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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 "ContentLayerChromium.h"
#include "IntRect.h"
#include "LayerChromium.h"
#include "LayerTilerChromium.h"
#include "RenderSurfaceChromium.h"
#include "SkBitmap.h"
#include "VideoLayerChromium.h"
#include "cc/CCCanvasLayerImpl.h"
#include "cc/CCHeadsUpDisplay.h"
#include "cc/CCPluginLayerImpl.h"
#include "cc/CCVideoLayerImpl.h"
#include <wtf/HashMap.h>
#include <wtf/Noncopyable.h>
#include <wtf/PassOwnPtr.h>
#include <wtf/PassRefPtr.h>
#include <wtf/RefCounted.h>
#include <wtf/Vector.h>
#if PLATFORM(CG)
#include <CoreGraphics/CGContext.h>
#include <wtf/RetainPtr.h>
#endif
namespace WebCore {
class CCLayerImpl;
class GeometryBinding;
class GraphicsContext3D;
class CCHeadsUpDisplay;
// Class that handles drawing of composited render layers using GL.
class LayerRendererChromium : public RefCounted<LayerRendererChromium> {
public:
static PassRefPtr<LayerRendererChromium> create(PassRefPtr<GraphicsContext3D>, PassOwnPtr<TilePaintInterface> contentPaint, PassOwnPtr<TilePaintInterface> scrollbarPaint);
~LayerRendererChromium();
GraphicsContext3D* context();
void invalidateRootLayerRect(const IntRect& dirtyRect);
void setViewport(const IntRect& visibleRect, const IntRect& contentRect, const IntPoint& scrollPosition);
// updates and draws the current layers onto the backbuffer
void updateAndDrawLayers();
// waits for rendering to finish
void finish();
// puts backbuffer onscreen
void present();
IntSize viewportSize() const { return m_viewportVisibleRect.size(); }
void setRootLayer(PassRefPtr<LayerChromium> layer);
LayerChromium* rootLayer() { return m_rootLayer.get(); }
void transferRootLayer(LayerRendererChromium* other) { other->m_rootLayer = m_rootLayer.release(); }
bool hardwareCompositing() const { return m_hardwareCompositing; }
void setCompositeOffscreen(bool);
bool isCompositingOffscreen() const { return m_compositeOffscreen; }
unsigned createLayerTexture();
void deleteLayerTexture(unsigned);
static void debugGLCall(GraphicsContext3D*, const char* command, const char* file, int line);
const TransformationMatrix& projectionMatrix() const { return m_projectionMatrix; }
void useShader(unsigned);
bool checkTextureSize(const IntSize&);
const GeometryBinding* sharedGeometry() const { return m_sharedGeometry.get(); }
const LayerChromium::BorderProgram* borderProgram() const { return m_borderProgram.get(); }
const ContentLayerChromium::Program* contentLayerProgram() const { return m_contentLayerProgram.get(); }
const RenderSurfaceChromium::Program* renderSurfaceProgram() const { return m_renderSurfaceProgram.get(); }
const RenderSurfaceChromium::MaskProgram* renderSurfaceMaskProgram() const { return m_renderSurfaceMaskProgram.get(); }
const LayerTilerChromium::Program* tilerProgram() const { return m_tilerProgram.get(); }
const CCCanvasLayerImpl::Program* canvasLayerProgram() const { return m_canvasLayerProgram.get(); }
const CCPluginLayerImpl::Program* pluginLayerProgram() const { return m_pluginLayerProgram.get(); }
const CCVideoLayerImpl::RGBAProgram* videoLayerRGBAProgram() const { return m_videoLayerRGBAProgram.get(); }
const CCVideoLayerImpl::YUVProgram* videoLayerYUVProgram() const { return m_videoLayerYUVProgram.get(); }
void resizeOnscreenContent(const IntSize&);
void getFramebufferPixels(void *pixels, const IntRect& rect);
TextureManager* textureManager() const { return m_textureManager.get(); }
CCHeadsUpDisplay* headsUpDisplay() { return m_headsUpDisplay.get(); }
