tenfourfox/gfx/gl/ForceDiscreteGPUHelperCGL.h
Cameron Kaiser c9b2922b70 hello FPR
2017-04-19 00:56:45 -07:00

44 lines
1.2 KiB
C++

/* -*- Mode: C++; tab-width: 20; indent-tabs-mode: nil; c-basic-offset: 4 -*-
* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#ifndef ForceDiscreteGPUHelperCGL_h_
#define ForceDiscreteGPUHelperCGL_h_
#include <OpenGL/OpenGL.h>
/** This RAII helper guarantees that we're on the discrete GPU during its lifetime.
*
* As long as any ForceDiscreteGPUHelperCGL object is alive, we're on the discrete GPU.
*/
class ForceDiscreteGPUHelperCGL
{
#if(0)
CGLPixelFormatObj mPixelFormatObj;
#endif
public:
ForceDiscreteGPUHelperCGL()
{
// This doesn't work in 10.4.
#if(0)
// the code in this function is taken from Chromium, src/ui/gfx/gl/gl_context_cgl.cc, r122013
// BSD-style license, (c) The Chromium Authors
CGLPixelFormatAttribute attribs[1];
attribs[0] = static_cast<CGLPixelFormatAttribute>(0);
GLint num_pixel_formats = 0;
CGLChoosePixelFormat(attribs, &mPixelFormatObj, &num_pixel_formats);
#endif
}
~ForceDiscreteGPUHelperCGL()
{
#if(0)
CGLReleasePixelFormat(mPixelFormatObj);
#endif
}
};
#endif // ForceDiscreteGPUHelperCGL_h_