[27866] | 1 | /* $XFree86: xc/lib/GL/dri/dri_util.c,v 1.7 2003/04/28 17:01:25 dawes Exp $ */
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| 2 | /**
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| 3 | * \file dri_util.c
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| 4 | * DRI utility functions.
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| 5 | *
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| 6 | * This module acts as glue between GLX and the actual hardware driver. A DRI
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| 7 | * driver doesn't really \e have to use any of this - it's optional. But, some
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| 8 | * useful stuff is done here that otherwise would have to be duplicated in most
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| 9 | * drivers.
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| 10 | *
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| 11 | * Basically, these utility functions take care of some of the dirty details of
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| 12 | * screen initialization, context creation, context binding, DRM setup, etc.
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| 13 | *
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| 14 | * These functions are compiled into each DRI driver so libGL.so knows nothing
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| 15 | * about them.
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| 16 | */
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| 17 |
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| 18 |
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| 19 | #include <assert.h>
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| 20 | #include <stdarg.h>
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| 21 | #include <unistd.h>
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| 22 | #include <sys/mman.h>
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| 23 | #include <stdio.h>
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| 24 |
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| 25 | #ifndef MAP_FAILED
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| 26 | #define MAP_FAILED ((void *)-1)
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| 27 | #endif
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| 28 |
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| 29 | #include "imports.h"
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| 30 | #define None 0
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| 31 |
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| 32 | #include "dri_util.h"
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| 33 | #include "drm_sarea.h"
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| 34 | #include "utils.h"
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| 35 |
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| 36 | #ifndef GLX_OML_sync_control
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| 37 | typedef GLboolean ( * PFNGLXGETMSCRATEOMLPROC) (__DRIdrawable *drawable, int32_t *numerator, int32_t *denominator);
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| 38 | #endif
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| 39 |
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| 40 | /**
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| 41 | * This is just a token extension used to signal that the driver
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| 42 | * supports setting a read drawable.
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| 43 | */
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| 44 | const __DRIextension driReadDrawableExtension = {
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| 45 | __DRI_READ_DRAWABLE, __DRI_READ_DRAWABLE_VERSION
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| 46 | };
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| 47 |
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| 48 | /**
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| 49 | * Print message to \c stderr if the \c LIBGL_DEBUG environment variable
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| 50 | * is set.
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| 51 | *
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| 52 | * Is called from the drivers.
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| 53 | *
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| 54 | * \param f \c printf like format string.
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| 55 | */
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| 56 | void
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| 57 | __driUtilMessage(const char *f, ...)
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| 58 | {
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| 59 | va_list args;
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| 60 |
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| 61 | if (getenv("LIBGL_DEBUG")) {
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| 62 | fprintf(stderr, "libGL error: \n");
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| 63 | va_start(args, f);
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| 64 | vfprintf(stderr, f, args);
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| 65 | va_end(args);
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| 66 | fprintf(stderr, "\n");
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| 67 | }
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| 68 | }
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| 69 |
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| 70 | GLint
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| 71 | driIntersectArea( drm_clip_rect_t rect1, drm_clip_rect_t rect2 )
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| 72 | {
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| 73 | if (rect2.x1 > rect1.x1) rect1.x1 = rect2.x1;
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| 74 | if (rect2.x2 < rect1.x2) rect1.x2 = rect2.x2;
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| 75 | if (rect2.y1 > rect1.y1) rect1.y1 = rect2.y1;
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| 76 | if (rect2.y2 < rect1.y2) rect1.y2 = rect2.y2;
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| 77 |
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| 78 | if (rect1.x1 > rect1.x2 || rect1.y1 > rect1.y2) return 0;
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| 79 |
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| 80 | return (rect1.x2 - rect1.x1) * (rect1.y2 - rect1.y1);
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| 81 | }
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| 82 |
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| 83 | /*****************************************************************/
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| 84 | /** \name Context (un)binding functions */
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| 85 | /*****************************************************************/
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| 86 | /*@{*/
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| 87 |
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| 88 | /**
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| 89 | * Unbind context.
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| 90 | *
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| 91 | * \param scrn the screen.
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| 92 | * \param gc context.
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| 93 | *
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| 94 | * \return \c GL_TRUE on success, or \c GL_FALSE on failure.
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| 95 | *
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| 96 | * \internal
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| 97 | * This function calls __DriverAPIRec::UnbindContext, and then decrements
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| 98 | * __DRIdrawablePrivateRec::refcount which must be non-zero for a successful
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| 99 | * return.
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| 100 | *
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| 101 | * While casting the opaque private pointers associated with the parameters
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| 102 | * into their respective real types it also assures they are not \c NULL.
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| 103 | */
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| 104 | static int driUnbindContext(__DRIcontext *pcp)
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| 105 | {
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| 106 | __DRIscreen *psp;
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| 107 | __DRIdrawable *pdp;
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| 108 | __DRIdrawable *prp;
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| 109 |
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| 110 | /*
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| 111 | ** Assume error checking is done properly in glXMakeCurrent before
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| 112 | ** calling driUnbindContext.
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| 113 | */
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| 114 |
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| 115 | if (pcp == NULL)
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| 116 | return GL_FALSE;
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| 117 |
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| 118 | psp = pcp->driScreenPriv;
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| 119 | pdp = pcp->driDrawablePriv;
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| 120 | prp = pcp->driReadablePriv;
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| 121 |
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| 122 | /* Let driver unbind drawable from context */
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| 123 | (*psp->DriverAPI.UnbindContext)(pcp);
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| 124 |
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| 125 | if (pdp->refcount == 0) {
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| 126 | /* ERROR!!! */
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| 127 | return GL_FALSE;
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| 128 | }
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| 129 |
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| 130 | pdp->refcount--;
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| 131 |
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| 132 | if (prp != pdp) {
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| 133 | if (prp->refcount == 0) {
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| 134 | /* ERROR!!! */
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| 135 | return GL_FALSE;
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| 136 | }
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| 137 |
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| 138 | prp->refcount--;
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| 139 | }
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| 140 |
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| 141 |
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| 142 | /* XXX this is disabled so that if we call SwapBuffers on an unbound
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| 143 | * window we can determine the last context bound to the window and
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| 144 | * use that context's lock. (BrianP, 2-Dec-2000)
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| 145 | */
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| 146 | #if 0
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| 147 | /* Unbind the drawable */
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| 148 | pcp->driDrawablePriv = NULL;
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| 149 | pdp->driContextPriv = &psp->dummyContextPriv;
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| 150 | #endif
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| 151 |
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| 152 | return GL_TRUE;
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| 153 | }
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| 154 |
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| 155 |
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| 156 | /**
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| 157 | * This function takes both a read buffer and a draw buffer. This is needed
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| 158 | * for \c glXMakeCurrentReadSGI or GLX 1.3's \c glXMakeContextCurrent
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| 159 | * function.
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| 160 | */
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| 161 | static int driBindContext(__DRIcontext *pcp,
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| 162 | __DRIdrawable *pdp,
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| 163 | __DRIdrawable *prp)
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| 164 | {
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[62061] | 165 | __DRIscreenPrivate *psp;
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[27866] | 166 |
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| 167 | /*
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| 168 | ** Assume error checking is done properly in glXMakeCurrent before
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| 169 | ** calling driBindContext.
