static DECLCALLBACK(int) vmsvga3dBackSurfaceCopy(PVGASTATECC pThisCC, SVGA3dSurfaceImageId dest, SVGA3dSurfaceImageId src,
2112	uint32_t cCopyBoxes, SVGA3dCopyBox *pBox)
2113	{
2114	int rc;
2115
2116	LogFunc(("Copy %d boxes from sid=%u face=%u mipmap=%u to sid=%u face=%u mipmap=%u\n",
2117	cCopyBoxes, src.sid, src.face, src.mipmap, dest.sid, dest.face, dest.mipmap));
2118
2119	PVMSVGA3DSTATE pState = pThisCC->svga.p3dState;
2120	AssertReturn(pState, VERR_INVALID_STATE);
2121
2122	PVMSVGA3DSURFACE pSurfaceSrc;
2123	rc = vmsvga3dSurfaceFromSid(pState, src.sid, &pSurfaceSrc);
2124	AssertRCReturn(rc, rc);
2125
2126	PVMSVGA3DSURFACE pSurfaceDst;
2127	rc = vmsvga3dSurfaceFromSid(pState, dest.sid, &pSurfaceDst);
2128	AssertRCReturn(rc, rc);
2129
2130	if (!VMSVGA3DSURFACE_HAS_HW_SURFACE(pSurfaceSrc))
2131	{
2132	/* The source surface is still in memory. */
2133	PVMSVGA3DMIPMAPLEVEL pMipmapLevelSrc;
2134	rc = vmsvga3dMipmapLevel(pSurfaceSrc, src.face, src.mipmap, &pMipmapLevelSrc);
2135	AssertRCReturn(rc, rc);
2136
2137	PVMSVGA3DMIPMAPLEVEL pMipmapLevelDst;
2138	rc = vmsvga3dMipmapLevel(pSurfaceDst, dest.face, dest.mipmap, &pMipmapLevelDst);
2139	AssertRCReturn(rc, rc);
2140
2141	/* The copy operation is performed on the shared context. */
2142	PVMSVGA3DCONTEXT pContext = &pState->SharedCtx;
2143	VMSVGA3D_SET_CURRENT_CONTEXT(pState, pContext);
2144
2145	/* Use glTexSubImage to upload the data to the destination texture.
2146	* The latter must be an OpenGL texture.
2147	*/
2148	if (!VMSVGA3DSURFACE_HAS_HW_SURFACE(pSurfaceDst))
2149	{
2150	LogFunc(("dest sid=%u type=0x%x format=%d -> create texture\n", dest.sid, pSurfaceDst->f.s.surface1Flags, pSurfaceDst->format));
2151	rc = vmsvga3dBackCreateTexture(pThisCC, pContext, pContext->id, pSurfaceDst);
2152	AssertRCReturn(rc, rc);
2153	}
2154
2155	GLenum target;
2156	if (pSurfaceDst->targetGL == GL_TEXTURE_CUBE_MAP)
2157	target = vmsvga3dCubemapFaceFromIndex(dest.face);
2158	else
2159	{
2160	AssertMsg(pSurfaceDst->targetGL == GL_TEXTURE_2D, ("Test %#x\n", pSurfaceDst->targetGL));
2161	target = pSurfaceDst->targetGL;
2162	}
2163
2164	/* Save the unpacking parameters and set what we need here. */
2165	VMSVGAPACKPARAMS SavedParams;
2166	vmsvga3dOglSetUnpackParams(pState, pContext,
2167	pMipmapLevelSrc->mipmapSize.width,
2168	target == GL_TEXTURE_3D ? pMipmapLevelSrc->mipmapSize.height : 0,
2169	&SavedParams);
2170
2171	glBindTexture(pSurfaceDst->targetGL, pSurfaceDst->oglId.texture);
2172	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
2173
2174	for (uint32_t i = 0; i < cCopyBoxes; ++i)
2175	{
2176	SVGA3dCopyBox clipBox = pBox[i];
2177	vmsvgaR3ClipCopyBox(&pMipmapLevelSrc->mipmapSize, &pMipmapLevelDst->mipmapSize, &clipBox);
2178	if ( !clipBox.w
2179	\|\| !clipBox.h
2180	\|\| !clipBox.d)
2181	{
2182	LogFunc(("Skipped empty box.\n"));
2183	continue;
2184	}
2185
2186	LogFunc(("copy box %d,%d,%d %dx%d to %d,%d,%d\n",
2187	clipBox.srcx, clipBox.srcy, clipBox.srcz, clipBox.w, clipBox.h, clipBox.x, clipBox.y, clipBox.z));
2188
2189	uint32_t const u32BlockX = clipBox.srcx / pSurfaceSrc->cxBlock;
2190	uint32_t const u32BlockY = clipBox.srcy / pSurfaceSrc->cyBlock;
2191	uint32_t const u32BlockZ = clipBox.srcz;
2192	Assert(u32BlockX * pSurfaceSrc->cxBlock == clipBox.srcx);
2193	Assert(u32BlockY * pSurfaceSrc->cyBlock == clipBox.srcy);
2194
2195	uint8_t const pSrcBits = (uint8_t )pMipmapLevelSrc->pSurfaceData
2196	+ pMipmapLevelSrc->cbSurfacePlane * u32BlockZ
2197	+ pMipmapLevelSrc->cbSurfacePitch * u32BlockY
2198	+ pSurfaceSrc->cbBlock * u32BlockX;
2199
2200	if (target == GL_TEXTURE_3D)
2201	{
2202	if ( pSurfaceDst->internalFormatGL == GL_COMPRESSED_RGBA_S3TC_DXT1_EXT
2203	\|\| pSurfaceDst->internalFormatGL == GL_COMPRESSED_RGBA_S3TC_DXT3_EXT
2204	\|\| pSurfaceDst->internalFormatGL == GL_COMPRESSED_RGBA_S3TC_DXT5_EXT)
2205	{
2206	uint32_t const cBlocksX = (clipBox.w + pSurfaceSrc->cxBlock - 1) / pSurfaceSrc->cxBlock;
2207	uint32_t const cBlocksY = (clipBox.h + pSurfaceSrc->cyBlock - 1) / pSurfaceSrc->cyBlock;
2208	uint32_t const imageSize = cBlocksX * cBlocksY * clipBox.d * pSurfaceSrc->cbBlock;
2209	pState->ext.glCompressedTexSubImage3D(target, dest.mipmap,
2210	clipBox.x, clipBox.y, clipBox.z,
2211	clipBox.w, clipBox.h, clipBox.d,
2212	pSurfaceSrc->internalFormatGL, (GLsizei)imageSize, pSrcBits);
2213	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
2214	}
2215	else
2216	{
2217	pState->ext.glTexSubImage3D(target, dest.mipmap,
2218	clipBox.x, clipBox.y, clipBox.z,
2219	clipBox.w, clipBox.h, clipBox.d,
2220	pSurfaceSrc->formatGL, pSurfaceSrc->typeGL, pSrcBits);
2221	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
2222	}
2223	}
2224	else
2225	{
2226	if ( pSurfaceDst->internalFormatGL == GL_COMPRESSED_RGBA_S3TC_DXT1_EXT
2227	\|\| pSurfaceDst->internalFormatGL == GL_COMPRESSED_RGBA_S3TC_DXT3_EXT
2228	\|\| pSurfaceDst->internalFormatGL == GL_COMPRESSED_RGBA_S3TC_DXT5_EXT)
2229	{
2230	uint32_t const cBlocksX = (clipBox.w + pSurfaceSrc->cxBlock - 1) / pSurfaceSrc->cxBlock;
2231	uint32_t const cBlocksY = (clipBox.h + pSurfaceSrc->cyBlock - 1) / pSurfaceSrc->cyBlock;
2232	uint32_t const imageSize = cBlocksX * cBlocksY * pSurfaceSrc->cbBlock;
2233	pState->ext.glCompressedTexSubImage2D(target, dest.mipmap,
2234	clipBox.x, clipBox.y, clipBox.w, clipBox.h,
2235	pSurfaceSrc->internalFormatGL, (GLsizei)imageSize, pSrcBits);
2236	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
2237	}
2238	else
2239	{
2240	glTexSubImage2D(target, dest.mipmap,
2241	clipBox.x, clipBox.y, clipBox.w, clipBox.h,
2242	pSurfaceSrc->formatGL, pSurfaceSrc->typeGL, pSrcBits);
2243	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
2244	}
2245	}
2246	}
2247
2248	glBindTexture(pSurfaceDst->targetGL, 0);
2249	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
2250
2251	vmsvga3dOglRestoreUnpackParams(pState, pContext, &SavedParams);
2252
2253	return VINF_SUCCESS;
2254	}
2255
2256	PVGASTATE pThis = PDMDEVINS_2_DATA(pThisCC->pDevIns, PVGASTATE);
2257	for (uint32_t i = 0; i < cCopyBoxes; i++)
2258	{
2259	SVGA3dBox destBox, srcBox;
2260
2261	srcBox.x = pBox[i].srcx;
2262	srcBox.y = pBox[i].srcy;
2263	srcBox.z = pBox[i].srcz;
2264	srcBox.w = pBox[i].w;
2265	srcBox.h = pBox[i].h;
2266	srcBox.d = pBox[i].d;
2267
2268	destBox.x = pBox[i].x;
2269	destBox.y = pBox[i].y;
2270	destBox.z = pBox[i].z;
2271	destBox.w = pBox[i].w;
2272	destBox.h = pBox[i].h;
2273	destBox.d = pBox[i].d;
2274
2275	/* No stretching is required, therefore use SVGA3D_STRETCH_BLT_POINT which translated to GL_NEAREST. */
2276	rc = vmsvga3dSurfaceStretchBlt(pThis, pThisCC, &dest, &destBox, &src, &srcBox, SVGA3D_STRETCH_BLT_POINT);
2277	AssertRCReturn(rc, rc);
2278	}
2279	return VINF_SUCCESS;
2280	}
2281
2282
2283	/**
2284	* Saves texture unpacking parameters and loads the specified ones.
2285	*
2286	* @param pState The VMSVGA3D state structure.
2287	* @param pContext The active context.
2288	* @param cxRow The number of pixels in a row. 0 for the entire width.
2289	* @param cyImage The height of the image in pixels. 0 for the entire height.
2290	* @param pSave Where to save stuff.
2291	*/
2292	void vmsvga3dOglSetUnpackParams(PVMSVGA3DSTATE pState, PVMSVGA3DCONTEXT pContext, GLint cxRow, GLint cyImage,
2293	PVMSVGAPACKPARAMS pSave)
2294	{
2295	RT_NOREF(pState);
2296
2297	/*
2298	* Save (ignore errors, setting the defaults we want and avoids restore).
2299	*/
2300	pSave->iAlignment = 1;
2301	VMSVGA3D_ASSERT_GL_CALL(glGetIntegerv(GL_UNPACK_ALIGNMENT, &pSave->iAlignment), pState, pContext);
2302	pSave->cxRow = 0;
2303	VMSVGA3D_ASSERT_GL_CALL(glGetIntegerv(GL_UNPACK_ROW_LENGTH, &pSave->cxRow), pState, pContext);
2304	pSave->cyImage = 0;
2305	VMSVGA3D_ASSERT_GL_CALL(glGetIntegerv(GL_UNPACK_IMAGE_HEIGHT, &pSave->cyImage), pState, pContext);
2306
2307	#ifdef VMSVGA3D_PARANOID_TEXTURE_PACKING
2308	pSave->fSwapBytes = GL_FALSE;
2309	glGetBooleanv(GL_UNPACK_SWAP_BYTES, &pSave->fSwapBytes);
2310	Assert(pSave->fSwapBytes == GL_FALSE);
2311
2312	pSave->fLsbFirst = GL_FALSE;
2313	glGetBooleanv(GL_UNPACK_LSB_FIRST, &pSave->fLsbFirst);
2314	Assert(pSave->fLsbFirst == GL_FALSE);
2315
2316	pSave->cSkipRows = 0;
2317	glGetIntegerv(GL_UNPACK_SKIP_ROWS, &pSave->cSkipRows);
2318	Assert(pSave->cSkipRows == 0);
2319
2320	pSave->cSkipPixels = 0;
2321	glGetIntegerv(GL_UNPACK_SKIP_PIXELS, &pSave->cSkipPixels);
2322	Assert(pSave->cSkipPixels == 0);
2323
2324	pSave->cSkipImages = 0;
2325	glGetIntegerv(GL_UNPACK_SKIP_IMAGES, &pSave->cSkipImages);
2326	Assert(pSave->cSkipImages == 0);
2327
2328	VMSVGA3D_CLEAR_GL_ERRORS();
2329	#endif
2330
2331	/*
2332	* Setup unpack.
2333	*
2334	* Note! We use 1 as alignment here because we currently don't do any
2335	* aligning of line pitches anywhere.
2336	*/
2337	pSave->fChanged = 0;
2338	if (pSave->iAlignment != 1)
2339	{
2340	VMSVGA3D_ASSERT_GL_CALL(glPixelStorei(GL_UNPACK_ALIGNMENT, 1), pState, pContext);
2341	pSave->fChanged \|= VMSVGAPACKPARAMS_ALIGNMENT;
2342	}
2343	if (pSave->cxRow != cxRow)
2344	{
2345	VMSVGA3D_ASSERT_GL_CALL(glPixelStorei(GL_UNPACK_ROW_LENGTH, cxRow), pState, pContext);
2346	pSave->fChanged \|= VMSVGAPACKPARAMS_ROW_LENGTH;
2347	}
2348	if (pSave->cyImage != cyImage)
2349	{
2350	VMSVGA3D_ASSERT_GL_CALL(glPixelStorei(GL_UNPACK_IMAGE_HEIGHT, cyImage), pState, pContext);
2351	pSave->fChanged \|= VMSVGAPACKPARAMS_IMAGE_HEIGHT;
2352	}
2353	#ifdef VMSVGA3D_PARANOID_TEXTURE_PACKING
2354	if (pSave->fSwapBytes != 0)
2355	{
2356	VMSVGA3D_ASSERT_GL_CALL(glPixelStorei(GL_UNPACK_SWAP_BYTES, GL_FALSE), pState, pContext);
2357	pSave->fChanged \|= VMSVGAPACKPARAMS_SWAP_BYTES;
2358	}
2359	if (pSave->fLsbFirst != 0)
2360	{
2361	VMSVGA3D_ASSERT_GL_CALL(glPixelStorei(GL_UNPACK_LSB_FIRST, GL_FALSE), pState, pContext);
2362	pSave->fChanged \|= VMSVGAPACKPARAMS_LSB_FIRST;
2363	}
2364	if (pSave->cSkipRows != 0)
2365	{
2366	VMSVGA3D_ASSERT_GL_CALL(glPixelStorei(GL_UNPACK_SKIP_ROWS, 0), pState, pContext);
2367	pSave->fChanged \|= VMSVGAPACKPARAMS_SKIP_ROWS;
2368	}
2369	if (pSave->cSkipPixels != 0)
2370	{
2371	VMSVGA3D_ASSERT_GL_CALL(glPixelStorei(GL_UNPACK_SKIP_PIXELS, 0), pState, pContext);
2372	pSave->fChanged \|= VMSVGAPACKPARAMS_SKIP_PIXELS;
2373	}
2374	if (pSave->cSkipImages != 0)
2375	{
2376	VMSVGA3D_ASSERT_GL_CALL(glPixelStorei(GL_UNPACK_SKIP_IMAGES, 0), pState, pContext);
2377	pSave->fChanged \|= VMSVGAPACKPARAMS_SKIP_IMAGES;
2378	}
2379	#endif
2380	}
2381
2382
2383	/**
2384	* Restores texture unpacking parameters.
2385	*
2386	* @param pState The VMSVGA3D state structure.
2387	* @param pContext The active context.
2388	* @param pSave Where stuff was saved.
2389	*/
2390	void vmsvga3dOglRestoreUnpackParams(PVMSVGA3DSTATE pState, PVMSVGA3DCONTEXT pContext,
2391	PCVMSVGAPACKPARAMS pSave)
2392	{
2393	RT_NOREF(pState);
2394
2395	if (pSave->fChanged & VMSVGAPACKPARAMS_ALIGNMENT)
2396	VMSVGA3D_ASSERT_GL_CALL(glPixelStorei(GL_UNPACK_ALIGNMENT, pSave->iAlignment), pState, pContext);
2397	if (pSave->fChanged & VMSVGAPACKPARAMS_ROW_LENGTH)
2398	VMSVGA3D_ASSERT_GL_CALL(glPixelStorei(GL_UNPACK_ROW_LENGTH, pSave->cxRow), pState, pContext);
2399	if (pSave->fChanged & VMSVGAPACKPARAMS_IMAGE_HEIGHT)
2400	VMSVGA3D_ASSERT_GL_CALL(glPixelStorei(GL_UNPACK_IMAGE_HEIGHT, pSave->cyImage), pState, pContext);
2401	#ifdef VMSVGA3D_PARANOID_TEXTURE_PACKING
2402	if (pSave->fChanged & VMSVGAPACKPARAMS_SWAP_BYTES)
2403	VMSVGA3D_ASSERT_GL_CALL(glPixelStorei(GL_UNPACK_SWAP_BYTES, pSave->fSwapBytes), pState, pContext);
2404	if (pSave->fChanged & VMSVGAPACKPARAMS_LSB_FIRST)
2405	VMSVGA3D_ASSERT_GL_CALL(glPixelStorei(GL_UNPACK_LSB_FIRST, pSave->fLsbFirst), pState, pContext);
2406	if (pSave->fChanged & VMSVGAPACKPARAMS_SKIP_ROWS)
2407	VMSVGA3D_ASSERT_GL_CALL(glPixelStorei(GL_UNPACK_SKIP_ROWS, pSave->cSkipRows), pState, pContext);
2408	if (pSave->fChanged & VMSVGAPACKPARAMS_SKIP_PIXELS)
2409	VMSVGA3D_ASSERT_GL_CALL(glPixelStorei(GL_UNPACK_SKIP_PIXELS, pSave->cSkipPixels), pState, pContext);
2410	if (pSave->fChanged & VMSVGAPACKPARAMS_SKIP_IMAGES)
2411	VMSVGA3D_ASSERT_GL_CALL(glPixelStorei(GL_UNPACK_SKIP_IMAGES, pSave->cSkipImages), pState, pContext);
2412	#endif
2413	}
2414
2415	/**
2416	* Create D3D/OpenGL texture object for the specified surface.
2417	*
2418	* Surfaces are created when needed.
2419	*
2420	* @param pThisCC The device context.
2421	* @param pContext The context.
2422	* @param idAssociatedContext Probably the same as pContext->id.
2423	* @param pSurface The surface to create the texture for.
2424	*/
2425	static DECLCALLBACK(int) vmsvga3dBackCreateTexture(PVGASTATECC pThisCC, PVMSVGA3DCONTEXT pContext, uint32_t idAssociatedContext,
2426	PVMSVGA3DSURFACE pSurface)
2427	{
2428	PVMSVGA3DSTATE pState = pThisCC->svga.p3dState;
2429
2430	RT_NOREF(idAssociatedContext);
2431
2432	LogFunc(("sid=%u\n", pSurface->id));
2433
2434	uint32_t const numMipLevels = pSurface->cLevels;
2435
2436	/* Fugure out what kind of texture we are creating. */
2437	GLenum binding;
2438	GLenum target;
2439	if (pSurface->f.s.surface1Flags & SVGA3D_SURFACE_CUBEMAP)
2440	{
2441	Assert(pSurface->cFaces == 6);
2442
2443	binding = GL_TEXTURE_BINDING_CUBE_MAP;
2444	target = GL_TEXTURE_CUBE_MAP;
2445	}
2446	else
2447	{
2448	if (pSurface->paMipmapLevels[0].mipmapSize.depth > 1)
2449	{
2450	binding = GL_TEXTURE_BINDING_3D;
2451	target = GL_TEXTURE_3D;
2452	}
2453	else
2454	{
2455	Assert(pSurface->cFaces == 1);
2456
2457	binding = GL_TEXTURE_BINDING_2D;
2458	target = GL_TEXTURE_2D;
2459	}
2460	}
2461
2462	/* All textures are created in the SharedCtx. */
2463	uint32_t idPrevCtx = pState->idActiveContext;
2464	pContext = &pState->SharedCtx;
2465	VMSVGA3D_SET_CURRENT_CONTEXT(pState, pContext);
2466
2467	glGenTextures(1, &pSurface->oglId.texture);
2468	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
2469	if (pSurface->fEmulated)
2470	{
2471	glGenTextures(1, &pSurface->idEmulated);
2472	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
2473	}
2474	pSurface->enmOGLResType = VMSVGA3D_OGLRESTYPE_TEXTURE;
2475
2476	GLint activeTexture = 0;
2477	glGetIntegerv(binding, &activeTexture);
2478	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
2479
2480	/* Must bind texture to the current context in order to change it. */
2481	glBindTexture(target, pSurface->oglId.texture);
2482	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
2483
2484	/* Set the unpacking parameters. */
2485	VMSVGAPACKPARAMS SavedParams;
2486	vmsvga3dOglSetUnpackParams(pState, pContext, 0, 0, &SavedParams);
2487
2488	/** @todo Set the mip map generation filter settings. */
2489
2490	/* Set the mipmap base and max level parameters. */
2491	glTexParameteri(target, GL_TEXTURE_BASE_LEVEL, 0);
2492	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
2493	glTexParameteri(target, GL_TEXTURE_MAX_LEVEL, pSurface->cLevels - 1);
2494	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
2495
2496	if (pSurface->fDirty)
2497	LogFunc(("sync dirty texture\n"));
2498
2499	/* Always allocate and initialize all mipmap levels; non-initialized mipmap levels used as render targets cause failures. */
2500	if (target == GL_TEXTURE_3D)
2501	{
2502	for (uint32_t i = 0; i < numMipLevels; ++i)
2503	{
2504	/* Allocate and initialize texture memory. Passing the zero filled pSurfaceData avoids
2505	* exposing random host memory to the guest and helps a with the fedora 21 surface
2506	* corruption issues (launchpad, background, search field, login).
2507	*/
2508	PVMSVGA3DMIPMAPLEVEL pMipLevel = &pSurface->paMipmapLevels[i];
2509
2510	LogFunc(("sync dirty 3D texture mipmap level %d (pitch %x) (dirty %d)\n",
2511	i, pMipLevel->cbSurfacePitch, pMipLevel->fDirty));
2512
2513	if ( pSurface->internalFormatGL == GL_COMPRESSED_RGBA_S3TC_DXT1_EXT
2514	\|\| pSurface->internalFormatGL == GL_COMPRESSED_RGBA_S3TC_DXT3_EXT
2515	\|\| pSurface->internalFormatGL == GL_COMPRESSED_RGBA_S3TC_DXT5_EXT)
2516	{
2517	pState->ext.glCompressedTexImage3D(GL_TEXTURE_3D,
2518	i,
2519	pSurface->internalFormatGL,
2520	pMipLevel->mipmapSize.width,
2521	pMipLevel->mipmapSize.height,
2522	pMipLevel->mipmapSize.depth,
2523	0,
2524	pMipLevel->cbSurface,
2525	pMipLevel->pSurfaceData);
2526	}
2527	else
2528	{
2529	pState->ext.glTexImage3D(GL_TEXTURE_3D,
2530	i,
2531	pSurface->internalFormatGL,
2532	pMipLevel->mipmapSize.width,
2533	pMipLevel->mipmapSize.height,
2534	pMipLevel->mipmapSize.depth,
2535	0, /* border */
2536	pSurface->formatGL,
2537	pSurface->typeGL,
2538	pMipLevel->pSurfaceData);
2539	}
2540	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
2541
2542	pMipLevel->fDirty = false;
2543	}
2544	}
2545	else if (target == GL_TEXTURE_CUBE_MAP)
2546	{
2547	for (uint32_t iFace = 0; iFace < 6; ++iFace)
2548	{
2549	GLenum const Face = vmsvga3dCubemapFaceFromIndex(iFace);
2550
2551	for (uint32_t i = 0; i < numMipLevels; ++i)
2552	{
2553	PVMSVGA3DMIPMAPLEVEL pMipLevel = &pSurface->paMipmapLevels[iFace * numMipLevels + i];
2554	Assert(pMipLevel->mipmapSize.width == pMipLevel->mipmapSize.height);
2555	Assert(pMipLevel->mipmapSize.depth == 1);
2556
2557	LogFunc(("sync cube texture face %d mipmap level %d (dirty %d)\n",
2558	iFace, i, pMipLevel->fDirty));
2559
2560	if ( pSurface->internalFormatGL == GL_COMPRESSED_RGBA_S3TC_DXT1_EXT
2561	\|\| pSurface->internalFormatGL == GL_COMPRESSED_RGBA_S3TC_DXT3_EXT
2562	\|\| pSurface->internalFormatGL == GL_COMPRESSED_RGBA_S3TC_DXT5_EXT)
2563	{
2564	pState->ext.glCompressedTexImage2D(Face,
2565	i,
2566	pSurface->internalFormatGL,
2567	pMipLevel->mipmapSize.width,
2568	pMipLevel->mipmapSize.height,
2569	0,
2570	pMipLevel->cbSurface,
2571	pMipLevel->pSurfaceData);
2572	}
2573	else
2574	{
2575	glTexImage2D(Face,
2576	i,
2577	pSurface->internalFormatGL,
2578	pMipLevel->mipmapSize.width,
2579	pMipLevel->mipmapSize.height,
2580	0,
2581	pSurface->formatGL,
2582	pSurface->typeGL,
2583	pMipLevel->pSurfaceData);
2584	}
2585	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
2586
2587	pMipLevel->fDirty = false;
2588	}
2589	}
2590	}
2591	else if (target == GL_TEXTURE_2D)
2592	{
2593	for (uint32_t i = 0; i < numMipLevels; ++i)
2594	{
2595	/* Allocate and initialize texture memory. Passing the zero filled pSurfaceData avoids
2596	* exposing random host memory to the guest and helps a with the fedora 21 surface
2597	* corruption issues (launchpad, background, search field, login).
2598	*/
2599	PVMSVGA3DMIPMAPLEVEL pMipLevel = &pSurface->paMipmapLevels[i];
2600	Assert(pMipLevel->mipmapSize.depth == 1);
2601
2602	LogFunc(("sync dirty texture mipmap level %d (pitch %x) (dirty %d)\n",
2603	i, pMipLevel->cbSurfacePitch, pMipLevel->fDirty));
2604
2605	if ( pSurface->internalFormatGL == GL_COMPRESSED_RGBA_S3TC_DXT1_EXT
2606	\|\| pSurface->internalFormatGL == GL_COMPRESSED_RGBA_S3TC_DXT3_EXT
2607	\|\| pSurface->internalFormatGL == GL_COMPRESSED_RGBA_S3TC_DXT5_EXT)
2608	{
2609	pState->ext.glCompressedTexImage2D(GL_TEXTURE_2D,
2610	i,
2611	pSurface->internalFormatGL,
2612	pMipLevel->mipmapSize.width,
2613	pMipLevel->mipmapSize.height,
2614	0,
2615	pMipLevel->cbSurface,
2616	pMipLevel->pSurfaceData);
2617	}
2618	else
2619	{
2620	glTexImage2D(GL_TEXTURE_2D,
2621	i,
2622	pSurface->internalFormatGL,
2623	pMipLevel->mipmapSize.width,
2624	pMipLevel->mipmapSize.height,
2625	0,
2626	pSurface->formatGL,
2627	pSurface->typeGL,
2628	NULL);
2629	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
2630
2631	if (pSurface->fEmulated)
2632	{
2633	/* Bind the emulated texture and init it. */
2634	glBindTexture(GL_TEXTURE_2D, pSurface->idEmulated);
2635	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
2636
2637	glTexImage2D(GL_TEXTURE_2D,
2638	i,
2639	pSurface->internalFormatGL,
2640	pMipLevel->mipmapSize.width,
2641	pMipLevel->mipmapSize.height,
2642	0,
2643	pSurface->formatGL,
2644	pSurface->typeGL,
2645	NULL);
2646	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
2647	}
2648
2649	/* Fetch texture data: either to the actual or to the emulated texture.
2650	* The pSurfaceData buffer may be smaller than the entire texture
2651	* for emulated formats, in which case only part of the texture is synched.
2652	*/
2653	uint32_t cBlocksX = pMipLevel->mipmapSize.width / pSurface->cxBlock;
2654	uint32_t cBlocksY = pMipLevel->mipmapSize.height / pSurface->cyBlock;
2655	glTexSubImage2D(GL_TEXTURE_2D,
2656	i,
2657	0,
2658	0,
2659	cBlocksX,
2660	cBlocksY,
2661	pSurface->formatGL,
2662	pSurface->typeGL,
2663	pMipLevel->pSurfaceData);
2664	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
2665
2666	if (pSurface->fEmulated)
2667	{
2668	/* Update the actual texture using the format converter. */
2669	FormatConvUpdateTexture(pState, pContext, pSurface, i);
2670
2671	/* Rebind the actual texture. */
2672	glBindTexture(GL_TEXTURE_2D, pSurface->oglId.texture);
2673	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
2674	}
2675	}
2676	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
2677
2678	pMipLevel->fDirty = false;
2679	}
2680	}
2681
2682	pSurface->fDirty = false;
2683
2684	/* Restore unpacking parameters. */
2685	vmsvga3dOglRestoreUnpackParams(pState, pContext, &SavedParams);
2686
2687	/* Restore the old active texture. */
2688	glBindTexture(target, activeTexture);
2689	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
2690
2691	pSurface->f.s.surface1Flags \|= SVGA3D_SURFACE_HINT_TEXTURE;
2692	pSurface->targetGL = target;
2693	pSurface->bindingGL = binding;
2694
2695	if (idPrevCtx < pState->cContexts && pState->papContexts[idPrevCtx]->id == idPrevCtx)
2696	VMSVGA3D_SET_CURRENT_CONTEXT(pState, pState->papContexts[idPrevCtx]);
2697	return VINF_SUCCESS;
2698	}
2699
2700
2701	/**
2702	* Backend worker for implementing SVGA_3D_CMD_SURFACE_STRETCHBLT.
2703	*
2704	* @returns VBox status code.
2705	* @param pThis The VGA device instance.
2706	* @param pState The VMSVGA3d state.
2707	* @param pDstSurface The destination host surface.
2708	* @param uDstFace The destination face (valid).
2709	* @param uDstMipmap The destination mipmap level (valid).
2710	* @param pDstBox The destination box.
2711	* @param pSrcSurface The source host surface.
2712	* @param uSrcFace The destination face (valid).
2713	* @param uSrcMipmap The source mimap level (valid).
2714	* @param pSrcBox The source box.
2715	* @param enmMode The strecht blt mode .
2716	* @param pContext The VMSVGA3d context (already current for OGL).
2717	*/
2718	static DECLCALLBACK(int) vmsvga3dBackSurfaceStretchBlt(PVGASTATE pThis, PVMSVGA3DSTATE pState,
2719	PVMSVGA3DSURFACE pDstSurface, uint32_t uDstFace, uint32_t uDstMipmap, SVGA3dBox const *pDstBox,
2720	PVMSVGA3DSURFACE pSrcSurface, uint32_t uSrcFace, uint32_t uSrcMipmap, SVGA3dBox const *pSrcBox,
2721	SVGA3dStretchBltMode enmMode, PVMSVGA3DCONTEXT pContext)
2722	{
2723	RT_NOREF(pThis);
2724
2725	AssertReturn( RT_BOOL(pSrcSurface->f.s.surface1Flags & SVGA3D_SURFACE_HINT_DEPTHSTENCIL)
2726	== RT_BOOL(pDstSurface->f.s.surface1Flags & SVGA3D_SURFACE_HINT_DEPTHSTENCIL), VERR_NOT_IMPLEMENTED);
2727
2728	GLenum glAttachment = GL_COLOR_ATTACHMENT0;
2729	GLbitfield glMask = GL_COLOR_BUFFER_BIT;
2730	if (pDstSurface->f.s.surface1Flags & SVGA3D_SURFACE_HINT_DEPTHSTENCIL)
2731	{
2732	/** @todo Need GL_DEPTH_STENCIL_ATTACHMENT for depth/stencil formats? */
2733	glAttachment = GL_DEPTH_ATTACHMENT;
2734	glMask = GL_DEPTH_BUFFER_BIT;
2735	}
2736
2737	/* Activate the read and draw framebuffer objects. */
2738	pState->ext.glBindFramebuffer(GL_READ_FRAMEBUFFER, pContext->idReadFramebuffer);
2739	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
2740	pState->ext.glBindFramebuffer(GL_DRAW_FRAMEBUFFER, pContext->idDrawFramebuffer);
2741	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
2742
2743	/* Bind the source and destination objects to the right place. */
2744	GLenum textarget;
2745	if (pSrcSurface->targetGL == GL_TEXTURE_CUBE_MAP)
2746	textarget = vmsvga3dCubemapFaceFromIndex(uSrcFace);
2747	else
2748	{
2749	/// @todo later AssertMsg(pSrcSurface->targetGL == GL_TEXTURE_2D, ("%#x\n", pSrcSurface->targetGL));
2750	textarget = GL_TEXTURE_2D;
2751	}
2752	pState->ext.glFramebufferTexture2D(GL_READ_FRAMEBUFFER, glAttachment, textarget,
2753	pSrcSurface->oglId.texture, uSrcMipmap);
2754	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
2755
2756	if (pDstSurface->targetGL == GL_TEXTURE_CUBE_MAP)
2757	textarget = vmsvga3dCubemapFaceFromIndex(uDstFace);
2758	else
2759	{
2760	/// @todo later AssertMsg(pDstSurface->targetGL == GL_TEXTURE_2D, ("%#x\n", pDstSurface->targetGL));
2761	textarget = GL_TEXTURE_2D;
2762	}
2763	pState->ext.glFramebufferTexture2D(GL_DRAW_FRAMEBUFFER, glAttachment, textarget,
2764	pDstSurface->oglId.texture, uDstMipmap);
2765	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
2766
2767	Log(("src conv. (%d,%d)(%d,%d); dest conv (%d,%d)(%d,%d)\n",
2768	pSrcBox->x, D3D_TO_OGL_Y_COORD(pSrcSurface, pSrcBox->y + pSrcBox->h),
2769	pSrcBox->x + pSrcBox->w, D3D_TO_OGL_Y_COORD(pSrcSurface, pSrcBox->y),
2770	pDstBox->x, D3D_TO_OGL_Y_COORD(pDstSurface, pDstBox->y + pDstBox->h),
2771	pDstBox->x + pDstBox->w, D3D_TO_OGL_Y_COORD(pDstSurface, pDstBox->y)));
2772
2773	pState->ext.glBlitFramebuffer(pSrcBox->x,
2774	pSrcBox->y,
2775	pSrcBox->x + pSrcBox->w, /* exclusive. */
2776	pSrcBox->y + pSrcBox->h,
2777	pDstBox->x,
2778	pDstBox->y,
2779	pDstBox->x + pDstBox->w, /* exclusive. */
2780	pDstBox->y + pDstBox->h,
2781	glMask,
2782	(enmMode == SVGA3D_STRETCH_BLT_POINT) ? GL_NEAREST : GL_LINEAR);
2783	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
2784
2785	/* Reset the frame buffer association */
2786	pState->ext.glBindFramebuffer(GL_FRAMEBUFFER, pContext->idFramebuffer);
2787	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
2788
2789	return VINF_SUCCESS;
2790	}
2791
2792	/**
2793	* Save texture packing parameters and loads those appropriate for the given
2794	* surface.
2795	*
2796	* @param pState The VMSVGA3D state structure.
2797	* @param pContext The active context.
2798	* @param pSurface The surface.
2799	* @param pSave Where to save stuff.
