| // Copyright 2016 The Chromium Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| #ifndef UI_GL_GL_VISUAL_PICKER_GLX_H_ |
| #define UI_GL_GL_VISUAL_PICKER_GLX_H_ |
| |
| #include <vector> |
| |
| #include "base/macros.h" |
| #include "ui/gfx/x/x11.h" |
| #include "ui/gfx/x/x11_types.h" |
| #include "ui/gl/gl_export.h" |
| |
| namespace base { |
| template <typename T> |
| struct DefaultSingletonTraits; |
| } |
| |
| namespace gl { |
| |
| // Picks the best X11 visuals to use for GL. This class is adapted from GTK's |
| // pick_better_visual_for_gl. Tries to find visuals that |
| // 1. Support GL |
| // 2. Support double buffer |
| // 3. Have an alpha channel only if we want one |
| class GL_EXPORT GLVisualPickerGLX { |
| public: |
| static GLVisualPickerGLX* GetInstance(); |
| |
| ~GLVisualPickerGLX(); |
| |
| const XVisualInfo& system_visual() { return system_visual_; } |
| |
| const XVisualInfo& rgba_visual() { return rgba_visual_; } |
| |
| private: |
| friend struct base::DefaultSingletonTraits<GLVisualPickerGLX>; |
| |
| XVisualInfo PickBestGlVisual(const std::vector<XVisualInfo>& visuals, |
| bool want_alpha) const; |
| |
| XVisualInfo PickBestSystemVisual( |
| const std::vector<XVisualInfo>& visuals) const; |
| |
| XVisualInfo PickBestRgbaVisual(const std::vector<XVisualInfo>& visuals) const; |
| |
| XDisplay* display_; |
| |
| bool has_glx_visual_rating_; |
| bool has_glx_multisample_; |
| |
| XVisualInfo system_visual_; |
| XVisualInfo rgba_visual_; |
| |
| GLVisualPickerGLX(); |
| |
| DISALLOW_COPY_AND_ASSIGN(GLVisualPickerGLX); |
| }; |
| |
| } // namespace gl |
| |
| #endif // UI_GL_GL_VISUAL_PICKER_GLX_H_ |