void setScissorToRect(const IntRect&);
String layerTreeAsText() const;
private:
explicit LayerRendererChromium(PassRefPtr<GraphicsContext3D>, PassOwnPtr<TilePaintInterface> contentPaint, PassOwnPtr<TilePaintInterface> scrollbarPaint);
void updateLayers(Vector<CCLayerImpl*>& renderSurfaceLayerList);
void updateRootLayerContents();
void updateRootLayerScrollbars();
void updatePropertiesAndRenderSurfaces(LayerChromium*, const TransformationMatrix& parentMatrix, Vector<CCLayerImpl*>& renderSurfaceLayerList, Vector<CCLayerImpl*>& layerList);
void paintContentsRecursive(LayerChromium*);
void updateCompositorResourcesRecursive(LayerChromium*);
void drawLayers(const Vector<CCLayerImpl*>& renderSurfaceLayerList);
void drawLayer(CCLayerImpl*, RenderSurfaceChromium*);
void drawRootLayer();
LayerTexture* getOffscreenLayerTexture();
void copyOffscreenTextureToDisplay();
bool isLayerVisible(LayerChromium*, const TransformationMatrix&, const IntRect& visibleRect);
void setDrawViewportRect(const IntRect&, bool flipY);
bool useRenderSurface(RenderSurfaceChromium*);
bool makeContextCurrent();
static bool compareLayerZ(const CCLayerImpl*, const CCLayerImpl*);
void dumpRenderSurfaces(TextStream&, int indent, LayerChromium*) const;
bool initializeSharedObjects();
void cleanupSharedObjects();
IntRect verticalScrollbarRect() const;
IntRect horizontalScrollbarRect() const;
IntRect m_viewportVisibleRect;
IntRect m_viewportContentRect;
IntPoint m_viewportScrollPosition;
TransformationMatrix m_projectionMatrix;
RefPtr<LayerChromium> m_rootLayer;
OwnPtr<TilePaintInterface> m_rootLayerContentPaint;
OwnPtr<TilePaintInterface> m_rootLayerScrollbarPaint;
OwnPtr<LayerTilerChromium> m_rootLayerContentTiler;
OwnPtr<LayerTilerChromium> m_horizontalScrollbarTiler;
OwnPtr<LayerTilerChromium> m_verticalScrollbarTiler;
bool m_hardwareCompositing;
unsigned m_currentShader;
RenderSurfaceChromium* m_currentRenderSurface;
unsigned m_offscreenFramebufferId;
bool m_compositeOffscreen;
#if USE(SKIA)
OwnPtr<skia::PlatformCanvas> m_rootLayerCanvas;
OwnPtr<PlatformContextSkia> m_rootLayerSkiaContext;
OwnPtr<GraphicsContext> m_rootLayerGraphicsContext;
#elif PLATFORM(CG)
Vector<uint8_t> m_rootLayerBackingStore;
RetainPtr<CGContextRef> m_rootLayerCGContext;
OwnPtr<GraphicsContext> m_rootLayerGraphicsContext;
#endif
// Maximum texture dimensions supported.
int m_maxTextureSize;
// Store values that are shared between instances of each layer type
// associated with this instance of the compositor. Since there can be
// multiple instances of the compositor running in the same renderer process
// we cannot store these values in static variables.
OwnPtr<GeometryBinding> m_sharedGeometry;
OwnPtr<LayerChromium::BorderProgram> m_borderProgram;
OwnPtr<ContentLayerChromium::Program> m_contentLayerProgram;
OwnPtr<RenderSurfaceChromium::Program> m_renderSurfaceProgram;
OwnPtr<RenderSurfaceChromium::MaskProgram> m_renderSurfaceMaskProgram;
OwnPtr<LayerTilerChromium::Program> m_tilerProgram;
OwnPtr<CCCanvasLayerImpl::Program> m_canvasLayerProgram;
OwnPtr<CCVideoLayerImpl::RGBAProgram> m_videoLayerRGBAProgram;
OwnPtr<CCVideoLayerImpl::YUVProgram> m_videoLayerYUVProgram;
OwnPtr<CCPluginLayerImpl::Program> m_pluginLayerProgram;
OwnPtr<TextureManager> m_textureManager;
OwnPtr<CCHeadsUpDisplay> m_headsUpDisplay;
RefPtr<GraphicsContext3D> m_context;
RenderSurfaceChromium* m_defaultRenderSurface;
};
// 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
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