2800	*/
2801	void vmsvga3dOglSetPackParams(PVMSVGA3DSTATE pState, PVMSVGA3DCONTEXT pContext, PVMSVGA3DSURFACE pSurface,
2802	PVMSVGAPACKPARAMS pSave)
2803	{
2804	RT_NOREF(pState);
2805	/*
2806	* Save (ignore errors, setting the defaults we want and avoids restore).
2807	*/
2808	pSave->iAlignment = 1;
2809	VMSVGA3D_ASSERT_GL_CALL(glGetIntegerv(GL_PACK_ALIGNMENT, &pSave->iAlignment), pState, pContext);
2810	pSave->cxRow = 0;
2811	VMSVGA3D_ASSERT_GL_CALL(glGetIntegerv(GL_PACK_ROW_LENGTH, &pSave->cxRow), pState, pContext);
2812
2813	#ifdef VMSVGA3D_PARANOID_TEXTURE_PACKING
2814	pSave->cyImage = 0;
2815	glGetIntegerv(GL_PACK_IMAGE_HEIGHT, &pSave->cyImage);
2816	Assert(pSave->cyImage == 0);
2817
2818	pSave->fSwapBytes = GL_FALSE;
2819	glGetBooleanv(GL_PACK_SWAP_BYTES, &pSave->fSwapBytes);
2820	Assert(pSave->fSwapBytes == GL_FALSE);
2821
2822	pSave->fLsbFirst = GL_FALSE;
2823	glGetBooleanv(GL_PACK_LSB_FIRST, &pSave->fLsbFirst);
2824	Assert(pSave->fLsbFirst == GL_FALSE);
2825
2826	pSave->cSkipRows = 0;
2827	glGetIntegerv(GL_PACK_SKIP_ROWS, &pSave->cSkipRows);
2828	Assert(pSave->cSkipRows == 0);
2829
2830	pSave->cSkipPixels = 0;
2831	glGetIntegerv(GL_PACK_SKIP_PIXELS, &pSave->cSkipPixels);
2832	Assert(pSave->cSkipPixels == 0);
2833
2834	pSave->cSkipImages = 0;
2835	glGetIntegerv(GL_PACK_SKIP_IMAGES, &pSave->cSkipImages);
2836	Assert(pSave->cSkipImages == 0);
2837
2838	VMSVGA3D_CLEAR_GL_ERRORS();
2839	#endif
2840
2841	/*
2842	* Setup unpack.
2843	*
2844	* Note! We use 1 as alignment here because we currently don't do any
2845	* aligning of line pitches anywhere.
2846	*/
2847	NOREF(pSurface);
2848	if (pSave->iAlignment != 1)
2849	VMSVGA3D_ASSERT_GL_CALL(glPixelStorei(GL_PACK_ALIGNMENT, 1), pState, pContext);
2850	if (pSave->cxRow != 0)
2851	VMSVGA3D_ASSERT_GL_CALL(glPixelStorei(GL_PACK_ROW_LENGTH, 0), pState, pContext);
2852	#ifdef VMSVGA3D_PARANOID_TEXTURE_PACKING
2853	if (pSave->cyImage != 0)
2854	VMSVGA3D_ASSERT_GL_CALL(glPixelStorei(GL_PACK_IMAGE_HEIGHT, 0), pState, pContext);
2855	if (pSave->fSwapBytes != 0)
2856	VMSVGA3D_ASSERT_GL_CALL(glPixelStorei(GL_PACK_SWAP_BYTES, GL_FALSE), pState, pContext);
2857	if (pSave->fLsbFirst != 0)
2858	VMSVGA3D_ASSERT_GL_CALL(glPixelStorei(GL_PACK_LSB_FIRST, GL_FALSE), pState, pContext);
2859	if (pSave->cSkipRows != 0)
2860	VMSVGA3D_ASSERT_GL_CALL(glPixelStorei(GL_PACK_SKIP_ROWS, 0), pState, pContext);
2861	if (pSave->cSkipPixels != 0)
2862	VMSVGA3D_ASSERT_GL_CALL(glPixelStorei(GL_PACK_SKIP_PIXELS, 0), pState, pContext);
2863	if (pSave->cSkipImages != 0)
2864	VMSVGA3D_ASSERT_GL_CALL(glPixelStorei(GL_PACK_SKIP_IMAGES, 0), pState, pContext);
2865	#endif
2866	}
2867
2868
2869	/**
2870	* Restores texture packing parameters.
2871	*
2872	* @param pState The VMSVGA3D state structure.
2873	* @param pContext The active context.
2874	* @param pSurface The surface.
2875	* @param pSave Where stuff was saved.
2876	*/
2877	void vmsvga3dOglRestorePackParams(PVMSVGA3DSTATE pState, PVMSVGA3DCONTEXT pContext, PVMSVGA3DSURFACE pSurface,
2878	PCVMSVGAPACKPARAMS pSave)
2879	{
2880	RT_NOREF(pState, pSurface);
2881	if (pSave->iAlignment != 1)
2882	VMSVGA3D_ASSERT_GL_CALL(glPixelStorei(GL_PACK_ALIGNMENT, pSave->iAlignment), pState, pContext);
2883	if (pSave->cxRow != 0)
2884	VMSVGA3D_ASSERT_GL_CALL(glPixelStorei(GL_PACK_ROW_LENGTH, pSave->cxRow), pState, pContext);
2885	#ifdef VMSVGA3D_PARANOID_TEXTURE_PACKING
2886	if (pSave->cyImage != 0)
2887	VMSVGA3D_ASSERT_GL_CALL(glPixelStorei(GL_PACK_IMAGE_HEIGHT, pSave->cyImage), pState, pContext);
2888	if (pSave->fSwapBytes != 0)
2889	VMSVGA3D_ASSERT_GL_CALL(glPixelStorei(GL_PACK_SWAP_BYTES, pSave->fSwapBytes), pState, pContext);
2890	if (pSave->fLsbFirst != 0)
2891	VMSVGA3D_ASSERT_GL_CALL(glPixelStorei(GL_PACK_LSB_FIRST, pSave->fLsbFirst), pState, pContext);
2892	if (pSave->cSkipRows != 0)
2893	VMSVGA3D_ASSERT_GL_CALL(glPixelStorei(GL_PACK_SKIP_ROWS, pSave->cSkipRows), pState, pContext);
2894	if (pSave->cSkipPixels != 0)
2895	VMSVGA3D_ASSERT_GL_CALL(glPixelStorei(GL_PACK_SKIP_PIXELS, pSave->cSkipPixels), pState, pContext);
2896	if (pSave->cSkipImages != 0)
2897	VMSVGA3D_ASSERT_GL_CALL(glPixelStorei(GL_PACK_SKIP_IMAGES, pSave->cSkipImages), pState, pContext);
2898	#endif
2899	}
2900
2901
2902	/**
2903	* Backend worker for implementing SVGA_3D_CMD_SURFACE_DMA that copies one box.
2904	*
2905	* @returns Failure status code or @a rc.
2906	* @param pThis The shared VGA/VMSVGA instance data.
2907	* @param pThisCC The VGA/VMSVGA state for ring-3.
2908	* @param pState The VMSVGA3d state.
2909	* @param pSurface The host surface.
2910	* @param pMipLevel Mipmap level. The caller knows it already.
2911	* @param uHostFace The host face (valid).
2912	* @param uHostMipmap The host mipmap level (valid).
2913	* @param GuestPtr The guest pointer.
2914	* @param cbGuestPitch The guest pitch.
2915	* @param transfer The transfer direction.
2916	* @param pBox The box to copy (clipped, valid, except for guest's srcx, srcy, srcz).
2917	* @param pContext The context (for OpenGL).
2918	* @param rc The current rc for all boxes.
2919	* @param iBox The current box number (for Direct 3D).
2920	*/
2921	static DECLCALLBACK(int) vmsvga3dBackSurfaceDMACopyBox(PVGASTATE pThis, PVGASTATECC pThisCC, PVMSVGA3DSTATE pState, PVMSVGA3DSURFACE pSurface,
2922	PVMSVGA3DMIPMAPLEVEL pMipLevel, uint32_t uHostFace, uint32_t uHostMipmap,
2923	SVGAGuestPtr GuestPtr, uint32_t cbGuestPitch, SVGA3dTransferType transfer,
2924	SVGA3dCopyBox const *pBox, PVMSVGA3DCONTEXT pContext, int rc, int iBox)
2925	{
2926	RT_NOREF(iBox);
2927
2928	switch (pSurface->enmOGLResType)
2929	{
2930	case VMSVGA3D_OGLRESTYPE_TEXTURE:
2931	{
2932	uint32_t cbSurfacePitch;
2933	uint8_t *pDoubleBuffer;
2934	uint64_t offHst;
2935
2936	uint32_t const u32HostBlockX = pBox->x / pSurface->cxBlock;
2937	uint32_t const u32HostBlockY = pBox->y / pSurface->cyBlock;
2938	uint32_t const u32HostZ = pBox->z;
2939	Assert(u32HostBlockX * pSurface->cxBlock == pBox->x);
2940	Assert(u32HostBlockY * pSurface->cyBlock == pBox->y);
2941
2942	uint32_t const u32GuestBlockX = pBox->srcx / pSurface->cxBlock;
2943	uint32_t const u32GuestBlockY = pBox->srcy / pSurface->cyBlock;
2944	uint32_t const u32GuestZ = pBox->srcz / pSurface->cyBlock;
2945	Assert(u32GuestBlockX * pSurface->cxBlock == pBox->srcx);
2946	Assert(u32GuestBlockY * pSurface->cyBlock == pBox->srcy);
2947
2948	uint32_t const cBlocksX = (pBox->w + pSurface->cxBlock - 1) / pSurface->cxBlock;
2949	uint32_t const cBlocksY = (pBox->h + pSurface->cyBlock - 1) / pSurface->cyBlock;
2950	AssertMsgReturn(cBlocksX && cBlocksY, ("Empty box %dx%d\n", pBox->w, pBox->h), VERR_INTERNAL_ERROR);
2951
2952	GLenum texImageTarget;
2953	if (pSurface->targetGL == GL_TEXTURE_3D)
2954	{
2955	texImageTarget = GL_TEXTURE_3D;
2956	}
2957	else if (pSurface->targetGL == GL_TEXTURE_CUBE_MAP)
2958	{
2959	texImageTarget = vmsvga3dCubemapFaceFromIndex(uHostFace);
2960	}
2961	else
2962	{
2963	AssertMsg(pSurface->targetGL == GL_TEXTURE_2D, ("%#x\n", pSurface->targetGL));
2964	texImageTarget = GL_TEXTURE_2D;
2965	}
2966
2967	/* The buffer must be large enough to hold entire texture in the OpenGL format. */
2968	pDoubleBuffer = (uint8_t )RTMemAlloc(pSurface->cbBlockGL pMipLevel->cBlocks);
2969	AssertReturn(pDoubleBuffer, VERR_NO_MEMORY);
2970
2971	if (transfer == SVGA3D_READ_HOST_VRAM)
2972	{
2973	/* Read the entire texture to the double buffer. */
2974	GLint activeTexture;
2975
2976	/* Must bind texture to the current context in order to read it. */
2977	glGetIntegerv(pSurface->bindingGL, &activeTexture);
2978	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
2979
2980	glBindTexture(pSurface->targetGL, GLTextureId(pSurface));
2981	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
2982
2983	if (pSurface->fEmulated)
2984	{
2985	FormatConvReadTexture(pState, pContext, pSurface, uHostMipmap);
2986	}
2987
2988	/* Set row length and alignment of the input data. */
2989	VMSVGAPACKPARAMS SavedParams;
2990	vmsvga3dOglSetPackParams(pState, pContext, pSurface, &SavedParams);
2991
2992	if ( pSurface->internalFormatGL == GL_COMPRESSED_RGBA_S3TC_DXT1_EXT
2993	\|\| pSurface->internalFormatGL == GL_COMPRESSED_RGBA_S3TC_DXT3_EXT
2994	\|\| pSurface->internalFormatGL == GL_COMPRESSED_RGBA_S3TC_DXT5_EXT)
2995	{
2996	pState->ext.glGetCompressedTexImage(texImageTarget, uHostMipmap, pDoubleBuffer);
2997	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
2998	}
2999	else
3000	{
3001	glGetTexImage(texImageTarget, uHostMipmap, pSurface->formatGL, pSurface->typeGL, pDoubleBuffer);
3002	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
3003	}
3004
3005	vmsvga3dOglRestorePackParams(pState, pContext, pSurface, &SavedParams);
3006
3007	/* Restore the old active texture. */
3008	glBindTexture(pSurface->targetGL, activeTexture);
3009	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
3010
3011	offHst = u32HostBlockX * pSurface->cbBlock + u32HostBlockY * pMipLevel->cbSurfacePitch + u32HostZ * pMipLevel->cbSurfacePlane;
3012	cbSurfacePitch = pMipLevel->cbSurfacePitch;
3013	}
3014	else
3015	{
3016	/* The buffer will contain only the copied rectangle. */
3017	offHst = 0;
3018	cbSurfacePitch = cBlocksX * pSurface->cbBlock;
3019	}
3020
3021	uint64_t offGst = u32GuestBlockX * pSurface->cbBlock + u32GuestBlockY * cbGuestPitch + u32GuestZ * cbGuestPitch * pMipLevel->mipmapSize.height;
3022
3023	for (uint32_t iPlane = 0; iPlane < pBox->d; ++iPlane)
3024	{
3025	AssertBreak(offHst < UINT32_MAX);
3026	AssertBreak(offGst < UINT32_MAX);
3027
3028	rc = vmsvgaR3GmrTransfer(pThis,
3029	pThisCC,
3030	transfer,
3031	pDoubleBuffer,
3032	pMipLevel->cbSurface,
3033	(uint32_t)offHst,
3034	cbSurfacePitch,
3035	GuestPtr,
3036	(uint32_t)offGst,
3037	cbGuestPitch,
3038	cBlocksX * pSurface->cbBlock,
3039	cBlocksY);
3040	AssertRC(rc);
3041
3042	offHst += pMipLevel->cbSurfacePlane;
3043	offGst += pMipLevel->mipmapSize.height * cbGuestPitch;
3044	}
3045
3046	/* Update the opengl surface data. */
3047	if (transfer == SVGA3D_WRITE_HOST_VRAM)
3048	{
3049	GLint activeTexture = 0;
3050	glGetIntegerv(pSurface->bindingGL, &activeTexture);
3051	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
3052
3053	/* Must bind texture to the current context in order to change it. */
3054	glBindTexture(pSurface->targetGL, GLTextureId(pSurface));
3055	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
3056
3057	LogFunc(("copy texture mipmap level %d (pitch %x)\n", uHostMipmap, pMipLevel->cbSurfacePitch));
3058
3059	/* Set row length and alignment of the input data. */
3060	/* We do not need to set ROW_LENGTH to w here, because the image in pDoubleBuffer is tightly packed. */
3061	VMSVGAPACKPARAMS SavedParams;
3062	vmsvga3dOglSetUnpackParams(pState, pContext, 0, 0, &SavedParams);
3063
3064	if (texImageTarget == GL_TEXTURE_3D)
3065	{
3066	if ( pSurface->internalFormatGL == GL_COMPRESSED_RGBA_S3TC_DXT1_EXT
3067	\|\| pSurface->internalFormatGL == GL_COMPRESSED_RGBA_S3TC_DXT3_EXT
3068	\|\| pSurface->internalFormatGL == GL_COMPRESSED_RGBA_S3TC_DXT5_EXT)
3069	{
3070	pState->ext.glCompressedTexSubImage3D(texImageTarget,
3071	uHostMipmap,
3072	pBox->x,
3073	pBox->y,
3074	pBox->z,
3075	pBox->w,
3076	pBox->h,
3077	pBox->d,
3078	pSurface->internalFormatGL,
3079	cbSurfacePitch * cBlocksY * pBox->d,
3080	pDoubleBuffer);
3081	}
3082	else
3083	{
3084	pState->ext.glTexSubImage3D(texImageTarget,
3085	uHostMipmap,
3086	u32HostBlockX,
3087	u32HostBlockY,
3088	pBox->z,
3089	cBlocksX,
3090	cBlocksY,
3091	pBox->d,
3092	pSurface->formatGL,
3093	pSurface->typeGL,
3094	pDoubleBuffer);
3095	}
3096	}
3097	else
3098	{
3099	if ( pSurface->internalFormatGL == GL_COMPRESSED_RGBA_S3TC_DXT1_EXT
3100	\|\| pSurface->internalFormatGL == GL_COMPRESSED_RGBA_S3TC_DXT3_EXT
3101	\|\| pSurface->internalFormatGL == GL_COMPRESSED_RGBA_S3TC_DXT5_EXT)
3102	{
3103	pState->ext.glCompressedTexSubImage2D(texImageTarget,
3104	uHostMipmap,
3105	pBox->x,
3106	pBox->y,
3107	pBox->w,
3108	pBox->h,
3109	pSurface->internalFormatGL,
3110	cbSurfacePitch * cBlocksY,
3111	pDoubleBuffer);
3112	}
3113	else
3114	{
3115	glTexSubImage2D(texImageTarget,
3116	uHostMipmap,
3117	u32HostBlockX,
3118	u32HostBlockY,
3119	cBlocksX,
3120	cBlocksY,
3121	pSurface->formatGL,
3122	pSurface->typeGL,
3123	pDoubleBuffer);
3124	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
3125
3126	if (pSurface->fEmulated)
3127	{
3128	/* Convert the texture to the actual texture if necessary */
3129	FormatConvUpdateTexture(pState, pContext, pSurface, uHostMipmap);
3130	}
3131	}
3132	}
3133	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
3134
3135	/* Restore old values. */
3136	vmsvga3dOglRestoreUnpackParams(pState, pContext, &SavedParams);
3137
3138	/* Restore the old active texture. */
3139	glBindTexture(pSurface->targetGL, activeTexture);
3140	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
3141	}
3142
3143	Log4(("first line:\n%.Rhxd\n", cBlocksX pSurface->cbBlock, pDoubleBuffer));
3144
3145	/* Free the double buffer. */
3146	RTMemFree(pDoubleBuffer);
3147	break;
3148	}
3149
3150	case VMSVGA3D_OGLRESTYPE_BUFFER:
3151	{
3152	/* Buffers are uncompressed. */
3153	AssertReturn(pSurface->cxBlock == 1 && pSurface->cyBlock == 1, VERR_INTERNAL_ERROR);
3154
3155	/* Caller already clipped pBox and buffers are 1-dimensional. */
3156	Assert(pBox->y == 0 && pBox->h == 1 && pBox->z == 0 && pBox->d == 1);
3157
3158	VMSVGA3D_CLEAR_GL_ERRORS();
3159	pState->ext.glBindBuffer(GL_ARRAY_BUFFER, pSurface->oglId.buffer);
3160	if (VMSVGA3D_GL_IS_SUCCESS(pContext))
3161	{
3162	GLenum enmGlTransfer = (transfer == SVGA3D_READ_HOST_VRAM) ? GL_READ_ONLY : GL_WRITE_ONLY;
3163	uint8_t pbData = (uint8_t )pState->ext.glMapBuffer(GL_ARRAY_BUFFER, enmGlTransfer);
3164	if (RT_LIKELY(pbData != NULL))
3165	{
3166	#if defined(VBOX_STRICT) && defined(RT_OS_DARWIN)
3167	GLint cbStrictBufSize;
3168	glGetBufferParameteriv(GL_ARRAY_BUFFER, GL_BUFFER_SIZE, &cbStrictBufSize);
3169	Assert(VMSVGA3D_GL_IS_SUCCESS(pContext));
3170	AssertMsg(cbStrictBufSize >= (int32_t)pMipLevel->cbSurface,
3171	("cbStrictBufSize=%#x cbSurface=%#x pContext->id=%#x\n", (uint32_t)cbStrictBufSize, pMipLevel->cbSurface, pContext->id));
3172	#endif
3173	Log(("Lock %s memory for rectangle (%d,%d)(%d,%d)\n",
3174	(pSurface->f.s.surface1Flags & VMSVGA3D_SURFACE_HINT_SWITCH_MASK) == SVGA3D_SURFACE_HINT_VERTEXBUFFER ? "vertex" :
3175	(pSurface->f.s.surface1Flags & VMSVGA3D_SURFACE_HINT_SWITCH_MASK) == SVGA3D_SURFACE_HINT_INDEXBUFFER ? "index" : "buffer",
3176	pBox->x, pBox->y, pBox->x + pBox->w, pBox->y + pBox->h));
3177
3178	/* The caller already copied the data to the pMipLevel->pSurfaceData buffer, see VMSVGA3DSURFACE_NEEDS_DATA. */
3179	uint32_t const offHst = pBox->x * pSurface->cbBlock;
3180	uint32_t const cbWidth = pBox->w * pSurface->cbBlock;
3181
3182	memcpy(pbData + offHst, (uint8_t *)pMipLevel->pSurfaceData + offHst, cbWidth);
3183
3184	Log4(("Buffer updated at [0x%x;0x%x):\n%.Rhxd\n", offHst, offHst + cbWidth, cbWidth, (uint8_t )pbData + offHst));
3185
3186	pState->ext.glUnmapBuffer(GL_ARRAY_BUFFER);
3187	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
3188	}
3189	else
3190	VMSVGA3D_GL_GET_AND_COMPLAIN(pState, pContext, ("glMapBuffer(GL_ARRAY_BUFFER, %#x) -> NULL\n", enmGlTransfer));
3191	}
3192	else
3193	VMSVGA3D_GL_COMPLAIN(pState, pContext, ("glBindBuffer(GL_ARRAY_BUFFER, %#x)\n", pSurface->oglId.buffer));
3194	pState->ext.glBindBuffer(GL_ARRAY_BUFFER, 0);
3195	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
3196	break;
3197	}
3198
3199	default:
3200	AssertFailed();
3201	break;
3202	}
3203
3204	return rc;
3205	}
3206
3207	static DECLCALLBACK(int) vmsvga3dBackGenerateMipmaps(PVGASTATECC pThisCC, uint32_t sid, SVGA3dTextureFilter filter)
3208	{
3209	PVMSVGA3DSTATE pState = pThisCC->svga.p3dState;
3210	PVMSVGA3DSURFACE pSurface;
3211	int rc = VINF_SUCCESS;
3212	PVMSVGA3DCONTEXT pContext;
3213	uint32_t cid;
3214	GLint activeTexture = 0;
3215
3216	AssertReturn(pState, VERR_NO_MEMORY);
3217
3218	rc = vmsvga3dSurfaceFromSid(pState, sid, &pSurface);
3219	AssertRCReturn(rc, rc);
3220
3221	Assert(filter != SVGA3D_TEX_FILTER_FLATCUBIC);
3222	Assert(filter != SVGA3D_TEX_FILTER_GAUSSIANCUBIC);
3223	pSurface->autogenFilter = filter;
3224
3225	LogFunc(("sid=%u filter=%d\n", sid, filter));
3226
3227	cid = SVGA3D_INVALID_ID;
3228	pContext = &pState->SharedCtx;
3229	VMSVGA3D_SET_CURRENT_CONTEXT(pState, pContext);
3230
3231	if (pSurface->oglId.texture == OPENGL_INVALID_ID)
3232	{
3233	/* Unknown surface type; turn it into a texture. */
3234	LogFunc(("unknown src surface id=%x type=%d format=%d -> create texture\n", sid, pSurface->f.s.surface1Flags, pSurface->format));
3235	rc = vmsvga3dBackCreateTexture(pThisCC, pContext, cid, pSurface);
3236	AssertRCReturn(rc, rc);
3237	}
3238	else
3239	{
3240	/** @todo new filter */
3241	AssertFailed();
3242	}
3243
3244	glGetIntegerv(pSurface->bindingGL, &activeTexture);
3245	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
3246
3247	/* Must bind texture to the current context in order to change it. */
3248	glBindTexture(pSurface->targetGL, pSurface->oglId.texture);
3249	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
3250
3251	/* Generate the mip maps. */
3252	pState->ext.glGenerateMipmap(pSurface->targetGL);
3253	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
3254
3255	/* Restore the old texture. */
3256	glBindTexture(pSurface->targetGL, activeTexture);
3257	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
3258
3259	return VINF_SUCCESS;
3260	}
3261
3262
3263	#ifdef RT_OS_LINUX
3264	/**
3265	* X11 event handling thread.
3266	*
3267	* @returns VINF_SUCCESS (ignored)
3268	* @param hThreadSelf thread handle
3269	* @param pvUser pointer to pState structure
3270	*/
3271	DECLCALLBACK(int) vmsvga3dXEventThread(RTTHREAD hThreadSelf, void *pvUser)
3272	{
3273	RT_NOREF(hThreadSelf);
3274	PVMSVGA3DSTATE pState = (PVMSVGA3DSTATE)pvUser;
3275	while (!pState->bTerminate)
3276	{
3277	while (XPending(pState->display) > 0)
3278	{
3279	XEvent event;
3280	XNextEvent(pState->display, &event);
3281
3282	switch (event.type)
3283	{
3284	default:
3285	break;
3286	}
3287	}
3288	/* sleep for 16ms to not burn too many cycles */
3289	RTThreadSleep(16);
3290	}
3291	return VINF_SUCCESS;
3292	}
3293	#endif // RT_OS_LINUX
3294
3295
3296	/**
3297	* Create a new 3d context
3298	*
3299	* @returns VBox status code.
3300	* @param pThisCC The VGA/VMSVGA state for ring-3.
3301	* @param cid Context id
3302	* @param fFlags VMSVGA3D_DEF_CTX_F_XXX.
3303	*/
3304	int vmsvga3dContextDefineOgl(PVGASTATECC pThisCC, uint32_t cid, uint32_t fFlags)
3305	{
3306	int rc;
3307	PVMSVGA3DCONTEXT pContext;
3308	PVMSVGA3DSTATE pState = pThisCC->svga.p3dState;
3309
3310	AssertReturn(pState, VERR_NO_MEMORY);
3311	AssertReturn( cid < SVGA3D_MAX_CONTEXT_IDS
3312	\|\| (cid == VMSVGA3D_SHARED_CTX_ID && (fFlags & VMSVGA3D_DEF_CTX_F_SHARED_CTX)), VERR_INVALID_PARAMETER);
3313	#if !defined(VBOX_VMSVGA3D_DUAL_OPENGL_PROFILE) \|\| !(defined(RT_OS_DARWIN))
3314	AssertReturn(!(fFlags & VMSVGA3D_DEF_CTX_F_OTHER_PROFILE), VERR_INTERNAL_ERROR_3);
3315	#endif
3316
3317	Log(("vmsvga3dContextDefine id %x\n", cid));
3318
3319	if (cid == VMSVGA3D_SHARED_CTX_ID)
3320	pContext = &pState->SharedCtx;
3321	else
3322	{
3323	if (cid >= pState->cContexts)
3324	{
3325	/* Grow the array. */
3326	uint32_t cNew = RT_ALIGN(cid + 15, 16);
3327	void pvNew = RTMemRealloc(pState->papContexts, sizeof(pState->papContexts[0]) cNew);
3328	AssertReturn(pvNew, VERR_NO_MEMORY);
3329	pState->papContexts = (PVMSVGA3DCONTEXT *)pvNew;
3330	while (pState->cContexts < cNew)
3331	{
3332	pContext = (PVMSVGA3DCONTEXT)RTMemAllocZ(sizeof(*pContext));
3333	AssertReturn(pContext, VERR_NO_MEMORY);
3334	pContext->id = SVGA3D_INVALID_ID;
3335	pState->papContexts[pState->cContexts++] = pContext;
3336	}
3337	}
3338	/* If one already exists with this id, then destroy it now. */
3339	if (pState->papContexts[cid]->id != SVGA3D_INVALID_ID)
3340	vmsvga3dBackContextDestroy(pThisCC, cid);
3341
3342	pContext = pState->papContexts[cid];
3343	}
3344
3345	/*
3346	* Find or create the shared context if needed (necessary for sharing e.g. textures between contexts).
3347	*/
3348	PVMSVGA3DCONTEXT pSharedCtx = NULL;
3349	if (!(fFlags & (VMSVGA3D_DEF_CTX_F_INIT \| VMSVGA3D_DEF_CTX_F_SHARED_CTX)))
3350	{
3351	pSharedCtx = &pState->SharedCtx;
3352	if (pSharedCtx->id != VMSVGA3D_SHARED_CTX_ID)
3353	{
3354	rc = vmsvga3dContextDefineOgl(pThisCC, VMSVGA3D_SHARED_CTX_ID, VMSVGA3D_DEF_CTX_F_SHARED_CTX);
3355	AssertLogRelRCReturn(rc, rc);
3356
3357	/* Create resources which use the shared context. */
3358	vmsvga3dOnSharedContextDefine(pState);
3359	}
3360	}
3361
3362	/*
3363	* Initialize the context.
3364	*/
3365	memset(pContext, 0, sizeof(*pContext));
3366	pContext->id = cid;
3367	for (uint32_t i = 0; i < RT_ELEMENTS(pContext->aSidActiveTextures); i++)
3368	pContext->aSidActiveTextures[i] = SVGA3D_INVALID_ID;
3369
3370	pContext->state.shidVertex = SVGA3D_INVALID_ID;
3371	pContext->state.shidPixel = SVGA3D_INVALID_ID;
3372	pContext->idFramebuffer = OPENGL_INVALID_ID;
3373	pContext->idReadFramebuffer = OPENGL_INVALID_ID;
3374	pContext->idDrawFramebuffer = OPENGL_INVALID_ID;
3375
3376	rc = ShaderContextCreate(&pContext->pShaderContext);
3377	AssertRCReturn(rc, rc);
3378
3379	for (uint32_t i = 0; i < RT_ELEMENTS(pContext->state.aRenderTargets); i++)
3380	pContext->state.aRenderTargets[i] = SVGA3D_INVALID_ID;
3381
3382	#ifdef RT_OS_WINDOWS
3383	/* Create a context window with minimal 4x4 size. We will never use the swapchain
3384	* to present the rendered image. Rendered images from the guest will be copied to
3385	* the VMSVGA SCREEN object, which can be either an offscreen render target or
3386	* system memory in the guest VRAM.
3387	*/
3388	rc = vmsvga3dContextWindowCreate(pState->hInstance, pState->pWindowThread, pState->WndRequestSem, &pContext->hwnd);
3389	AssertRCReturn(rc, rc);
3390
3391	pContext->hdc = GetDC(pContext->hwnd);
3392	AssertMsgReturn(pContext->hdc, ("GetDC %x failed with %d\n", pContext->hwnd, GetLastError()), VERR_INTERNAL_ERROR);
3393
3394	PIXELFORMATDESCRIPTOR pfd = {
3395	sizeof(PIXELFORMATDESCRIPTOR), /* size of this pfd */
3396	1, /* version number */
3397	PFD_DRAW_TO_WINDOW \| /* support window */
3398	PFD_SUPPORT_OPENGL, /* support OpenGL */
3399	PFD_TYPE_RGBA, /* RGBA type */
3400	24, /* 24-bit color depth */
3401	0, 0, 0, 0, 0, 0, /* color bits ignored */
3402	8, /* alpha buffer */
3403	0, /* shift bit ignored */
3404	0, /* no accumulation buffer */
3405	0, 0, 0, 0, /* accum bits ignored */
3406	16, /* set depth buffer */
3407	16, /* set stencil buffer */
3408	0, /* no auxiliary buffer */
3409	PFD_MAIN_PLANE, /* main layer */
3410	0, /* reserved */
3411	0, 0, 0 /* layer masks ignored */
3412	};
3413	int pixelFormat;
3414	BOOL ret;
3415
3416	pixelFormat = ChoosePixelFormat(pContext->hdc, &pfd);
3417	/** @todo is this really necessary?? */
3418	pixelFormat = ChoosePixelFormat(pContext->hdc, &pfd);
3419	AssertMsgReturn(pixelFormat != 0, ("ChoosePixelFormat failed with %d\n", GetLastError()), VERR_INTERNAL_ERROR);
3420
3421	ret = SetPixelFormat(pContext->hdc, pixelFormat, &pfd);
3422	AssertMsgReturn(ret == TRUE, ("SetPixelFormat failed with %d\n", GetLastError()), VERR_INTERNAL_ERROR);
3423
3424	pContext->hglrc = wglCreateContext(pContext->hdc);
3425	AssertMsgReturn(pContext->hglrc, ("wglCreateContext %x failed with %d\n", pContext->hdc, GetLastError()), VERR_INTERNAL_ERROR);
3426
3427	if (pSharedCtx)
3428	{
3429	ret = wglShareLists(pSharedCtx->hglrc, pContext->hglrc);
3430	AssertMsg(ret == TRUE, ("wglShareLists(%p, %p) failed with %d\n", pSharedCtx->hglrc, pContext->hglrc, GetLastError()));
3431	}
3432
3433	#elif defined(RT_OS_DARWIN)
3434	pContext->fOtherProfile = RT_BOOL(fFlags & VMSVGA3D_DEF_CTX_F_OTHER_PROFILE);
3435
3436	NativeNSOpenGLContextRef pShareContext = pSharedCtx ? pSharedCtx->cocoaContext : NULL;
3437	vmsvga3dCocoaCreateViewAndContext(&pContext->cocoaView, &pContext->cocoaContext,
3438	NULL,
3439	4, 4,
3440	pShareContext, pContext->fOtherProfile);
3441
3442	#else
3443	if (pState->display == NULL)
3444	{
3445	/* get an X display and make sure we have glX 1.3 */
3446	pState->display = XOpenDisplay(0);
3447	AssertLogRelMsgReturn(pState->display, ("XOpenDisplay failed"), VERR_INTERNAL_ERROR);
3448	int glxMajor, glxMinor;
3449	Bool ret = glXQueryVersion(pState->display, &glxMajor, &glxMinor);
3450	AssertLogRelMsgReturn(ret && glxMajor == 1 && glxMinor >= 3, ("glX >=1.3 not present"), VERR_INTERNAL_ERROR);
3451	/* start our X event handling thread */
3452	rc = RTThreadCreate(&pState->pWindowThread, vmsvga3dXEventThread, pState, 0, RTTHREADTYPE_GUI, RTTHREADFLAGS_WAITABLE, "VMSVGA3DXEVENT");
3453	AssertLogRelMsgReturn(RT_SUCCESS(rc), ("Async IO Thread creation for 3d window handling failed rc=%Rrc\n", rc), rc);
3454	}
3455
3456	Window defaultRootWindow = XDefaultRootWindow(pState->display);
3457	/* Create a small 4x4 window required for GL context. */
3458	int attrib[] =
3459	{
3460	GLX_RGBA,
3461	GLX_RED_SIZE, 1,
3462	GLX_GREEN_SIZE, 1,
3463	GLX_BLUE_SIZE, 1,
3464	//GLX_ALPHA_SIZE, 1, this flips the bbos screen
3465	GLX_DOUBLEBUFFER,
3466	None
3467	};
3468	XVisualInfo *vi = glXChooseVisual(pState->display, DefaultScreen(pState->display), attrib);
3469	AssertLogRelMsgReturn(vi, ("glXChooseVisual failed"), VERR_INTERNAL_ERROR);
3470	XSetWindowAttributes swa;
3471	swa.colormap = XCreateColormap(pState->display, defaultRootWindow, vi->visual, AllocNone);
3472	AssertLogRelMsgReturn(swa.colormap, ("XCreateColormap failed"), VERR_INTERNAL_ERROR);
3473	swa.border_pixel = 0;
3474	swa.background_pixel = 0;
3475	swa.event_mask = StructureNotifyMask;
3476	unsigned long flags = CWBorderPixel \| CWBackPixel \| CWColormap \| CWEventMask;
3477	pContext->window = XCreateWindow(pState->display, defaultRootWindow,
3478	0, 0, 4, 4,
3479	0, vi->depth, InputOutput,
3480	vi->visual, flags, &swa);
3481	AssertLogRelMsgReturn(pContext->window, ("XCreateWindow failed"), VERR_INTERNAL_ERROR);
3482
3483	/* The window is hidden by default and never mapped, because we only render offscreen and never present to it. */
3484
3485	GLXContext shareContext = pSharedCtx ? pSharedCtx->glxContext : NULL;
3486	pContext->glxContext = glXCreateContext(pState->display, vi, shareContext, GL_TRUE);
3487	XFree(vi);
3488	AssertLogRelMsgReturn(pContext->glxContext, ("glXCreateContext failed"), VERR_INTERNAL_ERROR);
3489	#endif
3490
3491	VMSVGA3D_SET_CURRENT_CONTEXT(pState, pContext);
3492
3493	/* NULL during the first PowerOn call. */
3494	if (pState->ext.glGenFramebuffers)
3495	{
3496	/* Create a framebuffer object for this context. */
3497	pState->ext.glGenFramebuffers(1, &pContext->idFramebuffer);
3498	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
3499
3500	/* Bind the object to the framebuffer target. */
3501	pState->ext.glBindFramebuffer(GL_FRAMEBUFFER, pContext->idFramebuffer);
3502	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
3503
3504	/* Create read and draw framebuffer objects for this context. */
3505	pState->ext.glGenFramebuffers(1, &pContext->idReadFramebuffer);
3506	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
3507
3508	pState->ext.glGenFramebuffers(1, &pContext->idDrawFramebuffer);
3509	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
3510
3511	}
3512	#if 0
3513	/** @todo move to shader lib!!! */
3514	/* Clear the screen */
3515	VMSVGA3D_SET_CURRENT_CONTEXT(pState, pContext);
3516
3517	glClearColor(1.0f, 0.0f, 0.0f, 0.0f);
3518	glClearIndex(0);
3519	glClearDepth(1);
3520	glClearStencil(0xffff);
3521	glLightModeli(GL_LIGHT_MODEL_LOCAL_VIEWER, GL_TRUE);
3522	glTexEnvf(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_COMBINE_EXT);
3523	glLightModeli(GL_LIGHT_MODEL_COLOR_CONTROL, GL_SEPARATE_SPECULAR_COLOR);
3524	if (pState->ext.glProvokingVertex)
3525	pState->ext.glProvokingVertex(GL_FIRST_VERTEX_CONVENTION);
3526	/** @todo move to shader lib!!! */
3527	#endif
3528	return VINF_SUCCESS;
3529	}
3530
3531	#if defined(RT_OS_LINUX)
3532	/*
3533	* HW accelerated graphics output.
