Initial import attempt, just to play with. Many things disabled/removed

ui/cc/LayerRendererChromium.h

Index: ui/cc/LayerRendererChromium.h
diff --git a/ui/cc/LayerRendererChromium.h b/ui/cc/LayerRendererChromium.h
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+/*
+ * Copyright (C) 2010 Google Inc. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met:
+ *
+ *     * Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ *     * Redistributions in binary form must reproduce the above
+ * copyright notice, this list of conditions and the following disclaimer
+ * in the documentation and/or other materials provided with the
+ * distribution.
+ *     * Neither the name of Google Inc. nor the names of its
+ * contributors may be used to endorse or promote products derived from
+ * this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+
+#ifndef LayerRendererChromium_h
+#define LayerRendererChromium_h
+
+#if USE(ACCELERATED_COMPOSITING)
+
+#include "Extensions3DChromium.h"
+#include "TextureCopier.h"
+#include "TrackingTextureAllocator.h"
+#include "cc/CCRenderer.h"
+#include <wtf/PassOwnPtr.h>
+
+namespace WebKit {
+class WebGraphicsContext3D;
+}
+
+namespace WebCore {
+
+class CCCheckerboardDrawQuad;
+class CCDebugBorderDrawQuad;
+class CCDrawQuad;
+class CCIOSurfaceDrawQuad;
+class CCRenderPassDrawQuad;
+class CCSolidColorDrawQuad;
+class CCStreamVideoDrawQuad;
+class CCTextureDrawQuad;
+class CCTileDrawQuad;
+class CCYUVVideoDrawQuad;
+class GeometryBinding;
+class ManagedTexture;
+class ScopedEnsureFramebufferAllocation;
+
+// Class that handles drawing of composited render layers using GL.
+class LayerRendererChromium : public CCRenderer,
+                              public WebKit::WebGraphicsContext3D::WebGraphicsSwapBuffersCompleteCallbackCHROMIUM,
+                              public WebKit::WebGraphicsContext3D::WebGraphicsMemoryAllocationChangedCallbackCHROMIUM ,
+                              public WebKit::WebGraphicsContext3D::WebGraphicsContextLostCallback {
+    WTF_MAKE_NONCOPYABLE(LayerRendererChromium);
+public:
+    static PassOwnPtr<LayerRendererChromium> create(CCRendererClient*, WebKit::WebGraphicsContext3D*, TextureUploaderOption);
+
+    virtual ~LayerRendererChromium();
+
+    virtual const LayerRendererCapabilities& capabilities() const OVERRIDE { return m_capabilities; }
+
+    WebKit::WebGraphicsContext3D* context();
+
+    virtual void viewportChanged() OVERRIDE;
+
+    const FloatQuad& sharedGeometryQuad() const { return m_sharedGeometryQuad; }
+
+    virtual void decideRenderPassAllocationsForFrame(const CCRenderPassList&) OVERRIDE;
+    virtual void beginDrawingFrame(const CCRenderPass* defaultRenderPass) OVERRIDE;
+    virtual void drawRenderPass(const CCRenderPass*, const FloatRect& framebufferDamageRect) OVERRIDE;
+    virtual void finishDrawingFrame() OVERRIDE;
+
+    virtual void drawHeadsUpDisplay(ManagedTexture*, const IntSize& hudSize) OVERRIDE;
+
+    // waits for rendering to finish
+    virtual void finish() OVERRIDE;
+
+    virtual void doNoOp() OVERRIDE;
+    // puts backbuffer onscreen
+    virtual bool swapBuffers(const IntRect& subBuffer) OVERRIDE;
+
+    static void debugGLCall(WebKit::WebGraphicsContext3D*, const char* command, const char* file, int line);
+
+    const GeometryBinding* sharedGeometry() const { return m_sharedGeometry.get(); }
+
+    virtual void getFramebufferPixels(void *pixels, const IntRect&) OVERRIDE;
+    bool getFramebufferTexture(ManagedTexture*, const IntRect& deviceRect);
+
+    virtual TextureManager* implTextureManager() const OVERRIDE { return m_implTextureManager.get(); }
+    virtual TextureCopier* textureCopier() const OVERRIDE { return m_textureCopier.get(); }
+    virtual TextureUploader* textureUploader() const OVERRIDE { return m_textureUploader.get(); }
+    virtual TextureAllocator* implTextureAllocator() const OVERRIDE { return m_implTextureAllocator.get(); }
+    virtual TextureAllocator* contentsTextureAllocator() const OVERRIDE { return m_contentsTextureAllocator.get(); }
+
+    virtual void setScissorToRect(const IntRect&) OVERRIDE;
+
+    virtual bool isContextLost() OVERRIDE;
+
+    virtual void setVisible(bool) OVERRIDE;
+
