ui/gl/gl_context_cgl.h

   1 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #ifndef UI_GL_GL_CONTEXT_CGL_H_
   6 #define UI_GL_GL_CONTEXT_CGL_H_
   7
   8 #include <OpenGL/CGLTypes.h>
   9
  10 #include "ui/gl/gl_context.h"
  11
  12 namespace gfx {
  13
  14 class GLSurface;
  15
  16 // Encapsulates a CGL OpenGL context.
  17 class GLContextCGL : public GLContext {
  18  public:
  19   explicit GLContextCGL(GLShareGroup* share_group);
  20
  21   // Implement GLContext.
  22   virtual bool Initialize(GLSurface* compatible_surface,
  23                           GpuPreference gpu_preference) OVERRIDE;
  24   virtual void Destroy() OVERRIDE;
  25   virtual bool MakeCurrent(GLSurface* surface) OVERRIDE;
  26   virtual void ReleaseCurrent(GLSurface* surface) OVERRIDE;
  27   virtual bool IsCurrent(GLSurface* surface) OVERRIDE;
  28   virtual void* GetHandle() OVERRIDE;
  29   virtual void SetSwapInterval(int interval) OVERRIDE;
  30
  31  protected:
  32   virtual ~GLContextCGL();
  33
  34  private:
  35   // Expose ForceUseOfDiscreteGPU only to GLContext implementation.
  36   friend class GLContext;
  37
  38   GpuPreference GetGpuPreference();
  39
  40   // Helper for dual-GPU support on systems where this is necessary
  41   // for stability reasons.
  42   static void ForceUseOfDiscreteGPU();
  43
  44   void* context_;
  45   GpuPreference gpu_preference_;
  46
  47   CGLPixelFormatObj discrete_pixelformat_;
  48
  49   DISALLOW_COPY_AND_ASSIGN(GLContextCGL);
  50 };
  51
  52 }  // namespace gfx
  53
  54 #endif  // UI_GL_GL_CONTEXT_CGL_H_