3534	*/
3535
3536	/**
3537	* VMSVGA3d screen data.
3538	*
3539	* Allocated on the heap and pointed to by VMSVGASCREENOBJECT::pHwScreen.
3540	*/
3541	typedef struct VMSVGAHWSCREEN
3542	{
3543	/* OpenGL context, which is used for the screen updates. */
3544	GLXContext glxctx;
3545
3546	/* The overlay window. */
3547	Window xwindow;
3548
3549	/* The RGBA texture which hold the screen content. */
3550	GLuint idScreenTexture;
3551
3552	/* Read and draw framebuffer objects for copying a surface to the screen texture. */
3553	GLuint idReadFramebuffer;
3554	GLuint idDrawFramebuffer;
3555	} VMSVGAHWSCREEN;
3556
3557	/* Send a notification to the UI. */
3558	#if 0 /* Unused */
3559	static int vmsvga3dDrvNotifyHwScreen(PVGASTATECC pThisCC, VBOX3D_NOTIFY_TYPE enmNotification,
3560	uint32_t idScreen, Pixmap pixmap, void *pvData, size_t cbData)
3561	{
3562	uint8_t au8Buffer[128];
3563	AssertLogRelMsgReturn(cbData <= sizeof(au8Buffer) - sizeof(VBOX3DNOTIFY),
3564	("cbData %zu", cbData),
3565	VERR_INVALID_PARAMETER);
3566
3567	VBOX3DNOTIFY p = (VBOX3DNOTIFY )&au8Buffer[0];
3568	p->enmNotification = enmNotification;
3569	p->iDisplay = idScreen;
3570	p->u32Reserved = 0;
3571	p->cbData = cbData + sizeof(uint64_t);
3572	/* au8Data consists of a 64 bit pixmap handle followed by notification specific data. */
3573	AssertCompile(sizeof(pixmap) <= sizeof(uint64_t));
3574	(uint64_t )&p->au8Data[0] = (uint64_t)pixmap;
3575	memcpy(&p->au8Data[sizeof(uint64_t)], pvData, cbData);
3576
3577	int rc = pThisCC->pDrv->pfn3DNotifyProcess(pThisCC->pDrv, p);
3578	return rc;
3579	}
3580	#endif /* Unused */
3581
3582	static void vmsvga3dDrvNotifyHwOverlay(PVGASTATECC pThisCC, VBOX3D_NOTIFY_TYPE enmNotification, uint32_t idScreen)
3583	{
3584	uint8_t au8Buffer[128];
3585	VBOX3DNOTIFY p = (VBOX3DNOTIFY )&au8Buffer[0];
3586	p->enmNotification = enmNotification;
3587	p->iDisplay = idScreen;
3588	p->u32Reserved = 0;
3589	p->cbData = sizeof(uint64_t);
3590	(uint64_t )&p->au8Data[0] = 0;
3591
3592	pThisCC->pDrv->pfn3DNotifyProcess(pThisCC->pDrv, p);
3593	}
3594
3595	/* Get X Window handle of the UI Framebuffer window. */
3596	static int vmsvga3dDrvQueryWindow(PVGASTATECC pThisCC, uint32_t idScreen, Window *pWindow)
3597	{
3598	uint8_t au8Buffer[128];
3599	VBOX3DNOTIFY p = (VBOX3DNOTIFY )&au8Buffer[0];
3600	p->enmNotification = VBOX3D_NOTIFY_TYPE_HW_OVERLAY_GET_ID;
3601	p->iDisplay = idScreen;
3602	p->u32Reserved = 0;
3603	p->cbData = sizeof(uint64_t);
3604	(uint64_t )&p->au8Data[0] = 0;
3605
3606	int rc = pThisCC->pDrv->pfn3DNotifyProcess(pThisCC->pDrv, p);
3607	if (RT_SUCCESS(rc))
3608	{
3609	pWindow = (Window)(uint64_t *)&p->au8Data[0];
3610	}
3611	return rc;
3612	}
3613
3614	static int ctxErrorHandler(Display dpy, XErrorEvent ev)
3615	{
3616	RT_NOREF(dpy);
3617	LogRel4(("VMSVGA: XError %d\n", (int)ev->error_code));
3618	return 0;
3619	}
3620
3621	/* Create an overlay X window for the HW accelerated screen. */
3622	static int vmsvga3dHwScreenCreate(PVMSVGA3DSTATE pState, Window parentWindow, unsigned int cWidth, unsigned int cHeight, VMSVGAHWSCREEN *p)
3623	{
3624	int (oldHandler)(Display, XErrorEvent*) = XSetErrorHandler(&ctxErrorHandler);
3625
3626	int rc = VINF_SUCCESS;
3627
3628	XWindowAttributes parentAttr;
3629	if (XGetWindowAttributes(pState->display, parentWindow, &parentAttr) == 0)
3630	return VERR_INVALID_PARAMETER;
3631
3632	int const idxParentScreen = XScreenNumberOfScreen(parentAttr.screen);
3633
3634	/*
3635	* Create a new GL context, which will be used for copying to the screen.
3636	*/
3637
3638	/* FBConfig attributes for the overlay window. */
3639	static int const aConfigAttribList[] =
3640	{
3641	GLX_DRAWABLE_TYPE, GLX_WINDOW_BIT, // Must support GLX windows
3642	GLX_DOUBLEBUFFER, False, // Double buffering had a much lower performance.
3643	GLX_RED_SIZE, 8, // True color RGB with 8 bits per channel.
3644	GLX_GREEN_SIZE, 8,
3645	GLX_BLUE_SIZE, 8,
3646	GLX_ALPHA_SIZE, 8,
3647	GLX_STENCIL_SIZE, 0, // No stencil buffer
3648	GLX_DEPTH_SIZE, 0, // No depth buffer
3649	None
3650	};
3651
3652	/* Find a suitable FB config. */
3653	int cConfigs = 0;
3654	GLXFBConfig *paConfigs = glXChooseFBConfig(pState->display, idxParentScreen, aConfigAttribList, &cConfigs);
3655	LogRel4(("VMSVGA: vmsvga3dHwScreenCreate: paConfigs %p cConfigs %d\n", (void *)paConfigs, cConfigs));
3656	if (paConfigs)
3657	{
3658	XVisualInfo *vi = NULL;
3659	int i = 0;
3660	for (; i < cConfigs; ++i)
3661	{
3662	/* Use XFree to free the data returned in the previous iteration of this loop. */
3663	if (vi)
3664	XFree(vi);
3665
3666	vi = glXGetVisualFromFBConfig(pState->display, paConfigs[i]);
3667	if (!vi)
3668	continue;
3669
3670	LogRel4(("VMSVGA: vmsvga3dHwScreenCreate: %p vid %lu screen %d depth %d r %lu g %lu b %lu clrmap %d bitsperrgb %d\n",
3671	(void *)vi->visual, vi->visualid, vi->screen, vi->depth,
3672	vi->red_mask, vi->green_mask, vi->blue_mask, vi->colormap_size, vi->bits_per_rgb));
3673
3674	/* Same screen as the parent window. */
3675	if (vi->screen != idxParentScreen)
3676	continue;
3677
3678	/* Search for 32 bits per pixel. */
3679	if (vi->depth != 32)
3680	continue;
3681
3682	/* 8 bits per color component is enough. */
3683	if (vi->bits_per_rgb != 8)
3684	continue;
3685
3686	/* Render to pixmap. */
3687	int value = 0;
3688	glXGetFBConfigAttrib(pState->display, paConfigs[i], GLX_DRAWABLE_TYPE, &value);
3689	if (!(value & GLX_WINDOW_BIT))
3690	continue;
3691
3692	/* This FB config can be used. */
3693	break;
3694	}
3695
3696	if (i < cConfigs)
3697	{
3698	/* Found a suitable config with index i. */
3699
3700	/* Create an overlay window. */
3701	XSetWindowAttributes swa;
3702	RT_ZERO(swa);
3703
3704	swa.colormap = XCreateColormap(pState->display, parentWindow, vi->visual, AllocNone);
3705	AssertLogRelMsg(swa.colormap, ("XCreateColormap failed"));
3706	swa.border_pixel = 0;
3707	swa.background_pixel = 0;
3708	swa.event_mask = StructureNotifyMask;
3709	swa.override_redirect = 1;
3710	unsigned long const swaAttrs = CWBorderPixel \| CWBackPixel \| CWColormap \| CWEventMask \| CWOverrideRedirect;
3711	p->xwindow = XCreateWindow(pState->display, parentWindow,
3712	0, 0, cWidth, cHeight, 0, vi->depth, InputOutput,
3713	vi->visual, swaAttrs, &swa);
3714	LogRel4(("VMSVGA: vmsvga3dHwScreenCreate: p->xwindow %ld\n", p->xwindow));
3715	if (p->xwindow)
3716	{
3717
3718	p->glxctx = glXCreateContext(pState->display, vi, pState->SharedCtx.glxContext, GL_TRUE);
3719	LogRel4(("VMSVGA: vmsvga3dHwScreenCreate: p->glxctx %p\n", (void *)p->glxctx));
3720	if (p->glxctx)
3721	{
3722	XMapWindow(pState->display, p->xwindow);
3723	}
3724	else
3725	{
3726	LogRel4(("VMSVGA: vmsvga3dHwScreenCreate: glXCreateContext failed\n"));
3727	rc = VERR_NOT_SUPPORTED;
3728	}
3729	}
3730	else
3731	{
3732	LogRel4(("VMSVGA: vmsvga3dHwScreenCreate: XCreateWindow failed\n"));
3733	rc = VERR_NOT_SUPPORTED;
3734	}
3735
3736	XSync(pState->display, False);
3737	}
3738	else
3739	{
3740	/* A suitable config is not found. */
3741	LogRel4(("VMSVGA: vmsvga3dHwScreenCreate: no FBConfig\n"));
3742	rc = VERR_NOT_SUPPORTED;
3743	}
3744
3745	if (vi)
3746	XFree(vi);
3747
3748	/* "Use XFree to free the memory returned by glXChooseFBConfig." */
3749	XFree(paConfigs);
3750	}
3751	else
3752	{
3753	/* glXChooseFBConfig failed. */
3754	rc = VERR_NOT_SUPPORTED;
3755	}
3756
3757	XSetErrorHandler(oldHandler);
3758	return rc;
3759	}
3760
3761	/* Destroy a HW accelerated screen. */
3762	static void vmsvga3dHwScreenDestroy(PVMSVGA3DSTATE pState, VMSVGAHWSCREEN *p)
3763	{
3764	if (p)
3765	{
3766	LogRel4(("VMSVGA: vmsvga3dHwScreenDestroy: p->xwindow %ld, ctx %p\n", p->xwindow, (void *)p->glxctx));
3767	if (p->glxctx)
3768	{
3769	/* GLX context is changed here, so other code has to set the appropriate context again. */
3770	VMSVGA3D_CLEAR_CURRENT_CONTEXT(pState);
3771
3772	glXMakeCurrent(pState->display, p->xwindow, p->glxctx);
3773
3774	/* Clean up OpenGL. */
3775	if (p->idReadFramebuffer != OPENGL_INVALID_ID)
3776	pState->ext.glDeleteFramebuffers(1, &p->idReadFramebuffer);
3777	if (p->idDrawFramebuffer != OPENGL_INVALID_ID)
3778	pState->ext.glDeleteFramebuffers(1, &p->idDrawFramebuffer);
3779	if (p->idScreenTexture != OPENGL_INVALID_ID)
3780	glDeleteTextures(1, &p->idScreenTexture);
3781
3782	glXMakeCurrent(pState->display, None, NULL);
3783
3784	glXDestroyContext(pState->display, p->glxctx);
3785	}
3786
3787	if (p->xwindow)
3788	XDestroyWindow(pState->display, p->xwindow);
3789
3790	RT_ZERO(*p);
3791	}
3792	}
3793
3794	#define GLCHECK() \
3795	do { \
3796	int glErr = glGetError(); \
3797	if (glErr != GL_NO_ERROR) LogRel4(("VMSVGA: GL error 0x%x @%d\n", glErr, __LINE__)); \
3798	} while(0)
3799
3800	static DECLCALLBACK(int) vmsvga3dBackDefineScreen(PVGASTATE pThis, PVGASTATECC pThisCC, VMSVGASCREENOBJECT *pScreen)
3801	{
3802	LogRel4(("VMSVGA: vmsvga3dBackDefineScreen: screen %u\n", pScreen->idScreen));
3803
3804	PVMSVGA3DSTATE pState = pThisCC->svga.p3dState;
3805	AssertReturn(pState, VERR_NOT_SUPPORTED);
3806
3807	if (!pThis->svga.f3DOverlayEnabled)
3808	return VERR_NOT_SUPPORTED;
3809
3810	Assert(pScreen->pHwScreen == NULL);
3811
3812	VMSVGAHWSCREEN p = (VMSVGAHWSCREEN )RTMemAllocZ(sizeof(VMSVGAHWSCREEN));
3813	AssertPtrReturn(p, VERR_NO_MEMORY);
3814
3815	/* Query the parent window ID from the UI framebuffer.
3816	* If it is there then
3817	* the device will create a texture for the screen content and an overlay window to present the screen content.
3818	* otherwise
3819	* the device will use the guest VRAM system memory for the screen content.
3820	*/
3821	Window parentWindow;
3822	int rc = vmsvga3dDrvQueryWindow(pThisCC, pScreen->idScreen, &parentWindow);
3823	if (RT_SUCCESS(rc))
3824	{
3825	/* Create the hardware accelerated screen. */
3826	rc = vmsvga3dHwScreenCreate(pState, parentWindow, pScreen->cWidth, pScreen->cHeight, p);
3827	if (RT_SUCCESS(rc))
3828	{
3829	/*
3830	* Setup the OpenGL context of the screen. The context will be used to draw on the screen.
3831	*/
3832
3833	/* GLX context is changed here, so other code has to set the appropriate context again. */
3834	VMSVGA3D_CLEAR_CURRENT_CONTEXT(pState);
3835
3836	Bool const fSuccess = glXMakeCurrent(pState->display, p->xwindow, p->glxctx);
3837	if (fSuccess)
3838	{
3839	/* Set GL state. */
3840	glClearColor(0, 0, 0, 1);
3841	glEnable(GL_TEXTURE_2D);
3842	glDisable(GL_DEPTH_TEST);
3843	glDisable(GL_CULL_FACE);
3844
3845	/* The RGBA texture which hold the screen content. */
3846	glGenTextures(1, &p->idScreenTexture); GLCHECK();
3847	glBindTexture(GL_TEXTURE_2D, p->idScreenTexture); GLCHECK();
3848	glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST); GLCHECK();
3849	glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST); GLCHECK();
3850	glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB8, pScreen->cWidth, pScreen->cHeight, 0,
3851	GL_BGRA, GL_UNSIGNED_INT_8_8_8_8_REV, NULL); GLCHECK();
3852
3853	/* Create read and draw framebuffer objects for this screen. */
3854	pState->ext.glGenFramebuffers(1, &p->idReadFramebuffer); GLCHECK();
3855	pState->ext.glGenFramebuffers(1, &p->idDrawFramebuffer); GLCHECK();
3856
3857	/* Work in screen coordinates. */
3858	glMatrixMode(GL_MODELVIEW);
3859	glLoadIdentity();
3860	glOrtho(0, pScreen->cWidth, 0, pScreen->cHeight, -1, 1);
3861	glMatrixMode(GL_PROJECTION);
3862	glLoadIdentity();
3863
3864	/* Clear the texture. */
3865	pState->ext.glBindFramebuffer(GL_DRAW_FRAMEBUFFER, p->idDrawFramebuffer); GLCHECK();
3866	pState->ext.glFramebufferTexture2D(GL_DRAW_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_TEXTURE_2D,
3867	p->idScreenTexture, 0); GLCHECK();
3868
3869	glClear(GL_COLOR_BUFFER_BIT);
3870
3871	pState->ext.glBindFramebuffer(GL_DRAW_FRAMEBUFFER, 0); GLCHECK();
3872
3873	glXMakeCurrent(pState->display, None, NULL);
3874
3875	XSync(pState->display, False);
3876
3877	vmsvga3dDrvNotifyHwOverlay(pThisCC, VBOX3D_NOTIFY_TYPE_HW_OVERLAY_CREATED, pScreen->idScreen);
3878	}
3879	else
3880	{
3881	LogRel4(("VMSVGA: vmsvga3dBackDefineScreen: failed to set current context\n"));
3882	rc = VERR_NOT_SUPPORTED;
3883	}
3884	}
3885	}
3886	else
3887	{
3888	LogRel4(("VMSVGA: vmsvga3dBackDefineScreen: no framebuffer\n"));
3889	}
3890
3891	if (RT_SUCCESS(rc))
3892	{
3893	LogRel(("VMSVGA: Using HW accelerated screen %u\n", pScreen->idScreen));
3894	pScreen->pHwScreen = p;
3895	}
3896	else
3897	{
3898	LogRel4(("VMSVGA: vmsvga3dBackDefineScreen: %Rrc\n", rc));
3899	vmsvga3dHwScreenDestroy(pState, p);
3900	RTMemFree(p);
3901	}
3902
3903	return rc;
3904	}
3905
3906	static DECLCALLBACK(int) vmsvga3dBackDestroyScreen(PVGASTATECC pThisCC, VMSVGASCREENOBJECT *pScreen)
3907	{
3908	LogRel4(("VMSVGA: vmsvga3dBackDestroyScreen: screen %u\n", pScreen->idScreen));
3909
3910	PVMSVGA3DSTATE pState = pThisCC->svga.p3dState;
3911	AssertReturn(pState, VERR_NOT_SUPPORTED);
3912
3913	int (oldHandler)(Display, XErrorEvent*) = XSetErrorHandler(&ctxErrorHandler);
3914
3915	VMSVGAHWSCREEN *p = pScreen->pHwScreen;
3916	if (p)
3917	{
3918	pScreen->pHwScreen = NULL;
3919
3920	vmsvga3dDrvNotifyHwOverlay(pThisCC, VBOX3D_NOTIFY_TYPE_HW_OVERLAY_DESTROYED, pScreen->idScreen);
3921
3922	vmsvga3dHwScreenDestroy(pState, p);
3923	RTMemFree(p);
3924	}
3925
3926	XSetErrorHandler(oldHandler);
3927
3928	return VINF_SUCCESS;
3929	}
3930
3931	/* Blit a surface to the GLX pixmap. */
3932	static DECLCALLBACK(int) vmsvga3dBackSurfaceBlitToScreen(PVGASTATECC pThisCC, VMSVGASCREENOBJECT *pScreen,
3933	SVGASignedRect destRect, SVGA3dSurfaceImageId srcImage,
3934	SVGASignedRect srcRect, uint32_t cRects, SVGASignedRect *paRects)
3935	{
3936	PVMSVGA3DSTATE pState = pThisCC->svga.p3dState;
3937	AssertReturn(pState, VERR_NOT_SUPPORTED);
3938
3939	VMSVGAHWSCREEN *p = pScreen->pHwScreen;
3940	AssertReturn(p, VERR_NOT_SUPPORTED);
3941
3942	PVMSVGA3DSURFACE pSurface;
3943	int rc = vmsvga3dSurfaceFromSid(pState, srcImage.sid, &pSurface);
3944	AssertRCReturn(rc, rc);
3945
3946	if (!VMSVGA3DSURFACE_HAS_HW_SURFACE(pSurface))
3947	{
3948	LogFunc(("src sid=%u flags=0x%x format=%d -> create texture\n", srcImage.sid, pSurface->f.s.surface1Flags, pSurface->format));
3949	rc = vmsvga3dBackCreateTexture(pThisCC, &pState->SharedCtx, VMSVGA3D_SHARED_CTX_ID, pSurface);
3950	AssertRCReturn(rc, rc);
3951	}
3952
3953	AssertReturn(pSurface->enmOGLResType == VMSVGA3D_OGLRESTYPE_TEXTURE, VERR_NOT_SUPPORTED);
3954
3955	PVMSVGA3DMIPMAPLEVEL pMipLevel;
3956	rc = vmsvga3dMipmapLevel(pSurface, srcImage.face, srcImage.mipmap, &pMipLevel);
3957	AssertRCReturn(rc, rc);
3958
3959	/** @todo Implement. */
3960	RT_NOREF(cRects, paRects);
3961
3962	/* GLX context is changed here, so other code has to set appropriate context again. */
3963	VMSVGA3D_CLEAR_CURRENT_CONTEXT(pState);
3964
3965	int (oldHandler)(Display, XErrorEvent*) = XSetErrorHandler(&ctxErrorHandler);
3966
3967	Bool fSuccess = glXMakeCurrent(pState->display, p->xwindow, p->glxctx);
3968	if (fSuccess)
3969	{
3970	/* Activate the read and draw framebuffer objects. */
3971	pState->ext.glBindFramebuffer(GL_READ_FRAMEBUFFER, p->idReadFramebuffer); GLCHECK();
3972	pState->ext.glBindFramebuffer(GL_DRAW_FRAMEBUFFER, p->idDrawFramebuffer); GLCHECK();
3973
3974	/* Bind the source and destination objects to the right place. */
3975	pState->ext.glFramebufferTexture2D(GL_READ_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_TEXTURE_2D,
3976	pSurface->oglId.texture, 0); GLCHECK();
3977	pState->ext.glFramebufferTexture2D(GL_DRAW_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_TEXTURE_2D,
3978	p->idScreenTexture, 0); GLCHECK();
3979
3980	pState->ext.glBlitFramebuffer(srcRect.left,
3981	srcRect.top,
3982	srcRect.right,
3983	srcRect.bottom,
3984	destRect.left,
3985	destRect.top,
3986	destRect.right,
3987	destRect.bottom,
3988	GL_COLOR_BUFFER_BIT,
3989	GL_NEAREST); GLCHECK();
3990
3991	/* Reset the frame buffer association */
3992	pState->ext.glBindFramebuffer(GL_FRAMEBUFFER, 0); GLCHECK();
3993
3994	/* Update the overlay window. */
3995	glClear(GL_COLOR_BUFFER_BIT);
3996
3997	glBindTexture(GL_TEXTURE_2D, p->idScreenTexture); GLCHECK();
3998
3999	GLint const w = pScreen->cWidth;
4000	GLint const h = pScreen->cHeight;
4001
4002	glBegin(GL_QUADS);
4003	glTexCoord2f(0.0f, 0.0f); glVertex2i(0, h);
4004	glTexCoord2f(0.0f, 1.0f); glVertex2i(0, 0);
4005	glTexCoord2f(1.0f, 1.0f); glVertex2i(w, 0);
4006	glTexCoord2f(1.0f, 0.0f); glVertex2i(w, h);
4007	glEnd(); GLCHECK();
4008
4009	glBindTexture(GL_TEXTURE_2D, 0); GLCHECK();
4010
4011	glXMakeCurrent(pState->display, None, NULL);
4012	}
4013	else
4014	{
4015	LogRel4(("VMSVGA: vmsvga3dBackSurfaceBlitToScreen: screen %u, glXMakeCurrent for pixmap failed\n", pScreen->idScreen));
4016	}
4017
4018	XSetErrorHandler(oldHandler);
4019
4020	return VINF_SUCCESS;
4021	}
4022
4023	#else /* !RT_OS_LINUX */
4024
4025	static DECLCALLBACK(int) vmsvga3dBackDefineScreen(PVGASTATE pThis, PVGASTATECC pThisCC, VMSVGASCREENOBJECT *pScreen)
4026	{
4027	RT_NOREF(pThis, pThisCC, pScreen);
4028	return VERR_NOT_IMPLEMENTED;
4029	}
4030
4031	static DECLCALLBACK(int) vmsvga3dBackDestroyScreen(PVGASTATECC pThisCC, VMSVGASCREENOBJECT *pScreen)
4032	{
4033	RT_NOREF(pThisCC, pScreen);
4034	return VERR_NOT_IMPLEMENTED;
4035	}
4036
4037	static DECLCALLBACK(int) vmsvga3dBackSurfaceBlitToScreen(PVGASTATECC pThisCC, VMSVGASCREENOBJECT *pScreen,
4038	SVGASignedRect destRect, SVGA3dSurfaceImageId srcImage,
4039	SVGASignedRect srcRect, uint32_t cRects, SVGASignedRect *paRects)
4040	{
4041	RT_NOREF(pThisCC, pScreen, destRect, srcImage, srcRect, cRects, paRects);
4042	return VERR_NOT_IMPLEMENTED;
4043	}
4044	#endif
4045
4046	/**
4047	* Create a new 3d context
4048	*
4049	* @returns VBox status code.
4050	* @param pThisCC The VGA/VMSVGA state for ring-3.
4051	* @param cid Context id
4052	*/
4053	static DECLCALLBACK(int) vmsvga3dBackContextDefine(PVGASTATECC pThisCC, uint32_t cid)
4054	{
4055	return vmsvga3dContextDefineOgl(pThisCC, cid, 0/fFlags/);
4056	}
4057
4058	/**
4059	* Destroys a 3d context.
4060	*
4061	* @returns VBox status code.
4062	* @param pThisCC The VGA/VMSVGA state for ring-3.
4063	* @param pContext The context to destroy.
4064	* @param cid Context id
4065	*/
4066	static int vmsvga3dContextDestroyOgl(PVGASTATECC pThisCC, PVMSVGA3DCONTEXT pContext, uint32_t cid)
4067	{
4068	PVMSVGA3DSTATE pState = pThisCC->svga.p3dState;
4069	AssertReturn(pState, VERR_NO_MEMORY);
4070	AssertReturn(pContext, VERR_INVALID_PARAMETER);
4071	AssertReturn(pContext->id == cid, VERR_INVALID_PARAMETER);
4072	Log(("vmsvga3dContextDestroyOgl id %x\n", cid));
4073
4074	VMSVGA3D_SET_CURRENT_CONTEXT(pState, pContext);
4075
4076	if (pContext->id == VMSVGA3D_SHARED_CTX_ID)
4077	{
4078	/* Delete resources which use the shared context. */
4079	vmsvga3dOnSharedContextDestroy(pState);
4080	}
4081
4082	/* Destroy all leftover pixel shaders. */
4083	for (uint32_t i = 0; i < pContext->cPixelShaders; i++)
4084	{
4085	if (pContext->paPixelShader[i].id != SVGA3D_INVALID_ID)
4086	vmsvga3dBackShaderDestroy(pThisCC, pContext->paPixelShader[i].cid, pContext->paPixelShader[i].id, pContext->paPixelShader[i].type);
4087	}
4088	if (pContext->paPixelShader)
4089	RTMemFree(pContext->paPixelShader);
4090
4091	/* Destroy all leftover vertex shaders. */
4092	for (uint32_t i = 0; i < pContext->cVertexShaders; i++)
4093	{
4094	if (pContext->paVertexShader[i].id != SVGA3D_INVALID_ID)
4095	vmsvga3dBackShaderDestroy(pThisCC, pContext->paVertexShader[i].cid, pContext->paVertexShader[i].id, pContext->paVertexShader[i].type);
4096	}
4097	if (pContext->paVertexShader)
4098	RTMemFree(pContext->paVertexShader);
4099
4100	if (pContext->state.paVertexShaderConst)
4101	RTMemFree(pContext->state.paVertexShaderConst);
4102	if (pContext->state.paPixelShaderConst)
4103	RTMemFree(pContext->state.paPixelShaderConst);
4104
4105	if (pContext->pShaderContext)
4106	{
4107	int rc = ShaderContextDestroy(pContext->pShaderContext);
4108	AssertRC(rc);
4109	}
4110
4111	if (pContext->idFramebuffer != OPENGL_INVALID_ID)
4112	{
4113	/* Unbind the object from the framebuffer target. */
4114	pState->ext.glBindFramebuffer(GL_FRAMEBUFFER, 0 /* back buffer */);
4115	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
4116	pState->ext.glDeleteFramebuffers(1, &pContext->idFramebuffer);
4117	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
4118
4119	if (pContext->idReadFramebuffer != OPENGL_INVALID_ID)
4120	{
4121	pState->ext.glDeleteFramebuffers(1, &pContext->idReadFramebuffer);
4122	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
4123	}
4124	if (pContext->idDrawFramebuffer != OPENGL_INVALID_ID)
4125	{
4126	pState->ext.glDeleteFramebuffers(1, &pContext->idDrawFramebuffer);
4127	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
4128	}
4129	}
4130
4131	vmsvga3dBackOcclusionQueryDelete(pThisCC, pContext);
4132
4133	#ifdef RT_OS_WINDOWS
4134	wglMakeCurrent(pContext->hdc, NULL);
4135	wglDeleteContext(pContext->hglrc);
4136	ReleaseDC(pContext->hwnd, pContext->hdc);
4137
4138	/* Destroy the window we've created. */
4139	int rc = vmsvga3dSendThreadMessage(pState->pWindowThread, pState->WndRequestSem, WM_VMSVGA3D_DESTROYWINDOW, (WPARAM)pContext->hwnd, 0);
4140	AssertRC(rc);
4141	#elif defined(RT_OS_DARWIN)
4142	vmsvga3dCocoaDestroyViewAndContext(pContext->cocoaView, pContext->cocoaContext);
4143	#elif defined(RT_OS_LINUX)
4144	glXMakeCurrent(pState->display, None, NULL);
4145	glXDestroyContext(pState->display, pContext->glxContext);
4146	XDestroyWindow(pState->display, pContext->window);
4147	#endif
4148
4149	memset(pContext, 0, sizeof(*pContext));
4150	pContext->id = SVGA3D_INVALID_ID;
4151
4152	VMSVGA3D_CLEAR_CURRENT_CONTEXT(pState);
4153	return VINF_SUCCESS;
4154	}
4155
4156	/**
4157	* Destroy an existing 3d context
4158	*
4159	* @returns VBox status code.
4160	* @param pThisCC The VGA/VMSVGA state for ring-3.
4161	* @param cid Context id
4162	*/
4163	static DECLCALLBACK(int) vmsvga3dBackContextDestroy(PVGASTATECC pThisCC, uint32_t cid)
4164	{
4165	PVMSVGA3DSTATE pState = pThisCC->svga.p3dState;
4166	AssertReturn(pState, VERR_WRONG_ORDER);
4167
4168	/*
4169	* Resolve the context and hand it to the common worker function.
4170	*/
4171	if ( cid < pState->cContexts
4172	&& pState->papContexts[cid]->id == cid)
4173	return vmsvga3dContextDestroyOgl(pThisCC, pState->papContexts[cid], cid);
4174
4175	AssertReturn(cid < SVGA3D_MAX_CONTEXT_IDS, VERR_INVALID_PARAMETER);
4176	return VINF_SUCCESS;
4177	}
4178
4179	/**
4180	* Worker for vmsvga3dBackChangeMode that resizes a context.
4181	*
4182	* @param pState The VMSVGA3d state.
4183	* @param pContext The context.