+    void drawTexturedQuad(const WebKit::WebTransformationMatrix& layerMatrix,
+                          float width, float height, float opacity, const FloatQuad&,
+                          int matrixLocation, int alphaLocation, int quadLocation);
+    void copyTextureToFramebuffer(int textureId, const IntSize& bounds, const WebKit::WebTransformationMatrix& drawMatrix);
+
+protected:
+    LayerRendererChromium(CCRendererClient*, WebKit::WebGraphicsContext3D*, TextureUploaderOption);
+
+    bool isFramebufferDiscarded() const { return m_isFramebufferDiscarded; }
+    bool initialize();
+
+private:
+    static void toGLMatrix(float*, const WebKit::WebTransformationMatrix&);
+
+    void drawQuad(const CCDrawQuad*);
+    void drawCheckerboardQuad(const CCCheckerboardDrawQuad*);
+    void drawDebugBorderQuad(const CCDebugBorderDrawQuad*);
+    void drawBackgroundFilters(const CCRenderPassDrawQuad*, const WebKit::WebTransformationMatrix& deviceTransform);
+    void drawRenderPassQuad(const CCRenderPassDrawQuad*);
+    void drawSolidColorQuad(const CCSolidColorDrawQuad*);
+    void drawStreamVideoQuad(const CCStreamVideoDrawQuad*);
+    void drawTextureQuad(const CCTextureDrawQuad*);
+    void drawIOSurfaceQuad(const CCIOSurfaceDrawQuad*);
+    void drawTileQuad(const CCTileDrawQuad*);
+    void drawYUVVideoQuad(const CCYUVVideoDrawQuad*);
+
+    void setDrawFramebufferRect(const IntRect&, bool flipY);
+
+    // The current drawing target is either a RenderPass or ManagedTexture. Use these functions to switch to a new drawing target.
+    bool useRenderPass(const CCRenderPass*);
+    bool useManagedTexture(ManagedTexture*, const IntRect& viewportRect);
+    bool isCurrentRenderPass(const CCRenderPass*);
+
+    bool bindFramebufferToTexture(ManagedTexture*, const IntRect& viewportRect);
+
+    void clearRenderPass(const CCRenderPass*, const FloatRect& framebufferDamageRect);
+
+    void releaseRenderPassTextures();
+
+    bool makeContextCurrent();
+
+    bool initializeSharedObjects();
+    void cleanupSharedObjects();
+
+    // WebKit::WebGraphicsContext3D::WebGraphicsSwapBuffersCompleteCallbackCHROMIUM implementation.
+    virtual void onSwapBuffersComplete() OVERRIDE;
+
+    // WebKit::WebGraphicsContext3D::WebGraphicsMemoryAllocationChangedCallbackCHROMIUM implementation.
+    virtual void onMemoryAllocationChanged(WebKit::WebGraphicsMemoryAllocation) OVERRIDE;
+    void onMemoryAllocationChangedOnImplThread(WebKit::WebGraphicsMemoryAllocation);
+    void discardFramebuffer();
+    void ensureFramebuffer();
+
+    // WebGraphicsContext3D::WebGraphicsContextLostCallback implementation.
+    virtual void onContextLost() OVERRIDE;
+
+    LayerRendererCapabilities m_capabilities;
+
+    const CCRenderPass* m_currentRenderPass;
+    ManagedTexture* m_currentManagedTexture;
+    unsigned m_offscreenFramebufferId;
+
+    OwnPtr<GeometryBinding> m_sharedGeometry;
+    FloatQuad m_sharedGeometryQuad;
+
+    // This block of bindings defines all of the programs used by the compositor itself.
+
+    // Tiled layer shaders.
+    typedef ProgramBinding<VertexShaderTile, FragmentShaderRGBATexAlpha> TileProgram;
+    typedef ProgramBinding<VertexShaderTile, FragmentShaderRGBATexClampAlphaAA> TileProgramAA;
+    typedef ProgramBinding<VertexShaderTile, FragmentShaderRGBATexClampSwizzleAlphaAA> TileProgramSwizzleAA;
+    typedef ProgramBinding<VertexShaderTile, FragmentShaderRGBATexOpaque> TileProgramOpaque;
+    typedef ProgramBinding<VertexShaderTile, FragmentShaderRGBATexSwizzleAlpha> TileProgramSwizzle;
+    typedef ProgramBinding<VertexShaderTile, FragmentShaderRGBATexSwizzleOpaque> TileProgramSwizzleOpaque;
+    typedef ProgramBinding<VertexShaderPosTex, FragmentShaderCheckerboard> TileCheckerboardProgram;
+
+    // Render surface shaders.
+    typedef ProgramBinding<VertexShaderPosTex, FragmentShaderRGBATexAlpha> RenderPassProgram;
+    typedef ProgramBinding<VertexShaderPosTex, FragmentShaderRGBATexAlphaMask> RenderPassMaskProgram;
+    typedef ProgramBinding<VertexShaderQuad, FragmentShaderRGBATexAlphaAA> RenderPassProgramAA;
+    typedef ProgramBinding<VertexShaderQuad, FragmentShaderRGBATexAlphaMaskAA> RenderPassMaskProgramAA;
+
+    // Texture shaders.