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| 170 | */
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| 171 |
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| 172 | if (pcp == NULL || pdp == None || prp == None)
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| 173 | return GL_FALSE;
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| 174 |
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| 175 | /* Bind the drawable to the context */
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| 176 | pcp->driDrawablePriv = pdp;
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| 177 | pcp->driReadablePriv = prp;
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| 178 | pdp->driContextPriv = pcp;
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| 179 | pdp->refcount++;
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| 180 | if ( pdp != prp ) {
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| 181 | prp->refcount++;
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| 182 | }
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| 183 |
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| 184 | /*
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| 185 | ** Now that we have a context associated with this drawable, we can
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| 186 | ** initialize the drawable information if has not been done before.
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| 187 | */
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| 188 |
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[62061] | 189 | psp = pcp->driScreenPriv;
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[27866] | 190 | if (psp->dri2.enabled) {
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| 191 | __driParseEvents(pcp, pdp);
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| 192 | __driParseEvents(pcp, prp);
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| 193 | } else {
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| 194 | if (!pdp->pStamp || *pdp->pStamp != pdp->lastStamp) {
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| 195 | DRM_SPINLOCK(&psp->pSAREA->drawable_lock, psp->drawLockID);
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| 196 | __driUtilUpdateDrawableInfo(pdp);
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| 197 | DRM_SPINUNLOCK(&psp->pSAREA->drawable_lock, psp->drawLockID);
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| 198 | }
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| 199 |
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| 200 | if ((pdp != prp) && (!prp->pStamp || *prp->pStamp != prp->lastStamp)) {
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| 201 | DRM_SPINLOCK(&psp->pSAREA->drawable_lock, psp->drawLockID);
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| 202 | __driUtilUpdateDrawableInfo(prp);
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| 203 | DRM_SPINUNLOCK(&psp->pSAREA->drawable_lock, psp->drawLockID);
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| 204 | }
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| 205 | }
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| 206 |
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| 207 | /* Call device-specific MakeCurrent */
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| 208 | (*psp->DriverAPI.MakeCurrent)(pcp, pdp, prp);
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| 209 |
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| 210 | return GL_TRUE;
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| 211 | }
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| 212 |
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| 213 | /*@}*/
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| 214 |
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| 215 |
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| 216 | /*****************************************************************/
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| 217 | /** \name Drawable handling functions */
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| 218 | /*****************************************************************/
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| 219 | /*@{*/
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| 220 |
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| 221 | /**
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| 222 | * Update private drawable information.
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| 223 | *
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| 224 | * \param pdp pointer to the private drawable information to update.
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| 225 | *
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| 226 | * This function basically updates the __DRIdrawablePrivate struct's
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| 227 | * cliprect information by calling \c __DRIinterfaceMethods::getDrawableInfo.
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| 228 | * This is usually called by the DRI_VALIDATE_DRAWABLE_INFO macro which
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| 229 | * compares the __DRIdrwablePrivate pStamp and lastStamp values. If
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| 230 | * the values are different that means we have to update the clipping
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| 231 | * info.
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| 232 | */
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| 233 | void
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| 234 | __driUtilUpdateDrawableInfo(__DRIdrawablePrivate *pdp)
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| 235 | {
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| 236 | __DRIscreenPrivate *psp = pdp->driScreenPriv;
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| 237 | __DRIcontextPrivate *pcp = pdp->driContextPriv;
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| 238 |
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| 239 | if (!pcp
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| 240 | || ((pdp != pcp->driDrawablePriv) && (pdp != pcp->driReadablePriv))) {
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| 241 | /* ERROR!!!
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| 242 | * ...but we must ignore it. There can be many contexts bound to a
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| 243 | * drawable.
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| 244 | */
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| 245 | }
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| 246 |
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| 247 | if (pdp->pClipRects) {
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| 248 | _mesa_free(pdp->pClipRects);
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| 249 | pdp->pClipRects = NULL;
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| 250 | }
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| 251 |
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| 252 | if (pdp->pBackClipRects) {
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| 253 | _mesa_free(pdp->pBackClipRects);
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| 254 | pdp->pBackClipRects = NULL;
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| 255 | }
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| 256 |
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| 257 | DRM_SPINUNLOCK(&psp->pSAREA->drawable_lock, psp->drawLockID);
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| 258 |
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| 259 | if (! (*psp->getDrawableInfo->getDrawableInfo)(pdp,
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| 260 | &pdp->index, &pdp->lastStamp,
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| 261 | &pdp->x, &pdp->y, &pdp->w, &pdp->h,
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| 262 | &pdp->numClipRects, &pdp->pClipRects,
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| 263 | &pdp->backX,
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| 264 | &pdp->backY,
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| 265 | &pdp->numBackClipRects,
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| 266 | &pdp->pBackClipRects,
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| 267 | pdp->loaderPrivate)) {
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| 268 | /* Error -- eg the window may have been destroyed. Keep going
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| 269 | * with no cliprects.
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| 270 | */
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| 271 | pdp->pStamp = &pdp->lastStamp; /* prevent endless loop */
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| 272 | pdp->numClipRects = 0;
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| 273 | pdp->pClipRects = NULL;
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| 274 | pdp->numBackClipRects = 0;
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| 275 | pdp->pBackClipRects = NULL;
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| 276 | }
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| 277 | else
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| 278 | pdp->pStamp = &(psp->pSAREA->drawableTable[pdp->index].stamp);
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| 279 |
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| 280 | DRM_SPINLOCK(&psp->pSAREA->drawable_lock, psp->drawLockID);
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| 281 | }
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| 282 |
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| 283 |
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| 284 | int
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| 285 | __driParseEvents(__DRIcontextPrivate *pcp, __DRIdrawablePrivate *pdp)
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| 286 | {
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| 287 | __DRIscreenPrivate *psp = pdp->driScreenPriv;
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| 288 | __DRIDrawableConfigEvent *dc, *last_dc;
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| 289 | __DRIBufferAttachEvent *ba, *last_ba;
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| 290 | unsigned int tail, mask, *p, end, total, size, changed;
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| 291 | unsigned char *data;
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| 292 | size_t rect_size;
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| 293 |
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| 294 | /* Check for wraparound. */
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| 295 | if (pcp && psp->dri2.buffer->prealloc - pdp->dri2.tail > psp->dri2.buffer->size) {
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| 296 | /* If prealloc overlaps into what we just parsed, the
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| 297 | * server overwrote it and we have to reset our tail
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| 298 | * pointer. */
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| 299 | DRM_UNLOCK(psp->fd, psp->lock, pcp->hHWContext);
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| 300 | (*psp->dri2.loader->reemitDrawableInfo)(pdp, &pdp->dri2.tail,
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| 301 | pdp->loaderPrivate);
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| 302 | DRM_LIGHT_LOCK(psp->fd, psp->lock, pcp->hHWContext);
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| 303 | }
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| 304 |