4184	*/
4185	static void vmsvga3dChangeModeOneContext(PVMSVGA3DSTATE pState, PVMSVGA3DCONTEXT pContext)
4186	{
4187	RT_NOREF(pState, pContext);
4188	/* Do nothing. The window is not used for presenting. */
4189	}
4190
4191	/* Handle resize */
4192	static DECLCALLBACK(int) vmsvga3dBackChangeMode(PVGASTATECC pThisCC)
4193	{
4194	PVMSVGA3DSTATE pState = pThisCC->svga.p3dState;
4195	AssertReturn(pState, VERR_NO_MEMORY);
4196
4197	/* Resize the shared context too. */
4198	if (pState->SharedCtx.id == VMSVGA3D_SHARED_CTX_ID)
4199	vmsvga3dChangeModeOneContext(pState, &pState->SharedCtx);
4200
4201	/* Resize all active contexts. */
4202	for (uint32_t i = 0; i < pState->cContexts; i++)
4203	{
4204	PVMSVGA3DCONTEXT pContext = pState->papContexts[i];
4205	if (pContext->id != SVGA3D_INVALID_ID)
4206	vmsvga3dChangeModeOneContext(pState, pContext);
4207	}
4208
4209	return VINF_SUCCESS;
4210	}
4211
4212
4213	static DECLCALLBACK(int) vmsvga3dBackSetTransform(PVGASTATECC pThisCC, uint32_t cid, SVGA3dTransformType type, float matrix[16])
4214	{
4215	PVMSVGA3DSTATE pState = pThisCC->svga.p3dState;
4216	AssertReturn(pState, VERR_NO_MEMORY);
4217	bool fModelViewChanged = false;
4218
4219	Log(("vmsvga3dSetTransform cid=%u %s\n", cid, vmsvgaTransformToString(type)));
4220
4221	ASSERT_GUEST_RETURN((unsigned)type < SVGA3D_TRANSFORM_MAX, VERR_INVALID_PARAMETER);
4222
4223	PVMSVGA3DCONTEXT pContext;
4224	int rc = vmsvga3dContextFromCid(pState, cid, &pContext);
4225	AssertRCReturn(rc, rc);
4226
4227	VMSVGA3D_SET_CURRENT_CONTEXT(pState, pContext);
4228
4229	/* Save this matrix for vm state save/restore. */
4230	pContext->state.aTransformState[type].fValid = true;
4231	memcpy(pContext->state.aTransformState[type].matrix, matrix, sizeof(pContext->state.aTransformState[type].matrix));
4232	pContext->state.u32UpdateFlags \|= VMSVGA3D_UPDATE_TRANSFORM;
4233
4234	Log(("Matrix [%d %d %d %d]\n", (int)(matrix[0] * 10.0), (int)(matrix[1] * 10.0), (int)(matrix[2] * 10.0), (int)(matrix[3] * 10.0)));
4235	Log((" [%d %d %d %d]\n", (int)(matrix[4] * 10.0), (int)(matrix[5] * 10.0), (int)(matrix[6] * 10.0), (int)(matrix[7] * 10.0)));
4236	Log((" [%d %d %d %d]\n", (int)(matrix[8] * 10.0), (int)(matrix[9] * 10.0), (int)(matrix[10] * 10.0), (int)(matrix[11] * 10.0)));
4237	Log((" [%d %d %d %d]\n", (int)(matrix[12] * 10.0), (int)(matrix[13] * 10.0), (int)(matrix[14] * 10.0), (int)(matrix[15] * 10.0)));
4238
4239	switch (type)
4240	{
4241	case SVGA3D_TRANSFORM_VIEW:
4242	/* View * World = Model View */
4243	glMatrixMode(GL_MODELVIEW);
4244	glLoadMatrixf(matrix);
4245	if (pContext->state.aTransformState[SVGA3D_TRANSFORM_WORLD].fValid)
4246	glMultMatrixf(pContext->state.aTransformState[SVGA3D_TRANSFORM_WORLD].matrix);
4247	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
4248	fModelViewChanged = true;
4249	break;
4250
4251	case SVGA3D_TRANSFORM_PROJECTION:
4252	{
4253	rc = ShaderTransformProjection(pContext->state.RectViewPort.w, pContext->state.RectViewPort.h, matrix, false /* fPretransformed */);
4254	AssertRCReturn(rc, rc);
4255	break;
4256	}
4257
4258	case SVGA3D_TRANSFORM_TEXTURE0:
4259	glMatrixMode(GL_TEXTURE);
4260	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
4261	glLoadMatrixf(matrix);
4262	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
4263	break;
4264
4265	case SVGA3D_TRANSFORM_TEXTURE1:
4266	case SVGA3D_TRANSFORM_TEXTURE2:
4267	case SVGA3D_TRANSFORM_TEXTURE3:
4268	case SVGA3D_TRANSFORM_TEXTURE4:
4269	case SVGA3D_TRANSFORM_TEXTURE5:
4270	case SVGA3D_TRANSFORM_TEXTURE6:
4271	case SVGA3D_TRANSFORM_TEXTURE7:
4272	Log(("vmsvga3dSetTransform: unsupported SVGA3D_TRANSFORM_TEXTUREx transform!!\n"));
4273	return VERR_INVALID_PARAMETER;
4274
4275	case SVGA3D_TRANSFORM_WORLD:
4276	/* View * World = Model View */
4277	glMatrixMode(GL_MODELVIEW);
4278	if (pContext->state.aTransformState[SVGA3D_TRANSFORM_VIEW].fValid)
4279	glLoadMatrixf(pContext->state.aTransformState[SVGA3D_TRANSFORM_VIEW].matrix);
4280	else
4281	glLoadIdentity();
4282	glMultMatrixf(matrix);
4283	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
4284	fModelViewChanged = true;
4285	break;
4286
4287	case SVGA3D_TRANSFORM_WORLD1:
4288	case SVGA3D_TRANSFORM_WORLD2:
4289	case SVGA3D_TRANSFORM_WORLD3:
4290	Log(("vmsvga3dSetTransform: unsupported SVGA3D_TRANSFORM_WORLDx transform!!\n"));
4291	return VERR_INVALID_PARAMETER;
4292
4293	default:
4294	Log(("vmsvga3dSetTransform: unknown type!!\n"));
4295	return VERR_INVALID_PARAMETER;
4296	}
4297
4298	/* Apparently we need to reset the light and clip data after modifying the modelview matrix. */
4299	if (fModelViewChanged)
4300	{
4301	/* Reprogram the clip planes. */
4302	for (uint32_t j = 0; j < RT_ELEMENTS(pContext->state.aClipPlane); j++)
4303	{
4304	if (pContext->state.aClipPlane[j].fValid == true)
4305	vmsvga3dBackSetClipPlane(pThisCC, cid, j, pContext->state.aClipPlane[j].plane);
4306	}
4307
4308	/* Reprogram the light data. */
4309	for (uint32_t j = 0; j < RT_ELEMENTS(pContext->state.aLightData); j++)
4310	{
4311	if (pContext->state.aLightData[j].fValidData == true)
4312	vmsvga3dBackSetLightData(pThisCC, cid, j, &pContext->state.aLightData[j].data);
4313	}
4314	}
4315
4316	return VINF_SUCCESS;
4317	}
4318
4319	static DECLCALLBACK(int) vmsvga3dBackSetZRange(PVGASTATECC pThisCC, uint32_t cid, SVGA3dZRange zRange)
4320	{
4321	PVMSVGA3DSTATE pState = pThisCC->svga.p3dState;
4322	AssertReturn(pState, VERR_NO_MEMORY);
4323
4324	Log(("vmsvga3dSetZRange cid=%u min=%d max=%d\n", cid, (uint32_t)(zRange.min * 100.0), (uint32_t)(zRange.max * 100.0)));
4325
4326	PVMSVGA3DCONTEXT pContext;
4327	int rc = vmsvga3dContextFromCid(pState, cid, &pContext);
4328	AssertRCReturn(rc, rc);
4329
4330	VMSVGA3D_SET_CURRENT_CONTEXT(pState, pContext);
4331
4332	pContext->state.zRange = zRange;
4333	pContext->state.u32UpdateFlags \|= VMSVGA3D_UPDATE_ZRANGE;
4334
4335	if (zRange.min < -1.0)
4336	zRange.min = -1.0;
4337	if (zRange.max > 1.0)
4338	zRange.max = 1.0;
4339
4340	glDepthRange((GLdouble)zRange.min, (GLdouble)zRange.max);
4341	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
4342	return VINF_SUCCESS;
4343	}
4344
4345	/**
4346	* Convert SVGA blend op value to its OpenGL equivalent
4347	*/
4348	static GLenum vmsvga3dBlendOp2GL(uint32_t blendOp)
4349	{
4350	switch (blendOp)
4351	{
4352	case SVGA3D_BLENDOP_ZERO:
4353	return GL_ZERO;
4354	case SVGA3D_BLENDOP_ONE:
4355	return GL_ONE;
4356	case SVGA3D_BLENDOP_SRCCOLOR:
4357	return GL_SRC_COLOR;
4358	case SVGA3D_BLENDOP_INVSRCCOLOR:
4359	return GL_ONE_MINUS_SRC_COLOR;
4360	case SVGA3D_BLENDOP_SRCALPHA:
4361	return GL_SRC_ALPHA;
4362	case SVGA3D_BLENDOP_INVSRCALPHA:
4363	return GL_ONE_MINUS_SRC_ALPHA;
4364	case SVGA3D_BLENDOP_DESTALPHA:
4365	return GL_DST_ALPHA;
4366	case SVGA3D_BLENDOP_INVDESTALPHA:
4367	return GL_ONE_MINUS_DST_ALPHA;
4368	case SVGA3D_BLENDOP_DESTCOLOR:
4369	return GL_DST_COLOR;
4370	case SVGA3D_BLENDOP_INVDESTCOLOR:
4371	return GL_ONE_MINUS_DST_COLOR;
4372	case SVGA3D_BLENDOP_SRCALPHASAT:
4373	return GL_SRC_ALPHA_SATURATE;
4374	case SVGA3D_BLENDOP_BLENDFACTOR:
4375	return GL_CONSTANT_COLOR;
4376	case SVGA3D_BLENDOP_INVBLENDFACTOR:
4377	return GL_ONE_MINUS_CONSTANT_COLOR;
4378	default:
4379	AssertFailed();
4380	return GL_ONE;
4381	}
4382	}
4383
4384	static GLenum vmsvga3dBlendEquation2GL(uint32_t blendEq)
4385	{
4386	switch (blendEq)
4387	{
4388	case SVGA3D_BLENDEQ_ADD:
4389	return GL_FUNC_ADD;
4390	case SVGA3D_BLENDEQ_SUBTRACT:
4391	return GL_FUNC_SUBTRACT;
4392	case SVGA3D_BLENDEQ_REVSUBTRACT:
4393	return GL_FUNC_REVERSE_SUBTRACT;
4394	case SVGA3D_BLENDEQ_MINIMUM:
4395	return GL_MIN;
4396	case SVGA3D_BLENDEQ_MAXIMUM:
4397	return GL_MAX;
4398	default:
4399	/* SVGA3D_BLENDEQ_INVALID means that the render state has not been set, therefore use default. */
4400	AssertMsg(blendEq == SVGA3D_BLENDEQ_INVALID, ("blendEq=%d (%#x)\n", blendEq, blendEq));
4401	return GL_FUNC_ADD;
4402	}
4403	}
4404
4405	static GLenum vmsvgaCmpFunc2GL(uint32_t cmpFunc)
4406	{
4407	switch (cmpFunc)
4408	{
4409	case SVGA3D_CMP_NEVER:
4410	return GL_NEVER;
4411	case SVGA3D_CMP_LESS:
4412	return GL_LESS;
4413	case SVGA3D_CMP_EQUAL:
4414	return GL_EQUAL;
4415	case SVGA3D_CMP_LESSEQUAL:
4416	return GL_LEQUAL;
4417	case SVGA3D_CMP_GREATER:
4418	return GL_GREATER;
4419	case SVGA3D_CMP_NOTEQUAL:
4420	return GL_NOTEQUAL;
4421	case SVGA3D_CMP_GREATEREQUAL:
4422	return GL_GEQUAL;
4423	case SVGA3D_CMP_ALWAYS:
4424	return GL_ALWAYS;
4425	default:
4426	Assert(cmpFunc == SVGA3D_CMP_INVALID);
4427	return GL_LESS;
4428	}
4429	}
4430
4431	static GLenum vmsvgaStencipOp2GL(uint32_t stencilOp)
4432	{
4433	switch (stencilOp)
4434	{
4435	case SVGA3D_STENCILOP_KEEP:
4436	return GL_KEEP;
4437	case SVGA3D_STENCILOP_ZERO:
4438	return GL_ZERO;
4439	case SVGA3D_STENCILOP_REPLACE:
4440	return GL_REPLACE;
4441	case SVGA3D_STENCILOP_INCRSAT:
4442	return GL_INCR_WRAP;
4443	case SVGA3D_STENCILOP_DECRSAT:
4444	return GL_DECR_WRAP;
4445	case SVGA3D_STENCILOP_INVERT:
4446	return GL_INVERT;
4447	case SVGA3D_STENCILOP_INCR:
4448	return GL_INCR;
4449	case SVGA3D_STENCILOP_DECR:
4450	return GL_DECR;
4451	default:
4452	Assert(stencilOp == SVGA3D_STENCILOP_INVALID);
4453	return GL_KEEP;
4454	}
4455	}
4456
4457	static DECLCALLBACK(int) vmsvga3dBackSetRenderState(PVGASTATECC pThisCC, uint32_t cid, uint32_t cRenderStates, SVGA3dRenderState *pRenderState)
4458	{
4459	uint32_t val = UINT32_MAX; /* Shut up MSC. */
4460	PVMSVGA3DSTATE pState = pThisCC->svga.p3dState;
4461	AssertReturn(pState, VERR_NO_MEMORY);
4462
4463	Log(("vmsvga3dSetRenderState cid=%u cRenderStates=%d\n", cid, cRenderStates));
4464
4465	PVMSVGA3DCONTEXT pContext;
4466	int rc = vmsvga3dContextFromCid(pState, cid, &pContext);
4467	AssertRCReturn(rc, rc);
4468
4469	VMSVGA3D_SET_CURRENT_CONTEXT(pState, pContext);
4470
4471	for (unsigned i = 0; i < cRenderStates; i++)
4472	{
4473	GLenum enableCap = ~(GLenum)0;
4474	Log(("vmsvga3dSetRenderState: cid=%u state=%s (%d) val=%x\n", cid, vmsvga3dGetRenderStateName(pRenderState[i].state), pRenderState[i].state, pRenderState[i].uintValue));
4475	/* Save the render state for vm state saving. */
4476	ASSERT_GUEST_RETURN((unsigned)pRenderState[i].state < SVGA3D_RS_MAX, VERR_INVALID_PARAMETER);
4477	pContext->state.aRenderState[pRenderState[i].state] = pRenderState[i];
4478
4479	switch (pRenderState[i].state)
4480	{
4481	case SVGA3D_RS_ZENABLE: /* SVGA3dBool */
4482	enableCap = GL_DEPTH_TEST;
4483	val = pRenderState[i].uintValue;
4484	break;
4485
4486	case SVGA3D_RS_ZWRITEENABLE: /* SVGA3dBool */
4487	glDepthMask(!!pRenderState[i].uintValue);
4488	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
4489	break;
4490
4491	case SVGA3D_RS_ALPHATESTENABLE: /* SVGA3dBool */
4492	enableCap = GL_ALPHA_TEST;
4493	val = pRenderState[i].uintValue;
4494	break;
4495
4496	case SVGA3D_RS_DITHERENABLE: /* SVGA3dBool */
4497	enableCap = GL_DITHER;
4498	val = pRenderState[i].uintValue;
4499	break;
4500
4501	case SVGA3D_RS_FOGENABLE: /* SVGA3dBool */
4502	enableCap = GL_FOG;
4503	val = pRenderState[i].uintValue;
4504	break;
4505
4506	case SVGA3D_RS_SPECULARENABLE: /* SVGA3dBool */
4507	Log(("vmsvga3dSetRenderState: WARNING: not applicable.\n"));
4508	break;
4509
4510	case SVGA3D_RS_LIGHTINGENABLE: /* SVGA3dBool */
4511	enableCap = GL_LIGHTING;
4512	val = pRenderState[i].uintValue;
4513	break;
4514
4515	case SVGA3D_RS_NORMALIZENORMALS: /* SVGA3dBool */
4516	/* not applicable */
4517	Log(("vmsvga3dSetRenderState: WARNING: not applicable.\n"));
4518	break;
4519
4520	case SVGA3D_RS_POINTSPRITEENABLE: /* SVGA3dBool */
4521	enableCap = GL_POINT_SPRITE_ARB;
4522	val = pRenderState[i].uintValue;
4523	break;
4524
4525	case SVGA3D_RS_POINTSIZE: /* float */
4526	/** @todo we need to apply scaling for point sizes below the min or above the max; see Wine) */
4527	if (pRenderState[i].floatValue < pState->caps.flPointSize[0])
4528	pRenderState[i].floatValue = pState->caps.flPointSize[0];
4529	if (pRenderState[i].floatValue > pState->caps.flPointSize[1])
4530	pRenderState[i].floatValue = pState->caps.flPointSize[1];
4531
4532	glPointSize(pRenderState[i].floatValue);
4533	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
4534	Log(("SVGA3D_RS_POINTSIZE: %d\n", (uint32_t) (pRenderState[i].floatValue * 100.0)));
4535	break;
4536
4537	case SVGA3D_RS_POINTSIZEMIN: /* float */
4538	pState->ext.glPointParameterf(GL_POINT_SIZE_MIN, pRenderState[i].floatValue);
4539	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
4540	Log(("SVGA3D_RS_POINTSIZEMIN: %d\n", (uint32_t) (pRenderState[i].floatValue * 100.0)));
4541	break;
4542
4543	case SVGA3D_RS_POINTSIZEMAX: /* float */
4544	pState->ext.glPointParameterf(GL_POINT_SIZE_MAX, pRenderState[i].floatValue);
4545	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
4546	Log(("SVGA3D_RS_POINTSIZEMAX: %d\n", (uint32_t) (pRenderState[i].floatValue * 100.0)));
4547	break;
4548
4549	case SVGA3D_RS_POINTSCALEENABLE: /* SVGA3dBool */
4550	case SVGA3D_RS_POINTSCALE_A: /* float */
4551	case SVGA3D_RS_POINTSCALE_B: /* float */
4552	case SVGA3D_RS_POINTSCALE_C: /* float */
4553	Log(("vmsvga3dSetRenderState: WARNING: not applicable.\n"));
4554	break;
4555
4556	case SVGA3D_RS_AMBIENT: /* SVGA3dColor */
4557	{
4558	GLfloat color[4]; /* red, green, blue, alpha */
4559
4560	vmsvgaColor2GLFloatArray(pRenderState[i].uintValue, &color[0], &color[1], &color[2], &color[3]);
4561
4562	glLightModelfv(GL_LIGHT_MODEL_AMBIENT, color);
4563	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
4564	break;
4565	}
4566
4567	case SVGA3D_RS_CLIPPLANEENABLE: /* SVGA3dClipPlanes */
4568	{
4569	for (uint32_t j = 0; j < SVGA3D_NUM_CLIPPLANES; j++)
4570	{
4571	if (pRenderState[i].uintValue & RT_BIT(j))
4572	glEnable(GL_CLIP_PLANE0 + j);
4573	else
4574	glDisable(GL_CLIP_PLANE0 + j);
4575	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
4576	}
4577	break;
4578	}
4579
4580	case SVGA3D_RS_FOGCOLOR: /* SVGA3dColor */
4581	{
4582	GLfloat color[4]; /* red, green, blue, alpha */
4583
4584	vmsvgaColor2GLFloatArray(pRenderState[i].uintValue, &color[0], &color[1], &color[2], &color[3]);
4585
4586	glFogfv(GL_FOG_COLOR, color);
4587	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
4588	break;
4589	}
4590
4591	case SVGA3D_RS_FOGSTART: /* float */
4592	glFogf(GL_FOG_START, pRenderState[i].floatValue);
4593	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
4594	break;
4595
4596	case SVGA3D_RS_FOGEND: /* float */
4597	glFogf(GL_FOG_END, pRenderState[i].floatValue);
4598	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
4599	break;
4600
4601	case SVGA3D_RS_FOGDENSITY: /* float */
4602	glFogf(GL_FOG_DENSITY, pRenderState[i].floatValue);
4603	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
4604	break;
4605
4606	case SVGA3D_RS_RANGEFOGENABLE: /* SVGA3dBool */
4607	glFogi(GL_FOG_COORD_SRC, (pRenderState[i].uintValue) ? GL_FOG_COORD : GL_FRAGMENT_DEPTH);
4608	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
4609	break;
4610
4611	case SVGA3D_RS_FOGMODE: /* SVGA3dFogMode */
4612	{
4613	SVGA3dFogMode mode;
4614	mode.uintValue = pRenderState[i].uintValue;
4615
4616	enableCap = GL_FOG_MODE;
4617	switch (mode.function)
4618	{
4619	case SVGA3D_FOGFUNC_EXP:
4620	val = GL_EXP;
4621	break;
4622	case SVGA3D_FOGFUNC_EXP2:
4623	val = GL_EXP2;
4624	break;
4625	case SVGA3D_FOGFUNC_LINEAR:
4626	val = GL_LINEAR;
4627	break;
4628	default:
4629	AssertMsgFailedReturn(("Unexpected fog function %d\n", mode.function), VERR_INTERNAL_ERROR);
4630	break;
4631	}
4632
4633	/** @todo how to switch between vertex and pixel fog modes??? */
4634	Assert(mode.type == SVGA3D_FOGTYPE_PIXEL);
4635	#if 0
4636	/* The fog type determines the render state. */
4637	switch (mode.type)
4638	{
4639	case SVGA3D_FOGTYPE_VERTEX:
4640	renderState = D3DRS_FOGVERTEXMODE;
4641	break;
4642	case SVGA3D_FOGTYPE_PIXEL:
4643	renderState = D3DRS_FOGTABLEMODE;
4644	break;
4645	default:
4646	AssertMsgFailedReturn(("Unexpected fog type %d\n", mode.type), VERR_INTERNAL_ERROR);
4647	break;
4648	}
4649	#endif
4650
4651	/* Set the fog base to depth or range. */
4652	switch (mode.base)
4653	{
4654	case SVGA3D_FOGBASE_DEPTHBASED:
4655	glFogi(GL_FOG_COORD_SRC, GL_FRAGMENT_DEPTH);
4656	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
4657	break;
4658	case SVGA3D_FOGBASE_RANGEBASED:
4659	glFogi(GL_FOG_COORD_SRC, GL_FOG_COORD);
4660	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
4661	break;
4662	default:
4663	/* ignore */
4664	AssertMsgFailed(("Unexpected fog base %d\n", mode.base));
4665	break;
4666	}
4667	break;
4668	}
4669
4670	case SVGA3D_RS_FILLMODE: /* SVGA3dFillMode */
4671	{
4672	SVGA3dFillMode mode;
4673
4674	mode.uintValue = pRenderState[i].uintValue;
4675
4676	switch (mode.mode)
4677	{
4678	case SVGA3D_FILLMODE_POINT:
4679	val = GL_POINT;
4680	break;
4681	case SVGA3D_FILLMODE_LINE:
4682	val = GL_LINE;
4683	break;
4684	case SVGA3D_FILLMODE_FILL:
4685	val = GL_FILL;
4686	break;
4687	default:
4688	AssertMsgFailedReturn(("Unexpected fill mode %d\n", mode.mode), VERR_INTERNAL_ERROR);
4689	break;
4690	}
4691	/* Only front and back faces. Also recent Mesa guest drivers initialize the 'face' to zero. */
4692	ASSERT_GUEST(mode.face == SVGA3D_FACE_FRONT_BACK \|\| mode.face == SVGA3D_FACE_INVALID);
4693	glPolygonMode(GL_FRONT_AND_BACK, val);
4694	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
4695	break;
4696	}
4697
4698	case SVGA3D_RS_SHADEMODE: /* SVGA3dShadeMode */
4699	switch (pRenderState[i].uintValue)
4700	{
4701	case SVGA3D_SHADEMODE_FLAT:
4702	val = GL_FLAT;
4703	break;
4704
4705	case SVGA3D_SHADEMODE_SMOOTH:
4706	val = GL_SMOOTH;
4707	break;
4708
4709	default:
4710	AssertMsgFailedReturn(("Unexpected shade mode %d\n", pRenderState[i].uintValue), VERR_INTERNAL_ERROR);
4711	break;
4712	}
4713
4714	glShadeModel(val);
4715	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
4716	break;
4717
4718	case SVGA3D_RS_LINEPATTERN: /* SVGA3dLinePattern */
4719	/* No longer supported by d3d; mesagl comments suggest not all backends support it */
4720	/** @todo */
4721	Log(("WARNING: SVGA3D_RS_LINEPATTERN %x not supported!!\n", pRenderState[i].uintValue));
4722	/*
4723	renderState = D3DRS_LINEPATTERN;
4724	val = pRenderState[i].uintValue;
4725	*/
4726	break;
4727
4728	case SVGA3D_RS_ANTIALIASEDLINEENABLE: /* SVGA3dBool */
4729	enableCap = GL_LINE_SMOOTH;
4730	val = pRenderState[i].uintValue;
4731	break;
4732
4733	case SVGA3D_RS_LINEWIDTH: /* float */
4734	glLineWidth(pRenderState[i].floatValue);
4735	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
4736	break;
4737
4738	case SVGA3D_RS_SEPARATEALPHABLENDENABLE: /* SVGA3dBool */
4739	{
4740	/* Refresh the blending state based on the new enable setting.
4741	* This will take existing states and set them using either glBlend* or glBlend*Separate.
4742	*/
4743	static SVGA3dRenderStateName const saRefreshState[] =
4744	{
4745	SVGA3D_RS_SRCBLEND,
4746	SVGA3D_RS_BLENDEQUATION
4747	};
4748	SVGA3dRenderState renderstate[RT_ELEMENTS(saRefreshState)];
4749	for (uint32_t j = 0; j < RT_ELEMENTS(saRefreshState); ++j)
4750	{
4751	renderstate[j].state = saRefreshState[j];
4752	renderstate[j].uintValue = pContext->state.aRenderState[saRefreshState[j]].uintValue;
4753	}
4754
4755	rc = vmsvga3dBackSetRenderState(pThisCC, cid, 2, renderstate);
4756	AssertRCReturn(rc, rc);
4757
4758	if (pContext->state.aRenderState[SVGA3D_RS_BLENDENABLE].uintValue != 0)
4759	continue; /* Ignore if blend is enabled */
4760	/* Apply SVGA3D_RS_SEPARATEALPHABLENDENABLE as SVGA3D_RS_BLENDENABLE */
4761	} RT_FALL_THRU();
4762
4763	case SVGA3D_RS_BLENDENABLE: /* SVGA3dBool */
4764	enableCap = GL_BLEND;
4765	val = pRenderState[i].uintValue;
4766	break;
4767
4768	case SVGA3D_RS_SRCBLENDALPHA: /* SVGA3dBlendOp */
4769	case SVGA3D_RS_DSTBLENDALPHA: /* SVGA3dBlendOp */
4770	case SVGA3D_RS_SRCBLEND: /* SVGA3dBlendOp */
4771	case SVGA3D_RS_DSTBLEND: /* SVGA3dBlendOp */
4772	{
4773	GLint srcRGB, srcAlpha, dstRGB, dstAlpha;
4774	GLint blendop = vmsvga3dBlendOp2GL(pRenderState[i].uintValue);
4775
4776	glGetIntegerv(GL_BLEND_SRC_RGB, &srcRGB);
4777	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
4778	glGetIntegerv(GL_BLEND_DST_RGB, &dstRGB);
4779	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
4780	glGetIntegerv(GL_BLEND_DST_ALPHA, &dstAlpha);
4781	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
4782	glGetIntegerv(GL_BLEND_SRC_ALPHA, &srcAlpha);
4783	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
4784
4785	switch (pRenderState[i].state)
4786	{
4787	case SVGA3D_RS_SRCBLEND:
4788	srcRGB = blendop;
4789	break;
4790	case SVGA3D_RS_DSTBLEND:
4791	dstRGB = blendop;
4792	break;
4793	case SVGA3D_RS_SRCBLENDALPHA:
4794	srcAlpha = blendop;
4795	break;
4796	case SVGA3D_RS_DSTBLENDALPHA:
4797	dstAlpha = blendop;
4798	break;
4799	default:
4800	/* not possible; shut up gcc */
4801	AssertFailed();
4802	break;
4803	}
4804
4805	if (pContext->state.aRenderState[SVGA3D_RS_SEPARATEALPHABLENDENABLE].uintValue != 0)
4806	pState->ext.glBlendFuncSeparate(srcRGB, dstRGB, srcAlpha, dstAlpha);
4807	else
4808	glBlendFunc(srcRGB, dstRGB);
4809	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
4810	break;
4811	}
4812
4813	case SVGA3D_RS_BLENDEQUATIONALPHA: /* SVGA3dBlendEquation */
4814	case SVGA3D_RS_BLENDEQUATION: /* SVGA3dBlendEquation */
4815	if (pContext->state.aRenderState[SVGA3D_RS_SEPARATEALPHABLENDENABLE].uintValue != 0)
4816	{
4817	GLenum const modeRGB = vmsvga3dBlendEquation2GL(pContext->state.aRenderState[SVGA3D_RS_BLENDEQUATION].uintValue);
4818	GLenum const modeAlpha = vmsvga3dBlendEquation2GL(pContext->state.aRenderState[SVGA3D_RS_BLENDEQUATIONALPHA].uintValue);
4819	pState->ext.glBlendEquationSeparate(modeRGB, modeAlpha);
4820	}
4821	else
4822	{
4823	#if VBOX_VMSVGA3D_GL_HACK_LEVEL >= 0x102
4824	glBlendEquation(vmsvga3dBlendEquation2GL(pRenderState[i].uintValue));
4825	#else
4826	pState->ext.glBlendEquation(vmsvga3dBlendEquation2GL(pRenderState[i].uintValue));
4827	#endif
4828	}
4829	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
4830	break;
4831
4832	case SVGA3D_RS_BLENDCOLOR: /* SVGA3dColor */
4833	{
4834	GLfloat red, green, blue, alpha;
4835
4836	vmsvgaColor2GLFloatArray(pRenderState[i].uintValue, &red, &green, &blue, &alpha);
4837
4838	#if VBOX_VMSVGA3D_GL_HACK_LEVEL >= 0x102
4839	glBlendColor(red, green, blue, alpha);
4840	#else
4841	pState->ext.glBlendColor(red, green, blue, alpha);
4842	#endif
4843	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
4844	break;
4845	}
4846
4847	case SVGA3D_RS_CULLMODE: /* SVGA3dFace */
4848	{
4849	GLenum mode = GL_BACK; /* default for OpenGL */
4850
4851	switch (pRenderState[i].uintValue)
4852	{
4853	case SVGA3D_FACE_NONE:
4854	break;
4855	case SVGA3D_FACE_FRONT:
4856	mode = GL_FRONT;
4857	break;
4858	case SVGA3D_FACE_BACK:
4859	mode = GL_BACK;
4860	break;
4861	case SVGA3D_FACE_FRONT_BACK:
4862	mode = GL_FRONT_AND_BACK;
4863	break;
4864	default:
4865	AssertMsgFailedReturn(("Unexpected cull mode %d\n", pRenderState[i].uintValue), VERR_INTERNAL_ERROR);
4866	break;
4867	}
4868	enableCap = GL_CULL_FACE;
4869	if (pRenderState[i].uintValue != SVGA3D_FACE_NONE)
4870	{
4871	glCullFace(mode);
4872	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
4873	val = 1;
4874	}
4875	else
4876	val = 0;
4877	break;
4878	}
4879
4880	case SVGA3D_RS_ZFUNC: /* SVGA3dCmpFunc */
4881	glDepthFunc(vmsvgaCmpFunc2GL(pRenderState[i].uintValue));
4882	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
4883	break;
4884
4885	case SVGA3D_RS_ALPHAFUNC: /* SVGA3dCmpFunc */
4886	{
4887	GLclampf ref;
4888
4889	glGetFloatv(GL_ALPHA_TEST_REF, &ref);
4890	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
4891	glAlphaFunc(vmsvgaCmpFunc2GL(pRenderState[i].uintValue), ref);
4892	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
4893	break;
4894	}
4895
4896	case SVGA3D_RS_ALPHAREF: /* float (0.0 .. 1.0) */
4897	{
4898	GLint func;
4899
4900	glGetIntegerv(GL_ALPHA_TEST_FUNC, &func);
4901	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
4902	glAlphaFunc(func, pRenderState[i].floatValue);
4903	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
4904	break;
4905	}
4906
4907	case SVGA3D_RS_STENCILENABLE2SIDED: /* SVGA3dBool */
4908	{
4909	/* Refresh the stencil state based on the new enable setting.
4910	* This will take existing states and set them using either glStencil or glStencil*Separate.
