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/* $Id: OpenGLTestDarwin.cpp 28800 2010-04-27 08:22:32Z vboxsync $ */
/** @file
* VBox host opengl support test
*/
/*
* Copyright (C) 2009 Oracle Corporation
*
* This file is part of VirtualBox Open Source Edition (OSE), as
* available from http://www.virtualbox.org. This file is free software;
* you can redistribute it and/or modify it under the terms of the GNU
* General Public License (GPL) as published by the Free Software
* Foundation, in version 2 as it comes in the "COPYING" file of the
* VirtualBox OSE distribution. VirtualBox OSE is distributed in the
* hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
*/
#include <OpenGL/OpenGL.h>
#include <ApplicationServices/ApplicationServices.h>
#include <OpenGL/gl.h>
#ifdef VBOX_WITH_COCOA_QT
# include <OpenGL/glu.h>
# include <iprt/log.h>
#endif /* VBOX_WITH_COCOA_QT */
bool is3DAccelerationSupported()
{
CGDirectDisplayID display = CGMainDisplayID ();
CGOpenGLDisplayMask cglDisplayMask = CGDisplayIDToOpenGLDisplayMask (display);
CGLPixelFormatObj pixelFormat = NULL;
GLint numPixelFormats = 0;
CGLPixelFormatAttribute attribs[] = {
kCGLPFADisplayMask,
(CGLPixelFormatAttribute)cglDisplayMask,
kCGLPFAAccelerated,
kCGLPFADoubleBuffer,
kCGLPFAWindow,
(CGLPixelFormatAttribute)NULL
};
display = CGMainDisplayID();
cglDisplayMask = CGDisplayIDToOpenGLDisplayMask(display);
CGLChoosePixelFormat(attribs, &pixelFormat, &numPixelFormats);
if (pixelFormat)
{
CGLContextObj cglContext = 0;
CGLCreateContext(pixelFormat, NULL, &cglContext);
CGLDestroyPixelFormat(pixelFormat);
if (cglContext)
{
GLboolean isSupported = GL_TRUE;
#ifdef VBOX_WITH_COCOA_QT
/* On the Cocoa port we depend on the GL_EXT_framebuffer_object &
* the GL_EXT_texture_rectangle extension. If they are not
* available, disable 3D support. */
CGLSetCurrentContext(cglContext);
const GLubyte* strExt;
strExt = glGetString(GL_EXTENSIONS);
isSupported = gluCheckExtension((const GLubyte*)"GL_EXT_framebuffer_object", strExt);
if (isSupported)
{
isSupported = gluCheckExtension((const GLubyte*)"GL_EXT_texture_rectangle", strExt);
if (!isSupported)
LogRel(("OpenGL Info: GL_EXT_texture_rectangle extension not supported\n"));
}
else
LogRel(("OpenGL Info: GL_EXT_framebuffer_object extension not supported\n"));
#endif /* VBOX_WITH_COCOA_QT */
CGLDestroyContext(cglContext);
return isSupported == GL_TRUE ? true : false;
}
}
return false;
}
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