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| 305 | total = psp->dri2.buffer->head - pdp->dri2.tail;
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| 306 | mask = psp->dri2.buffer->size - 1;
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| 307 | end = psp->dri2.buffer->head;
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| 308 | data = psp->dri2.buffer->data;
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| 309 |
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| 310 | changed = 0;
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| 311 | last_dc = NULL;
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| 312 | last_ba = NULL;
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| 313 |
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| 314 | for (tail = pdp->dri2.tail; tail != end; tail += size) {
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| 315 | p = (unsigned int *) (data + (tail & mask));
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| 316 | size = DRI2_EVENT_SIZE(*p);
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| 317 | if (size > total || (tail & mask) + size > psp->dri2.buffer->size) {
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| 318 | /* illegal data, bail out. */
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| 319 | fprintf(stderr, "illegal event size\n");
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| 320 | break;
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| 321 | }
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| 322 |
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| 323 | switch (DRI2_EVENT_TYPE(*p)) {
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| 324 | case DRI2_EVENT_DRAWABLE_CONFIG:
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| 325 | dc = (__DRIDrawableConfigEvent *) p;
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| 326 | if (dc->drawable == pdp->dri2.drawable_id)
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| 327 | last_dc = dc;
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| 328 | break;
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| 329 |
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| 330 | case DRI2_EVENT_BUFFER_ATTACH:
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| 331 | ba = (__DRIBufferAttachEvent *) p;
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| 332 | if (ba->drawable == pdp->dri2.drawable_id &&
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| 333 | ba->buffer.attachment == DRI_DRAWABLE_BUFFER_FRONT_LEFT)
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| 334 | last_ba = ba;
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| 335 | break;
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| 336 | }
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| 337 | }
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| 338 |
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| 339 | if (last_dc) {
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| 340 | if (pdp->w != last_dc->width || pdp->h != last_dc->height)
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| 341 | changed = 1;
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| 342 |
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| 343 | pdp->x = last_dc->x;
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| 344 | pdp->y = last_dc->y;
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| 345 | pdp->w = last_dc->width;
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| 346 | pdp->h = last_dc->height;
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| 347 |
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| 348 | pdp->backX = 0;
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| 349 | pdp->backY = 0;
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| 350 | pdp->numBackClipRects = 1;
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| 351 | pdp->pBackClipRects[0].x1 = 0;
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| 352 | pdp->pBackClipRects[0].y1 = 0;
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| 353 | pdp->pBackClipRects[0].x2 = pdp->w;
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| 354 | pdp->pBackClipRects[0].y2 = pdp->h;
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| 355 |
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| 356 | pdp->numClipRects = last_dc->num_rects;
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| 357 | _mesa_free(pdp->pClipRects);
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| 358 | rect_size = last_dc->num_rects * sizeof last_dc->rects[0];
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| 359 | pdp->pClipRects = _mesa_malloc(rect_size);
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| 360 | memcpy(pdp->pClipRects, last_dc->rects, rect_size);
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| 361 | }
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| 362 |
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| 363 | /* We only care about the most recent drawable config. */
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| 364 | if (last_dc && changed)
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| 365 | (*psp->DriverAPI.HandleDrawableConfig)(pdp, pcp, last_dc);
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| 366 |
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| 367 | /* Front buffer attachments are special, they typically mean that
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| 368 | * we're rendering to a redirected window (or a child window of a
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| 369 | * redirected window) and that it got resized. Resizing the root
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| 370 | * window on randr events is a special case of this. Other causes
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| 371 | * may be a window transitioning between redirected and
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| 372 | * non-redirected, or a window getting reparented between parents
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| 373 | * with different window pixmaps (eg two redirected windows).
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| 374 | * These events are special in that the X server allocates the
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| 375 | * buffer and that the buffer may be shared by other child
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| 376 | * windows. When our window share the window pixmap with its
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| 377 | * parent, drawable config events doesn't affect the front buffer.
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| 378 | * We only care about the last such event in the buffer; in fact,
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| 379 | * older events will refer to invalid buffer objects.*/
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| 380 | if (last_ba)
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| 381 | (*psp->DriverAPI.HandleBufferAttach)(pdp, pcp, last_ba);
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| 382 |
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| 383 | /* If there was a drawable config event in the buffer and it
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[33540] | 384 | * changed the size of the window, all buffer auxiliary buffer
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[27866] | 385 | * attachments prior to that are invalid (as opposed to the front
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| 386 | * buffer case discussed above). In that case we can start
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| 387 | * looking for buffer attachment after the last drawable config
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| 388 | * event. If there is no drawable config event in this batch of
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| 389 | * events, we have to assume that the last batch might have had
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| 390 | * one and process all buffer attach events.*/
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| 391 | if (last_dc && changed)
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| 392 | tail = (unsigned char *) last_dc - data;
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| 393 | else
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| 394 | tail = pdp->dri2.tail;
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| 395 |
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| 396 | for ( ; tail != end; tail += size) {
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| 397 | ba = (__DRIBufferAttachEvent *) (data + (tail & mask));
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| 398 | size = DRI2_EVENT_SIZE(ba->event_header);
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| 399 |
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| 400 | if (DRI2_EVENT_TYPE(ba->event_header) != DRI2_EVENT_BUFFER_ATTACH)
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| 401 | continue;
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| 402 | if (ba->drawable != pdp->dri2.drawable_id)
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| 403 | continue;
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| 404 | if (last_ba == ba)
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| 405 | continue;
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| 406 |
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| 407 | (*psp->DriverAPI.HandleBufferAttach)(pdp, pcp, ba);
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| 408 | changed = 1;
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| 409 | }
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| 410 |
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| 411 | pdp->dri2.tail = tail;
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| 412 |
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| 413 | return changed || last_ba;
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| 414 | }
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| 415 |
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| 416 | /*@}*/
|
---|
| 417 |
|
---|
| 418 | /*****************************************************************/
|
---|
| 419 | /** \name GLX callbacks */
|
---|
| 420 | /*****************************************************************/
|
---|
| 421 | /*@{*/
|
---|
| 422 |
|
---|
| 423 | static void driReportDamage(__DRIdrawable *pdp,
|
---|
| 424 | struct drm_clip_rect *pClipRects, int numClipRects)
|
---|
| 425 | {
|
---|
| 426 | __DRIscreen *psp = pdp->driScreenPriv;
|
---|
| 427 |
|
---|
| 428 | /* Check that we actually have the new damage report method */
|
---|
| 429 | if (psp->dri2.enabled) {
|
---|
| 430 | (*psp->dri2.loader->postDamage)(pdp,
|
---|
| 431 | pClipRects,
|
---|
| 432 | numClipRects,
|
---|
| 433 | pdp->loaderPrivate);
|
---|
| 434 | } else if (psp->damage) {
|
---|
| 435 | /* Report the damage. Currently, all our drivers draw
|
---|
| 436 | * directly to the front buffer, so we report the damage there
|
---|
| 437 | * rather than to the backing storein (if any).
|
---|
| 438 | */
|
---|
| 439 | (*psp->damage->reportDamage)(pdp,
|
---|
| 440 | pdp->x, pdp->y,
|
---|
| 441 | pClipRects, numClipRects,
|
---|
| 442 | GL_TRUE, pdp->loaderPrivate);
|
---|
| 443 | }
|
---|
| 444 | }
|
---|
| 445 |
|
---|
| 446 |
|
---|
| 447 | /**
|
---|
| 448 | * Swap buffers.
|
---|
| 449 | *
|
---|
| 450 | * \param drawablePrivate opaque pointer to the per-drawable private info.
|
---|
| 451 | *
|
---|
| 452 | * \internal
|
---|
| 453 | * This function calls __DRIdrawablePrivate::swapBuffers.
|
---|
| 454 | *
|
---|
| 455 | * Is called directly from glXSwapBuffers().