4911	*/
4912	static SVGA3dRenderStateName const saRefreshState[] =
4913	{
4914	SVGA3D_RS_STENCILFUNC,
4915	SVGA3D_RS_STENCILFAIL,
4916	SVGA3D_RS_CCWSTENCILFUNC,
4917	SVGA3D_RS_CCWSTENCILFAIL
4918	};
4919	SVGA3dRenderState renderstate[RT_ELEMENTS(saRefreshState)];
4920	for (uint32_t j = 0; j < RT_ELEMENTS(saRefreshState); ++j)
4921	{
4922	renderstate[j].state = saRefreshState[j];
4923	renderstate[j].uintValue = pContext->state.aRenderState[saRefreshState[j]].uintValue;
4924	}
4925
4926	rc = vmsvga3dBackSetRenderState(pThisCC, cid, RT_ELEMENTS(renderstate), renderstate);
4927	AssertRCReturn(rc, rc);
4928
4929	if (pContext->state.aRenderState[SVGA3D_RS_STENCILENABLE].uintValue != 0)
4930	continue; /* Ignore if stencil is enabled */
4931	/* Apply SVGA3D_RS_STENCILENABLE2SIDED as SVGA3D_RS_STENCILENABLE. */
4932	} RT_FALL_THRU();
4933
4934	case SVGA3D_RS_STENCILENABLE: /* SVGA3dBool */
4935	enableCap = GL_STENCIL_TEST;
4936	val = pRenderState[i].uintValue;
4937	break;
4938
4939	case SVGA3D_RS_STENCILFUNC: /* SVGA3dCmpFunc */
4940	case SVGA3D_RS_STENCILREF: /* uint32_t */
4941	case SVGA3D_RS_STENCILMASK: /* uint32_t */
4942	{
4943	GLint func, ref;
4944	GLuint mask;
4945
4946	/* Query current values to have all parameters for glStencilFunc[Separate]. */
4947	glGetIntegerv(GL_STENCIL_FUNC, &func);
4948	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
4949	glGetIntegerv(GL_STENCIL_VALUE_MASK, (GLint *)&mask);
4950	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
4951	glGetIntegerv(GL_STENCIL_REF, &ref);
4952	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
4953
4954	/* Update the changed value. */
4955	switch (pRenderState[i].state)
4956	{
4957	case SVGA3D_RS_STENCILFUNC: /* SVGA3dCmpFunc */
4958	func = vmsvgaCmpFunc2GL(pRenderState[i].uintValue);
4959	break;
4960
4961	case SVGA3D_RS_STENCILREF: /* uint32_t */
4962	ref = pRenderState[i].uintValue;
4963	break;
4964
4965	case SVGA3D_RS_STENCILMASK: /* uint32_t */
4966	mask = pRenderState[i].uintValue;
4967	break;
4968
4969	default:
4970	/* not possible; shut up gcc */
4971	AssertFailed();
4972	break;
4973	}
4974
4975	if (pContext->state.aRenderState[SVGA3D_RS_STENCILENABLE2SIDED].uintValue != 0)
4976	{
4977	pState->ext.glStencilFuncSeparate(GL_FRONT, func, ref, mask);
4978	}
4979	else
4980	{
4981	glStencilFunc(func, ref, mask);
4982	}
4983	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
4984	break;
4985	}
4986
4987	case SVGA3D_RS_STENCILWRITEMASK: /* uint32_t */
4988	glStencilMask(pRenderState[i].uintValue);
4989	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
4990	break;
4991
4992	case SVGA3D_RS_STENCILFAIL: /* SVGA3dStencilOp */
4993	case SVGA3D_RS_STENCILZFAIL: /* SVGA3dStencilOp */
4994	case SVGA3D_RS_STENCILPASS: /* SVGA3dStencilOp */
4995	{
4996	GLint sfail, dpfail, dppass;
4997	GLenum const stencilop = vmsvgaStencipOp2GL(pRenderState[i].uintValue);
4998
4999	glGetIntegerv(GL_STENCIL_FAIL, &sfail);
5000	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
5001	glGetIntegerv(GL_STENCIL_PASS_DEPTH_FAIL, &dpfail);
5002	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
5003	glGetIntegerv(GL_STENCIL_PASS_DEPTH_PASS, &dppass);
5004	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
5005
5006	switch (pRenderState[i].state)
5007	{
5008	case SVGA3D_RS_STENCILFAIL: /* SVGA3dStencilOp */
5009	sfail = stencilop;
5010	break;
5011	case SVGA3D_RS_STENCILZFAIL: /* SVGA3dStencilOp */
5012	dpfail = stencilop;
5013	break;
5014	case SVGA3D_RS_STENCILPASS: /* SVGA3dStencilOp */
5015	dppass = stencilop;
5016	break;
5017	default:
5018	/* not possible; shut up gcc */
5019	AssertFailed();
5020	break;
5021	}
5022	if (pContext->state.aRenderState[SVGA3D_RS_STENCILENABLE2SIDED].uintValue != 0)
5023	{
5024	pState->ext.glStencilOpSeparate(GL_FRONT, sfail, dpfail, dppass);
5025	}
5026	else
5027	{
5028	glStencilOp(sfail, dpfail, dppass);
5029	}
5030	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
5031	break;
5032	}
5033
5034	case SVGA3D_RS_CCWSTENCILFUNC: /* SVGA3dCmpFunc */
5035	{
5036	GLint ref;
5037	GLuint mask;
5038	GLint const func = vmsvgaCmpFunc2GL(pRenderState[i].uintValue);
5039
5040	/* GL_STENCIL_VALUE_MASK and GL_STENCIL_REF are the same for both GL_FRONT and GL_BACK. */
5041	glGetIntegerv(GL_STENCIL_VALUE_MASK, (GLint *)&mask);
5042	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
5043	glGetIntegerv(GL_STENCIL_REF, &ref);
5044	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
5045
5046	pState->ext.glStencilFuncSeparate(GL_BACK, func, ref, mask);
5047	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
5048	break;
5049	}
5050
5051	case SVGA3D_RS_CCWSTENCILFAIL: /* SVGA3dStencilOp */
5052	case SVGA3D_RS_CCWSTENCILZFAIL: /* SVGA3dStencilOp */
5053	case SVGA3D_RS_CCWSTENCILPASS: /* SVGA3dStencilOp */
5054	{
5055	GLint sfail, dpfail, dppass;
5056	GLenum const stencilop = vmsvgaStencipOp2GL(pRenderState[i].uintValue);
5057
5058	glGetIntegerv(GL_STENCIL_BACK_FAIL, &sfail);
5059	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
5060	glGetIntegerv(GL_STENCIL_BACK_PASS_DEPTH_FAIL, &dpfail);
5061	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
5062	glGetIntegerv(GL_STENCIL_BACK_PASS_DEPTH_PASS, &dppass);
5063	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
5064
5065	switch (pRenderState[i].state)
5066	{
5067	case SVGA3D_RS_CCWSTENCILFAIL: /* SVGA3dStencilOp */
5068	sfail = stencilop;
5069	break;
5070	case SVGA3D_RS_CCWSTENCILZFAIL: /* SVGA3dStencilOp */
5071	dpfail = stencilop;
5072	break;
5073	case SVGA3D_RS_CCWSTENCILPASS: /* SVGA3dStencilOp */
5074	dppass = stencilop;
5075	break;
5076	default:
5077	/* not possible; shut up gcc */
5078	AssertFailed();
5079	break;
5080	}
5081	pState->ext.glStencilOpSeparate(GL_BACK, sfail, dpfail, dppass);
5082	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
5083	break;
5084	}
5085
5086	case SVGA3D_RS_ZBIAS: /* float */
5087	/** @todo unknown meaning; depth bias is not identical
5088	renderState = D3DRS_DEPTHBIAS;
5089	val = pRenderState[i].uintValue;
5090	*/
5091	Log(("vmsvga3dSetRenderState: WARNING unsupported SVGA3D_RS_ZBIAS\n"));
5092	break;
5093
5094	case SVGA3D_RS_DEPTHBIAS: /* float */
5095	{
5096	GLfloat factor;
5097
5098	/** @todo not sure if the d3d & ogl definitions are identical. */
5099
5100	/* Do not change the factor part. */
5101	glGetFloatv(GL_POLYGON_OFFSET_FACTOR, &factor);
5102	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
5103
5104	glPolygonOffset(factor, pRenderState[i].floatValue);
5105	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
5106	break;
5107	}
5108
5109	case SVGA3D_RS_SLOPESCALEDEPTHBIAS: /* float */
5110	{
5111	GLfloat units;
5112
5113	/** @todo not sure if the d3d & ogl definitions are identical. */
5114
5115	/* Do not change the factor part. */
5116	glGetFloatv(GL_POLYGON_OFFSET_UNITS, &units);
5117	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
5118
5119	glPolygonOffset(pRenderState[i].floatValue, units);
5120	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
5121	break;
5122	}
5123
5124	case SVGA3D_RS_COLORWRITEENABLE: /* SVGA3dColorMask */
5125	{
5126	GLboolean red, green, blue, alpha;
5127	SVGA3dColorMask mask;
5128
5129	mask.uintValue = pRenderState[i].uintValue;
5130
5131	red = mask.red;
5132	green = mask.green;
5133	blue = mask.blue;
5134	alpha = mask.alpha;
5135
5136	glColorMask(red, green, blue, alpha);
5137	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
5138	break;
5139	}
5140
5141	case SVGA3D_RS_COLORWRITEENABLE1: /* SVGA3dColorMask to D3DCOLORWRITEENABLE_* */
5142	case SVGA3D_RS_COLORWRITEENABLE2: /* SVGA3dColorMask to D3DCOLORWRITEENABLE_* */
5143	case SVGA3D_RS_COLORWRITEENABLE3: /* SVGA3dColorMask to D3DCOLORWRITEENABLE_* */
5144	Log(("vmsvga3dSetRenderState: WARNING SVGA3D_RS_COLORWRITEENABLEx not supported!!\n"));
5145	break;
5146
5147	case SVGA3D_RS_SCISSORTESTENABLE: /* SVGA3dBool */
5148	enableCap = GL_SCISSOR_TEST;
5149	val = pRenderState[i].uintValue;
5150	break;
5151
5152	#if 0
5153	case SVGA3D_RS_DIFFUSEMATERIALSOURCE: /* SVGA3dVertexMaterial */
5154	AssertCompile(D3DMCS_COLOR2 == SVGA3D_VERTEXMATERIAL_SPECULAR);
5155	renderState = D3DRS_DIFFUSEMATERIALSOURCE;
5156	val = pRenderState[i].uintValue;
5157	break;
5158
5159	case SVGA3D_RS_SPECULARMATERIALSOURCE: /* SVGA3dVertexMaterial */
5160	renderState = D3DRS_SPECULARMATERIALSOURCE;
5161	val = pRenderState[i].uintValue;
5162	break;
5163
5164	case SVGA3D_RS_AMBIENTMATERIALSOURCE: /* SVGA3dVertexMaterial */
5165	renderState = D3DRS_AMBIENTMATERIALSOURCE;
5166	val = pRenderState[i].uintValue;
5167	break;
5168
5169	case SVGA3D_RS_EMISSIVEMATERIALSOURCE: /* SVGA3dVertexMaterial */
5170	renderState = D3DRS_EMISSIVEMATERIALSOURCE;
5171	val = pRenderState[i].uintValue;
5172	break;
5173	#endif
5174
5175	case SVGA3D_RS_WRAP3: /* SVGA3dWrapFlags */
5176	case SVGA3D_RS_WRAP4: /* SVGA3dWrapFlags */
5177	case SVGA3D_RS_WRAP5: /* SVGA3dWrapFlags */
5178	case SVGA3D_RS_WRAP6: /* SVGA3dWrapFlags */
5179	case SVGA3D_RS_WRAP7: /* SVGA3dWrapFlags */
5180	case SVGA3D_RS_WRAP8: /* SVGA3dWrapFlags */
5181	case SVGA3D_RS_WRAP9: /* SVGA3dWrapFlags */
5182	case SVGA3D_RS_WRAP10: /* SVGA3dWrapFlags */
5183	case SVGA3D_RS_WRAP11: /* SVGA3dWrapFlags */
5184	case SVGA3D_RS_WRAP12: /* SVGA3dWrapFlags */
5185	case SVGA3D_RS_WRAP13: /* SVGA3dWrapFlags */
5186	case SVGA3D_RS_WRAP14: /* SVGA3dWrapFlags */
5187	case SVGA3D_RS_WRAP15: /* SVGA3dWrapFlags */
5188	Log(("vmsvga3dSetRenderState: WARNING unsupported SVGA3D_WRAPx (x >= 3)\n"));
5189	break;
5190
5191	case SVGA3D_RS_LASTPIXEL: /* SVGA3dBool */
5192	case SVGA3D_RS_TWEENFACTOR: /* float */
5193	case SVGA3D_RS_INDEXEDVERTEXBLENDENABLE: /* SVGA3dBool */
5194	case SVGA3D_RS_VERTEXBLEND: /* SVGA3dVertexBlendFlags */
5195	Log(("vmsvga3dSetRenderState: WARNING not applicable!!\n"));
5196	break;
5197
5198	case SVGA3D_RS_MULTISAMPLEANTIALIAS: /* SVGA3dBool */
5199	enableCap = GL_MULTISAMPLE;
5200	val = pRenderState[i].uintValue;
5201	break;
5202
5203	case SVGA3D_RS_MULTISAMPLEMASK: /* uint32_t */
5204	Log(("vmsvga3dSetRenderState: WARNING not applicable??!!\n"));
5205	break;
5206
5207	case SVGA3D_RS_COORDINATETYPE: /* SVGA3dCoordinateType */
5208	Assert(pRenderState[i].uintValue == SVGA3D_COORDINATE_LEFTHANDED);
5209	/** @todo setup a view matrix to scale the world space by -1 in the z-direction for right handed coordinates. */
5210	/*
5211	renderState = D3DRS_COORDINATETYPE;
5212	val = pRenderState[i].uintValue;
5213	*/
5214	break;
5215
5216	case SVGA3D_RS_FRONTWINDING: /* SVGA3dFrontWinding */
5217	Assert(pRenderState[i].uintValue == SVGA3D_FRONTWINDING_CW);
5218	/* Invert the selected mode because of y-inversion (?) */
5219	glFrontFace((pRenderState[i].uintValue != SVGA3D_FRONTWINDING_CW) ? GL_CW : GL_CCW);
5220	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
5221	break;
5222
5223	case SVGA3D_RS_OUTPUTGAMMA: /* float */
5224	//AssertFailed();
5225	/*
5226	D3DRS_SRGBWRITEENABLE ??
5227	renderState = D3DRS_OUTPUTGAMMA;
5228	val = pRenderState[i].uintValue;
5229	*/
5230	break;
5231
5232	#if 0
5233
5234	case SVGA3D_RS_VERTEXMATERIALENABLE: /* SVGA3dBool */
5235	//AssertFailed();
5236	renderState = D3DRS_INDEXEDVERTEXBLENDENABLE; /* correct?? */
5237	val = pRenderState[i].uintValue;
5238	break;
5239
5240	case SVGA3D_RS_TEXTUREFACTOR: /* SVGA3dColor */
5241	renderState = D3DRS_TEXTUREFACTOR;
5242	val = pRenderState[i].uintValue;
5243	break;
5244
5245	case SVGA3D_RS_LOCALVIEWER: /* SVGA3dBool */
5246	renderState = D3DRS_LOCALVIEWER;
5247	val = pRenderState[i].uintValue;
5248	break;
5249
5250	case SVGA3D_RS_ZVISIBLE: /* SVGA3dBool */
5251	AssertFailed();
5252	/*
5253	renderState = D3DRS_ZVISIBLE;
5254	val = pRenderState[i].uintValue;
5255	*/
5256	break;
5257
5258	case SVGA3D_RS_CLIPPING: /* SVGA3dBool */
5259	renderState = D3DRS_CLIPPING;
5260	val = pRenderState[i].uintValue;
5261	break;
5262
5263	case SVGA3D_RS_WRAP0: /* SVGA3dWrapFlags */
5264	glTexParameter GL_TEXTURE_WRAP_S
5265	Assert(SVGA3D_WRAPCOORD_3 == D3DWRAPCOORD_3);
5266	renderState = D3DRS_WRAP0;
5267	val = pRenderState[i].uintValue;
5268	break;
5269
5270	case SVGA3D_RS_WRAP1: /* SVGA3dWrapFlags */
5271	glTexParameter GL_TEXTURE_WRAP_T
5272	renderState = D3DRS_WRAP1;
5273	val = pRenderState[i].uintValue;
5274	break;
5275
5276	case SVGA3D_RS_WRAP2: /* SVGA3dWrapFlags */
5277	glTexParameter GL_TEXTURE_WRAP_R
5278	renderState = D3DRS_WRAP2;
5279	val = pRenderState[i].uintValue;
5280	break;
5281
5282
5283	case SVGA3D_RS_SEPARATEALPHABLENDENABLE: /* SVGA3dBool */
5284	renderState = D3DRS_SEPARATEALPHABLENDENABLE;
5285	val = pRenderState[i].uintValue;
5286	break;
5287
5288
5289	case SVGA3D_RS_BLENDEQUATIONALPHA: /* SVGA3dBlendEquation */
5290	renderState = D3DRS_BLENDOPALPHA;
5291	val = pRenderState[i].uintValue;
5292	break;
5293
5294	case SVGA3D_RS_TRANSPARENCYANTIALIAS: /* SVGA3dTransparencyAntialiasType */
5295	AssertFailed();
5296	/*
5297	renderState = D3DRS_TRANSPARENCYANTIALIAS;
5298	val = pRenderState[i].uintValue;
5299	*/
5300	break;
5301
5302	#endif
5303	default:
5304	AssertFailed();
5305	break;
5306	}
5307
5308	if (enableCap != ~(GLenum)0)
5309	{
5310	if (val)
5311	glEnable(enableCap);
5312	else
5313	glDisable(enableCap);
5314	}
5315	}
5316
5317	return VINF_SUCCESS;
5318	}
5319
5320	static DECLCALLBACK(int) vmsvga3dBackSetRenderTarget(PVGASTATECC pThisCC, uint32_t cid, SVGA3dRenderTargetType type, SVGA3dSurfaceImageId target)
5321	{
5322	PVMSVGA3DSTATE pState = pThisCC->svga.p3dState;
5323
5324	AssertReturn(pState, VERR_NO_MEMORY);
5325	AssertReturn((unsigned)type < SVGA3D_RT_MAX, VERR_INVALID_PARAMETER);
5326
5327	LogFunc(("cid=%u type=%x sid=%u\n", cid, type, target.sid));
5328
5329	PVMSVGA3DCONTEXT pContext;
5330	int rc = vmsvga3dContextFromCid(pState, cid, &pContext);
5331	AssertRCReturn(rc, rc);
5332
5333	VMSVGA3D_SET_CURRENT_CONTEXT(pState, pContext);
5334
5335	/* Save for vm state save/restore. */
5336	pContext->state.aRenderTargets[type] = target.sid;
5337
5338	if (target.sid == SVGA3D_INVALID_ID)
5339	{
5340	/* Disable render target. */
5341	switch (type)
5342	{
5343	case SVGA3D_RT_DEPTH:
5344	case SVGA3D_RT_STENCIL:
5345	pState->ext.glFramebufferRenderbuffer(GL_FRAMEBUFFER, (type == SVGA3D_RT_DEPTH) ? GL_DEPTH_ATTACHMENT : GL_STENCIL_ATTACHMENT, GL_RENDERBUFFER, 0);
5346	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
5347	break;
5348
5349	case SVGA3D_RT_COLOR0:
5350	case SVGA3D_RT_COLOR1:
5351	case SVGA3D_RT_COLOR2:
5352	case SVGA3D_RT_COLOR3:
5353	case SVGA3D_RT_COLOR4:
5354	case SVGA3D_RT_COLOR5:
5355	case SVGA3D_RT_COLOR6:
5356	case SVGA3D_RT_COLOR7:
5357	pState->ext.glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0 + type - SVGA3D_RT_COLOR0, 0, 0, 0);
5358	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
5359	break;
5360
5361	default:
5362	AssertFailedReturn(VERR_INVALID_PARAMETER);
5363	}
5364	return VINF_SUCCESS;
5365	}
5366
5367	PVMSVGA3DSURFACE pRenderTarget;
5368	rc = vmsvga3dSurfaceFromSid(pState, target.sid, &pRenderTarget);
5369	AssertRCReturn(rc, rc);
5370
5371	switch (type)
5372	{
5373	case SVGA3D_RT_DEPTH:
5374	case SVGA3D_RT_STENCIL:
5375	#if 1
5376	/* A texture surface can be used as a render target to fill it and later on used as a texture. */
5377	if (pRenderTarget->oglId.texture == OPENGL_INVALID_ID)
5378	{
5379	LogFunc(("create depth texture to be used as render target; surface id=%x type=%d format=%d -> create texture\n",
5380	target.sid, pRenderTarget->f.s.surface1Flags, pRenderTarget->format));
5381	rc = vmsvga3dBackCreateTexture(pThisCC, pContext, cid, pRenderTarget);
5382	AssertRCReturn(rc, rc);
5383	}
5384
5385	AssertReturn(pRenderTarget->oglId.texture != OPENGL_INVALID_ID, VERR_INVALID_PARAMETER);
5386	Assert(!pRenderTarget->fDirty);
5387
5388	pRenderTarget->f.s.surface1Flags \|= SVGA3D_SURFACE_HINT_DEPTHSTENCIL;
5389
5390	pState->ext.glFramebufferTexture2D(GL_FRAMEBUFFER,
5391	(type == SVGA3D_RT_DEPTH) ? GL_DEPTH_ATTACHMENT : GL_STENCIL_ATTACHMENT,
5392	GL_TEXTURE_2D, pRenderTarget->oglId.texture, target.mipmap);
5393	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
5394	#else
5395	AssertReturn(target.mipmap == 0, VERR_INVALID_PARAMETER);
5396	if (pRenderTarget->oglId.texture == OPENGL_INVALID_ID)
5397	{
5398	Log(("vmsvga3dSetRenderTarget: create renderbuffer to be used as render target; surface id=%x type=%d format=%d\n", target.sid, pRenderTarget->f.s.surface1Flags, pRenderTarget->internalFormatGL));
5399	pContext = &pState->SharedCtx;
5400	VMSVGA3D_SET_CURRENT_CONTEXT(pState, pContext);
5401
5402	pState->ext.glGenRenderbuffers(1, &pRenderTarget->oglId.renderbuffer);
5403	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
5404	pSurface->enmOGLResType = VMSVGA3D_OGLRESTYPE_RENDERBUFFER;
5405
5406	pState->ext.glBindRenderbuffer(GL_RENDERBUFFER, pRenderTarget->oglId.renderbuffer);
5407	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
5408
5409	pState->ext.glRenderbufferStorage(GL_RENDERBUFFER,
5410	pRenderTarget->internalFormatGL,
5411	pRenderTarget->paMipmapLevels[0].mipmapSize.width,
5412	pRenderTarget->paMipmapLevels[0].mipmapSize.height);
5413	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
5414
5415	pState->ext.glBindRenderbuffer(GL_RENDERBUFFER, OPENGL_INVALID_ID);
5416	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
5417
5418	pContext = pState->papContexts[cid];
5419	VMSVGA3D_SET_CURRENT_CONTEXT(pState, pContext);
5420	}
5421
5422	pState->ext.glBindRenderbuffer(GL_RENDERBUFFER, pRenderTarget->oglId.renderbuffer);
5423	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
5424	Assert(!pRenderTarget->fDirty);
5425	AssertReturn(pRenderTarget->oglId.texture != OPENGL_INVALID_ID, VERR_INVALID_PARAMETER);
5426
5427	pRenderTarget->f.s.surface1Flags \|= SVGA3D_SURFACE_HINT_DEPTHSTENCIL;
5428
5429	pState->ext.glFramebufferRenderbuffer(GL_FRAMEBUFFER,
5430	(type == SVGA3D_RT_DEPTH) ? GL_DEPTH_ATTACHMENT : GL_STENCIL_ATTACHMENT,
5431	GL_RENDERBUFFER, pRenderTarget->oglId.renderbuffer);
5432	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
5433	#endif
5434	break;
5435
5436	case SVGA3D_RT_COLOR0:
5437	case SVGA3D_RT_COLOR1:
5438	case SVGA3D_RT_COLOR2:
5439	case SVGA3D_RT_COLOR3:
5440	case SVGA3D_RT_COLOR4:
5441	case SVGA3D_RT_COLOR5:
5442	case SVGA3D_RT_COLOR6:
5443	case SVGA3D_RT_COLOR7:
5444	{
5445	/* A texture surface can be used as a render target to fill it and later on used as a texture. */
5446	if (pRenderTarget->oglId.texture == OPENGL_INVALID_ID)
5447	{
5448	Log(("vmsvga3dSetRenderTarget: create texture to be used as render target; surface id=%x type=%d format=%d -> create texture\n", target.sid, pRenderTarget->f.s.surface1Flags, pRenderTarget->format));
5449	rc = vmsvga3dBackCreateTexture(pThisCC, pContext, cid, pRenderTarget);
5450	AssertRCReturn(rc, rc);
5451	}
5452
5453	AssertReturn(pRenderTarget->oglId.texture != OPENGL_INVALID_ID, VERR_INVALID_PARAMETER);
5454	Assert(!pRenderTarget->fDirty);
5455
5456	pRenderTarget->f.s.surface1Flags \|= SVGA3D_SURFACE_HINT_RENDERTARGET;
5457
5458	GLenum textarget;
5459	if (pRenderTarget->f.s.surface1Flags & SVGA3D_SURFACE_CUBEMAP)
5460	textarget = vmsvga3dCubemapFaceFromIndex(target.face);
5461	else
5462	textarget = GL_TEXTURE_2D;
5463	pState->ext.glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0 + type - SVGA3D_RT_COLOR0,
5464	textarget, pRenderTarget->oglId.texture, target.mipmap);
5465	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
5466
5467	#ifdef DEBUG
5468	GLenum status = pState->ext.glCheckFramebufferStatus(GL_FRAMEBUFFER);
5469	if (status != GL_FRAMEBUFFER_COMPLETE)
5470	Log(("vmsvga3dSetRenderTarget: WARNING: glCheckFramebufferStatus returned %x\n", status));
5471	#endif
5472	/** @todo use glDrawBuffers too? */
5473	break;
5474	}
5475
5476	default:
5477	AssertFailedReturn(VERR_INVALID_PARAMETER);
5478	}
5479
5480	return VINF_SUCCESS;
5481	}
5482
5483	#if 0
5484	/**
5485	* Convert SVGA texture combiner value to its D3D equivalent
5486	*/
5487	static DWORD vmsvga3dTextureCombiner2D3D(uint32_t value)
5488	{
5489	switch (value)
5490	{
5491	case SVGA3D_TC_DISABLE:
5492	return D3DTOP_DISABLE;
5493	case SVGA3D_TC_SELECTARG1:
5494	return D3DTOP_SELECTARG1;
5495	case SVGA3D_TC_SELECTARG2:
5496	return D3DTOP_SELECTARG2;
5497	case SVGA3D_TC_MODULATE:
5498	return D3DTOP_MODULATE;
5499	case SVGA3D_TC_ADD:
5500	return D3DTOP_ADD;
5501	case SVGA3D_TC_ADDSIGNED:
5502	return D3DTOP_ADDSIGNED;
5503	case SVGA3D_TC_SUBTRACT:
5504	return D3DTOP_SUBTRACT;
5505	case SVGA3D_TC_BLENDTEXTUREALPHA:
5506	return D3DTOP_BLENDTEXTUREALPHA;
5507	case SVGA3D_TC_BLENDDIFFUSEALPHA:
5508	return D3DTOP_BLENDDIFFUSEALPHA;
5509	case SVGA3D_TC_BLENDCURRENTALPHA:
5510	return D3DTOP_BLENDCURRENTALPHA;
5511	case SVGA3D_TC_BLENDFACTORALPHA:
5512	return D3DTOP_BLENDFACTORALPHA;
5513	case SVGA3D_TC_MODULATE2X:
5514	return D3DTOP_MODULATE2X;
5515	case SVGA3D_TC_MODULATE4X:
5516	return D3DTOP_MODULATE4X;
5517	case SVGA3D_TC_DSDT:
5518	AssertFailed(); /** @todo ??? */
5519	return D3DTOP_DISABLE;
5520	case SVGA3D_TC_DOTPRODUCT3:
5521	return D3DTOP_DOTPRODUCT3;
5522	case SVGA3D_TC_BLENDTEXTUREALPHAPM:
5523	return D3DTOP_BLENDTEXTUREALPHAPM;
5524	case SVGA3D_TC_ADDSIGNED2X:
5525	return D3DTOP_ADDSIGNED2X;
5526	case SVGA3D_TC_ADDSMOOTH:
5527	return D3DTOP_ADDSMOOTH;
5528	case SVGA3D_TC_PREMODULATE:
5529	return D3DTOP_PREMODULATE;
5530	case SVGA3D_TC_MODULATEALPHA_ADDCOLOR:
5531	return D3DTOP_MODULATEALPHA_ADDCOLOR;
5532	case SVGA3D_TC_MODULATECOLOR_ADDALPHA:
5533	return D3DTOP_MODULATECOLOR_ADDALPHA;
5534	case SVGA3D_TC_MODULATEINVALPHA_ADDCOLOR:
5535	return D3DTOP_MODULATEINVALPHA_ADDCOLOR;
5536	case SVGA3D_TC_MODULATEINVCOLOR_ADDALPHA:
5537	return D3DTOP_MODULATEINVCOLOR_ADDALPHA;
5538	case SVGA3D_TC_BUMPENVMAPLUMINANCE:
5539	return D3DTOP_BUMPENVMAPLUMINANCE;
5540	case SVGA3D_TC_MULTIPLYADD:
5541	return D3DTOP_MULTIPLYADD;
5542	case SVGA3D_TC_LERP:
5543	return D3DTOP_LERP;
5544	default:
5545	AssertFailed();
5546	return D3DTOP_DISABLE;
5547	}
5548	}
5549
5550	/**
5551	* Convert SVGA texture arg data value to its D3D equivalent
5552	*/
5553	static DWORD vmsvga3dTextureArgData2D3D(uint32_t value)
5554	{
5555	switch (value)
5556	{
5557	case SVGA3D_TA_CONSTANT:
5558	return D3DTA_CONSTANT;
5559	case SVGA3D_TA_PREVIOUS:
5560	return D3DTA_CURRENT; /* current = previous */
5561	case SVGA3D_TA_DIFFUSE:
5562	return D3DTA_DIFFUSE;
5563	case SVGA3D_TA_TEXTURE:
5564	return D3DTA_TEXTURE;
5565	case SVGA3D_TA_SPECULAR:
5566	return D3DTA_SPECULAR;
5567	default:
5568	AssertFailed();
5569	return 0;
5570	}
5571	}
5572
5573	/**
5574	* Convert SVGA texture transform flag value to its D3D equivalent
5575	*/
5576	static DWORD vmsvga3dTextTransformFlags2D3D(uint32_t value)
5577	{
5578	switch (value)
5579	{
5580	case SVGA3D_TEX_TRANSFORM_OFF:
5581	return D3DTTFF_DISABLE;
5582	case SVGA3D_TEX_TRANSFORM_S:
5583	return D3DTTFF_COUNT1; /** @todo correct? */
5584	case SVGA3D_TEX_TRANSFORM_T:
5585	return D3DTTFF_COUNT2; /** @todo correct? */
5586	case SVGA3D_TEX_TRANSFORM_R:
5587	return D3DTTFF_COUNT3; /** @todo correct? */
5588	case SVGA3D_TEX_TRANSFORM_Q:
5589	return D3DTTFF_COUNT4; /** @todo correct? */
5590	case SVGA3D_TEX_PROJECTED:
5591	return D3DTTFF_PROJECTED;
5592	default:
5593	AssertFailed();
5594	return 0;
5595	}
5596	}
5597	#endif
5598
5599	static GLenum vmsvga3dTextureAddress2OGL(SVGA3dTextureAddress value)
5600	{
5601	switch (value)
5602	{
5603	case SVGA3D_TEX_ADDRESS_WRAP:
5604	return GL_REPEAT;
5605	case SVGA3D_TEX_ADDRESS_MIRROR:
5606	return GL_MIRRORED_REPEAT;
5607	case SVGA3D_TEX_ADDRESS_CLAMP:
5608	return GL_CLAMP_TO_EDGE;
5609	case SVGA3D_TEX_ADDRESS_BORDER:
5610	return GL_CLAMP_TO_BORDER;
5611	case SVGA3D_TEX_ADDRESS_MIRRORONCE:
5612	AssertFailed();
5613	return GL_CLAMP_TO_EDGE_SGIS; /** @todo correct? */
5614
5615	case SVGA3D_TEX_ADDRESS_EDGE:
5616	case SVGA3D_TEX_ADDRESS_INVALID:
5617	default:
5618	AssertFailed();
5619	return GL_REPEAT; /* default */
5620	}
5621	}
5622
5623	static GLenum vmsvga3dTextureFilter2OGL(SVGA3dTextureFilter value)
5624	{
5625	switch (value)
5626	{
5627	case SVGA3D_TEX_FILTER_NONE:
5628	case SVGA3D_TEX_FILTER_LINEAR:
5629	case SVGA3D_TEX_FILTER_ANISOTROPIC: /* Anisotropic filtering is controlled by SVGA3D_TS_TEXTURE_ANISOTROPIC_LEVEL */
5630	return GL_LINEAR;
5631	case SVGA3D_TEX_FILTER_NEAREST:
5632	return GL_NEAREST;
5633	case SVGA3D_TEX_FILTER_FLATCUBIC: // Deprecated, not implemented
5634	case SVGA3D_TEX_FILTER_GAUSSIANCUBIC: // Deprecated, not implemented
5635	case SVGA3D_TEX_FILTER_PYRAMIDALQUAD: // Not currently implemented
5636	case SVGA3D_TEX_FILTER_GAUSSIANQUAD: // Not currently implemented
5637	default:
5638	AssertFailed();
5639	return GL_LINEAR; /* default */
5640	}
5641	}
5642
5643	uint32_t vmsvga3dSVGA3dColor2RGBA(SVGA3dColor value)
5644	{
5645	/* flip the red and blue bytes */
5646	uint8_t blue = value & 0xff;
5647	uint8_t red = (value >> 16) & 0xff;
5648	return (value & 0xff00ff00) \| red \| (blue << 16);
5649	}
5650
5651	static DECLCALLBACK(int) vmsvga3dBackSetTextureState(PVGASTATECC pThisCC, uint32_t cid, uint32_t cTextureStates, SVGA3dTextureState *pTextureState)
5652	{
5653	GLenum val = ~(GLenum)0; /* Shut up MSC. */
5654	GLenum currentStage = ~(GLenum)0;
5655	PVMSVGA3DSTATE pState = pThisCC->svga.p3dState;
5656	AssertReturn(pState, VERR_NO_MEMORY);
5657
5658	Log(("vmsvga3dSetTextureState %x cTextureState=%d\n", cid, cTextureStates));
5659
5660	PVMSVGA3DCONTEXT pContext;
5661	int rc = vmsvga3dContextFromCid(pState, cid, &pContext);
5662	AssertRCReturn(rc, rc);
5663
5664	VMSVGA3D_SET_CURRENT_CONTEXT(pState, pContext);
5665
5666	/* Which texture is active for the current stage. Needed to use right OpenGL target when setting parameters. */
5667	PVMSVGA3DSURFACE pCurrentTextureSurface = NULL;
5668
5669	for (uint32_t i = 0; i < cTextureStates; ++i)
5670	{
5671	GLenum textureType = ~(GLenum)0;
5672	#if 0
5673	GLenum samplerType = ~(GLenum)0;
5674	#endif
5675
5676	LogFunc(("cid=%u stage=%d type=%s (%x) val=%x\n",
5677	cid, pTextureState[i].stage, vmsvga3dTextureStateToString(pTextureState[i].name), pTextureState[i].name, pTextureState[i].value));
5678
5679	/* Record the texture state for vm state saving. */
5680	if ( pTextureState[i].stage < RT_ELEMENTS(pContext->state.aTextureStates)
5681	&& (unsigned)pTextureState[i].name < RT_ELEMENTS(pContext->state.aTextureStates[0]))
5682	{
5683	pContext->state.aTextureStates[pTextureState[i].stage][pTextureState[i].name] = pTextureState[i];
5684	}
5685
5686	/* Activate the right texture unit for subsequent texture state changes. */
5687	if (pTextureState[i].stage != currentStage \|\| i == 0)
5688	{
5689	/** @todo Is this the appropriate limit for all kinds of textures? It is the
5690	* size of aSidActiveTextures and for binding/unbinding we cannot exceed it. */
5691	if (pTextureState[i].stage < RT_ELEMENTS(pContext->state.aTextureStates))
5692	{
5693	pState->ext.glActiveTexture(GL_TEXTURE0 + pTextureState[i].stage);
5694	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
5695	currentStage = pTextureState[i].stage;
5696	}
5697	else
5698	{
5699	AssertMsgFailed(("pTextureState[%d].stage=%#x name=%#x\n", i, pTextureState[i].stage, pTextureState[i].name));
5700	continue;
5701	}
5702
5703	if (pContext->aSidActiveTextures[currentStage] != SVGA3D_INVALID_ID)
5704	{
5705	rc = vmsvga3dSurfaceFromSid(pState, pContext->aSidActiveTextures[currentStage], &pCurrentTextureSurface);
5706	AssertRCReturn(rc, rc);
5707	}
5708	else
5709	pCurrentTextureSurface = NULL; /* Make sure that no stale pointer is used. */
5710	}
5711
5712	switch (pTextureState[i].name)
5713	{
5714	case SVGA3D_TS_BUMPENVMAT00: /* float */
5715	case SVGA3D_TS_BUMPENVMAT01: /* float */
5716	case SVGA3D_TS_BUMPENVMAT10: /* float */
5717	case SVGA3D_TS_BUMPENVMAT11: /* float */
5718	case SVGA3D_TS_BUMPENVLSCALE: /* float */
5719	case SVGA3D_TS_BUMPENVLOFFSET: /* float */
5720	Log(("vmsvga3dSetTextureState: bump mapping texture options not supported!!\n"));
5721	break;
5722
5723	case SVGA3D_TS_COLOROP: /* SVGA3dTextureCombiner */
5724	case SVGA3D_TS_COLORARG0: /* SVGA3dTextureArgData */
5725	case SVGA3D_TS_COLORARG1: /* SVGA3dTextureArgData */
5726	case SVGA3D_TS_COLORARG2: /* SVGA3dTextureArgData */
5727	case SVGA3D_TS_ALPHAOP: /* SVGA3dTextureCombiner */
5728	case SVGA3D_TS_ALPHAARG0: /* SVGA3dTextureArgData */
5729	case SVGA3D_TS_ALPHAARG1: /* SVGA3dTextureArgData */
5730	case SVGA3D_TS_ALPHAARG2: /* SVGA3dTextureArgData */
5731	/** @todo not used by MesaGL */
5732	Log(("vmsvga3dSetTextureState: colorop/alphaop not yet supported!!\n"));
5733	break;
5734	#if 0
5735
5736	case SVGA3D_TS_TEXCOORDINDEX: /* uint32_t */
5737	textureType = D3DTSS_TEXCOORDINDEX;
5738	val = pTextureState[i].value;
5739	break;
5740
5741	case SVGA3D_TS_TEXTURETRANSFORMFLAGS: /* SVGA3dTexTransformFlags */
5742	textureType = D3DTSS_TEXTURETRANSFORMFLAGS;
5743	val = vmsvga3dTextTransformFlags2D3D(pTextureState[i].value);
5744	break;
5745	#endif
5746
5747	case SVGA3D_TS_BIND_TEXTURE: /* SVGA3dSurfaceId */
5748	{
5749	uint32_t const sid = pTextureState[i].value;
5750
5751	Log(("SVGA3D_TS_BIND_TEXTURE: stage %d, texture sid=%u replacing sid=%u\n",
5752	currentStage, sid, pContext->aSidActiveTextures[currentStage]));
5753
5754	/* Only if texture actually changed. */ /// @todo needs testing.
