use accelerated compositing in fullscreen pepper

chrome/renderer/render_widget_fullscreen_pepper.h

 // Copyright (c) 2010 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 CHROME_RENDERER_RENDER_WIDGET_FULLSCREEN_PEPPER_H_
 #define CHROME_RENDERER_RENDER_WIDGET_FULLSCREEN_PEPPER_H_
 
 #include "chrome/renderer/render_widget_fullscreen.h"
 #include "third_party/WebKit/WebKit/chromium/public/WebWidget.h"
+#include "webkit/plugins/ppapi/fullscreen_container.h"
 
 namespace webkit {
 namespace ppapi {
 
 class PluginInstance;
-class FullscreenContainer;
 
 }  // namespace ppapi
 }  // namespace webkit
 
+namespace ggl {
+class Context;
+}  // namespace ggl
+
 // A RenderWidget that hosts a fullscreen pepper plugin. This provides a
 // FullscreenContainer that the plugin instance can callback into to e.g.
 // invalidate rects.
-class RenderWidgetFullscreenPepper : public RenderWidgetFullscreen {
+class RenderWidgetFullscreenPepper : public RenderWidgetFullscreen,
+                                     public webkit::ppapi::FullscreenContainer {
  public:
   static RenderWidgetFullscreenPepper* Create(
       int32 opener_id,
       RenderThreadBase* render_thread,
       webkit::ppapi::PluginInstance* plugin);
 
-  // Asks the browser to close this view, which will tear off the window and
-  // close this widget.
-  void SendClose();
+  // pepper::FullscreenContainer API.
+  virtual void Invalidate();
+  virtual void InvalidateRect(const WebKit::WebRect& rect);
+  virtual void ScrollRect(int dx, int dy, const WebKit::WebRect& rect);
+  virtual void Destroy();
+  virtual webkit::ppapi::PluginDelegate::PlatformContext3D* CreateContext3D();
 
-  // Invalidate the whole widget to force a redraw.
-  void GenerateFullRepaint();
-
-  webkit::ppapi::FullscreenContainer* container() const {
-    return container_.get();
-  }
+  ggl::Context* context() const { return context_; }
 
  protected:
   RenderWidgetFullscreenPepper(RenderThreadBase* render_thread,
                                webkit::ppapi::PluginInstance* plugin);
   virtual ~RenderWidgetFullscreenPepper();
 
   // RenderWidget API.
   virtual void DidInitiatePaint();
   virtual void DidFlushPaint();
   virtual void Close();
   virtual webkit::ppapi::PluginInstance* GetBitmapForOptimizedPluginPaint(
       const gfx::Rect& paint_bounds,
       TransportDIB** dib,
       gfx::Rect* location,
       gfx::Rect* clip);
+  virtual void OnResize(const gfx::Size& new_size,
+                        const gfx::Rect& resizer_rect);
 
   // RenderWidgetFullscreen API.
   virtual WebKit::WebWidget* CreateWebWidget();
 
  private:
+  // Creates the GL context for compositing.
+  void CreateContext();
+
+  // Destroys the GL context for compositing.
+  void DestroyContext();
+
+  // Initialize the GL states and resources for compositing.
+  bool InitContext();
+
+  // Checks (and returns) whether accelerated compositing should be on or off,
+  // and notify the browser.
+  bool CheckCompositing();
+
   // The plugin instance this widget wraps.
   webkit::ppapi::PluginInstance* plugin_;
 
-  // The FullscreenContainer that the plugin instance can callback into.
-  scoped_ptr<webkit::ppapi::FullscreenContainer> container_;
+#if defined(OS_MACOSX)
+  gfx::PluginWindowHandle plugin_handle_;
+#endif
+  // GL context for compositing.
+  ggl::Context* context_;
+  unsigned int buffer_;
+  unsigned int program_;
 
   DISALLOW_COPY_AND_ASSIGN(RenderWidgetFullscreenPepper);
 };
 
 #endif  // CHROME_RENDERER_RENDER_WIDGET_FULLSCREEN_PEPPER_H_