|
---|
| 456 | */
|
---|
| 457 | static void driSwapBuffers(__DRIdrawable *dPriv)
|
---|
| 458 | {
|
---|
| 459 | __DRIscreen *psp = dPriv->driScreenPriv;
|
---|
| 460 |
|
---|
| 461 | if (!dPriv->numClipRects)
|
---|
| 462 | return;
|
---|
| 463 |
|
---|
| 464 | if (psp->dri2.enabled)
|
---|
| 465 | __driParseEvents(NULL, dPriv);
|
---|
| 466 |
|
---|
| 467 | psp->DriverAPI.SwapBuffers(dPriv);
|
---|
| 468 |
|
---|
| 469 | driReportDamage(dPriv, dPriv->pClipRects, dPriv->numClipRects);
|
---|
| 470 | }
|
---|
| 471 |
|
---|
| 472 | static int driDrawableGetMSC( __DRIscreen *sPriv, __DRIdrawable *dPriv,
|
---|
| 473 | int64_t *msc )
|
---|
| 474 | {
|
---|
| 475 | return sPriv->DriverAPI.GetDrawableMSC(sPriv, dPriv, msc);
|
---|
| 476 | }
|
---|
| 477 |
|
---|
| 478 |
|
---|
| 479 | static int driWaitForMSC(__DRIdrawable *dPriv, int64_t target_msc,
|
---|
| 480 | int64_t divisor, int64_t remainder,
|
---|
| 481 | int64_t * msc, int64_t * sbc)
|
---|
| 482 | {
|
---|
| 483 | __DRIswapInfo sInfo;
|
---|
| 484 | int status;
|
---|
| 485 |
|
---|
| 486 | status = dPriv->driScreenPriv->DriverAPI.WaitForMSC( dPriv, target_msc,
|
---|
| 487 | divisor, remainder,
|
---|
| 488 | msc );
|
---|
| 489 |
|
---|
| 490 | /* GetSwapInfo() may not be provided by the driver if GLX_SGI_video_sync
|
---|
| 491 | * is supported but GLX_OML_sync_control is not. Therefore, don't return
|
---|
| 492 | * an error value if GetSwapInfo() is not implemented.
|
---|
| 493 | */
|
---|
| 494 | if ( status == 0
|
---|
| 495 | && dPriv->driScreenPriv->DriverAPI.GetSwapInfo ) {
|
---|
| 496 | status = dPriv->driScreenPriv->DriverAPI.GetSwapInfo( dPriv, & sInfo );
|
---|
| 497 | *sbc = sInfo.swap_count;
|
---|
| 498 | }
|
---|
| 499 |
|
---|
| 500 | return status;
|
---|
| 501 | }
|
---|
| 502 |
|
---|
| 503 |
|
---|
| 504 | const __DRImediaStreamCounterExtension driMediaStreamCounterExtension = {
|
---|
| 505 | { __DRI_MEDIA_STREAM_COUNTER, __DRI_MEDIA_STREAM_COUNTER_VERSION },
|
---|
| 506 | driWaitForMSC,
|
---|
| 507 | driDrawableGetMSC,
|
---|
| 508 | };
|
---|
| 509 |
|
---|
| 510 |
|
---|
| 511 | static void driCopySubBuffer(__DRIdrawable *dPriv,
|
---|
| 512 | int x, int y, int w, int h)
|
---|
| 513 | {
|
---|
| 514 | drm_clip_rect_t rect;
|
---|
| 515 |
|
---|
| 516 | rect.x1 = x;
|
---|
| 517 | rect.y1 = dPriv->h - y - h;
|
---|
| 518 | rect.x2 = x + w;
|
---|
| 519 | rect.y2 = rect.y1 + h;
|
---|
| 520 | driReportDamage(dPriv, &rect, 1);
|
---|
| 521 |
|
---|
| 522 | dPriv->driScreenPriv->DriverAPI.CopySubBuffer(dPriv, x, y, w, h);
|
---|
| 523 | }
|
---|
| 524 |
|
---|
| 525 | const __DRIcopySubBufferExtension driCopySubBufferExtension = {
|
---|
| 526 | { __DRI_COPY_SUB_BUFFER, __DRI_COPY_SUB_BUFFER_VERSION },
|
---|
| 527 | driCopySubBuffer
|
---|
| 528 | };
|
---|
| 529 |
|
---|
| 530 | static void driSetSwapInterval(__DRIdrawable *dPriv, unsigned int interval)
|
---|
| 531 | {
|
---|
| 532 | dPriv->swap_interval = interval;
|
---|
| 533 | }
|
---|
| 534 |
|
---|
| 535 | static unsigned int driGetSwapInterval(__DRIdrawable *dPriv)
|
---|
| 536 | {
|
---|
| 537 | return dPriv->swap_interval;
|
---|
| 538 | }
|
---|
| 539 |
|
---|
| 540 | const __DRIswapControlExtension driSwapControlExtension = {
|
---|
| 541 | { __DRI_SWAP_CONTROL, __DRI_SWAP_CONTROL_VERSION },
|
---|
| 542 | driSetSwapInterval,
|
---|
| 543 | driGetSwapInterval
|
---|
| 544 | };
|
---|
| 545 |
|
---|
| 546 |
|
---|
| 547 | /**
|
---|
| 548 | * This is called via __DRIscreenRec's createNewDrawable pointer.
|
---|
| 549 | */
|
---|
| 550 | static __DRIdrawable *
|
---|
| 551 | driCreateNewDrawable(__DRIscreen *psp, const __DRIconfig *config,
|
---|
| 552 | drm_drawable_t hwDrawable, int renderType,
|
---|
| 553 | const int *attrs, void *data)
|
---|
| 554 | {
|
---|
| 555 | __DRIdrawable *pdp;
|
---|
| 556 |
|
---|
| 557 | /* Since pbuffers are not yet supported, no drawable attributes are
|
---|
| 558 | * supported either.
|
---|
| 559 | */
|
---|
| 560 | (void) attrs;
|
---|
| 561 |
|
---|
| 562 | pdp = _mesa_malloc(sizeof *pdp);
|
---|
| 563 | if (!pdp) {
|
---|
| 564 | return NULL;
|
---|
| 565 | }
|
---|
| 566 |
|
---|
| 567 | pdp->loaderPrivate = data;
|
---|
| 568 | pdp->hHWDrawable = hwDrawable;
|
---|
| 569 | pdp->refcount = 0;
|
---|
| 570 | pdp->pStamp = NULL;
|
---|
| 571 | pdp->lastStamp = 0;
|
---|
| 572 | pdp->index = 0;
|
---|
| 573 | pdp->x = 0;
|
---|
| 574 | pdp->y = 0;
|
---|
| 575 | pdp->w = 0;
|
---|
| 576 | pdp->h = 0;
|
---|
| 577 | pdp->numClipRects = 0;
|
---|
| 578 | pdp->numBackClipRects = 0;
|
---|
| 579 | pdp->pClipRects = NULL;
|
---|
| 580 | pdp->pBackClipRects = NULL;
|
---|
| 581 | pdp->vblSeq = 0;
|
---|
| 582 | pdp->vblFlags = 0;
|
---|
| 583 |
|
---|
| 584 | pdp->driScreenPriv = psp;
|
---|
| 585 | pdp->driContextPriv = &psp->dummyContextPriv;
|
---|
| 586 |
|
---|
| 587 | if (!(*psp->DriverAPI.CreateBuffer)(psp, pdp, &config->modes,
|
---|
| 588 | renderType == GLX_PIXMAP_BIT)) {
|
---|
| 589 | _mesa_free(pdp);
|
---|
| 590 | return NULL;
|
---|
| 591 | }
|
---|
| 592 |
|
---|
| 593 | pdp->msc_base = 0;
|
---|
| 594 |
|
---|
| 595 | /* This special default value is replaced with the configured
|
---|
| 596 | * default value when the drawable is first bound to a direct
|
---|
| 597 | * rendering context.