5755	if (pContext->aSidActiveTextures[currentStage] != sid)
5756	{
5757	if (pCurrentTextureSurface)
5758	{
5759	/* Unselect the currently associated texture. */
5760	glBindTexture(pCurrentTextureSurface->targetGL, 0);
5761	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
5762
5763	if (currentStage < 8)
5764	{
5765	/* Necessary for the fixed pipeline. */
5766	glDisable(pCurrentTextureSurface->targetGL);
5767	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
5768	}
5769
5770	pCurrentTextureSurface = NULL;
5771	}
5772
5773	if (sid == SVGA3D_INVALID_ID)
5774	{
5775	Assert(pCurrentTextureSurface == NULL);
5776	}
5777	else
5778	{
5779	PVMSVGA3DSURFACE pSurface;
5780	rc = vmsvga3dSurfaceFromSid(pState, sid, &pSurface);
5781	AssertRCReturn(rc, rc);
5782
5783	Log(("SVGA3D_TS_BIND_TEXTURE: stage %d, texture sid=%u (%d,%d) replacing sid=%u\n",
5784	currentStage, sid, pSurface->paMipmapLevels[0].mipmapSize.width,
5785	pSurface->paMipmapLevels[0].mipmapSize.height, pContext->aSidActiveTextures[currentStage]));
5786
5787	if (pSurface->oglId.texture == OPENGL_INVALID_ID)
5788	{
5789	Log(("CreateTexture (%d,%d) levels=%d\n",
5790	pSurface->paMipmapLevels[0].mipmapSize.width, pSurface->paMipmapLevels[0].mipmapSize.height, pSurface->cLevels));
5791	rc = vmsvga3dBackCreateTexture(pThisCC, pContext, cid, pSurface);
5792	AssertRCReturn(rc, rc);
5793	}
5794
5795	glBindTexture(pSurface->targetGL, pSurface->oglId.texture);
5796	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
5797
5798	if (currentStage < 8)
5799	{
5800	/* Necessary for the fixed pipeline. */
5801	glEnable(pSurface->targetGL);
5802	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
5803	}
5804
5805	/* Remember the currently active texture. */
5806	pCurrentTextureSurface = pSurface;
5807
5808	/* Recreate the texture state as glBindTexture resets them all (sigh). */
5809	for (uint32_t iStage = 0; iStage < RT_ELEMENTS(pContext->state.aTextureStates); iStage++)
5810	{
5811	for (uint32_t j = 0; j < RT_ELEMENTS(pContext->state.aTextureStates[0]); j++)
5812	{
5813	SVGA3dTextureState *pTextureStateIter = &pContext->state.aTextureStates[iStage][j];
5814
5815	if ( pTextureStateIter->name != SVGA3D_TS_INVALID
5816	&& pTextureStateIter->name != SVGA3D_TS_BIND_TEXTURE)
5817	vmsvga3dBackSetTextureState(pThisCC, pContext->id, 1, pTextureStateIter);
5818	}
5819	}
5820	}
5821
5822	pContext->aSidActiveTextures[currentStage] = sid;
5823	}
5824
5825	/* Finished; continue with the next one. */
5826	continue;
5827	}
5828
5829	case SVGA3D_TS_ADDRESSW: /* SVGA3dTextureAddress */
5830	textureType = GL_TEXTURE_WRAP_R; /* R = W */
5831	val = vmsvga3dTextureAddress2OGL((SVGA3dTextureAddress)pTextureState[i].value);
5832	break;
5833
5834	case SVGA3D_TS_ADDRESSU: /* SVGA3dTextureAddress */
5835	textureType = GL_TEXTURE_WRAP_S; /* S = U */
5836	val = vmsvga3dTextureAddress2OGL((SVGA3dTextureAddress)pTextureState[i].value);
5837	break;
5838
5839	case SVGA3D_TS_ADDRESSV: /* SVGA3dTextureAddress */
5840	textureType = GL_TEXTURE_WRAP_T; /* T = V */
5841	val = vmsvga3dTextureAddress2OGL((SVGA3dTextureAddress)pTextureState[i].value);
5842	break;
5843
5844	case SVGA3D_TS_MIPFILTER: /* SVGA3dTextureFilter */
5845	case SVGA3D_TS_MINFILTER: /* SVGA3dTextureFilter */
5846	{
5847	uint32_t mipFilter = pContext->state.aTextureStates[currentStage][SVGA3D_TS_MIPFILTER].value;
5848	uint32_t minFilter = pContext->state.aTextureStates[currentStage][SVGA3D_TS_MINFILTER].value;
5849
5850	/* If SVGA3D_TS_MIPFILTER is set to NONE, then use SVGA3D_TS_MIPFILTER, otherwise SVGA3D_TS_MIPFILTER enables mipmap minification. */
5851	textureType = GL_TEXTURE_MIN_FILTER;
5852	if (mipFilter != SVGA3D_TEX_FILTER_NONE)
5853	{
5854	if (minFilter == SVGA3D_TEX_FILTER_NEAREST)
5855	{
5856	if (mipFilter == SVGA3D_TEX_FILTER_LINEAR)
5857	val = GL_NEAREST_MIPMAP_LINEAR;
5858	else
5859	val = GL_NEAREST_MIPMAP_NEAREST;
5860	}
5861	else
5862	{
5863	if (mipFilter == SVGA3D_TEX_FILTER_LINEAR)
5864	val = GL_LINEAR_MIPMAP_LINEAR;
5865	else
5866	val = GL_LINEAR_MIPMAP_NEAREST;
5867	}
5868	}
5869	else
5870	val = vmsvga3dTextureFilter2OGL((SVGA3dTextureFilter)minFilter);
5871	break;
5872	}
5873
5874	case SVGA3D_TS_MAGFILTER: /* SVGA3dTextureFilter */
5875	textureType = GL_TEXTURE_MAG_FILTER;
5876	val = vmsvga3dTextureFilter2OGL((SVGA3dTextureFilter)pTextureState[i].value);
5877	Assert(val == GL_NEAREST \|\| val == GL_LINEAR);
5878	break;
5879
5880	case SVGA3D_TS_BORDERCOLOR: /* SVGA3dColor */
5881	{
5882	GLfloat color[4]; /* red, green, blue, alpha */
5883	vmsvgaColor2GLFloatArray(pTextureState[i].value, &color[0], &color[1], &color[2], &color[3]);
5884
5885	GLenum targetGL;
5886	if (pCurrentTextureSurface)
5887	targetGL = pCurrentTextureSurface->targetGL;
5888	else
5889	{
5890	/* No texture bound, assume 2D. */
5891	targetGL = GL_TEXTURE_2D;
5892	}
5893
5894	glTexParameterfv(targetGL, GL_TEXTURE_BORDER_COLOR, color); /* Identical; default 0.0 identical too */
5895	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
5896	break;
5897	}
5898
5899	case SVGA3D_TS_TEXTURE_LOD_BIAS: /* float */
5900	{
5901	GLenum targetGL;
5902	if (pCurrentTextureSurface)
5903	targetGL = pCurrentTextureSurface->targetGL;
5904	else
5905	{
5906	/* No texture bound, assume 2D. */
5907	targetGL = GL_TEXTURE_2D;
5908	}
5909
5910	glTexParameterf(targetGL, GL_TEXTURE_LOD_BIAS, pTextureState[i].floatValue); /* Identical; default 0.0 identical too */
5911	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
5912	break;
5913	}
5914
5915	case SVGA3D_TS_TEXTURE_MIPMAP_LEVEL: /* uint32_t */
5916	textureType = GL_TEXTURE_BASE_LEVEL;
5917	val = pTextureState[i].value;
5918	break;
5919
5920	case SVGA3D_TS_TEXTURE_ANISOTROPIC_LEVEL: /* uint32_t */
5921	if (pState->caps.fTextureFilterAnisotropicSupported)
5922	{
5923	textureType = GL_TEXTURE_MAX_ANISOTROPY_EXT;
5924	val = RT_MIN((GLint)pTextureState[i].value, pState->caps.maxTextureAnisotropy);
5925	} /* otherwise ignore. */
5926	break;
5927
5928	#if 0
5929	case SVGA3D_TS_GAMMA: /* float */
5930	samplerType = D3DSAMP_SRGBTEXTURE;
5931	/* Boolean in D3D */
5932	if (pTextureState[i].floatValue == 1.0f)
5933	val = FALSE;
5934	else
5935	val = TRUE;
5936	break;
5937	#endif
5938	/* Internal commands, that don't map directly to the SetTextureStageState API. */
5939	case SVGA3D_TS_TEXCOORDGEN: /* SVGA3dTextureCoordGen */
5940	AssertFailed();
5941	break;
5942
5943	default:
5944	//AssertFailed();
5945	break;
5946	}
5947
5948	if (textureType != ~(GLenum)0)
5949	{
5950	GLenum targetGL;
5951	if (pCurrentTextureSurface)
5952	targetGL = pCurrentTextureSurface->targetGL;
5953	else
5954	{
5955	/* No texture bound, assume 2D. */
5956	targetGL = GL_TEXTURE_2D;
5957	}
5958
5959	switch (pTextureState[i].name)
5960	{
5961	case SVGA3D_TS_MINFILTER:
5962	case SVGA3D_TS_MAGFILTER:
5963	{
5964	if (pState->caps.fTextureFilterAnisotropicSupported)
5965	{
5966	uint32_t const anisotropyLevel = (SVGA3dTextureFilter)pTextureState[i].value == SVGA3D_TEX_FILTER_ANISOTROPIC
5967	? RT_MAX(1, pContext->state.aTextureStates[currentStage][SVGA3D_TS_TEXTURE_ANISOTROPIC_LEVEL].value)
5968	: 1;
5969	glTexParameteri(targetGL, GL_TEXTURE_MAX_ANISOTROPY_EXT, RT_MIN((GLint)anisotropyLevel, pState->caps.maxTextureAnisotropy));
5970	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
5971	}
5972	} break;
5973
5974	default: break;
5975	}
5976
5977	glTexParameteri(targetGL, textureType, val);
5978	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
5979	}
5980	}
5981
5982	return VINF_SUCCESS;
5983	}
5984
5985	static DECLCALLBACK(int) vmsvga3dBackSetMaterial(PVGASTATECC pThisCC, uint32_t cid, SVGA3dFace face, SVGA3dMaterial *pMaterial)
5986	{
5987	PVMSVGA3DSTATE pState = pThisCC->svga.p3dState;
5988	AssertReturn(pState, VERR_NO_MEMORY);
5989
5990	LogFunc(("cid=%u face %d\n", cid, face));
5991
5992	PVMSVGA3DCONTEXT pContext;
5993	int rc = vmsvga3dContextFromCid(pState, cid, &pContext);
5994	AssertRCReturn(rc, rc);
5995
5996	VMSVGA3D_SET_CURRENT_CONTEXT(pState, pContext);
5997
5998	GLenum oglFace;
5999	switch (face)
6000	{
6001	case SVGA3D_FACE_NONE:
6002	case SVGA3D_FACE_FRONT:
6003	oglFace = GL_FRONT;
6004	break;
6005
6006	case SVGA3D_FACE_BACK:
6007	oglFace = GL_BACK;
6008	break;
6009
6010	case SVGA3D_FACE_FRONT_BACK:
6011	oglFace = GL_FRONT_AND_BACK;
6012	break;
6013
6014	default:
6015	AssertFailedReturn(VERR_INVALID_PARAMETER);
6016	}
6017
6018	/* Save for vm state save/restore. */
6019	pContext->state.aMaterial[face].fValid = true;
6020	pContext->state.aMaterial[face].material = *pMaterial;
6021	pContext->state.u32UpdateFlags \|= VMSVGA3D_UPDATE_MATERIAL;
6022
6023	glMaterialfv(oglFace, GL_DIFFUSE, pMaterial->diffuse);
6024	glMaterialfv(oglFace, GL_AMBIENT, pMaterial->ambient);
6025	glMaterialfv(oglFace, GL_SPECULAR, pMaterial->specular);
6026	glMaterialfv(oglFace, GL_EMISSION, pMaterial->emissive);
6027	glMaterialfv(oglFace, GL_SHININESS, &pMaterial->shininess);
6028	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
6029
6030	return VINF_SUCCESS;
6031	}
6032
6033	/** @todo Move into separate library as we are using logic from Wine here. */
6034	static DECLCALLBACK(int) vmsvga3dBackSetLightData(PVGASTATECC pThisCC, uint32_t cid, uint32_t index, SVGA3dLightData *pData)
6035	{
6036	PVMSVGA3DSTATE pState = pThisCC->svga.p3dState;
6037	AssertReturn(pState, VERR_NO_MEMORY);
6038
6039	LogFunc(("vmsvga3dSetLightData cid=%u index=%d type=%d\n", cid, index, pData->type));
6040	ASSERT_GUEST_RETURN(index < SVGA3D_MAX_LIGHTS, VERR_INVALID_PARAMETER);
6041
6042	PVMSVGA3DCONTEXT pContext;
6043	int rc = vmsvga3dContextFromCid(pState, cid, &pContext);
6044	AssertRCReturn(rc, rc);
6045
6046	VMSVGA3D_SET_CURRENT_CONTEXT(pState, pContext);
6047
6048	/* Store for vm state save/restore */
6049	pContext->state.aLightData[index].fValidData = true;
6050	pContext->state.aLightData[index].data = *pData;
6051
6052	if ( pData->attenuation0 < 0.0f
6053	\|\| pData->attenuation1 < 0.0f
6054	\|\| pData->attenuation2 < 0.0f)
6055	{
6056	Log(("vmsvga3dSetLightData: invalid negative attenuation values!!\n"));
6057	return VINF_SUCCESS; /* ignore; could crash the GL driver */
6058	}
6059
6060	/* Light settings are affected by the model view in OpenGL, the View transform in direct3d */
6061	glMatrixMode(GL_MODELVIEW);
6062	glPushMatrix();
6063	glLoadMatrixf(pContext->state.aTransformState[SVGA3D_TRANSFORM_VIEW].matrix);
6064
6065	glLightfv(GL_LIGHT0 + index, GL_DIFFUSE, pData->diffuse);
6066	glLightfv(GL_LIGHT0 + index, GL_SPECULAR, pData->specular);
6067	glLightfv(GL_LIGHT0 + index, GL_AMBIENT, pData->ambient);
6068
6069	float QuadAttenuation;
6070	if (pData->range * pData->range >= FLT_MIN)
6071	QuadAttenuation = 1.4f / (pData->range * pData->range);
6072	else
6073	QuadAttenuation = 0.0f;
6074
6075	switch (pData->type)
6076	{
6077	case SVGA3D_LIGHTTYPE_POINT:
6078	{
6079	GLfloat position[4];
6080
6081	position[0] = pData->position[0];
6082	position[1] = pData->position[1];
6083	position[2] = pData->position[2];
6084	position[3] = 1.0f;
6085
6086	glLightfv(GL_LIGHT0 + index, GL_POSITION, position);
6087	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
6088
6089	glLightf(GL_LIGHT0 + index, GL_SPOT_CUTOFF, 180.0f);
6090	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
6091
6092	/* Attenuation - Are these right? guessing... */
6093	glLightf(GL_LIGHT0 + index, GL_CONSTANT_ATTENUATION, pData->attenuation0);
6094	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
6095
6096	glLightf(GL_LIGHT0 + index, GL_LINEAR_ATTENUATION, pData->attenuation1);
6097	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
6098
6099	glLightf(GL_LIGHT0 + index, GL_QUADRATIC_ATTENUATION, (QuadAttenuation < pData->attenuation2) ? pData->attenuation2 : QuadAttenuation);
6100	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
6101
6102	/** @todo range */
6103	break;
6104	}
6105
6106	case SVGA3D_LIGHTTYPE_SPOT1:
6107	{
6108	GLfloat exponent;
6109	GLfloat position[4];
6110	const GLfloat pi = 4.0f * atanf(1.0f);
6111
6112	position[0] = pData->position[0];
6113	position[1] = pData->position[1];
6114	position[2] = pData->position[2];
6115	position[3] = 1.0f;
6116
6117	glLightfv(GL_LIGHT0 + index, GL_POSITION, position);
6118	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
6119
6120	position[0] = pData->direction[0];
6121	position[1] = pData->direction[1];
6122	position[2] = pData->direction[2];
6123	position[3] = 1.0f;
6124
6125	glLightfv(GL_LIGHT0 + index, GL_SPOT_DIRECTION, position);
6126	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
6127
6128	/*
6129	* opengl-ish and d3d-ish spot lights use too different models for the
6130	* light "intensity" as a function of the angle towards the main light direction,
6131	* so we only can approximate very roughly.
6132	* however spot lights are rather rarely used in games (if ever used at all).
6133	* furthermore if still used, probably nobody pays attention to such details.
6134	*/
6135	if (pData->falloff == 0)
6136	{
6137	/* Falloff = 0 is easy, because d3d's and opengl's spot light equations have the
6138	* falloff resp. exponent parameter as an exponent, so the spot light lighting
6139	* will always be 1.0 for both of them, and we don't have to care for the
6140	* rest of the rather complex calculation
6141	*/
6142	exponent = 0.0f;
6143	}
6144	else
6145	{
6146	float rho = pData->theta + (pData->phi - pData->theta) / (2 * pData->falloff);
6147	if (rho < 0.0001f)
6148	rho = 0.0001f;
6149	exponent = -0.3f/log(cos(rho/2));
6150	}
6151	if (exponent > 128.0f)
6152	exponent = 128.0f;
6153
6154	glLightf(GL_LIGHT0 + index, GL_SPOT_EXPONENT, exponent);
6155	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
6156
6157	glLightf(GL_LIGHT0 + index, GL_SPOT_CUTOFF, pData->phi * 90.0 / pi);
6158	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
6159
6160	/* Attenuation - Are these right? guessing... */
6161	glLightf(GL_LIGHT0 + index, GL_CONSTANT_ATTENUATION, pData->attenuation0);
6162	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
6163
6164	glLightf(GL_LIGHT0 + index, GL_LINEAR_ATTENUATION, pData->attenuation1);
6165	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
6166
6167	glLightf(GL_LIGHT0 + index, GL_QUADRATIC_ATTENUATION, (QuadAttenuation < pData->attenuation2) ? pData->attenuation2 : QuadAttenuation);
6168	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
6169
6170	/** @todo range */
6171	break;
6172	}
6173
6174	case SVGA3D_LIGHTTYPE_DIRECTIONAL:
6175	{
6176	GLfloat position[4];
6177
6178	position[0] = -pData->direction[0];
6179	position[1] = -pData->direction[1];
6180	position[2] = -pData->direction[2];
6181	position[3] = 0.0f;
6182
6183	glLightfv(GL_LIGHT0 + index, GL_POSITION, position); /* Note gl uses w position of 0 for direction! */
6184	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
6185
6186	glLightf(GL_LIGHT0 + index, GL_SPOT_CUTOFF, 180.0f);
6187	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
6188
6189	glLightf(GL_LIGHT0 + index, GL_SPOT_EXPONENT, 0.0f);
6190	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
6191	break;
6192	}
6193
6194	case SVGA3D_LIGHTTYPE_SPOT2:
6195	default:
6196	Log(("Unsupported light type!!\n"));
6197	rc = VERR_INVALID_PARAMETER;
6198	break;
6199	}
6200
6201	/* Restore the modelview matrix */
6202	glPopMatrix();
6203
6204	return rc;
6205	}
6206
6207	static DECLCALLBACK(int) vmsvga3dBackSetLightEnabled(PVGASTATECC pThisCC, uint32_t cid, uint32_t index, uint32_t enabled)
6208	{
6209	PVMSVGA3DSTATE pState = pThisCC->svga.p3dState;
6210	AssertReturn(pState, VERR_NO_MEMORY);
6211
6212	LogFunc(("cid=%u %d -> %d\n", cid, index, enabled));
6213
6214	PVMSVGA3DCONTEXT pContext;
6215	int rc = vmsvga3dContextFromCid(pState, cid, &pContext);
6216	AssertRCReturn(rc, rc);
6217
6218	VMSVGA3D_SET_CURRENT_CONTEXT(pState, pContext);
6219
6220	/* Store for vm state save/restore */
6221	if (index < SVGA3D_MAX_LIGHTS)
6222	pContext->state.aLightData[index].fEnabled = !!enabled;
6223	else
6224	AssertFailed();
6225
6226	if (enabled)
6227	{
6228	if (index < SVGA3D_MAX_LIGHTS)
6229	{
6230	/* Load the default settings if none have been set yet. */
6231	if (!pContext->state.aLightData[index].fValidData)
6232	vmsvga3dBackSetLightData(pThisCC, cid, index, (SVGA3dLightData *)&vmsvga3d_default_light);
6233	}
6234	glEnable(GL_LIGHT0 + index);
6235	}
6236	else
6237	glDisable(GL_LIGHT0 + index);
6238
6239	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
6240	return VINF_SUCCESS;
6241	}
6242
6243	static DECLCALLBACK(int) vmsvga3dBackSetViewPort(PVGASTATECC pThisCC, uint32_t cid, SVGA3dRect *pRect)
6244	{
6245	PVMSVGA3DSTATE pState = pThisCC->svga.p3dState;
6246	AssertReturn(pState, VERR_NO_MEMORY);
6247
6248	Log(("vmsvga3dSetViewPort cid=%u (%d,%d)(%d,%d)\n", cid, pRect->x, pRect->y, pRect->w, pRect->h));
6249
6250	PVMSVGA3DCONTEXT pContext;
6251	int rc = vmsvga3dContextFromCid(pState, cid, &pContext);
6252	AssertRCReturn(rc, rc);
6253
6254	VMSVGA3D_SET_CURRENT_CONTEXT(pState, pContext);
6255
6256	/* Save for vm state save/restore. */
6257	pContext->state.RectViewPort = *pRect;
6258	pContext->state.u32UpdateFlags \|= VMSVGA3D_UPDATE_VIEWPORT;
6259
6260	/** @todo y-inversion for partial viewport coordinates? */
6261	glViewport(pRect->x, pRect->y, pRect->w, pRect->h);
6262	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
6263
6264	/* Reset the projection matrix as that relies on the viewport setting. */
6265	if (pContext->state.aTransformState[SVGA3D_TRANSFORM_PROJECTION].fValid == true)
6266	vmsvga3dBackSetTransform(pThisCC, cid, SVGA3D_TRANSFORM_PROJECTION,
6267	pContext->state.aTransformState[SVGA3D_TRANSFORM_PROJECTION].matrix);
6268	else
6269	{
6270	float matrix[16];
6271
6272	/* identity matrix if no matrix set. */
6273	memset(matrix, 0, sizeof(matrix));
6274	matrix[0] = 1.0;
6275	matrix[5] = 1.0;
6276	matrix[10] = 1.0;
6277	matrix[15] = 1.0;
6278	vmsvga3dBackSetTransform(pThisCC, cid, SVGA3D_TRANSFORM_PROJECTION, matrix);
6279	}
6280
6281	return VINF_SUCCESS;
6282	}
6283
6284	static DECLCALLBACK(int) vmsvga3dBackSetClipPlane(PVGASTATECC pThisCC, uint32_t cid, uint32_t index, float plane[4])
6285	{
6286	PVMSVGA3DSTATE pState = pThisCC->svga.p3dState;
6287	AssertReturn(pState, VERR_NO_MEMORY);
6288	double oglPlane[4];
6289
6290	Log(("vmsvga3dSetClipPlane cid=%u %d (%d,%d)(%d,%d)\n", cid, index, (unsigned)(plane[0] * 100.0), (unsigned)(plane[1] * 100.0), (unsigned)(plane[2] * 100.0), (unsigned)(plane[3] * 100.0)));
6291	AssertReturn(index < SVGA3D_NUM_CLIPPLANES, VERR_INVALID_PARAMETER);
6292
6293	PVMSVGA3DCONTEXT pContext;
6294	int rc = vmsvga3dContextFromCid(pState, cid, &pContext);
6295	AssertRCReturn(rc, rc);
6296
6297	VMSVGA3D_SET_CURRENT_CONTEXT(pState, pContext);
6298
6299	/* Store for vm state save/restore. */
6300	pContext->state.aClipPlane[index].fValid = true;
6301	memcpy(pContext->state.aClipPlane[index].plane, plane, sizeof(pContext->state.aClipPlane[index].plane));
6302
6303	/** @todo clip plane affected by model view in OpenGL & view in D3D + vertex shader -> not transformed (see Wine; state.c clipplane) */
6304	oglPlane[0] = (double)plane[0];
6305	oglPlane[1] = (double)plane[1];
6306	oglPlane[2] = (double)plane[2];
6307	oglPlane[3] = (double)plane[3];
6308
6309	glClipPlane(GL_CLIP_PLANE0 + index, oglPlane);
6310	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
6311
6312	return VINF_SUCCESS;
6313	}
6314
6315	static DECLCALLBACK(int) vmsvga3dBackSetScissorRect(PVGASTATECC pThisCC, uint32_t cid, SVGA3dRect *pRect)
6316	{
6317	PVMSVGA3DSTATE pState = pThisCC->svga.p3dState;
6318	AssertReturn(pState, VERR_NO_MEMORY);
6319
6320	Log(("vmsvga3dSetScissorRect cid=%u (%d,%d)(%d,%d)\n", cid, pRect->x, pRect->y, pRect->w, pRect->h));
6321
6322	PVMSVGA3DCONTEXT pContext;
6323	int rc = vmsvga3dContextFromCid(pState, cid, &pContext);
6324	AssertRCReturn(rc, rc);
6325
6326	VMSVGA3D_SET_CURRENT_CONTEXT(pState, pContext);
6327
6328	/* Store for vm state save/restore. */
6329	pContext->state.u32UpdateFlags \|= VMSVGA3D_UPDATE_SCISSORRECT;
6330	pContext->state.RectScissor = *pRect;
6331
6332	glScissor(pRect->x, pRect->y, pRect->w, pRect->h);
6333	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
6334
6335	return VINF_SUCCESS;
6336	}
6337
6338	static void vmsvgaColor2GLFloatArray(uint32_t color, GLfloat pRed, GLfloat pGreen, GLfloat pBlue, GLfloat pAlpha)
6339	{
6340	/* Convert byte color components to float (0-1.0) */
6341	*pAlpha = (GLfloat)(color >> 24) / 255.0;
6342	*pRed = (GLfloat)((color >> 16) & 0xff) / 255.0;
6343	*pGreen = (GLfloat)((color >> 8) & 0xff) / 255.0;
6344	*pBlue = (GLfloat)(color & 0xff) / 255.0;
6345	}
6346
6347	static DECLCALLBACK(int) vmsvga3dBackCommandClear(PVGASTATECC pThisCC, uint32_t cid, SVGA3dClearFlag clearFlag, uint32_t color, float depth, uint32_t stencil,
6348	uint32_t cRects, SVGA3dRect *pRect)
6349	{
6350	GLbitfield mask = 0;
6351	GLbitfield restoreMask = 0;
6352	PVMSVGA3DSTATE pState = pThisCC->svga.p3dState;
6353	AssertReturn(pState, VERR_NO_MEMORY);
6354	GLboolean fDepthWriteEnabled = GL_FALSE;
6355	GLboolean afColorWriteEnabled[4] = { GL_FALSE, GL_FALSE, GL_FALSE, GL_FALSE };
6356
6357	Log(("vmsvga3dCommandClear cid=%u clearFlag=%x color=%x depth=%d stencil=%x cRects=%d\n", cid, clearFlag, color, (uint32_t)(depth * 100.0), stencil, cRects));
6358
6359	PVMSVGA3DCONTEXT pContext;
6360	int rc = vmsvga3dContextFromCid(pState, cid, &pContext);
6361	AssertRCReturn(rc, rc);
6362
6363	VMSVGA3D_SET_CURRENT_CONTEXT(pState, pContext);
6364
6365	if (clearFlag & SVGA3D_CLEAR_COLOR)
6366	{
6367	GLfloat red, green, blue, alpha;
6368	vmsvgaColor2GLFloatArray(color, &red, &green, &blue, &alpha);
6369
6370	/* Set the color clear value. */
6371	glClearColor(red, green, blue, alpha);
6372	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
6373
6374	mask \|= GL_COLOR_BUFFER_BIT;
6375
6376	/* glClear will not clear the color buffer if writing is disabled. */
6377	glGetBooleanv(GL_COLOR_WRITEMASK, afColorWriteEnabled);
6378	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
6379	if ( afColorWriteEnabled[0] == GL_FALSE
6380	\|\| afColorWriteEnabled[1] == GL_FALSE
6381	\|\| afColorWriteEnabled[2] == GL_FALSE
6382	\|\| afColorWriteEnabled[3] == GL_FALSE)
6383	{
6384	glColorMask(GL_TRUE, GL_TRUE, GL_TRUE, GL_TRUE);
6385	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
6386
6387	restoreMask \|= GL_COLOR_BUFFER_BIT;
6388	}
6389
6390	}
6391
6392	if (clearFlag & SVGA3D_CLEAR_STENCIL)
6393	{
6394	/** @todo possibly the same problem as with glDepthMask */
6395	glClearStencil(stencil);
6396	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
6397
6398	mask \|= GL_STENCIL_BUFFER_BIT;
6399	}
6400
6401	if (clearFlag & SVGA3D_CLEAR_DEPTH)
6402	{
6403	glClearDepth((GLdouble)depth);
6404	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
6405
6406	mask \|= GL_DEPTH_BUFFER_BIT;
6407
6408	/* glClear will not clear the depth buffer if writing is disabled. */
6409	glGetBooleanv(GL_DEPTH_WRITEMASK, &fDepthWriteEnabled);
6410	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
6411	if (fDepthWriteEnabled == GL_FALSE)
6412	{
6413	glDepthMask(GL_TRUE);
6414	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
6415
6416	restoreMask \|= GL_DEPTH_BUFFER_BIT;
6417	}
6418	}
6419
6420	/* Save the current scissor test bit and scissor box. */
6421	glPushAttrib(GL_SCISSOR_BIT);
6422	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
6423
6424	if (cRects)
6425	{
6426	glEnable(GL_SCISSOR_TEST);
6427	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
6428
6429	for (uint32_t i = 0; i < cRects; ++i)
6430	{
6431	LogFunc(("rect [%d] %d,%d %dx%d)\n", i, pRect[i].x, pRect[i].y, pRect[i].w, pRect[i].h));
6432	glScissor(pRect[i].x, pRect[i].y, pRect[i].w, pRect[i].h);
6433	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
6434
6435	glClear(mask);
6436	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
6437	}
6438	}
6439	else
6440	{
6441	glDisable(GL_SCISSOR_TEST);
6442	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
6443
6444	glClear(mask);
6445	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
6446	}
6447
6448	/* Restore the old scissor test bit and box */
6449	glPopAttrib();
6450	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
6451
6452	/* Restore the write states. */
6453	if (restoreMask & GL_COLOR_BUFFER_BIT)
6454	{
6455	glColorMask(afColorWriteEnabled[0],
6456	afColorWriteEnabled[1],
6457	afColorWriteEnabled[2],
6458	afColorWriteEnabled[3]);
6459	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
6460	}
6461
6462	if (restoreMask & GL_DEPTH_BUFFER_BIT)
6463	{
6464	glDepthMask(fDepthWriteEnabled);
6465	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
6466	}
6467
6468	return VINF_SUCCESS;
6469	}
6470
6471	/* Convert VMWare vertex declaration to its OpenGL equivalent. */
6472	int vmsvga3dVertexDecl2OGL(SVGA3dVertexArrayIdentity &identity, GLint &size, GLenum &type, GLboolean &normalized, uint32_t &cbAttrib)
6473	{
6474	normalized = GL_FALSE;
