1 /* 2 * Copyright (C) 2010 Google Inc. All rights reserved. 3 * 4 * Redistribution and use in source and binary forms, with or without 5 * modification, are permitted provided that the following conditions are 6 * met: 7 * 8 * * Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * * Redistributions in binary form must reproduce the above 11 * copyright notice, this list of conditions and the following disclaimer 12 * in the documentation and/or other materials provided with the 13 * distribution. 14 * * Neither the name of Google Inc. nor the names of its 15 * contributors may be used to endorse or promote products derived from 16 * this software without specific prior written permission. 17 * 18 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 19 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 20 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 21 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 22 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 23 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 24 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 25 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 26 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 27 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 28 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 29 */ 30 31 32 #ifndef LayerRendererChromium_h 33 #define LayerRendererChromium_h 34 35 #if USE(ACCELERATED_COMPOSITING) 36 37 #include "ContentLayerChromium.h" 38 #include "IntRect.h" 39 #include "LayerChromium.h" 40 #include "LayerTilerChromium.h" 41 #include "RenderSurfaceChromium.h" 42 #include "SkBitmap.h" 43 #include "VideoLayerChromium.h" 44 #include "cc/CCCanvasLayerImpl.h" 45 #include "cc/CCHeadsUpDisplay.h" 46 #include "cc/CCPluginLayerImpl.h" 47 #include "cc/CCVideoLayerImpl.h" 48 #include <wtf/HashMap.h> 49 #include <wtf/Noncopyable.h> 50 #include <wtf/PassOwnPtr.h> 51 #include <wtf/PassRefPtr.h> 52 #include <wtf/RefCounted.h> 53 #include <wtf/Vector.h> 54 55 #if USE(CG) 56 #include <CoreGraphics/CGContext.h> 57 #include <wtf/RetainPtr.h> 58 #endif 59 60 namespace WebCore { 61 62 class CCHeadsUpDisplay; 63 class CCLayerImpl; 64 class GeometryBinding; 65 class GraphicsContext3D; 66 67 // Class that handles drawing of composited render layers using GL. 68 class LayerRendererChromium : public RefCounted<LayerRendererChromium> { 69 public: 70 static PassRefPtr<LayerRendererChromium> create(PassRefPtr<GraphicsContext3D>, PassOwnPtr<TilePaintInterface> contentPaint); 71 72 ~LayerRendererChromium(); 73 74 GraphicsContext3D* context(); 75 76 void invalidateRootLayerRect(const IntRect& dirtyRect); 77 78 void setViewport(const IntRect& visibleRect, const IntRect& contentRect, const IntPoint& scrollPosition); 79 80 // updates and draws the current layers onto the backbuffer 81 void updateAndDrawLayers(); 82 83 // waits for rendering to finish 84 void finish(); 85 86 // puts backbuffer onscreen 87 void present(); 88 viewportSize()89 IntSize viewportSize() const { return m_viewportVisibleRect.size(); } 90 91 void setRootLayer(PassRefPtr<LayerChromium>); rootLayer()92 LayerChromium* rootLayer() { return m_rootLayer.get(); } transferRootLayer(LayerRendererChromium * other)93 void transferRootLayer(LayerRendererChromium* other) { other->m_rootLayer = m_rootLayer.release(); } 94 hardwareCompositing()95 bool hardwareCompositing() const { return m_hardwareCompositing; } 96 97 void setCompositeOffscreen(bool); isCompositingOffscreen()98 bool isCompositingOffscreen() const { return m_compositeOffscreen; } 99 100 unsigned createLayerTexture(); 101 void deleteLayerTexture(unsigned); 102 103 static void debugGLCall(GraphicsContext3D*, const char* command, const char* file, int line); 104 projectionMatrix()105 const TransformationMatrix& projectionMatrix() const { return m_projectionMatrix; } 106 107 void useShader(unsigned); 108 109 bool checkTextureSize(const IntSize&); 110 sharedGeometry()111 const GeometryBinding* sharedGeometry() const { return m_sharedGeometry.get(); } borderProgram()112 const LayerChromium::BorderProgram* borderProgram() const { return m_borderProgram.get(); } headsUpDisplayProgram()113 const CCHeadsUpDisplay::Program* headsUpDisplayProgram() const { return m_headsUpDisplayProgram.get(); } renderSurfaceProgram()114 const RenderSurfaceChromium::Program* renderSurfaceProgram() const { return m_renderSurfaceProgram.get(); } renderSurfaceMaskProgram()115 const RenderSurfaceChromium::MaskProgram* renderSurfaceMaskProgram() const { return m_renderSurfaceMaskProgram.get(); } tilerProgram()116 const LayerTilerChromium::Program* tilerProgram() const { return m_tilerProgram.get(); } canvasLayerProgram()117 const CCCanvasLayerImpl::Program* canvasLayerProgram() const { return m_canvasLayerProgram.get(); } pluginLayerProgram()118 const CCPluginLayerImpl::Program* pluginLayerProgram() const { return m_pluginLayerProgram.get(); } videoLayerRGBAProgram()119 const CCVideoLayerImpl::RGBAProgram* videoLayerRGBAProgram() const { return m_videoLayerRGBAProgram.get(); } videoLayerYUVProgram()120 const CCVideoLayerImpl::YUVProgram* videoLayerYUVProgram() const { return m_videoLayerYUVProgram.get(); } 121 122 void resizeOnscreenContent(const IntSize&); 123 124 void getFramebufferPixels(void *pixels, const IntRect& rect); 125 textureManager()126 TextureManager* textureManager() const { return m_textureManager.get(); } 127 headsUpDisplay()128 CCHeadsUpDisplay* headsUpDisplay() { return m_headsUpDisplay.get(); } 129 130 void setScissorToRect(const IntRect&); 131 132 String layerTreeAsText() const; 133 134 void addChildContext(GraphicsContext3D*); 135 void removeChildContext(GraphicsContext3D*); 136 137 private: 138 typedef Vector<RefPtr<CCLayerImpl> > LayerList; 139 typedef HashMap<GraphicsContext3D*, int> ChildContextMap; 140 141 explicit LayerRendererChromium(PassRefPtr<GraphicsContext3D>, PassOwnPtr<TilePaintInterface> contentPaint); 142 143 void updateLayers(LayerList& renderSurfaceLayerList); 144 void updateRootLayerContents(); 145 void updatePropertiesAndRenderSurfaces(LayerChromium*, const TransformationMatrix& parentMatrix, LayerList& renderSurfaceLayerList, LayerList& layers); 146 147 void paintLayerContents(const LayerList&); 148 void updateCompositorResourcesRecursive(LayerChromium*); 149 150 void drawLayers(const LayerList& renderSurfaceLayerList); 151 void drawLayer(CCLayerImpl*, RenderSurfaceChromium*); 152 153 void drawRootLayer(); 154 LayerTexture* getOffscreenLayerTexture(); 155 void copyOffscreenTextureToDisplay(); 156 157 bool isLayerVisible(LayerChromium*, const TransformationMatrix&, const IntRect& visibleRect); 158 159 void setDrawViewportRect(const IntRect&, bool flipY); 160 161 bool useRenderSurface(RenderSurfaceChromium*); 162 163 bool makeContextCurrent(); 164 165 static bool compareLayerZ(const RefPtr<CCLayerImpl>&, const RefPtr<CCLayerImpl>&); 166 167 void dumpRenderSurfaces(TextStream&, int indent, LayerChromium*) const; 168 169 bool initializeSharedObjects(); 170 void cleanupSharedObjects(); 171 172 IntRect m_viewportVisibleRect; 173 IntRect m_viewportContentRect; 174 IntPoint m_viewportScrollPosition; 175 176 TransformationMatrix m_projectionMatrix; 177 178 RefPtr<LayerChromium> m_rootLayer; 179 OwnPtr<TilePaintInterface> m_rootLayerContentPaint; 180 OwnPtr<LayerTilerChromium> m_rootLayerContentTiler; 181 182 bool m_hardwareCompositing; 183 184 unsigned m_currentShader; 185 RenderSurfaceChromium* m_currentRenderSurface; 186 187 unsigned m_offscreenFramebufferId; 188 bool m_compositeOffscreen; 189 190 #if USE(SKIA) 191 OwnPtr<SkCanvas> m_rootLayerCanvas; 192 OwnPtr<PlatformContextSkia> m_rootLayerSkiaContext; 193 OwnPtr<GraphicsContext> m_rootLayerGraphicsContext; 194 #elif USE(CG) 195 Vector<uint8_t> m_rootLayerBackingStore; 196 RetainPtr<CGContextRef> m_rootLayerCGContext; 197 OwnPtr<GraphicsContext> m_rootLayerGraphicsContext; 198 #endif 199 200 // Maximum texture dimensions supported. 201 int m_maxTextureSize; 202 203 // Store values that are shared between instances of each layer type 204 // associated with this instance of the compositor. Since there can be 205 // multiple instances of the compositor running in the same renderer process 206 // we cannot store these values in static variables. 207 OwnPtr<GeometryBinding> m_sharedGeometry; 208 OwnPtr<LayerChromium::BorderProgram> m_borderProgram; 209 OwnPtr<CCHeadsUpDisplay::Program> m_headsUpDisplayProgram; 210 OwnPtr<RenderSurfaceChromium::Program> m_renderSurfaceProgram; 211 OwnPtr<RenderSurfaceChromium::MaskProgram> m_renderSurfaceMaskProgram; 212 OwnPtr<LayerTilerChromium::Program> m_tilerProgram; 213 OwnPtr<CCCanvasLayerImpl::Program> m_canvasLayerProgram; 214 OwnPtr<CCVideoLayerImpl::RGBAProgram> m_videoLayerRGBAProgram; 215 OwnPtr<CCVideoLayerImpl::YUVProgram> m_videoLayerYUVProgram; 216 OwnPtr<CCPluginLayerImpl::Program> m_pluginLayerProgram; 217 218 OwnPtr<TextureManager> m_textureManager; 219 220 OwnPtr<CCHeadsUpDisplay> m_headsUpDisplay; 221 222 RefPtr<GraphicsContext3D> m_context; 223 ChildContextMap m_childContexts; 224 225 // If true, the child contexts were copied to the compositor texture targets 226 // and the compositor will need to wait on the proper latches before using 227 // the target textures. If false, the compositor is reusing the textures 228 // from last frame. 229 bool m_childContextsWereCopied; 230 231 bool m_contextSupportsLatch; 232 233 RenderSurfaceChromium* m_defaultRenderSurface; 234 }; 235 236 // Setting DEBUG_GL_CALLS to 1 will call glGetError() after almost every GL 237 // call made by the compositor. Useful for debugging rendering issues but 238 // will significantly degrade performance. 239 #define DEBUG_GL_CALLS 0 240 241 #if DEBUG_GL_CALLS && !defined ( NDEBUG ) 242 #define GLC(context, x) { (x), LayerRendererChromium::debugGLCall(context, #x, __FILE__, __LINE__); } 243 #else 244 #define GLC(context, x) (x) 245 #endif 246 247 248 } 249 250 #endif // USE(ACCELERATED_COMPOSITING) 251 252 #endif 253