|
---|
| 598 | */
|
---|
| 599 | pdp->swap_interval = (unsigned)-1;
|
---|
| 600 |
|
---|
| 601 | return pdp;
|
---|
| 602 | }
|
---|
| 603 |
|
---|
| 604 |
|
---|
| 605 | static __DRIdrawable *
|
---|
| 606 | dri2CreateNewDrawable(__DRIscreen *screen, const __DRIconfig *config,
|
---|
| 607 | unsigned int drawable_id, unsigned int head, void *data)
|
---|
| 608 | {
|
---|
| 609 | __DRIdrawable *pdraw;
|
---|
| 610 |
|
---|
| 611 | pdraw = driCreateNewDrawable(screen, config, 0, 0, NULL, data);
|
---|
| 612 | if (!pdraw)
|
---|
| 613 | return NULL;
|
---|
| 614 |
|
---|
| 615 | pdraw->dri2.drawable_id = drawable_id;
|
---|
| 616 | pdraw->dri2.tail = head;
|
---|
| 617 | pdraw->pBackClipRects = _mesa_malloc(sizeof *pdraw->pBackClipRects);
|
---|
| 618 |
|
---|
| 619 | return pdraw;
|
---|
| 620 | }
|
---|
| 621 |
|
---|
| 622 |
|
---|
| 623 | static void
|
---|
| 624 | driDestroyDrawable(__DRIdrawable *pdp)
|
---|
| 625 | {
|
---|
| 626 | __DRIscreenPrivate *psp;
|
---|
| 627 |
|
---|
| 628 | if (pdp) {
|
---|
| 629 | psp = pdp->driScreenPriv;
|
---|
| 630 | (*psp->DriverAPI.DestroyBuffer)(pdp);
|
---|
| 631 | if (pdp->pClipRects) {
|
---|
| 632 | _mesa_free(pdp->pClipRects);
|
---|
| 633 | pdp->pClipRects = NULL;
|
---|
| 634 | }
|
---|
| 635 | if (pdp->pBackClipRects) {
|
---|
| 636 | _mesa_free(pdp->pBackClipRects);
|
---|
| 637 | pdp->pBackClipRects = NULL;
|
---|
| 638 | }
|
---|
| 639 | _mesa_free(pdp);
|
---|
| 640 | }
|
---|
| 641 | }
|
---|
| 642 |
|
---|
| 643 | /*@}*/
|
---|
| 644 |
|
---|
| 645 |
|
---|
| 646 | /*****************************************************************/
|
---|
| 647 | /** \name Context handling functions */
|
---|
| 648 | /*****************************************************************/
|
---|
| 649 | /*@{*/
|
---|
| 650 |
|
---|
| 651 | /**
|
---|
| 652 | * Destroy the per-context private information.
|
---|
| 653 | *
|
---|
| 654 | * \internal
|
---|
| 655 | * This function calls __DriverAPIRec::DestroyContext on \p contextPrivate, calls
|
---|
| 656 | * drmDestroyContext(), and finally frees \p contextPrivate.
|
---|
| 657 | */
|
---|
| 658 | static void
|
---|
| 659 | driDestroyContext(__DRIcontext *pcp)
|
---|
| 660 | {
|
---|
| 661 | if (pcp) {
|
---|
| 662 | (*pcp->driScreenPriv->DriverAPI.DestroyContext)(pcp);
|
---|
| 663 | _mesa_free(pcp);
|
---|
| 664 | }
|
---|
| 665 | }
|
---|
| 666 |
|
---|
| 667 |
|
---|
| 668 | /**
|
---|
| 669 | * Create the per-drawable private driver information.
|
---|
| 670 | *
|
---|
| 671 | * \param render_type Type of rendering target. \c GLX_RGBA is the only
|
---|
| 672 | * type likely to ever be supported for direct-rendering.
|
---|
| 673 | * \param shared Context with which to share textures, etc. or NULL
|
---|
| 674 | *
|
---|
| 675 | * \returns An opaque pointer to the per-context private information on
|
---|
| 676 | * success, or \c NULL on failure.
|
---|
| 677 | *
|
---|
| 678 | * \internal
|
---|
| 679 | * This function allocates and fills a __DRIcontextPrivateRec structure. It
|
---|
| 680 | * performs some device independent initialization and passes all the
|
---|
[33540] | 681 | * relevant information to __DriverAPIRec::CreateContext to create the
|
---|
[27866] | 682 | * context.
|
---|
| 683 | *
|
---|
| 684 | */
|
---|
| 685 | static __DRIcontext *
|
---|
| 686 | driCreateNewContext(__DRIscreen *psp, const __DRIconfig *config,
|
---|
| 687 | int render_type, __DRIcontext *shared,
|
---|
| 688 | drm_context_t hwContext, void *data)
|
---|
| 689 | {
|
---|
| 690 | __DRIcontext *pcp;
|
---|
| 691 | void * const shareCtx = (shared != NULL) ? shared->driverPrivate : NULL;
|
---|
| 692 |
|
---|
| 693 | pcp = _mesa_malloc(sizeof *pcp);
|
---|
| 694 | if (!pcp)
|
---|
| 695 | return NULL;
|
---|
| 696 |
|
---|
| 697 | pcp->driScreenPriv = psp;
|
---|
| 698 | pcp->driDrawablePriv = NULL;
|
---|
| 699 |
|
---|
| 700 | /* When the first context is created for a screen, initialize a "dummy"
|
---|
| 701 | * context.
|
---|
| 702 | */
|
---|
| 703 |
|
---|
| 704 | if (!psp->dri2.enabled && !psp->dummyContextPriv.driScreenPriv) {
|
---|
| 705 | psp->dummyContextPriv.hHWContext = psp->pSAREA->dummy_context;
|
---|
| 706 | psp->dummyContextPriv.driScreenPriv = psp;
|
---|
| 707 | psp->dummyContextPriv.driDrawablePriv = NULL;
|
---|
| 708 | psp->dummyContextPriv.driverPrivate = NULL;
|
---|
| 709 | /* No other fields should be used! */
|
---|
| 710 | }
|
---|
| 711 |
|
---|
| 712 | pcp->hHWContext = hwContext;
|
---|
| 713 |
|
---|
| 714 | if ( !(*psp->DriverAPI.CreateContext)(&config->modes, pcp, shareCtx) ) {
|
---|
| 715 | _mesa_free(pcp);
|
---|
| 716 | return NULL;
|
---|
| 717 | }
|
---|
| 718 |
|
---|
| 719 | return pcp;
|
---|
| 720 | }
|
---|
| 721 |
|
---|
| 722 |
|
---|
| 723 | static __DRIcontext *
|
---|
| 724 | dri2CreateNewContext(__DRIscreen *screen, const __DRIconfig *config,
|
---|
| 725 | __DRIcontext *shared, void *data)
|
---|
| 726 | {
|
---|
| 727 | drm_context_t hwContext;
|
---|
| 728 | DRM_CAS_RESULT(ret);
|
---|
| 729 |
|
---|
| 730 | /* DRI2 doesn't use kernel with context IDs, we just need an ID that's
|
---|
| 731 | * different from the kernel context ID to make drmLock() happy. */
|
---|
| 732 |
|
---|
| 733 | do {
|
---|
| 734 | hwContext = screen->dri2.lock->next_id;
|
---|
| 735 | DRM_CAS(&screen->dri2.lock->next_id, hwContext, hwContext + 1, ret);
|
---|
| 736 | } while (ret);
|
---|
| 737 |
|
---|
| 738 | return driCreateNewContext(screen, config, 0, shared, hwContext, data);
|
---|
| 739 | }
|
---|
| 740 |
|
---|
| 741 |
|
---|
| 742 | static int
|
---|
| 743 | driCopyContext(__DRIcontext *dest, __DRIcontext *src, unsigned long mask)
|
---|
| 744 | {
|
---|
| 745 | return GL_FALSE;
|
---|
| 746 | }
|
---|
| 747 |
|
---|
| 748 | /*@}*/
|
---|
| 749 |
|
---|
| 750 |
|
---|
| 751 | /*****************************************************************/
|
---|
| 752 | /** \name Screen handling functions */
|
---|
| 753 | /*****************************************************************/
|
---|
| 754 | /*@{*/
|
---|
| 755 |
|
---|
| 756 | /**
|
---|
| 757 | * Destroy the per-screen private information.