6475	switch (identity.type)
6476	{
6477	case SVGA3D_DECLTYPE_FLOAT1:
6478	size = 1;
6479	type = GL_FLOAT;
6480	cbAttrib = sizeof(float);
6481	break;
6482	case SVGA3D_DECLTYPE_FLOAT2:
6483	size = 2;
6484	type = GL_FLOAT;
6485	cbAttrib = 2 * sizeof(float);
6486	break;
6487	case SVGA3D_DECLTYPE_FLOAT3:
6488	size = 3;
6489	type = GL_FLOAT;
6490	cbAttrib = 3 * sizeof(float);
6491	break;
6492	case SVGA3D_DECLTYPE_FLOAT4:
6493	size = 4;
6494	type = GL_FLOAT;
6495	cbAttrib = 4 * sizeof(float);
6496	break;
6497
6498	case SVGA3D_DECLTYPE_D3DCOLOR:
6499	size = GL_BGRA; /* @note requires GL_ARB_vertex_array_bgra */
6500	type = GL_UNSIGNED_BYTE;
6501	normalized = GL_TRUE; /* glVertexAttribPointer fails otherwise */
6502	cbAttrib = sizeof(uint32_t);
6503	break;
6504
6505	case SVGA3D_DECLTYPE_UBYTE4N:
6506	normalized = GL_TRUE;
6507	RT_FALL_THRU();
6508	case SVGA3D_DECLTYPE_UBYTE4:
6509	size = 4;
6510	type = GL_UNSIGNED_BYTE;
6511	cbAttrib = sizeof(uint32_t);
6512	break;
6513
6514	case SVGA3D_DECLTYPE_SHORT2N:
6515	normalized = GL_TRUE;
6516	RT_FALL_THRU();
6517	case SVGA3D_DECLTYPE_SHORT2:
6518	size = 2;
6519	type = GL_SHORT;
6520	cbAttrib = 2 * sizeof(uint16_t);
6521	break;
6522
6523	case SVGA3D_DECLTYPE_SHORT4N:
6524	normalized = GL_TRUE;
6525	RT_FALL_THRU();
6526	case SVGA3D_DECLTYPE_SHORT4:
6527	size = 4;
6528	type = GL_SHORT;
6529	cbAttrib = 4 * sizeof(uint16_t);
6530	break;
6531
6532	case SVGA3D_DECLTYPE_USHORT4N:
6533	normalized = GL_TRUE;
6534	size = 4;
6535	type = GL_UNSIGNED_SHORT;
6536	cbAttrib = 4 * sizeof(uint16_t);
6537	break;
6538
6539	case SVGA3D_DECLTYPE_USHORT2N:
6540	normalized = GL_TRUE;
6541	size = 2;
6542	type = GL_UNSIGNED_SHORT;
6543	cbAttrib = 2 * sizeof(uint16_t);
6544	break;
6545
6546	case SVGA3D_DECLTYPE_UDEC3:
6547	size = 3;
6548	type = GL_UNSIGNED_INT_2_10_10_10_REV; /** @todo correct? */
6549	cbAttrib = sizeof(uint32_t);
6550	break;
6551
6552	case SVGA3D_DECLTYPE_DEC3N:
6553	normalized = true;
6554	size = 3;
6555	type = GL_INT_2_10_10_10_REV; /** @todo correct? */
6556	cbAttrib = sizeof(uint32_t);
6557	break;
6558
6559	case SVGA3D_DECLTYPE_FLOAT16_2:
6560	size = 2;
6561	type = GL_HALF_FLOAT;
6562	cbAttrib = 2 * sizeof(uint16_t);
6563	break;
6564	case SVGA3D_DECLTYPE_FLOAT16_4:
6565	size = 4;
6566	type = GL_HALF_FLOAT;
6567	cbAttrib = 4 * sizeof(uint16_t);
6568	break;
6569	default:
6570	AssertFailedReturn(VERR_INVALID_PARAMETER);
6571	}
6572
6573	//pVertexElement->Method = identity.method;
6574	//pVertexElement->Usage = identity.usage;
6575
6576	return VINF_SUCCESS;
6577	}
6578
6579	static float vmsvga3dFloat16To32(uint16_t f16)
6580	{
6581	/* From Wiki */
6582	#ifndef INFINITY
6583	static uint32_t const sBitsINFINITY = UINT32_C(0x7f800000);
6584	#define INFINITY ((float const )&sBitsINFINITY)
6585	#endif
6586	#ifndef NAN
6587	static uint32_t const sBitsNAN = UINT32_C(0x7fc00000);
6588	#define NAN ((float const )&sBitsNAN)
6589	#endif
6590
6591	uint16_t const s = (f16 >> UINT16_C(15)) & UINT16_C(0x1);
6592	uint16_t const e = (f16 >> UINT16_C(10)) & UINT16_C(0x1f);
6593	uint16_t const m = (f16 ) & UINT16_C(0x3ff);
6594
6595	float result = s ? 1.0f : -1.0f;
6596	if (e == 0)
6597	{
6598	if (m == 0)
6599	result = 0.0f; / zero, -0 */
6600	else
6601	result = (float)m / 1024.0f / 16384.0f; / subnormal numbers: sign * 2^-14 * 0.m */
6602	}
6603	else if (e == 0x1f)
6604	{
6605	if (m == 0)
6606	result = INFINITY; / +-infinity */
6607	else
6608	result = NAN; /* NAN */
6609	}
6610	else
6611	{
6612	result = powf(2.0f, (float)e - 15.0f) (1.0f + (float)m / 1024.0f); /* sign * 2^(e-15) * 1.m */
6613	}
6614
6615	return result;
6616	}
6617
6618	/* Set a vertex attribute according to VMSVGA vertex declaration. */
6619	static int vmsvga3dSetVertexAttrib(PVMSVGA3DSTATE pState, GLuint index, SVGA3dVertexArrayIdentity const pIdentity, GLvoid const pv)
6620	{
6621	switch (pIdentity->type)
6622	{
6623	case SVGA3D_DECLTYPE_FLOAT1:
6624	{
6625	/* "One-component float expanded to (float, 0, 0, 1)." */
6626	GLfloat const p = (GLfloat )pv;
6627	GLfloat const v[4] = { p[0], 0.0f, 0.0f, 1.0f };
6628	pState->ext.glVertexAttrib4fv(index, v);
6629	break;
6630	}
6631	case SVGA3D_DECLTYPE_FLOAT2:
6632	{
6633	/* "Two-component float expanded to (float, float, 0, 1)." */
6634	GLfloat const p = (GLfloat )pv;
6635	GLfloat const v[4] = { p[0], p[1], 0.0f, 1.0f };
6636	pState->ext.glVertexAttrib4fv(index, v);
6637	break;
6638	}
6639	case SVGA3D_DECLTYPE_FLOAT3:
6640	{
6641	/* "Three-component float expanded to (float, float, float, 1)." */
6642	GLfloat const p = (GLfloat )pv;
6643	GLfloat const v[4] = { p[0], p[1], p[2], 1.0f };
6644	pState->ext.glVertexAttrib4fv(index, v);
6645	break;
6646	}
6647	case SVGA3D_DECLTYPE_FLOAT4:
6648	pState->ext.glVertexAttrib4fv(index, (GLfloat const *)pv);
6649	break;
6650	case SVGA3D_DECLTYPE_D3DCOLOR:
6651	/** @todo Need to swap bytes? */
6652	pState->ext.glVertexAttrib4Nubv(index, (GLubyte const *)pv);
6653	break;
6654	case SVGA3D_DECLTYPE_UBYTE4:
6655	pState->ext.glVertexAttrib4ubv(index, (GLubyte const *)pv);
6656	break;
6657	case SVGA3D_DECLTYPE_SHORT2:
6658	{
6659	/* "Two-component, signed short expanded to (value, value, 0, 1)." */
6660	GLshort const p = (GLshort const )pv;
6661	GLshort const v[4] = { p[0], p[1], 0, 1 };
6662	pState->ext.glVertexAttrib4sv(index, v);
6663	break;
6664	}
6665	case SVGA3D_DECLTYPE_SHORT4:
6666	pState->ext.glVertexAttrib4sv(index, (GLshort const *)pv);
6667	break;
6668	case SVGA3D_DECLTYPE_UBYTE4N:
6669	pState->ext.glVertexAttrib4Nubv(index, (GLubyte const *)pv);
6670	break;
6671	case SVGA3D_DECLTYPE_SHORT2N:
6672	{
6673	/* "Normalized, two-component, signed short, expanded to (first short/32767.0, second short/32767.0, 0, 1)." */
6674	GLshort const p = (GLshort const )pv;
6675	GLshort const v[4] = { p[0], p[1], 0, 1 };
6676	pState->ext.glVertexAttrib4Nsv(index, v);
6677	break;
6678	}
6679	case SVGA3D_DECLTYPE_SHORT4N:
6680	pState->ext.glVertexAttrib4Nsv(index, (GLshort const *)pv);
6681	break;
6682	case SVGA3D_DECLTYPE_USHORT2N:
6683	{
6684	GLushort const p = (GLushort const )pv;
6685	GLushort const v[4] = { p[0], p[1], 0, 1 };
6686	pState->ext.glVertexAttrib4Nusv(index, v);
6687	break;
6688	}
6689	case SVGA3D_DECLTYPE_USHORT4N:
6690	pState->ext.glVertexAttrib4Nusv(index, (GLushort const *)pv);
6691	break;
6692	case SVGA3D_DECLTYPE_UDEC3:
6693	{
6694	/** @todo Test */
6695	/* "Three-component, unsigned, 10 10 10 format expanded to (value, value, value, 1)." */
6696	uint32_t const u32 = (uint32_t )pv;
6697	GLfloat const v[4] = { (float)(u32 & 0x3ff), (float)((u32 >> 10) & 0x3ff), (float)((u32 >> 20) & 0x3ff), 1.0f };
6698	pState->ext.glVertexAttrib4fv(index, v);
6699	break;
6700	}
6701	case SVGA3D_DECLTYPE_DEC3N:
6702	{
6703	/** @todo Test */
6704	/* "Three-component, signed, 10 10 10 format normalized and expanded to (v[0]/511.0, v[1]/511.0, v[2]/511.0, 1)." */
6705	uint32_t const u32 = (uint32_t )pv;
6706	GLfloat const v[4] = { (u32 & 0x3ff) / 511.0f, ((u32 >> 10) & 0x3ff) / 511.0f, ((u32 >> 20) & 0x3ff) / 511.0f, 1.0f };
6707	pState->ext.glVertexAttrib4fv(index, v);
6708	break;
6709	}
6710	case SVGA3D_DECLTYPE_FLOAT16_2:
6711	{
6712	/** @todo Test */
6713	/* "Two-component, 16-bit, floating point expanded to (value, value, 0, 1)." */
6714	uint16_t const p = (uint16_t )pv;
6715	GLfloat const v[4] = { vmsvga3dFloat16To32(p[0]), vmsvga3dFloat16To32(p[1]), 0.0f, 1.0f };
6716	pState->ext.glVertexAttrib4fv(index, v);
6717	break;
6718	}
6719	case SVGA3D_DECLTYPE_FLOAT16_4:
6720	{
6721	/** @todo Test */
6722	uint16_t const p = (uint16_t )pv;
6723	GLfloat const v[4] = { vmsvga3dFloat16To32(p[0]), vmsvga3dFloat16To32(p[1]),
6724	vmsvga3dFloat16To32(p[2]), vmsvga3dFloat16To32(p[3]) };
6725	pState->ext.glVertexAttrib4fv(index, v);
6726	break;
6727	}
6728	default:
6729	AssertFailedReturn(VERR_INVALID_PARAMETER);
6730	}
6731
6732	return VINF_SUCCESS;
6733	}
6734
6735	/* Convert VMWare primitive type to its OpenGL equivalent. */
6736	/* Calculate the vertex count based on the primitive type and nr of primitives. */
6737	int vmsvga3dPrimitiveType2OGL(SVGA3dPrimitiveType PrimitiveType, GLenum pMode, uint32_t cPrimitiveCount, uint32_t pcVertices)
6738	{
6739	switch (PrimitiveType)
6740	{
6741	case SVGA3D_PRIMITIVE_TRIANGLELIST:
6742	*pMode = GL_TRIANGLES;
6743	pcVertices = cPrimitiveCount 3;
6744	break;
6745	case SVGA3D_PRIMITIVE_POINTLIST:
6746	*pMode = GL_POINTS;
6747	*pcVertices = cPrimitiveCount;
6748	break;
6749	case SVGA3D_PRIMITIVE_LINELIST:
6750	*pMode = GL_LINES;
6751	pcVertices = cPrimitiveCount 2;
6752	break;
6753	case SVGA3D_PRIMITIVE_LINESTRIP:
6754	*pMode = GL_LINE_STRIP;
6755	*pcVertices = cPrimitiveCount + 1;
6756	break;
6757	case SVGA3D_PRIMITIVE_TRIANGLESTRIP:
6758	*pMode = GL_TRIANGLE_STRIP;
6759	*pcVertices = cPrimitiveCount + 2;
6760	break;
6761	case SVGA3D_PRIMITIVE_TRIANGLEFAN:
6762	*pMode = GL_TRIANGLE_FAN;
6763	*pcVertices = cPrimitiveCount + 2;
6764	break;
6765	default:
6766	return VERR_INVALID_PARAMETER;
6767	}
6768	return VINF_SUCCESS;
6769	}
6770
6771	static int vmsvga3dResetTransformMatrices(PVGASTATECC pThisCC, PVMSVGA3DCONTEXT pContext)
6772	{
6773	int rc;
6774
6775	/* Reset the view matrix (also takes the world matrix into account). */
6776	if (pContext->state.aTransformState[SVGA3D_TRANSFORM_VIEW].fValid == true)
6777	rc = vmsvga3dBackSetTransform(pThisCC, pContext->id, SVGA3D_TRANSFORM_VIEW,
6778	pContext->state.aTransformState[SVGA3D_TRANSFORM_VIEW].matrix);
6779	else
6780	{
6781	float matrix[16];
6782
6783	/* identity matrix if no matrix set. */
6784	memset(matrix, 0, sizeof(matrix));
6785	matrix[0] = 1.0;
6786	matrix[5] = 1.0;
6787	matrix[10] = 1.0;
6788	matrix[15] = 1.0;
6789	rc = vmsvga3dBackSetTransform(pThisCC, pContext->id, SVGA3D_TRANSFORM_VIEW, matrix);
6790	}
6791
6792	/* Reset the projection matrix. */
6793	if (pContext->state.aTransformState[SVGA3D_TRANSFORM_PROJECTION].fValid == true)
6794	{
6795	rc = vmsvga3dBackSetTransform(pThisCC, pContext->id, SVGA3D_TRANSFORM_PROJECTION, pContext->state.aTransformState[SVGA3D_TRANSFORM_PROJECTION].matrix);
6796	}
6797	else
6798	{
6799	float matrix[16];
6800
6801	/* identity matrix if no matrix set. */
6802	memset(matrix, 0, sizeof(matrix));
6803	matrix[0] = 1.0;
6804	matrix[5] = 1.0;
6805	matrix[10] = 1.0;
6806	matrix[15] = 1.0;
6807	rc = vmsvga3dBackSetTransform(pThisCC, pContext->id, SVGA3D_TRANSFORM_PROJECTION, matrix);
6808	}
6809	AssertRC(rc);
6810	return rc;
6811	}
6812
6813	static int vmsvga3dDrawPrimitivesProcessVertexDecls(PVGASTATECC pThisCC, PVMSVGA3DCONTEXT pContext,
6814	uint32_t iVertexDeclBase, uint32_t numVertexDecls,
6815	SVGA3dVertexDecl *pVertexDecl,
6816	SVGA3dVertexDivisor const *paVertexDivisors)
6817	{
6818	PVMSVGA3DSTATE pState = pThisCC->svga.p3dState;
6819	unsigned const sidVertex = pVertexDecl[0].array.surfaceId;
6820
6821	PVMSVGA3DSURFACE pVertexSurface;
6822	int rc = vmsvga3dSurfaceFromSid(pState, sidVertex, &pVertexSurface);
6823	AssertRCReturn(rc, rc);
6824
6825	Log(("vmsvga3dDrawPrimitives: vertex surface sid=%u\n", sidVertex));
6826
6827	/* Create and/or bind the vertex buffer. */
6828	if (pVertexSurface->oglId.buffer == OPENGL_INVALID_ID)
6829	{
6830	Log(("vmsvga3dDrawPrimitives: create vertex buffer fDirty=%d size=%x bytes\n", pVertexSurface->fDirty, pVertexSurface->paMipmapLevels[0].cbSurface));
6831	PVMSVGA3DCONTEXT pSavedCtx = pContext;
6832	pContext = &pState->SharedCtx;
6833	VMSVGA3D_SET_CURRENT_CONTEXT(pState, pContext);
6834
6835	pState->ext.glGenBuffers(1, &pVertexSurface->oglId.buffer);
6836	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
6837	pVertexSurface->enmOGLResType = VMSVGA3D_OGLRESTYPE_BUFFER;
6838
6839	pState->ext.glBindBuffer(GL_ARRAY_BUFFER, pVertexSurface->oglId.buffer);
6840	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
6841
6842	Assert(pVertexSurface->fDirty);
6843	/** @todo rethink usage dynamic/static */
6844	pState->ext.glBufferData(GL_ARRAY_BUFFER, pVertexSurface->paMipmapLevels[0].cbSurface, pVertexSurface->paMipmapLevels[0].pSurfaceData, GL_DYNAMIC_DRAW);
6845	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
6846
6847	pVertexSurface->paMipmapLevels[0].fDirty = false;
6848	pVertexSurface->fDirty = false;
6849
6850	pVertexSurface->f.s.surface1Flags \|= SVGA3D_SURFACE_HINT_VERTEXBUFFER;
6851
6852	pState->ext.glBindBuffer(GL_ARRAY_BUFFER, OPENGL_INVALID_ID);
6853	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
6854
6855	pContext = pSavedCtx;
6856	VMSVGA3D_SET_CURRENT_CONTEXT(pState, pContext);
6857	}
6858
6859	Assert(pVertexSurface->fDirty == false);
6860	pState->ext.glBindBuffer(GL_ARRAY_BUFFER, pVertexSurface->oglId.buffer);
6861	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
6862
6863	/* Setup the vertex declarations. */
6864	for (unsigned iVertex = 0; iVertex < numVertexDecls; iVertex++)
6865	{
6866	GLint size;
6867	GLenum type;
6868	GLboolean normalized;
6869	uint32_t cbAttrib;
6870	GLuint index = iVertexDeclBase + iVertex;
6871
6872	Log(("vmsvga3dDrawPrimitives: array index %d type=%s (%d) method=%s (%d) usage=%s (%d) usageIndex=%d stride=%d offset=%d\n", index, vmsvgaDeclType2String(pVertexDecl[iVertex].identity.type), pVertexDecl[iVertex].identity.type, vmsvgaDeclMethod2String(pVertexDecl[iVertex].identity.method), pVertexDecl[iVertex].identity.method, vmsvgaDeclUsage2String(pVertexDecl[iVertex].identity.usage), pVertexDecl[iVertex].identity.usage, pVertexDecl[iVertex].identity.usageIndex, pVertexDecl[iVertex].array.stride, pVertexDecl[iVertex].array.offset));
6873
6874	rc = vmsvga3dVertexDecl2OGL(pVertexDecl[iVertex].identity, size, type, normalized, cbAttrib);
6875	AssertRCReturn(rc, rc);
6876
6877	ASSERT_GUEST_RETURN( pVertexSurface->paMipmapLevels[0].cbSurface >= pVertexDecl[iVertex].array.offset
6878	&& pVertexSurface->paMipmapLevels[0].cbSurface - pVertexDecl[iVertex].array.offset >= cbAttrib,
6879	VERR_INVALID_PARAMETER);
6880	RT_UNTRUSTED_VALIDATED_FENCE();
6881
6882	if (pContext->state.shidVertex != SVGA_ID_INVALID)
6883	{
6884	/* Use numbered vertex arrays (or attributes) when shaders are active. */
6885	if (pVertexDecl[iVertex].array.stride)
6886	{
6887	pState->ext.glEnableVertexAttribArray(index);
6888	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
6889	pState->ext.glVertexAttribPointer(index, size, type, normalized, pVertexDecl[iVertex].array.stride,
6890	(const GLvoid *)(uintptr_t)pVertexDecl[iVertex].array.offset);
6891	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
6892
6893	GLuint divisor = paVertexDivisors && paVertexDivisors[index].instanceData ? 1 : 0;
6894	pState->ext.glVertexAttribDivisor(index, divisor);
6895	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
6896
6897	/** @todo case SVGA3D_DECLUSAGE_COLOR: color component order not identical!! test GL_BGRA!! */
6898	}
6899	else
6900	{
6901	/*
6902	* D3D and OpenGL have a different meaning of value zero for the vertex array stride:
6903	* - D3D (VMSVGA): "use a zero stride to tell the runtime not to increment the vertex buffer offset."
6904	* - OpenGL: "If stride is 0, the generic vertex attributes are understood to be tightly packed in the array."
6905	* VMSVGA uses the D3D semantics.
6906	*
6907	* Use glVertexAttrib in order to tell OpenGL to reuse the zero stride attributes for each vertex.
6908	*/
6909	pState->ext.glDisableVertexAttribArray(index);
6910	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
6911
6912	const GLvoid v = (uint8_t )pVertexSurface->paMipmapLevels[0].pSurfaceData + pVertexDecl[iVertex].array.offset;
6913	vmsvga3dSetVertexAttrib(pState, index, &pVertexDecl[iVertex].identity, v);
6914	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
6915	}
6916	}
6917	else
6918	{
6919	if (pVertexDecl[iVertex].array.stride == 0)
6920	{
6921	/* Zero stride means that the attribute pointer must not be increased.
6922	* See comment about stride in vmsvga3dDrawPrimitives.
6923	*/
6924	LogRelMax(8, ("VMSVGA: Warning: zero stride array in fixed function pipeline\n"));
6925	AssertFailed();
6926	}
6927
6928	/* Use the predefined selection of vertex streams for the fixed pipeline. */
6929	switch (pVertexDecl[iVertex].identity.usage)
6930	{
6931	case SVGA3D_DECLUSAGE_POSITIONT:
6932	case SVGA3D_DECLUSAGE_POSITION:
6933	{
6934	glEnableClientState(GL_VERTEX_ARRAY);
6935	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
6936	glVertexPointer(size, type, pVertexDecl[iVertex].array.stride,
6937	(const GLvoid *)(uintptr_t)pVertexDecl[iVertex].array.offset);
6938	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
6939	break;
6940	}
6941	case SVGA3D_DECLUSAGE_BLENDWEIGHT:
6942	AssertFailed();
6943	break;
6944	case SVGA3D_DECLUSAGE_BLENDINDICES:
6945	AssertFailed();
6946	break;
6947	case SVGA3D_DECLUSAGE_NORMAL:
6948	glEnableClientState(GL_NORMAL_ARRAY);
6949	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
6950	glNormalPointer(type, pVertexDecl[iVertex].array.stride,
6951	(const GLvoid *)(uintptr_t)pVertexDecl[iVertex].array.offset);
6952	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
6953	break;
6954	case SVGA3D_DECLUSAGE_PSIZE:
6955	AssertFailed();
6956	break;
6957	case SVGA3D_DECLUSAGE_TEXCOORD:
6958	/* Specify the affected texture unit. */
6959	#if VBOX_VMSVGA3D_GL_HACK_LEVEL >= 0x103
6960	glClientActiveTexture(GL_TEXTURE0 + pVertexDecl[iVertex].identity.usageIndex);
6961	#else
6962	pState->ext.glClientActiveTexture(GL_TEXTURE0 + pVertexDecl[iVertex].identity.usageIndex);
6963	#endif
6964	glEnableClientState(GL_TEXTURE_COORD_ARRAY);
6965	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
6966	glTexCoordPointer(size, type, pVertexDecl[iVertex].array.stride,
6967	(const GLvoid *)(uintptr_t)pVertexDecl[iVertex].array.offset);
6968	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
6969	break;
6970	case SVGA3D_DECLUSAGE_TANGENT:
6971	AssertFailed();
6972	break;
6973	case SVGA3D_DECLUSAGE_BINORMAL:
6974	AssertFailed();
6975	break;
6976	case SVGA3D_DECLUSAGE_TESSFACTOR:
6977	AssertFailed();
6978	break;
6979	case SVGA3D_DECLUSAGE_COLOR: /** @todo color component order not identical!! test GL_BGRA!! */
6980	glEnableClientState(GL_COLOR_ARRAY);
6981	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
6982	glColorPointer(size, type, pVertexDecl[iVertex].array.stride,
6983	(const GLvoid *)(uintptr_t)pVertexDecl[iVertex].array.offset);
6984	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
6985	break;
6986	case SVGA3D_DECLUSAGE_FOG:
6987	glEnableClientState(GL_FOG_COORD_ARRAY);
6988	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
6989	pState->ext.glFogCoordPointer(type, pVertexDecl[iVertex].array.stride,
6990	(const GLvoid *)(uintptr_t)pVertexDecl[iVertex].array.offset);
6991	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
6992	break;
6993	case SVGA3D_DECLUSAGE_DEPTH:
6994	AssertFailed();
6995	break;
6996	case SVGA3D_DECLUSAGE_SAMPLE:
6997	AssertFailed();
6998	break;
6999	case SVGA3D_DECLUSAGE_MAX: AssertFailed(); break; /* shut up gcc */
7000	}
7001	}
7002
7003	#ifdef LOG_ENABLED
7004	if (pVertexDecl[iVertex].array.stride == 0)
7005	Log(("vmsvga3dDrawPrimitives: stride == 0! Can be valid\n"));
7006	#endif
7007	}
7008
7009	return VINF_SUCCESS;
7010	}
7011
7012	static int vmsvga3dDrawPrimitivesCleanupVertexDecls(PVGASTATECC pThisCC, PVMSVGA3DCONTEXT pContext, uint32_t iVertexDeclBase,
7013	uint32_t numVertexDecls, SVGA3dVertexDecl *pVertexDecl)
7014	{
7015	PVMSVGA3DSTATE pState = pThisCC->svga.p3dState;
7016
7017	/* Clean up the vertex declarations. */
7018	for (unsigned iVertex = 0; iVertex < numVertexDecls; iVertex++)
7019	{
7020	if (pVertexDecl[iVertex].identity.usage == SVGA3D_DECLUSAGE_POSITIONT)
7021	{
7022	/* Reset the transformation matrices in case of a switch back from pretransformed mode. */
7023	Log(("vmsvga3dDrawPrimitivesCleanupVertexDecls: reset world and projection matrices after transformation reset (pre-transformed -> transformed)\n"));
7024	vmsvga3dResetTransformMatrices(pThisCC, pContext);
7025	}
7026
7027	if (pContext->state.shidVertex != SVGA_ID_INVALID)
7028	{
7029	/* Use numbered vertex arrays when shaders are active. */
7030	pState->ext.glVertexAttribDivisor(iVertexDeclBase + iVertex, 0);
7031	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
7032	pState->ext.glDisableVertexAttribArray(iVertexDeclBase + iVertex);
7033	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
7034	}
7035	else
7036	{
7037	/* Use the predefined selection of vertex streams for the fixed pipeline. */
7038	switch (pVertexDecl[iVertex].identity.usage)
7039	{
7040	case SVGA3D_DECLUSAGE_POSITION:
7041	case SVGA3D_DECLUSAGE_POSITIONT:
7042	glDisableClientState(GL_VERTEX_ARRAY);
7043	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
7044	break;
7045	case SVGA3D_DECLUSAGE_BLENDWEIGHT:
7046	break;
7047	case SVGA3D_DECLUSAGE_BLENDINDICES:
7048	break;
7049	case SVGA3D_DECLUSAGE_NORMAL:
7050	glDisableClientState(GL_NORMAL_ARRAY);
7051	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
7052	break;
7053	case SVGA3D_DECLUSAGE_PSIZE:
7054	break;
7055	case SVGA3D_DECLUSAGE_TEXCOORD:
7056	/* Specify the affected texture unit. */
7057	#if VBOX_VMSVGA3D_GL_HACK_LEVEL >= 0x103
7058	glClientActiveTexture(GL_TEXTURE0 + pVertexDecl[iVertex].identity.usageIndex);
7059	#else
7060	pState->ext.glClientActiveTexture(GL_TEXTURE0 + pVertexDecl[iVertex].identity.usageIndex);
7061	#endif
7062	glDisableClientState(GL_TEXTURE_COORD_ARRAY);
7063	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
7064	break;
7065	case SVGA3D_DECLUSAGE_TANGENT:
7066	break;
7067	case SVGA3D_DECLUSAGE_BINORMAL:
7068	break;
7069	case SVGA3D_DECLUSAGE_TESSFACTOR:
7070	break;
7071	case SVGA3D_DECLUSAGE_COLOR: /** @todo color component order not identical!! */
7072	glDisableClientState(GL_COLOR_ARRAY);
7073	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
7074	break;
7075	case SVGA3D_DECLUSAGE_FOG:
7076	glDisableClientState(GL_FOG_COORD_ARRAY);
7077	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
7078	break;
7079	case SVGA3D_DECLUSAGE_DEPTH:
7080	break;
7081	case SVGA3D_DECLUSAGE_SAMPLE:
7082	break;
7083	case SVGA3D_DECLUSAGE_MAX: AssertFailed(); break; /* shut up gcc */
7084	}
7085	}
7086	}
7087	/* Unbind the vertex buffer after usage. */
7088	pState->ext.glBindBuffer(GL_ARRAY_BUFFER, 0);
7089	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
7090	return VINF_SUCCESS;
7091	}
7092
7093	static DECLCALLBACK(int) vmsvga3dBackDrawPrimitives(PVGASTATECC pThisCC, uint32_t cid, uint32_t numVertexDecls, SVGA3dVertexDecl *pVertexDecl,
7094	uint32_t numRanges, SVGA3dPrimitiveRange *pRange, uint32_t cVertexDivisor,
7095	SVGA3dVertexDivisor *pVertexDivisor)
7096	{
7097	PVMSVGA3DSTATE pState = pThisCC->svga.p3dState;
7098	AssertReturn(pState, VERR_INTERNAL_ERROR);
7099	uint32_t iCurrentVertex;
7100
7101	Log(("vmsvga3dDrawPrimitives cid=%u numVertexDecls=%d numRanges=%d, cVertexDivisor=%d\n", cid, numVertexDecls, numRanges, cVertexDivisor));
7102
7103	/* Caller already check these, but it cannot hurt to check again... */
7104	AssertReturn(numVertexDecls && numVertexDecls <= SVGA3D_MAX_VERTEX_ARRAYS, VERR_INVALID_PARAMETER);
7105	AssertReturn(numRanges && numRanges <= SVGA3D_MAX_DRAW_PRIMITIVE_RANGES, VERR_INVALID_PARAMETER);
7106	AssertReturn(!cVertexDivisor \|\| cVertexDivisor == numVertexDecls, VERR_INVALID_PARAMETER);
7107
7108	if (!cVertexDivisor)
7109	pVertexDivisor = NULL; /* Be sure. */
7110
7111	PVMSVGA3DCONTEXT pContext;
7112	int rc = vmsvga3dContextFromCid(pState, cid, &pContext);
7113	AssertRCReturn(rc, rc);
7114
7115	VMSVGA3D_SET_CURRENT_CONTEXT(pState, pContext);
7116
7117	/* Check for pretransformed vertex declarations. */
7118	for (unsigned iVertex = 0; iVertex < numVertexDecls; iVertex++)
7119	{
7120	switch (pVertexDecl[iVertex].identity.usage)
7121	{
7122	case SVGA3D_DECLUSAGE_POSITIONT:
7123	Log(("ShaderSetPositionTransformed: (%d,%d)\n", pContext->state.RectViewPort.w, pContext->state.RectViewPort.h));
7124	RT_FALL_THRU();
7125	case SVGA3D_DECLUSAGE_POSITION:
7126	ShaderSetPositionTransformed(pContext->pShaderContext, pContext->state.RectViewPort.w,
7127	pContext->state.RectViewPort.h,
7128	pVertexDecl[iVertex].identity.usage == SVGA3D_DECLUSAGE_POSITIONT);
7129	break;
7130	default: /* Shut up MSC. */ break;
7131	}
7132	}
7133
7134	/* Flush any shader changes; after (!) checking the vertex declarations to deal with pre-transformed vertices. */
7135	if (pContext->pShaderContext)
7136	{
7137	uint32_t rtHeight = 0;
7138
7139	if (pContext->state.aRenderTargets[SVGA3D_RT_COLOR0] != SVGA_ID_INVALID)
7140	{
7141	PVMSVGA3DSURFACE pRenderTarget;
7142	rc = vmsvga3dSurfaceFromSid(pState, pContext->state.aRenderTargets[SVGA3D_RT_COLOR0], &pRenderTarget);
7143	AssertRCReturn(rc, rc);
7144
7145	rtHeight = pRenderTarget->paMipmapLevels[0].mipmapSize.height;
7146	}
7147
7148	ShaderUpdateState(pContext->pShaderContext, rtHeight);
7149	}
7150
7151	/* Try to figure out if instancing is used.
7152	* Support simple instancing case with one set of indexed data and one set per-instance data.
