The Tor Browser / file comparison
comparison: gfx/gl/ForceDiscreteGPUHelperCGL.h
gfx/gl/ForceDiscreteGPUHelperCGL.h
- changeset 0
- 6474c204b198
equal
deleted
inserted
replaced
| -1:000000000000 | 0:11cd938c3370 |
|---|---|
| 1 /* -*- Mode: C++; tab-width: 20; indent-tabs-mode: nil; c-basic-offset: 4 -*- | |
| 2 * This Source Code Form is subject to the terms of the Mozilla Public | |
| 3 * License, v. 2.0. If a copy of the MPL was not distributed with this | |
| 4 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ | |
| 5 | |
| 6 #ifndef ForceDiscreteGPUHelperCGL_h_ | |
| 7 #define ForceDiscreteGPUHelperCGL_h_ | |
| 8 | |
| 9 #include <OpenGL/OpenGL.h> | |
| 10 | |
| 11 /** This RAII helper guarantees that we're on the discrete GPU during its lifetime. | |
| 12 * | |
| 13 * As long as any ForceDiscreteGPUHelperCGL object is alive, we're on the discrete GPU. | |
| 14 */ | |
| 15 class ForceDiscreteGPUHelperCGL | |
| 16 { | |
| 17 CGLPixelFormatObj mPixelFormatObj; | |
| 18 | |
| 19 public: | |
| 20 ForceDiscreteGPUHelperCGL() | |
| 21 { | |
| 22 // the code in this function is taken from Chromium, src/ui/gfx/gl/gl_context_cgl.cc, r122013 | |
| 23 // BSD-style license, (c) The Chromium Authors | |
| 24 CGLPixelFormatAttribute attribs[1]; | |
| 25 attribs[0] = static_cast<CGLPixelFormatAttribute>(0); | |
| 26 GLint num_pixel_formats = 0; | |
| 27 CGLChoosePixelFormat(attribs, &mPixelFormatObj, &num_pixel_formats); | |
| 28 } | |
| 29 | |
| 30 ~ForceDiscreteGPUHelperCGL() | |
| 31 { | |
| 32 CGLReleasePixelFormat(mPixelFormatObj); | |
| 33 } | |
| 34 }; | |
| 35 | |
| 36 #endif // ForceDiscreteGPUHelperCGL_h_ |