|
---|
| 758 | *
|
---|
| 759 | * \internal
|
---|
| 760 | * This function calls __DriverAPIRec::DestroyScreen on \p screenPrivate, calls
|
---|
| 761 | * drmClose(), and finally frees \p screenPrivate.
|
---|
| 762 | */
|
---|
| 763 | static void driDestroyScreen(__DRIscreen *psp)
|
---|
| 764 | {
|
---|
| 765 | if (psp) {
|
---|
| 766 | /* No interaction with the X-server is possible at this point. This
|
---|
| 767 | * routine is called after XCloseDisplay, so there is no protocol
|
---|
| 768 | * stream open to the X-server anymore.
|
---|
| 769 | */
|
---|
| 770 |
|
---|
| 771 | if (psp->DriverAPI.DestroyScreen)
|
---|
| 772 | (*psp->DriverAPI.DestroyScreen)(psp);
|
---|
| 773 |
|
---|
| 774 | if (psp->dri2.enabled) {
|
---|
| 775 | #ifdef TTM_API
|
---|
| 776 | drmBOUnmap(psp->fd, &psp->dri2.sareaBO);
|
---|
| 777 | drmBOUnreference(psp->fd, &psp->dri2.sareaBO);
|
---|
| 778 | #endif
|
---|
| 779 | } else {
|
---|
| 780 | (void)drmUnmap((drmAddress)psp->pSAREA, SAREA_MAX);
|
---|
| 781 | (void)drmUnmap((drmAddress)psp->pFB, psp->fbSize);
|
---|
| 782 | (void)drmCloseOnce(psp->fd);
|
---|
| 783 | }
|
---|
| 784 |
|
---|
| 785 | _mesa_free(psp);
|
---|
| 786 | }
|
---|
| 787 | }
|
---|
| 788 |
|
---|
| 789 | static void
|
---|
| 790 | setupLoaderExtensions(__DRIscreen *psp,
|
---|
| 791 | const __DRIextension **extensions)
|
---|
| 792 | {
|
---|
| 793 | int i;
|
---|
| 794 |
|
---|
| 795 | for (i = 0; extensions[i]; i++) {
|
---|
| 796 | if (strcmp(extensions[i]->name, __DRI_GET_DRAWABLE_INFO) == 0)
|
---|
| 797 | psp->getDrawableInfo = (__DRIgetDrawableInfoExtension *) extensions[i];
|
---|
| 798 | if (strcmp(extensions[i]->name, __DRI_DAMAGE) == 0)
|
---|
| 799 | psp->damage = (__DRIdamageExtension *) extensions[i];
|
---|
| 800 | if (strcmp(extensions[i]->name, __DRI_SYSTEM_TIME) == 0)
|
---|
| 801 | psp->systemTime = (__DRIsystemTimeExtension *) extensions[i];
|
---|
| 802 | if (strcmp(extensions[i]->name, __DRI_LOADER) == 0)
|
---|
| 803 | psp->dri2.loader = (__DRIloaderExtension *) extensions[i];
|
---|
| 804 | }
|
---|
| 805 | }
|
---|
| 806 |
|
---|
| 807 | /**
|
---|
| 808 | * This is the bootstrap function for the driver. libGL supplies all of the
|
---|
| 809 | * requisite information about the system, and the driver initializes itself.
|
---|
| 810 | * This routine also fills in the linked list pointed to by \c driver_modes
|
---|
| 811 | * with the \c __GLcontextModes that the driver can support for windows or
|
---|
| 812 | * pbuffers.
|
---|
| 813 | *
|
---|
| 814 | * For legacy DRI.
|
---|
| 815 | *
|
---|
| 816 | * \param scrn Index of the screen
|
---|
| 817 | * \param ddx_version Version of the 2D DDX. This may not be meaningful for
|
---|
| 818 | * all drivers.
|
---|
| 819 | * \param dri_version Version of the "server-side" DRI.
|
---|
| 820 | * \param drm_version Version of the kernel DRM.
|
---|
| 821 | * \param frame_buffer Data describing the location and layout of the
|
---|
| 822 | * framebuffer.
|
---|
| 823 | * \param pSAREA Pointer the the SAREA.
|
---|
| 824 | * \param fd Device handle for the DRM.
|
---|
| 825 | * \param extensions ??
|
---|
[33540] | 826 | * \param driver_modes Returns modes supported by the driver
|
---|
[27866] | 827 | * \param loaderPrivate ??
|
---|
| 828 | *
|
---|
| 829 | * \note There is no need to check the minimum API version in this
|
---|
| 830 | * function. Since the name of this function is versioned, it is
|
---|
| 831 | * impossible for a loader that is too old to even load this driver.
|
---|
| 832 | */
|
---|
| 833 | static __DRIscreen *
|
---|
| 834 | driCreateNewScreen(int scrn,
|
---|
| 835 | const __DRIversion *ddx_version,
|
---|
| 836 | const __DRIversion *dri_version,
|
---|
| 837 | const __DRIversion *drm_version,
|
---|
| 838 | const __DRIframebuffer *frame_buffer,
|
---|
| 839 | drmAddress pSAREA, int fd,
|
---|
| 840 | const __DRIextension **extensions,
|
---|
| 841 | const __DRIconfig ***driver_modes,
|
---|
| 842 | void *loaderPrivate)
|
---|
| 843 | {
|
---|
| 844 | static const __DRIextension *emptyExtensionList[] = { NULL };
|
---|
| 845 | __DRIscreen *psp;
|
---|
| 846 |
|
---|
| 847 | psp = _mesa_malloc(sizeof *psp);
|
---|
| 848 | if (!psp)
|
---|
| 849 | return NULL;
|
---|
| 850 |
|
---|
| 851 | setupLoaderExtensions(psp, extensions);
|
---|
| 852 |
|
---|
| 853 | /*
|
---|
| 854 | ** NOT_DONE: This is used by the X server to detect when the client
|
---|
| 855 | ** has died while holding the drawable lock. The client sets the
|
---|
| 856 | ** drawable lock to this value.
