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32 #ifndef WebGLLayerChromium_h
33 #define WebGLLayerChromium_h
35 #if USE(ACCELERATED_COMPOSITING)
37 #include "CanvasLayerChromium.h"
42 class GraphicsContext3D;
43 class WebGLLayerChromiumRateLimitTask;
45 // A Layer containing a WebGL canvas
46 class WebGLLayerChromium : public CanvasLayerChromium {
48 static PassRefPtr<WebGLLayerChromium> create(CCLayerDelegate* = 0);
50 virtual ~WebGLLayerChromium();
52 virtual bool drawsContent() const;
53 virtual void updateCompositorResources(GraphicsContext3D*, TextureAllocator*);
54 void setTextureUpdated();
55 bool paintRenderedResultsToCanvas(ImageBuffer*);
57 void setContext(const GraphicsContext3D* context);
58 GraphicsContext3D* context() { return m_context; }
61 explicit WebGLLayerChromium(CCLayerDelegate*);
62 friend class WebGLLayerChromiumRateLimitTask;
64 GraphicsContext3D* layerRendererContext();
66 void rateLimitContext(Timer<WebGLLayerChromium>*);
68 // GraphicsContext3D::platformLayer has a side-effect of assigning itself
69 // to the layer. Because of that GraphicsContext3D's destructor will reset
70 // layer's context to 0.
71 GraphicsContext3D* m_context;
72 bool m_textureChanged;
73 bool m_contextSupportsRateLimitingExtension;
74 Timer<WebGLLayerChromium> m_rateLimitingTimer;
75 bool m_textureUpdated;
79 #endif // USE(ACCELERATED_COMPOSITING)