7153	*/
7154	uint32_t cInstances = 0;
7155	for (uint32_t iVertexDivisor = 0; iVertexDivisor < cVertexDivisor; ++iVertexDivisor)
7156	{
7157	if (pVertexDivisor[iVertexDivisor].indexedData)
7158	{
7159	if (cInstances == 0)
7160	cInstances = pVertexDivisor[iVertexDivisor].count;
7161	else
7162	Assert(cInstances == pVertexDivisor[iVertexDivisor].count);
7163	}
7164	else if (pVertexDivisor[iVertexDivisor].instanceData)
7165	{
7166	Assert(pVertexDivisor[iVertexDivisor].count == 1);
7167	}
7168	}
7169
7170	/* Process all vertex declarations. Each vertex buffer is represented by one stream. */
7171	iCurrentVertex = 0;
7172	while (iCurrentVertex < numVertexDecls)
7173	{
7174	uint32_t sidVertex = SVGA_ID_INVALID;
7175	uint32_t iVertex;
7176
7177	for (iVertex = iCurrentVertex; iVertex < numVertexDecls; iVertex++)
7178	{
7179	if ( sidVertex != SVGA_ID_INVALID
7180	&& pVertexDecl[iVertex].array.surfaceId != sidVertex
7181	)
7182	break;
7183	sidVertex = pVertexDecl[iVertex].array.surfaceId;
7184	}
7185
7186	rc = vmsvga3dDrawPrimitivesProcessVertexDecls(pThisCC, pContext, iCurrentVertex, iVertex - iCurrentVertex,
7187	&pVertexDecl[iCurrentVertex], pVertexDivisor);
7188	AssertRCReturn(rc, rc);
7189
7190	iCurrentVertex = iVertex;
7191	}
7192
7193	/* Now draw the primitives. */
7194	for (unsigned iPrimitive = 0; iPrimitive < numRanges; iPrimitive++)
7195	{
7196	GLenum modeDraw;
7197	unsigned const sidIndex = pRange[iPrimitive].indexArray.surfaceId;
7198	PVMSVGA3DSURFACE pIndexSurface = NULL;
7199	unsigned cVertices;
7200
7201	Log(("Primitive %d: type %s\n", iPrimitive, vmsvga3dPrimitiveType2String(pRange[iPrimitive].primType)));
7202	rc = vmsvga3dPrimitiveType2OGL(pRange[iPrimitive].primType, &modeDraw, pRange[iPrimitive].primitiveCount, &cVertices);
7203	if (RT_FAILURE(rc))
7204	{
7205	AssertRC(rc);
7206	goto internal_error;
7207	}
7208
7209	if (sidIndex != SVGA3D_INVALID_ID)
7210	{
7211	AssertMsg(pRange[iPrimitive].indexWidth == sizeof(uint32_t) \|\| pRange[iPrimitive].indexWidth == sizeof(uint16_t), ("Unsupported primitive width %d\n", pRange[iPrimitive].indexWidth));
7212
7213	rc = vmsvga3dSurfaceFromSid(pState, sidIndex, &pIndexSurface);
7214	if (RT_FAILURE(rc))
7215	{
7216	AssertRC(rc);
7217	goto internal_error;
7218	}
7219
7220	Log(("vmsvga3dDrawPrimitives: index surface sid=%u\n", sidIndex));
7221
7222	if (pIndexSurface->oglId.buffer == OPENGL_INVALID_ID)
7223	{
7224	Log(("vmsvga3dDrawPrimitives: create index buffer fDirty=%d size=%x bytes\n", pIndexSurface->fDirty, pIndexSurface->paMipmapLevels[0].cbSurface));
7225	pContext = &pState->SharedCtx;
7226	VMSVGA3D_SET_CURRENT_CONTEXT(pState, pContext);
7227
7228	pState->ext.glGenBuffers(1, &pIndexSurface->oglId.buffer);
7229	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
7230	pIndexSurface->enmOGLResType = VMSVGA3D_OGLRESTYPE_BUFFER;
7231
7232	pState->ext.glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, pIndexSurface->oglId.buffer);
7233	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
7234
7235	Assert(pIndexSurface->fDirty);
7236
7237	/** @todo rethink usage dynamic/static */
7238	pState->ext.glBufferData(GL_ELEMENT_ARRAY_BUFFER, pIndexSurface->paMipmapLevels[0].cbSurface, pIndexSurface->paMipmapLevels[0].pSurfaceData, GL_DYNAMIC_DRAW);
7239	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
7240
7241	pIndexSurface->paMipmapLevels[0].fDirty = false;
7242	pIndexSurface->fDirty = false;
7243
7244	pIndexSurface->f.s.surface1Flags \|= SVGA3D_SURFACE_HINT_INDEXBUFFER;
7245
7246	pState->ext.glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, OPENGL_INVALID_ID);
7247	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
7248
7249	pContext = pState->papContexts[cid];
7250	VMSVGA3D_SET_CURRENT_CONTEXT(pState, pContext);
7251	}
7252	Assert(pIndexSurface->fDirty == false);
7253
7254	pState->ext.glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, pIndexSurface->oglId.buffer);
7255	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
7256	}
7257
7258	if (!pIndexSurface)
7259	{
7260	/* Render without an index buffer */
7261	Log(("DrawPrimitive %d cPrimitives=%d cVertices=%d index index bias=%d cInstances=%d\n", modeDraw, pRange[iPrimitive].primitiveCount, cVertices, pRange[iPrimitive].indexBias, cInstances));
7262	if (cInstances == 0)
7263	{
7264	glDrawArrays(modeDraw, pRange[iPrimitive].indexBias, cVertices);
7265	}
7266	else
7267	{
7268	pState->ext.glDrawArraysInstanced(modeDraw, pRange[iPrimitive].indexBias, cVertices, cInstances);
7269	}
7270	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
7271	}
7272	else
7273	{
7274	Assert(pRange[iPrimitive].indexWidth == pRange[iPrimitive].indexArray.stride);
7275
7276	GLenum indexType;
7277	switch (pRange[iPrimitive].indexWidth)
7278	{
7279	case 1: indexType = GL_UNSIGNED_BYTE; break;
7280	case 2: indexType = GL_UNSIGNED_SHORT; break;
7281	default: AssertMsgFailed(("indexWidth %d\n", pRange[iPrimitive].indexWidth));
7282	RT_FALL_THROUGH();
7283	case 4: indexType = GL_UNSIGNED_INT; break;
7284	}
7285
7286	Log(("DrawIndexedPrimitive %d cPrimitives=%d cVertices=%d hint.first=%d hint.last=%d index offset=%d primitivecount=%d index width=%d index bias=%d cInstances=%d\n", modeDraw, pRange[iPrimitive].primitiveCount, cVertices, pVertexDecl[0].rangeHint.first, pVertexDecl[0].rangeHint.last, pRange[iPrimitive].indexArray.offset, pRange[iPrimitive].primitiveCount, pRange[iPrimitive].indexWidth, pRange[iPrimitive].indexBias, cInstances));
7287	if (cInstances == 0)
7288	{
7289	/* Render with an index buffer */
7290	if (pRange[iPrimitive].indexBias == 0)
7291	glDrawElements(modeDraw,
7292	cVertices,
7293	indexType,
7294	(GLvoid )(uintptr_t)pRange[iPrimitive].indexArray.offset); / byte offset in indices buffer */
7295	else
7296	pState->ext.glDrawElementsBaseVertex(modeDraw,
7297	cVertices,
7298	indexType,
7299	(GLvoid )(uintptr_t)pRange[iPrimitive].indexArray.offset, / byte offset in indices buffer */
7300	pRange[iPrimitive].indexBias); /* basevertex */
7301	}
7302	else
7303	{
7304	/* Render with an index buffer */
7305	if (pRange[iPrimitive].indexBias == 0)
7306	pState->ext.glDrawElementsInstanced(modeDraw,
7307	cVertices,
7308	indexType,
7309	(GLvoid )(uintptr_t)pRange[iPrimitive].indexArray.offset, / byte offset in indices buffer */
7310	cInstances);
7311	else
7312	pState->ext.glDrawElementsInstancedBaseVertex(modeDraw,
7313	cVertices,
7314	indexType,
7315	(GLvoid )(uintptr_t)pRange[iPrimitive].indexArray.offset, / byte offset in indices buffer */
7316	cInstances,
7317	pRange[iPrimitive].indexBias); /* basevertex */
7318	}
7319	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
7320
7321	/* Unbind the index buffer after usage. */
7322	pState->ext.glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, 0);
7323	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
7324	}
7325	}
7326
7327	internal_error:
7328
7329	/* Deactivate the vertex declarations. */
7330	iCurrentVertex = 0;
7331	while (iCurrentVertex < numVertexDecls)
7332	{
7333	uint32_t sidVertex = SVGA_ID_INVALID;
7334	uint32_t iVertex;
7335
7336	for (iVertex = iCurrentVertex; iVertex < numVertexDecls; iVertex++)
7337	{
7338	if ( sidVertex != SVGA_ID_INVALID
7339	&& pVertexDecl[iVertex].array.surfaceId != sidVertex
7340	)
7341	break;
7342	sidVertex = pVertexDecl[iVertex].array.surfaceId;
7343	}
7344
7345	rc = vmsvga3dDrawPrimitivesCleanupVertexDecls(pThisCC, pContext, iCurrentVertex,
7346	iVertex - iCurrentVertex, &pVertexDecl[iCurrentVertex]);
7347	AssertRCReturn(rc, rc);
7348
7349	iCurrentVertex = iVertex;
7350	}
7351
7352	#ifdef DEBUG
7353	/* Check whether 'activeTexture' on texture unit 'i' matches what we expect. */
7354	for (uint32_t i = 0; i < RT_ELEMENTS(pContext->aSidActiveTextures); ++i)
7355	{
7356	if (pContext->aSidActiveTextures[i] != SVGA3D_INVALID_ID)
7357	{
7358	PVMSVGA3DSURFACE pTexture;
7359	int rc2 = vmsvga3dSurfaceFromSid(pState, pContext->aSidActiveTextures[i], &pTexture);
7360	AssertContinue(RT_SUCCESS(rc2));
7361
7362	GLint activeTextureUnit = 0;
7363	glGetIntegerv(GL_ACTIVE_TEXTURE, &activeTextureUnit);
7364	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
7365
7366	pState->ext.glActiveTexture(GL_TEXTURE0 + i);
7367	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
7368
7369	GLint activeTexture = 0;
7370	glGetIntegerv(pTexture->bindingGL, &activeTexture);
7371	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
7372
7373	pState->ext.glActiveTexture(activeTextureUnit);
7374	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
7375
7376	AssertMsg(pTexture->oglId.texture == (GLuint)activeTexture,
7377	("%d vs %d unit %d (active unit %d) sid=%u\n", pTexture->oglId.texture, activeTexture, i,
7378	activeTextureUnit - GL_TEXTURE0, pContext->aSidActiveTextures[i]));
7379	}
7380	}
7381	#endif
7382
7383	#if 0
7384	/* Dump render target to a bitmap. */
7385	if (pContext->state.aRenderTargets[SVGA3D_RT_COLOR0] != SVGA3D_INVALID_ID)
7386	{
7387	vmsvga3dUpdateHeapBuffersForSurfaces(pThisCC, pContext->state.aRenderTargets[SVGA3D_RT_COLOR0]);
7388	PVMSVGA3DSURFACE pSurface;
7389	int rc2 = vmsvga3dSurfaceFromSid(pState, pContext->state.aRenderTargets[SVGA3D_RT_COLOR0], &pSurface);
7390	if (RT_SUCCESS(rc2))
7391	vmsvga3dInfoSurfaceToBitmap(NULL, pSurface, "bmpgl", "rt", "-post");
7392	# if 0
7393	/* Stage 0 texture. */
7394	if (pContext->aSidActiveTextures[0] != SVGA3D_INVALID_ID)
7395	{
7396	vmsvga3dUpdateHeapBuffersForSurfaces(pThisCC, pContext->aSidActiveTextures[0]);
7397	rc2 = vmsvga3dSurfaceFromSid(pState, pContext->aSidActiveTextures[0], &pSurface);
7398	if (RT_SUCCESS(rc2))
7399	vmsvga3dInfoSurfaceToBitmap(NULL, pSurface, "bmpgl", "rt", "-post-tx");
7400	}
7401	# endif
7402	}
7403	#endif
7404
7405	return rc;
7406	}
7407
7408
7409	static DECLCALLBACK(int) vmsvga3dBackShaderDefine(PVGASTATECC pThisCC, uint32_t cid, uint32_t shid, SVGA3dShaderType type, uint32_t cbData, uint32_t *pShaderData)
7410	{
7411	PVMSVGA3DSHADER pShader;
7412	PVMSVGA3DSTATE pState = pThisCC->svga.p3dState;
7413	AssertReturn(pState, VERR_NO_MEMORY);
7414
7415	Log(("vmsvga3dShaderDefine cid=%u shid=%d type=%s cbData=0x%x\n", cid, shid, (type == SVGA3D_SHADERTYPE_VS) ? "VERTEX" : "PIXEL", cbData));
7416
7417	PVMSVGA3DCONTEXT pContext;
7418	int rc = vmsvga3dContextFromCid(pState, cid, &pContext);
7419	AssertRCReturn(rc, rc);
7420
7421	AssertReturn(shid < SVGA3D_MAX_SHADER_IDS, VERR_INVALID_PARAMETER);
7422
7423	rc = vmsvga3dShaderParse(type, cbData, pShaderData);
7424	if (RT_FAILURE(rc))
7425	{
7426	AssertRC(rc);
7427	vmsvga3dShaderLogRel("Failed to parse", type, cbData, pShaderData);
7428	return rc;
7429	}
7430
7431	VMSVGA3D_SET_CURRENT_CONTEXT(pState, pContext);
7432
7433	if (type == SVGA3D_SHADERTYPE_VS)
7434	{
7435	if (shid >= pContext->cVertexShaders)
7436	{
7437	void pvNew = RTMemRealloc(pContext->paVertexShader, sizeof(VMSVGA3DSHADER) (shid + 1));
7438	AssertReturn(pvNew, VERR_NO_MEMORY);
7439	pContext->paVertexShader = (PVMSVGA3DSHADER)pvNew;
7440	memset(&pContext->paVertexShader[pContext->cVertexShaders], 0, sizeof(VMSVGA3DSHADER) * (shid + 1 - pContext->cVertexShaders));
7441	for (uint32_t i = pContext->cVertexShaders; i < shid + 1; i++)
7442	pContext->paVertexShader[i].id = SVGA3D_INVALID_ID;
7443	pContext->cVertexShaders = shid + 1;
7444	}
7445	/* If one already exists with this id, then destroy it now. */
7446	if (pContext->paVertexShader[shid].id != SVGA3D_INVALID_ID)
7447	vmsvga3dBackShaderDestroy(pThisCC, cid, shid, pContext->paVertexShader[shid].type);
7448
7449	pShader = &pContext->paVertexShader[shid];
7450	}
7451	else
7452	{
7453	Assert(type == SVGA3D_SHADERTYPE_PS);
7454	if (shid >= pContext->cPixelShaders)
7455	{
7456	void pvNew = RTMemRealloc(pContext->paPixelShader, sizeof(VMSVGA3DSHADER) (shid + 1));
7457	AssertReturn(pvNew, VERR_NO_MEMORY);
7458	pContext->paPixelShader = (PVMSVGA3DSHADER)pvNew;
7459	memset(&pContext->paPixelShader[pContext->cPixelShaders], 0, sizeof(VMSVGA3DSHADER) * (shid + 1 - pContext->cPixelShaders));
7460	for (uint32_t i = pContext->cPixelShaders; i < shid + 1; i++)
7461	pContext->paPixelShader[i].id = SVGA3D_INVALID_ID;
7462	pContext->cPixelShaders = shid + 1;
7463	}
7464	/* If one already exists with this id, then destroy it now. */
7465	if (pContext->paPixelShader[shid].id != SVGA3D_INVALID_ID)
7466	vmsvga3dBackShaderDestroy(pThisCC, cid, shid, pContext->paPixelShader[shid].type);
7467
7468	pShader = &pContext->paPixelShader[shid];
7469	}
7470
7471	memset(pShader, 0, sizeof(*pShader));
7472	pShader->id = shid;
7473	pShader->cid = cid;
7474	pShader->type = type;
7475	pShader->cbData = cbData;
7476	pShader->pShaderProgram = RTMemAllocZ(cbData);
7477	AssertReturn(pShader->pShaderProgram, VERR_NO_MEMORY);
7478	memcpy(pShader->pShaderProgram, pShaderData, cbData);
7479
7480	#ifdef DUMP_SHADER_DISASSEMBLY
7481	LPD3DXBUFFER pDisassembly;
7482	HRESULT hr = D3DXDisassembleShader((const DWORD *)pShaderData, FALSE, NULL, &pDisassembly);
7483	if (hr == D3D_OK)
7484	{
7485	Log(("Shader disassembly:\n%s\n", pDisassembly->GetBufferPointer()));
7486	pDisassembly->Release();
7487	}
7488	#endif
7489
7490	switch (type)
7491	{
7492	case SVGA3D_SHADERTYPE_VS:
7493	rc = ShaderCreateVertexShader(pContext->pShaderContext, (const uint32_t *)pShaderData, cbData, &pShader->u.pVertexShader);
7494	AssertRC(rc);
7495	break;
7496
7497	case SVGA3D_SHADERTYPE_PS:
7498	rc = ShaderCreatePixelShader(pContext->pShaderContext, (const uint32_t *)pShaderData, cbData, &pShader->u.pPixelShader);
7499	AssertRC(rc);
7500	break;
7501
7502	default:
7503	AssertFailedReturn(VERR_INVALID_PARAMETER);
7504	}
7505	if (rc != VINF_SUCCESS)
7506	{
7507	vmsvga3dShaderLogRel("Failed to create", type, cbData, pShaderData);
7508
7509	RTMemFree(pShader->pShaderProgram);
7510	memset(pShader, 0, sizeof(*pShader));
7511	pShader->id = SVGA3D_INVALID_ID;
7512	}
7513
7514	return rc;
7515	}
7516
7517	static DECLCALLBACK(int) vmsvga3dBackShaderDestroy(PVGASTATECC pThisCC, uint32_t cid, uint32_t shid, SVGA3dShaderType type)
7518	{
7519	PVMSVGA3DSTATE pState = pThisCC->svga.p3dState;
7520	AssertReturn(pState, VERR_NO_MEMORY);
7521	PVMSVGA3DSHADER pShader = NULL;
7522
7523	Log(("vmsvga3dShaderDestroy cid=%u shid=%d type=%s\n", cid, shid, (type == SVGA3D_SHADERTYPE_VS) ? "VERTEX" : "PIXEL"));
7524
7525	PVMSVGA3DCONTEXT pContext;
7526	int rc = vmsvga3dContextFromCid(pState, cid, &pContext);
7527	AssertRCReturn(rc, rc);
7528
7529	VMSVGA3D_SET_CURRENT_CONTEXT(pState, pContext);
7530
7531	if (type == SVGA3D_SHADERTYPE_VS)
7532	{
7533	if ( shid < pContext->cVertexShaders
7534	&& pContext->paVertexShader[shid].id == shid)
7535	{
7536	pShader = &pContext->paVertexShader[shid];
7537	if (pContext->state.shidVertex == shid)
7538	{
7539	rc = ShaderSetVertexShader(pContext->pShaderContext, NULL);
7540	AssertRC(rc);
7541	}
7542
7543	rc = ShaderDestroyVertexShader(pContext->pShaderContext, pShader->u.pVertexShader);
7544	AssertRC(rc);
7545	}
7546	}
7547	else
7548	{
7549	Assert(type == SVGA3D_SHADERTYPE_PS);
7550	if ( shid < pContext->cPixelShaders
7551	&& pContext->paPixelShader[shid].id == shid)
7552	{
7553	pShader = &pContext->paPixelShader[shid];
7554	if (pContext->state.shidPixel == shid)
7555	{
7556	ShaderSetPixelShader(pContext->pShaderContext, NULL);
7557	AssertRC(rc);
7558	}
7559
7560	rc = ShaderDestroyPixelShader(pContext->pShaderContext, pShader->u.pPixelShader);
7561	AssertRC(rc);
7562	}
7563	}
7564
7565	if (pShader)
7566	{
7567	if (pShader->pShaderProgram)
7568	RTMemFree(pShader->pShaderProgram);
7569	memset(pShader, 0, sizeof(*pShader));
7570	pShader->id = SVGA3D_INVALID_ID;
7571	}
7572	else
7573	AssertFailedReturn(VERR_INVALID_PARAMETER);
7574
7575	return VINF_SUCCESS;
7576	}
7577
7578	static DECLCALLBACK(int) vmsvga3dBackShaderSet(PVGASTATECC pThisCC, PVMSVGA3DCONTEXT pContext, uint32_t cid, SVGA3dShaderType type, uint32_t shid)
7579	{
7580	PVMSVGA3DSTATE pState = pThisCC->svga.p3dState;
7581	AssertReturn(pState, VERR_NO_MEMORY);
7582	int rc;
7583
7584	Log(("vmsvga3dShaderSet cid=%u type=%s shid=%d\n", cid, (type == SVGA3D_SHADERTYPE_VS) ? "VERTEX" : "PIXEL", shid));
7585
7586	if (!pContext)
7587	{
7588	rc = vmsvga3dContextFromCid(pState, cid, &pContext);
7589	AssertRCReturn(rc, rc);
7590	}
7591
7592	VMSVGA3D_SET_CURRENT_CONTEXT(pState, pContext);
7593
7594	if (type == SVGA3D_SHADERTYPE_VS)
7595	{
7596	/* Save for vm state save/restore. */
7597	pContext->state.shidVertex = shid;
7598	pContext->state.u32UpdateFlags \|= VMSVGA3D_UPDATE_VERTEXSHADER;
7599
7600	if ( shid < pContext->cVertexShaders
7601	&& pContext->paVertexShader[shid].id == shid)
7602	{
7603	PVMSVGA3DSHADER pShader = &pContext->paVertexShader[shid];
7604	Assert(type == pShader->type);
7605
7606	rc = ShaderSetVertexShader(pContext->pShaderContext, pShader->u.pVertexShader);
7607	AssertRCReturn(rc, rc);
7608	}
7609	else
7610	if (shid == SVGA_ID_INVALID)
7611	{
7612	/* Unselect shader. */
7613	rc = ShaderSetVertexShader(pContext->pShaderContext, NULL);
7614	AssertRCReturn(rc, rc);
7615	}
7616	else
7617	AssertFailedReturn(VERR_INVALID_PARAMETER);
7618	}
7619	else
7620	{
7621	/* Save for vm state save/restore. */
7622	pContext->state.shidPixel = shid;
7623	pContext->state.u32UpdateFlags \|= VMSVGA3D_UPDATE_PIXELSHADER;
7624
7625	Assert(type == SVGA3D_SHADERTYPE_PS);
7626	if ( shid < pContext->cPixelShaders
7627	&& pContext->paPixelShader[shid].id == shid)
7628	{
7629	PVMSVGA3DSHADER pShader = &pContext->paPixelShader[shid];
7630	Assert(type == pShader->type);
7631
7632	rc = ShaderSetPixelShader(pContext->pShaderContext, pShader->u.pPixelShader);
7633	AssertRCReturn(rc, rc);
7634	}
7635	else
7636	if (shid == SVGA_ID_INVALID)
7637	{
7638	/* Unselect shader. */
7639	rc = ShaderSetPixelShader(pContext->pShaderContext, NULL);
7640	AssertRCReturn(rc, rc);
7641	}
7642	else
7643	AssertFailedReturn(VERR_INVALID_PARAMETER);
7644	}
7645
7646	return VINF_SUCCESS;
7647	}
7648
7649	static DECLCALLBACK(int) vmsvga3dBackShaderSetConst(PVGASTATECC pThisCC, uint32_t cid, uint32_t reg, SVGA3dShaderType type, SVGA3dShaderConstType ctype, uint32_t cRegisters, uint32_t *pValues)
7650	{
7651	PVMSVGA3DSTATE pState = pThisCC->svga.p3dState;
7652	AssertReturn(pState, VERR_NO_MEMORY);
7653
7654	Log(("vmsvga3dShaderSetConst cid=%u reg=%x type=%s cregs=%d ctype=%x\n", cid, reg, (type == SVGA3D_SHADERTYPE_VS) ? "VERTEX" : "PIXEL", cRegisters, ctype));
7655
7656	PVMSVGA3DCONTEXT pContext;
7657	int rc = vmsvga3dContextFromCid(pState, cid, &pContext);
7658	AssertRCReturn(rc, rc);
7659
7660	VMSVGA3D_SET_CURRENT_CONTEXT(pState, pContext);
7661
7662	for (uint32_t i = 0; i < cRegisters; i++)
7663	{
7664	#ifdef LOG_ENABLED
7665	switch (ctype)
7666	{
7667	case SVGA3D_CONST_TYPE_FLOAT:
7668	{
7669	float pValuesF = (float )pValues;
7670	Log(("ConstantF %d: value=" FLOAT_FMT_STR ", " FLOAT_FMT_STR ", " FLOAT_FMT_STR ", " FLOAT_FMT_STR "\n",
7671	reg + i, FLOAT_FMT_ARGS(pValuesF[i4 + 0]), FLOAT_FMT_ARGS(pValuesF[i4 + 1]), FLOAT_FMT_ARGS(pValuesF[i4 + 2]), FLOAT_FMT_ARGS(pValuesF[i4 + 3])));
7672	break;
7673	}
7674
7675	case SVGA3D_CONST_TYPE_INT:
7676	Log(("ConstantI %d: value=%d, %d, %d, %d\n", reg + i, pValues[i4 + 0], pValues[i4 + 1], pValues[i4 + 2], pValues[i4 + 3]));
7677	break;
7678
7679	case SVGA3D_CONST_TYPE_BOOL:
7680	Log(("ConstantB %d: value=%d, %d, %d, %d\n", reg + i, pValues[i4 + 0], pValues[i4 + 1], pValues[i4 + 2], pValues[i4 + 3]));
7681	break;
7682
7683	default:
7684	AssertFailedReturn(VERR_INVALID_PARAMETER);
7685	}
7686	#endif
7687	vmsvga3dSaveShaderConst(pContext, reg + i, type, ctype, pValues[i4 + 0], pValues[i4 + 1], pValues[i4 + 2], pValues[i4 + 3]);
7688	}
7689
7690	switch (type)
7691	{
7692	case SVGA3D_SHADERTYPE_VS:
7693	switch (ctype)
7694	{
7695	case SVGA3D_CONST_TYPE_FLOAT:
7696	rc = ShaderSetVertexShaderConstantF(pContext->pShaderContext, reg, (const float *)pValues, cRegisters);
7697	break;
7698
7699	case SVGA3D_CONST_TYPE_INT:
7700	rc = ShaderSetVertexShaderConstantI(pContext->pShaderContext, reg, (const int32_t *)pValues, cRegisters);
7701	break;
7702
7703	case SVGA3D_CONST_TYPE_BOOL:
7704	rc = ShaderSetVertexShaderConstantB(pContext->pShaderContext, reg, (const uint8_t *)pValues, cRegisters);
7705	break;
7706
7707	default:
7708	AssertFailedReturn(VERR_INVALID_PARAMETER);
7709	}
7710	AssertRCReturn(rc, rc);
7711	break;
7712
7713	case SVGA3D_SHADERTYPE_PS:
7714	switch (ctype)
7715	{
7716	case SVGA3D_CONST_TYPE_FLOAT:
7717	rc = ShaderSetPixelShaderConstantF(pContext->pShaderContext, reg, (const float *)pValues, cRegisters);
7718	break;
7719
7720	case SVGA3D_CONST_TYPE_INT:
7721	rc = ShaderSetPixelShaderConstantI(pContext->pShaderContext, reg, (const int32_t *)pValues, cRegisters);
7722	break;
7723
7724	case SVGA3D_CONST_TYPE_BOOL:
7725	rc = ShaderSetPixelShaderConstantB(pContext->pShaderContext, reg, (const uint8_t *)pValues, cRegisters);
7726	break;
7727
7728	default:
7729	AssertFailedReturn(VERR_INVALID_PARAMETER);
7730	}
7731	AssertRCReturn(rc, rc);
7732	break;
7733
7734	default:
7735	AssertFailedReturn(VERR_INVALID_PARAMETER);
7736	}
7737
7738	return VINF_SUCCESS;
7739	}
7740
7741	static DECLCALLBACK(int) vmsvga3dBackOcclusionQueryCreate(PVGASTATECC pThisCC, PVMSVGA3DCONTEXT pContext)
7742	{
7743	PVMSVGA3DSTATE pState = pThisCC->svga.p3dState;
7744	AssertReturn(pState->ext.glGenQueries, VERR_NOT_SUPPORTED);
7745	VMSVGA3D_SET_CURRENT_CONTEXT(pState, pContext);
7746
7747	GLuint idQuery = 0;
7748	pState->ext.glGenQueries(1, &idQuery);
7749	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
7750	AssertReturn(idQuery, VERR_INTERNAL_ERROR);
7751	pContext->occlusion.idQuery = idQuery;
7752	return VINF_SUCCESS;
7753	}
7754
7755	static DECLCALLBACK(int) vmsvga3dBackOcclusionQueryDelete(PVGASTATECC pThisCC, PVMSVGA3DCONTEXT pContext)
7756	{
7757	PVMSVGA3DSTATE pState = pThisCC->svga.p3dState;
7758	AssertReturn(pState->ext.glDeleteQueries, VERR_NOT_SUPPORTED);
7759	VMSVGA3D_SET_CURRENT_CONTEXT(pState, pContext);
7760
7761	if (pContext->occlusion.idQuery)
7762	{
7763	pState->ext.glDeleteQueries(1, &pContext->occlusion.idQuery);
7764	}
7765	return VINF_SUCCESS;
7766	}
7767
7768	static DECLCALLBACK(int) vmsvga3dBackOcclusionQueryBegin(PVGASTATECC pThisCC, PVMSVGA3DCONTEXT pContext)
7769	{
7770	PVMSVGA3DSTATE pState = pThisCC->svga.p3dState;
7771	AssertReturn(pState->ext.glBeginQuery, VERR_NOT_SUPPORTED);
7772	VMSVGA3D_SET_CURRENT_CONTEXT(pState, pContext);
7773
7774	pState->ext.glBeginQuery(GL_ANY_SAMPLES_PASSED, pContext->occlusion.idQuery);
7775	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
7776	return VINF_SUCCESS;
7777	}
7778
7779	static DECLCALLBACK(int) vmsvga3dBackOcclusionQueryEnd(PVGASTATECC pThisCC, PVMSVGA3DCONTEXT pContext)
7780	{
7781	PVMSVGA3DSTATE pState = pThisCC->svga.p3dState;
7782	AssertReturn(pState->ext.glEndQuery, VERR_NOT_SUPPORTED);
7783	VMSVGA3D_SET_CURRENT_CONTEXT(pState, pContext);
7784
7785	pState->ext.glEndQuery(GL_ANY_SAMPLES_PASSED);
7786	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
7787	return VINF_SUCCESS;
7788	}
7789
7790	static DECLCALLBACK(int) vmsvga3dBackOcclusionQueryGetData(PVGASTATECC pThisCC, PVMSVGA3DCONTEXT pContext, uint32_t *pu32Pixels)
7791	{
7792	PVMSVGA3DSTATE pState = pThisCC->svga.p3dState;
7793	AssertReturn(pState->ext.glGetQueryObjectuiv, VERR_NOT_SUPPORTED);
7794	VMSVGA3D_SET_CURRENT_CONTEXT(pState, pContext);
7795
7796	GLuint pixels = 0;
7797	pState->ext.glGetQueryObjectuiv(pContext->occlusion.idQuery, GL_QUERY_RESULT, &pixels);
7798	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
7799
7800	*pu32Pixels = (uint32_t)pixels;
7801	return VINF_SUCCESS;
7802	}
7803
7804	/**
7805	* Worker for vmsvga3dUpdateHeapBuffersForSurfaces.
7806	*
7807	* This will allocate heap buffers if necessary, thus increasing the memory
7808	* usage of the process.
7809	*
7810	* @todo Would be interesting to share this code with the saved state code.
7811	*
7812	* @returns VBox status code.
7813	* @param pThisCC The VGA/VMSVGA context.
7814	* @param pSurface The surface to refresh the heap buffers for.
7815	*/
7816	static DECLCALLBACK(int) vmsvga3dBackSurfaceUpdateHeapBuffers(PVGASTATECC pThisCC, PVMSVGA3DSURFACE pSurface)
7817	{
7818	PVMSVGA3DSTATE pState = pThisCC->svga.p3dState;
7819	AssertReturn(pState, VERR_INVALID_STATE);
7820
7821	/*
7822	* Currently we've got trouble retreving bit for DEPTHSTENCIL
7823	* surfaces both for OpenGL and D3D, so skip these here (don't
7824	* wast memory on them).
7825	*/
7826	uint32_t const fSwitchFlags = pSurface->f.s.surface1Flags & VMSVGA3D_SURFACE_HINT_SWITCH_MASK;
7827	if ( fSwitchFlags != SVGA3D_SURFACE_HINT_DEPTHSTENCIL
7828	&& fSwitchFlags != (SVGA3D_SURFACE_HINT_DEPTHSTENCIL \| SVGA3D_SURFACE_HINT_TEXTURE))
7829	{
7830	/*
7831	* Change OpenGL context to the one the surface is associated with.
7832	*/
7833	PVMSVGA3DCONTEXT pContext = &pState->SharedCtx;
7834	VMSVGA3D_SET_CURRENT_CONTEXT(pState, pContext);
7835
7836	/*
7837	* Work thru each mipmap level for each face.
7838	*/
7839	for (uint32_t iFace = 0; iFace < pSurface->cFaces; iFace++)
7840	{
7841	PVMSVGA3DMIPMAPLEVEL pMipmapLevel = &pSurface->paMipmapLevels[iFace * pSurface->cLevels];
7842	for (uint32_t i = 0; i < pSurface->cLevels; i++, pMipmapLevel++)
7843	{
7844	if (VMSVGA3DSURFACE_HAS_HW_SURFACE(pSurface))
7845	{
7846	Assert(pMipmapLevel->cbSurface);
7847	Assert(pMipmapLevel->cbSurface == pMipmapLevel->cbSurfacePlane * pMipmapLevel->mipmapSize.depth);
7848
7849	/*
7850	* Make sure we've got surface memory buffer.
7851	*/
7852	uint8_t pbDst = (uint8_t )pMipmapLevel->pSurfaceData;
7853	if (!pbDst)
7854	{
7855	pMipmapLevel->pSurfaceData = pbDst = (uint8_t *)RTMemAllocZ(pMipmapLevel->cbSurface);
7856	AssertReturn(pbDst, VERR_NO_MEMORY);
7857	}
7858
7859	/*
7860	* OpenGL specifics.
7861	*/
7862	switch (pSurface->enmOGLResType)
7863	{
7864	case VMSVGA3D_OGLRESTYPE_TEXTURE:
7865	{
7866	GLint activeTexture;
7867	glGetIntegerv(GL_TEXTURE_BINDING_2D, &activeTexture);
7868	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
7869
7870	glBindTexture(GL_TEXTURE_2D, pSurface->oglId.texture);
7871	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
7872
7873	/* Set row length and alignment of the output data. */
7874	VMSVGAPACKPARAMS SavedParams;
7875	vmsvga3dOglSetPackParams(pState, pContext, pSurface, &SavedParams);
7876
7877	glGetTexImage(GL_TEXTURE_2D,
7878	i,
7879	pSurface->formatGL,
7880	pSurface->typeGL,
7881	pbDst);
7882	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
7883
7884	vmsvga3dOglRestorePackParams(pState, pContext, pSurface, &SavedParams);
7885
7886	/* Restore the old active texture. */
7887	glBindTexture(GL_TEXTURE_2D, activeTexture);
7888	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
7889	break;
7890	}
7891
7892	case VMSVGA3D_OGLRESTYPE_BUFFER:
7893	{
7894	pState->ext.glBindBuffer(GL_ARRAY_BUFFER, pSurface->oglId.buffer);
7895	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
7896
7897	void *pvSrc = pState->ext.glMapBuffer(GL_ARRAY_BUFFER, GL_READ_ONLY);
7898	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
7899	if (RT_VALID_PTR(pvSrc))
7900	memcpy(pbDst, pvSrc, pMipmapLevel->cbSurface);
7901	else
7902	AssertPtr(pvSrc);
7903
7904	pState->ext.glUnmapBuffer(GL_ARRAY_BUFFER);
7905	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
7906
7907	pState->ext.glBindBuffer(GL_ARRAY_BUFFER, 0);
7908	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
7909	break;
7910	}
7911
7912	default:
7913	AssertMsgFailed(("%#x\n", fSwitchFlags));
7914	}
7915	}
7916	/* else: There is no data in hardware yet, so whatever we got is already current. */
7917	}
7918	}
7919	}
7920
7921	return VINF_SUCCESS;
7922	}
7923
7924	static DECLCALLBACK(int) vmsvga3dBackQueryInterface(PVGASTATECC pThisCC, char const pszInterfaceName, void pvInterfaceFuncs, size_t cbInterfaceFuncs)
7925	{
7926	RT_NOREF(pThisCC);
7927
7928	int rc = VINF_SUCCESS;
7929	if (RTStrCmp(pszInterfaceName, VMSVGA3D_BACKEND_INTERFACE_NAME_3D) == 0)
7930	{
7931	if (cbInterfaceFuncs == sizeof(VMSVGA3DBACKENDFUNCS3D))
7932	{
7933	if (pvInterfaceFuncs)
7934	{
7935	VMSVGA3DBACKENDFUNCS3D p = (VMSVGA3DBACKENDFUNCS3D )pvInterfaceFuncs;
7936	p->pfnInit = vmsvga3dBackInit;
7937	p->pfnPowerOn = vmsvga3dBackPowerOn;
7938	p->pfnTerminate = vmsvga3dBackTerminate;
7939	p->pfnReset = vmsvga3dBackReset;
7940	p->pfnQueryCaps = vmsvga3dBackQueryCaps;
7941	p->pfnChangeMode = vmsvga3dBackChangeMode;
7942	p->pfnCreateTexture = vmsvga3dBackCreateTexture;
7943	p->pfnSurfaceDestroy = vmsvga3dBackSurfaceDestroy;
7944	p->pfnSurfaceInvalidateImage = vmsvga3dBackSurfaceInvalidateImage;
7945	p->pfnSurfaceCopy = vmsvga3dBackSurfaceCopy;
7946	p->pfnSurfaceDMACopyBox = vmsvga3dBackSurfaceDMACopyBox;
7947	p->pfnSurfaceStretchBlt = vmsvga3dBackSurfaceStretchBlt;
7948	p->pfnUpdateHostScreenViewport = vmsvga3dBackUpdateHostScreenViewport;
7949	p->pfnDefineScreen = vmsvga3dBackDefineScreen;
7950	p->pfnDestroyScreen = vmsvga3dBackDestroyScreen;
7951	p->pfnSurfaceBlitToScreen = vmsvga3dBackSurfaceBlitToScreen;
7952	p->pfnSurfaceUpdateHeapBuffers = vmsvga3dBackSurfaceUpdateHeapBuffers;
7953	}
7954	}
7955	else
7956	{
7957	AssertFailed();
7958	rc = VERR_INVALID_PARAMETER;
7959	}
7960	}
7961	else if (RTStrCmp(pszInterfaceName, VMSVGA3D_BACKEND_INTERFACE_NAME_VGPU9) == 0)
7962	{
7963	if (cbInterfaceFuncs == sizeof(VMSVGA3DBACKENDFUNCSVGPU9))
7964	{
7965	if (pvInterfaceFuncs)
7966	{
7967	VMSVGA3DBACKENDFUNCSVGPU9 p = (VMSVGA3DBACKENDFUNCSVGPU9 )pvInterfaceFuncs;
7968	p->pfnContextDefine = vmsvga3dBackContextDefine;
7969	p->pfnContextDestroy = vmsvga3dBackContextDestroy;
7970	p->pfnSetTransform = vmsvga3dBackSetTransform;
7971	p->pfnSetZRange = vmsvga3dBackSetZRange;
7972	p->pfnSetRenderState = vmsvga3dBackSetRenderState;
7973	p->pfnSetRenderTarget = vmsvga3dBackSetRenderTarget;
7974	p->pfnSetTextureState = vmsvga3dBackSetTextureState;
7975	p->pfnSetMaterial = vmsvga3dBackSetMaterial;
7976	p->pfnSetLightData = vmsvga3dBackSetLightData;
7977	p->pfnSetLightEnabled = vmsvga3dBackSetLightEnabled;
7978	p->pfnSetViewPort = vmsvga3dBackSetViewPort;
7979	p->pfnSetClipPlane = vmsvga3dBackSetClipPlane;
7980	p->pfnCommandClear = vmsvga3dBackCommandClear;
7981	p->pfnDrawPrimitives = vmsvga3dBackDrawPrimitives;
7982	p->pfnSetScissorRect = vmsvga3dBackSetScissorRect;
7983	p->pfnGenerateMipmaps = vmsvga3dBackGenerateMipmaps;
7984	p->pfnShaderDefine = vmsvga3dBackShaderDefine;
7985	p->pfnShaderDestroy = vmsvga3dBackShaderDestroy;
7986	p->pfnShaderSet = vmsvga3dBackShaderSet;
7987	p->pfnShaderSetConst = vmsvga3dBackShaderSetConst;
7988	p->pfnOcclusionQueryCreate = vmsvga3dBackOcclusionQueryCreate;
7989	p->pfnOcclusionQueryDelete = vmsvga3dBackOcclusionQueryDelete;
7990	p->pfnOcclusionQueryBegin = vmsvga3dBackOcclusionQueryBegin;
7991	p->pfnOcclusionQueryEnd = vmsvga3dBackOcclusionQueryEnd;
7992	p->pfnOcclusionQueryGetData = vmsvga3dBackOcclusionQueryGetData;
7993	}
7994	}
7995	else
7996	{
7997	AssertFailed();
7998	rc = VERR_INVALID_PARAMETER;
7999	}
8000	}
8001	else
8002	rc = VERR_NOT_IMPLEMENTED;
8003	return rc;
8004	}
8005
8006
8007	extern VMSVGA3DBACKENDDESC const g_BackendLegacy =
8008	{
8009	"LEGACY",
8010	vmsvga3dBackQueryInterface
8011	};

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source: vbox/trunk/src/VBox/Devices/Graphics/DevVGA-SVGA3d-ogl.cpp@ 95231

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