|
---|
| 857 | */
|
---|
| 858 | psp->drawLockID = 1;
|
---|
| 859 |
|
---|
| 860 | psp->drm_version = *drm_version;
|
---|
| 861 | psp->ddx_version = *ddx_version;
|
---|
| 862 | psp->dri_version = *dri_version;
|
---|
| 863 |
|
---|
| 864 | psp->pSAREA = pSAREA;
|
---|
| 865 | psp->lock = (drmLock *) &psp->pSAREA->lock;
|
---|
| 866 |
|
---|
| 867 | psp->pFB = frame_buffer->base;
|
---|
| 868 | psp->fbSize = frame_buffer->size;
|
---|
| 869 | psp->fbStride = frame_buffer->stride;
|
---|
| 870 | psp->fbWidth = frame_buffer->width;
|
---|
| 871 | psp->fbHeight = frame_buffer->height;
|
---|
| 872 | psp->devPrivSize = frame_buffer->dev_priv_size;
|
---|
| 873 | psp->pDevPriv = frame_buffer->dev_priv;
|
---|
| 874 | psp->fbBPP = psp->fbStride * 8 / frame_buffer->width;
|
---|
| 875 |
|
---|
| 876 | psp->extensions = emptyExtensionList;
|
---|
| 877 | psp->fd = fd;
|
---|
| 878 | psp->myNum = scrn;
|
---|
| 879 | psp->dri2.enabled = GL_FALSE;
|
---|
| 880 |
|
---|
| 881 | /*
|
---|
| 882 | ** Do not init dummy context here; actual initialization will be
|
---|
| 883 | ** done when the first DRI context is created. Init screen priv ptr
|
---|
| 884 | ** to NULL to let CreateContext routine that it needs to be inited.
|
---|
| 885 | */
|
---|
| 886 | psp->dummyContextPriv.driScreenPriv = NULL;
|
---|
| 887 |
|
---|
| 888 | psp->DriverAPI = driDriverAPI;
|
---|
| 889 |
|
---|
| 890 | *driver_modes = driDriverAPI.InitScreen(psp);
|
---|
| 891 | if (*driver_modes == NULL) {
|
---|
| 892 | _mesa_free(psp);
|
---|
| 893 | return NULL;
|
---|
| 894 | }
|
---|
| 895 |
|
---|
| 896 | return psp;
|
---|
| 897 | }
|
---|
| 898 |
|
---|
| 899 |
|
---|
| 900 | /**
|
---|
| 901 | * DRI2
|
---|
| 902 | */
|
---|
| 903 | static __DRIscreen *
|
---|
| 904 | dri2CreateNewScreen(int scrn, int fd, unsigned int sarea_handle,
|
---|
| 905 | const __DRIextension **extensions,
|
---|
| 906 | const __DRIconfig ***driver_configs, void *data)
|
---|
| 907 | {
|
---|
| 908 | #ifdef TTM_API
|
---|
| 909 | static const __DRIextension *emptyExtensionList[] = { NULL };
|
---|
| 910 | __DRIscreen *psp;
|
---|
| 911 | unsigned int *p;
|
---|
| 912 | drmVersionPtr version;
|
---|
| 913 |
|
---|
| 914 | if (driDriverAPI.InitScreen2 == NULL)
|
---|
| 915 | return NULL;
|
---|
| 916 |
|
---|
| 917 | psp = _mesa_malloc(sizeof(*psp));
|
---|
| 918 | if (!psp)
|
---|
| 919 | return NULL;
|
---|
| 920 |
|
---|
| 921 | setupLoaderExtensions(psp, extensions);
|
---|
| 922 |
|
---|
| 923 | version = drmGetVersion(fd);
|
---|
| 924 | if (version) {
|
---|
| 925 | psp->drm_version.major = version->version_major;
|
---|
| 926 | psp->drm_version.minor = version->version_minor;
|
---|
| 927 | psp->drm_version.patch = version->version_patchlevel;
|
---|
| 928 | drmFreeVersion(version);
|
---|
| 929 | }
|
---|
| 930 |
|
---|
| 931 | psp->extensions = emptyExtensionList;
|
---|
| 932 | psp->fd = fd;
|
---|
| 933 | psp->myNum = scrn;
|
---|
| 934 | psp->dri2.enabled = GL_TRUE;
|
---|
| 935 |
|
---|
| 936 | if (drmBOReference(psp->fd, sarea_handle, &psp->dri2.sareaBO)) {
|
---|
| 937 | fprintf(stderr, "Failed to reference DRI2 sarea BO\n");
|
---|
| 938 | _mesa_free(psp);
|
---|
| 939 | return NULL;
|
---|
| 940 | }
|
---|
| 941 |
|
---|
| 942 | if (drmBOMap(psp->fd, &psp->dri2.sareaBO,
|
---|
| 943 | DRM_BO_FLAG_READ | DRM_BO_FLAG_WRITE, 0, &psp->dri2.sarea)) {
|
---|
| 944 | drmBOUnreference(psp->fd, &psp->dri2.sareaBO);
|
---|
| 945 | _mesa_free(psp);
|
---|
| 946 | return NULL;
|
---|
| 947 | }
|
---|
| 948 |
|
---|
| 949 | p = psp->dri2.sarea;
|
---|
| 950 | while (DRI2_SAREA_BLOCK_TYPE(*p)) {
|
---|
| 951 | switch (DRI2_SAREA_BLOCK_TYPE(*p)) {
|
---|
| 952 | case DRI2_SAREA_BLOCK_LOCK:
|
---|
| 953 | psp->dri2.lock = (__DRILock *) p;
|
---|
| 954 | break;
|
---|
| 955 | case DRI2_SAREA_BLOCK_EVENT_BUFFER:
|
---|
| 956 | psp->dri2.buffer = (__DRIEventBuffer *) p;
|
---|
| 957 | break;
|
---|
| 958 | }
|
---|
| 959 | p = DRI2_SAREA_BLOCK_NEXT(p);
|
---|
| 960 | }
|
---|
| 961 |
|
---|
| 962 | psp->lock = (drmLock *) &psp->dri2.lock->lock;
|
---|
| 963 |
|
---|
| 964 | psp->DriverAPI = driDriverAPI;
|
---|
| 965 | *driver_configs = driDriverAPI.InitScreen2(psp);
|
---|
| 966 | if (*driver_configs == NULL) {
|
---|
| 967 | drmBOUnmap(psp->fd, &psp->dri2.sareaBO);
|
---|
| 968 | drmBOUnreference(psp->fd, &psp->dri2.sareaBO);
|
---|
| 969 | _mesa_free(psp);
|
---|
| 970 | return NULL;
|
---|
| 971 | }
|
---|
| 972 |
|
---|
| 973 | psp->DriverAPI = driDriverAPI;
|
---|
| 974 |
|
---|
| 975 | return psp;
|
---|
| 976 | #else
|
---|
| 977 | return NULL;
|
---|
| 978 | #endif
|
---|
| 979 | }
|
---|
| 980 |
|
---|
| 981 | static const __DRIextension **driGetExtensions(__DRIscreen *psp)
|
---|
| 982 | {
|
---|
| 983 | return psp->extensions;
|
---|
| 984 | }
|
---|
| 985 |
|
---|
| 986 | /** Legacy DRI interface */
|
---|
| 987 | const __DRIlegacyExtension driLegacyExtension = {
|
---|
| 988 | { __DRI_LEGACY, __DRI_LEGACY_VERSION },
|
---|
| 989 | driCreateNewScreen,
|
---|
| 990 | driCreateNewDrawable,
|
---|
| 991 | driCreateNewContext
|
---|
| 992 | };
|
---|
| 993 |
|
---|
| 994 | /** DRI2 interface */
|
---|
| 995 | const __DRIcoreExtension driCoreExtension = {
|
---|
| 996 | { __DRI_CORE, __DRI_CORE_VERSION },
|
---|
| 997 | dri2CreateNewScreen,
