Support dynamic switching between integrated and discrete GPUs on Mac OS X.

content/renderer/gpu/renderer_gl_context.h

 // Copyright (c) 2011 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.
 
 // This API is consistent with other OpenGL setup APIs like window's WGL
 // and pepper's PGL. This API is used to manage OpenGL RendererGLContexts in the
 // Chrome renderer process in a way that is consistent with other platforms.
 
 #ifndef CONTENT_RENDERER_GPU_RENDERER_GL_CONTEXT_H_
 #define CONTENT_RENDERER_GPU_RENDERER_GL_CONTEXT_H_
 #pragma once
 
 #include "base/callback.h"
 #include "base/memory/ref_counted.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/memory/weak_ptr.h"
 #include "base/threading/non_thread_safe.h"
 #include "build/build_config.h"
+#include "ui/gfx/gl/gpu_preference.h"
 #include "ui/gfx/native_widget_types.h"
 #include "ui/gfx/size.h"
 
 class GpuChannelHost;
 class CommandBufferProxy;
 class GURL;
 class TransportTextureHost;
 
 namespace gpu {
 namespace gles2 {
@@ skipping 71 matching lines @@
   //
   // The render_view_id is currently also only used on Mac OS X.
   // TODO(kbr): clean up the arguments to this function and make them
   // more cross-platform.
   static RendererGLContext* CreateViewContext(
       GpuChannelHost* channel,
       int render_view_id,
       RendererGLContext* share_group,
       const char* allowed_extensions,
       const int32* attrib_list,
-      const GURL& active_arl);
+      const GURL& active_url,
+      gfx::GpuPreference gpu_preference);
 
   // Create a RendererGLContext that renders to an offscreen frame buffer. If
   // parent is not NULL, that RendererGLContext can access a copy of the created
   // RendererGLContext's frame buffer that is updated every time SwapBuffers is
   // called. It is not as general as shared RendererGLContexts in other
   // implementations of OpenGL. If parent is not NULL, it must be used on the
   // same thread as the parent. A child RendererGLContext may not outlive its
   // parent.  attrib_list must be NULL or a NONE-terminated list of
   // attribute/value pairs.
   static RendererGLContext* CreateOffscreenContext(
       GpuChannelHost* channel,
       const gfx::Size& size,
       RendererGLContext* share_group,
       const char* allowed_extensions,
       const int32* attrib_list,
-      const GURL& active_url);
+      const GURL& active_url,
+      gfx::GpuPreference gpu_preference);
 
   // Sets the parent context. If any parent textures have been created for
   // another parent, it is important to delete them before changing the parent.
   bool SetParent(RendererGLContext* parent);
 
   // For an offscreen frame buffer RendererGLContext, return the texture ID with
   // respect to the parent RendererGLContext. Returns zero if RendererGLContext
   // does not have a parent.
   uint32 GetParentTextureId();
 
@@ skipping 41 matching lines @@
 
  private:
   explicit RendererGLContext(GpuChannelHost* channel);
 
   bool Initialize(bool onscreen,
                   int render_view_id,
                   const gfx::Size& size,
                   RendererGLContext* share_group,
                   const char* allowed_extensions,
                   const int32* attrib_list,
-                  const GURL& active_url);
+                  const GURL& active_url,
+                  gfx::GpuPreference gpu_preference);
   void Destroy();
 
   void OnContextLost();
 
   scoped_refptr<GpuChannelHost> channel_;
   base::WeakPtr<RendererGLContext> parent_;
   base::Callback<void(ContextLostReason)> context_lost_callback_;
   uint32 parent_texture_id_;
   CommandBufferProxy* command_buffer_;
   gpu::gles2::GLES2CmdHelper* gles2_helper_;
   int32 transfer_buffer_id_;
   gpu::gles2::GLES2Implementation* gles2_implementation_;
   Error last_error_;
   int frame_number_;
 
   DISALLOW_COPY_AND_ASSIGN(RendererGLContext);
 };
 
 #endif  // CONTENT_RENDERER_GPU_RENDERER_GL_CONTEXT_H_