| 1 | /* $Id: VBox2DHelpers.cpp 72057 2018-04-27 11:55:52Z vboxsync $ */
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| 2 | /** @file
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| 3 | * VBox Qt GUI - 2D Video Acceleration helpers implementation.
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| 4 | */
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| 5 |
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| 6 | /*
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| 7 | * Copyright (C) 2009-2018 Oracle Corporation
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| 8 | *
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| 9 | * This file is part of VirtualBox Open Source Edition (OSE), as
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| 10 | * available from http://www.virtualbox.org. This file is free software;
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| 11 | * you can redistribute it and/or modify it under the terms of the GNU
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| 12 | * General Public License (GPL) as published by the Free Software
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| 13 | * Foundation, in version 2 as it comes in the "COPYING" file of the
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| 14 | * VirtualBox OSE distribution. VirtualBox OSE is distributed in the
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| 15 | * hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
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| 16 | */
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| 17 |
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| 18 |
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| 19 | #if defined(VBOX_GUI_USE_QGL) || defined(VBOX_WITH_VIDEOHWACCEL)
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| 20 |
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| 21 | #ifdef VBOX_WITH_PRECOMPILED_HEADERS
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| 22 | # include <precomp.h>
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| 23 | #else /* !VBOX_WITH_PRECOMPILED_HEADERS */
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| 24 |
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| 25 | # define LOG_GROUP LOG_GROUP_GUI
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| 26 |
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| 27 | // WORKAROUND:
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| 28 | // QGLWidget drags in Windows.h and stdint.h
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| 29 | # ifdef RT_OS_WINDOWS
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| 30 | # include <iprt/win/windows.h>
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| 31 | # include <iprt/stdint.h>
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| 32 | # endif
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| 33 |
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| 34 | /* Qt includes: */
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| 35 | # include <QGLWidget>
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| 36 |
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| 37 | /* GUI includes: */
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| 38 | #include "VBox2DHelpers.h"
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| 39 |
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| 40 | /* Other VBox includes: */
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| 41 | # include <VBox/VBoxGL2D.h>
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| 42 |
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| 43 | #endif /* !VBOX_WITH_PRECOMPILED_HEADERS */
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| 44 |
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| 45 |
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| 46 | /*********************************************************************************************************************************
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| 47 | * Global Variables *
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| 48 | *********************************************************************************************************************************/
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| 49 |
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| 50 | static bool g_fVBoxVHWAChecked = false;
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| 51 | static bool g_fVBoxVHWASupported = false;
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| 52 |
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| 53 |
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| 54 | /*********************************************************************************************************************************
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| 55 | * Namespace VBox2DHelpers implementation. *
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| 56 | *********************************************************************************************************************************/
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| 57 |
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| 58 | bool VBox2DHelpers::isAcceleration2DVideoAvailable()
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| 59 | {
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| 60 | if (!g_fVBoxVHWAChecked)
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| 61 | {
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| 62 | g_fVBoxVHWAChecked = true;
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| 63 | g_fVBoxVHWASupported = VBoxVHWAInfo::checkVHWASupport();
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| 64 | }
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| 65 | return g_fVBoxVHWASupported;
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| 66 | }
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| 67 |
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| 68 | quint64 VBox2DHelpers::required2DOffscreenVideoMemory()
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| 69 | {
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| 70 | /* HDTV == 1920x1080 ~ 2M
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| 71 | * for the 4:2:2 formats each pixel is 2Bytes
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| 72 | * so each frame may be 4MiB
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| 73 | * so for triple-buffering we would need 12 MiB */
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| 74 | return _1M * 12;
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| 75 | }
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| 76 |
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| 77 | #endif /* VBOX_GUI_USE_QGL || VBOX_WITH_VIDEOHWACCEL */
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