|
---|
| 998 | driDestroyScreen,
|
---|
| 999 | driGetExtensions,
|
---|
| 1000 | driGetConfigAttrib,
|
---|
| 1001 | driIndexConfigAttrib,
|
---|
| 1002 | dri2CreateNewDrawable,
|
---|
| 1003 | driDestroyDrawable,
|
---|
| 1004 | driSwapBuffers,
|
---|
| 1005 | dri2CreateNewContext,
|
---|
| 1006 | driCopyContext,
|
---|
| 1007 | driDestroyContext,
|
---|
| 1008 | driBindContext,
|
---|
| 1009 | driUnbindContext
|
---|
| 1010 | };
|
---|
| 1011 |
|
---|
| 1012 | /* This is the table of extensions that the loader will dlsym() for. */
|
---|
| 1013 | PUBLIC const __DRIextension *__driDriverExtensions[] = {
|
---|
| 1014 | &driCoreExtension.base,
|
---|
| 1015 | &driLegacyExtension.base,
|
---|
| 1016 | NULL
|
---|
| 1017 | };
|
---|
| 1018 |
|
---|
| 1019 | static int
|
---|
| 1020 | driFrameTracking(__DRIdrawable *drawable, GLboolean enable)
|
---|
| 1021 | {
|
---|
| 1022 | return GLX_BAD_CONTEXT;
|
---|
| 1023 | }
|
---|
| 1024 |
|
---|
| 1025 | static int
|
---|
| 1026 | driQueryFrameTracking(__DRIdrawable *dpriv,
|
---|
| 1027 | int64_t * sbc, int64_t * missedFrames,
|
---|
| 1028 | float * lastMissedUsage, float * usage)
|
---|
| 1029 | {
|
---|
| 1030 | __DRIswapInfo sInfo;
|
---|
| 1031 | int status;
|
---|
| 1032 | int64_t ust;
|
---|
| 1033 | __DRIscreenPrivate *psp = dpriv->driScreenPriv;
|
---|
| 1034 |
|
---|
| 1035 | status = dpriv->driScreenPriv->DriverAPI.GetSwapInfo( dpriv, & sInfo );
|
---|
| 1036 | if ( status == 0 ) {
|
---|
| 1037 | *sbc = sInfo.swap_count;
|
---|
| 1038 | *missedFrames = sInfo.swap_missed_count;
|
---|
| 1039 | *lastMissedUsage = sInfo.swap_missed_usage;
|
---|
| 1040 |
|
---|
| 1041 | (*psp->systemTime->getUST)( & ust );
|
---|
| 1042 | *usage = driCalculateSwapUsage( dpriv, sInfo.swap_ust, ust );
|
---|
| 1043 | }
|
---|
| 1044 |
|
---|
| 1045 | return status;
|
---|
| 1046 | }
|
---|
| 1047 |
|
---|
| 1048 | const __DRIframeTrackingExtension driFrameTrackingExtension = {
|
---|
| 1049 | { __DRI_FRAME_TRACKING, __DRI_FRAME_TRACKING_VERSION },
|
---|
| 1050 | driFrameTracking,
|
---|
| 1051 | driQueryFrameTracking
|
---|
| 1052 | };
|
---|
| 1053 |
|
---|
| 1054 | /**
|
---|
| 1055 | * Calculate amount of swap interval used between GLX buffer swaps.
|
---|
| 1056 | *
|
---|
| 1057 | * The usage value, on the range [0,max], is the fraction of total swap
|
---|
| 1058 | * interval time used between GLX buffer swaps is calculated.
|
---|
| 1059 | *
|
---|
| 1060 | * \f$p = t_d / (i * t_r)\f$
|
---|
| 1061 | *
|
---|
| 1062 | * Where \f$t_d\f$ is the time since the last GLX buffer swap, \f$i\f$ is the
|
---|
| 1063 | * swap interval (as set by \c glXSwapIntervalSGI), and \f$t_r\f$ time
|
---|
| 1064 | * required for a single vertical refresh period (as returned by \c
|
---|
| 1065 | * glXGetMscRateOML).
|
---|
| 1066 | *
|
---|
| 1067 | * See the documentation for the GLX_MESA_swap_frame_usage extension for more
|
---|
| 1068 | * details.
|
---|
| 1069 | *
|
---|
| 1070 | * \param dPriv Pointer to the private drawable structure.
|
---|
| 1071 | * \return If less than a single swap interval time period was required
|
---|
| 1072 | * between GLX buffer swaps, a number greater than 0 and less than
|
---|
| 1073 | * 1.0 is returned. If exactly one swap interval time period is
|
---|
| 1074 | * required, 1.0 is returned, and if more than one is required then
|
---|
| 1075 | * a number greater than 1.0 will be returned.
|
---|
| 1076 | *
|
---|
| 1077 | * \sa glXSwapIntervalSGI glXGetMscRateOML
|
---|
| 1078 | *
|
---|
| 1079 | * \todo Instead of caching the \c glXGetMscRateOML function pointer, would it
|
---|
| 1080 | * be possible to cache the sync rate?
|
---|
| 1081 | */
|
---|
| 1082 | float
|
---|
| 1083 | driCalculateSwapUsage( __DRIdrawablePrivate *dPriv, int64_t last_swap_ust,
|
---|
| 1084 | int64_t current_ust )
|
---|
| 1085 | {
|
---|
| 1086 | int32_t n;
|
---|
| 1087 | int32_t d;
|
---|
| 1088 | int interval;
|
---|
| 1089 | float usage = 1.0;
|
---|
| 1090 | __DRIscreenPrivate *psp = dPriv->driScreenPriv;
|
---|
| 1091 |
|
---|
| 1092 | if ( (*psp->systemTime->getMSCRate)(dPriv, &n, &d, dPriv->loaderPrivate) ) {
|
---|
| 1093 | interval = (dPriv->swap_interval != 0) ? dPriv->swap_interval : 1;
|
---|
| 1094 |
|
---|
| 1095 |
|
---|
| 1096 | /* We want to calculate
|
---|
| 1097 | * (current_UST - last_swap_UST) / (interval * us_per_refresh). We get
|
---|
| 1098 | * current_UST by calling __glXGetUST. last_swap_UST is stored in
|
---|
| 1099 | * dPriv->swap_ust. interval has already been calculated.
|
---|
| 1100 | *
|
---|
| 1101 | * The only tricky part is us_per_refresh. us_per_refresh is
|
---|
| 1102 | * 1000000 / MSC_rate. We know the MSC_rate is n / d. We can flip it
|
---|
| 1103 | * around and say us_per_refresh = 1000000 * d / n. Since this goes in
|
---|
| 1104 | * the denominator of the final calculation, we calculate
|
---|
| 1105 | * (interval * 1000000 * d) and move n into the numerator.
|
---|
| 1106 | */
|
---|
| 1107 |
|
---|
| 1108 | usage = (current_ust - last_swap_ust);
|
---|
| 1109 | usage *= n;
|
---|
| 1110 | usage /= (interval * d);
|
---|
| 1111 | usage /= 1000000.0;
|
---|
| 1112 | }
|
---|
| 1113 |
|
---|
| 1114 | return usage;
|
---|
| 1115 | }
|
---|
| 1116 |
|
---|
| 1117 | /*@}*/
|
---|