+    typedef ProgramBinding<VertexShaderPosTexTransform, FragmentShaderRGBATexAlpha> TextureProgram;
+    typedef ProgramBinding<VertexShaderPosTexTransform, FragmentShaderRGBATexFlipAlpha> TextureProgramFlip;
+    typedef ProgramBinding<VertexShaderPosTexTransform, FragmentShaderRGBATexRectFlipAlpha> TextureIOSurfaceProgram;
+
+    // Video shaders.
+    typedef ProgramBinding<VertexShaderVideoTransform, FragmentShaderOESImageExternal> VideoStreamTextureProgram;
+    typedef ProgramBinding<VertexShaderPosTexYUVStretch, FragmentShaderYUVVideo> VideoYUVProgram;
+
+    // Special purpose / effects shaders.
+    typedef ProgramBinding<VertexShaderPos, FragmentShaderColor> SolidColorProgram;
+
+    // Debugging shaders.
+    typedef ProgramBinding<VertexShaderPosTex, FragmentShaderRGBATexSwizzleAlpha> HeadsUpDisplayProgram;
+
+
+    const TileProgram* tileProgram();
+    const TileProgramOpaque* tileProgramOpaque();
+    const TileProgramAA* tileProgramAA();
+    const TileProgramSwizzle* tileProgramSwizzle();
+    const TileProgramSwizzleOpaque* tileProgramSwizzleOpaque();
+    const TileProgramSwizzleAA* tileProgramSwizzleAA();
+    const TileCheckerboardProgram* tileCheckerboardProgram();
+
+    const RenderPassProgram* renderPassProgram();
+    const RenderPassProgramAA* renderPassProgramAA();
+    const RenderPassMaskProgram* renderPassMaskProgram();
+    const RenderPassMaskProgramAA* renderPassMaskProgramAA();
+
+    const TextureProgram* textureProgram();
+    const TextureProgramFlip* textureProgramFlip();
+    const TextureIOSurfaceProgram* textureIOSurfaceProgram();
+
+    const VideoYUVProgram* videoYUVProgram();
+    const VideoStreamTextureProgram* videoStreamTextureProgram();
+
+    const SolidColorProgram* solidColorProgram();
+
+    const HeadsUpDisplayProgram* headsUpDisplayProgram();
+
+    OwnPtr<TileProgram> m_tileProgram;
+    OwnPtr<TileProgramOpaque> m_tileProgramOpaque;
+    OwnPtr<TileProgramAA> m_tileProgramAA;
+    OwnPtr<TileProgramSwizzle> m_tileProgramSwizzle;
+    OwnPtr<TileProgramSwizzleOpaque> m_tileProgramSwizzleOpaque;
+    OwnPtr<TileProgramSwizzleAA> m_tileProgramSwizzleAA;
+    OwnPtr<TileCheckerboardProgram> m_tileCheckerboardProgram;
+
+    OwnPtr<RenderPassProgram> m_renderPassProgram;
+    OwnPtr<RenderPassProgramAA> m_renderPassProgramAA;
+    OwnPtr<RenderPassMaskProgram> m_renderPassMaskProgram;
+    OwnPtr<RenderPassMaskProgramAA> m_renderPassMaskProgramAA;
+
+    OwnPtr<TextureProgram> m_textureProgram;
+    OwnPtr<TextureProgramFlip> m_textureProgramFlip;
+    OwnPtr<TextureIOSurfaceProgram> m_textureIOSurfaceProgram;
+
+    OwnPtr<VideoYUVProgram> m_videoYUVProgram;
+    OwnPtr<VideoStreamTextureProgram> m_videoStreamTextureProgram;
+
+    OwnPtr<SolidColorProgram> m_solidColorProgram;
+    OwnPtr<HeadsUpDisplayProgram> m_headsUpDisplayProgram;
+
+    OwnPtr<TextureManager> m_implTextureManager;
+    OwnPtr<AcceleratedTextureCopier> m_textureCopier;
+    OwnPtr<TextureUploader> m_textureUploader;
+    OwnPtr<TrackingTextureAllocator> m_contentsTextureAllocator;
+    OwnPtr<TrackingTextureAllocator> m_implTextureAllocator;
+
+    WebKit::WebGraphicsContext3D* m_context;
+
+    const CCRenderPass* m_defaultRenderPass;
+
+    bool m_isViewportChanged;
+    bool m_isFramebufferDiscarded;
+    bool m_visible;
+    TextureUploaderOption m_textureUploaderSetting;
+};
+
+
+// Setting DEBUG_GL_CALLS to 1 will call glGetError() after almost every GL
+// call made by the compositor. Useful for debugging rendering issues but
+// will significantly degrade performance.
+#define DEBUG_GL_CALLS 0
+
+#if DEBUG_GL_CALLS && !defined ( NDEBUG )
+#define GLC(context, x) (x, LayerRendererChromium::debugGLCall(&*context, #x, __FILE__, __LINE__))
+#else
+#define GLC(context, x) (x)
+#endif
+
+
+}
+
+#endif // USE(ACCELERATED_COMPOSITING)
+
+#endif