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/*
Copyright (C) 2012 Nokia Corporation and/or its subsidiary(-ies)
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Library General Public
License as published by the Free Software Foundation; either
version 2 of the License, or (at your option) any later version.
This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Library General Public License for more details.
You should have received a copy of the GNU Library General Public License
along with this library; see the file COPYING.LIB. If not, write to
the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
Boston, MA 02110-1301, USA.
*/
#ifndef LayerTreeRenderer_h
#define LayerTreeRenderer_h
#if USE(COORDINATED_GRAPHICS)
#include "BackingStore.h"
#include "ShareableSurface.h"
#include "TextureMapper.h"
#include "TextureMapperBackingStore.h"
#include "WebLayerTreeInfo.h"
#include <WebCore/GraphicsContext.h>
#include <WebCore/GraphicsLayer.h>
#include <WebCore/GraphicsLayerAnimation.h>
#include <WebCore/GraphicsSurface.h>
#include <WebCore/IntRect.h>
#include <WebCore/IntSize.h>
#include <WebCore/RunLoop.h>
#include <WebCore/Timer.h>
#include <wtf/Functional.h>
#include <wtf/HashSet.h>
#include <wtf/ThreadingPrimitives.h>
namespace WebCore {
class CustomFilterProgram;
class CustomFilterProgramInfo;
class TextureMapperLayer;
}
namespace WebKit {
class CoordinatedBackingStore;
class LayerTreeCoordinatorProxy;
class WebLayerInfo;
class WebLayerUpdateInfo;
class LayerTreeRenderer : public ThreadSafeRefCounted<LayerTreeRenderer>, public WebCore::GraphicsLayerClient {
public:
struct TileUpdate {
WebCore::IntRect sourceRect;
WebCore::IntRect tileRect;
RefPtr<ShareableSurface> surface;
WebCore::IntPoint offset;
TileUpdate(const WebCore::IntRect& source, const WebCore::IntRect& tile, PassRefPtr<ShareableSurface> newSurface, const WebCore::IntPoint& newOffset)
: sourceRect(source)
, tileRect(tile)
, surface(newSurface)
, offset(newOffset)
{
}
};
explicit LayerTreeRenderer(LayerTreeCoordinatorProxy*);
virtual ~LayerTreeRenderer();
void paintToCurrentGLContext(const WebCore::TransformationMatrix&, float, const WebCore::FloatRect&, WebCore::TextureMapper::PaintFlags = 0);
void paintToGraphicsContext(BackingStore::PlatformGraphicsContext);
void setContentsSize(const WebCore::FloatSize&);
void setVisibleContentsRect(const WebCore::FloatRect&);
void didChangeScrollPosition(const WebCore::IntPoint& position);
#if USE(GRAPHICS_SURFACE)
void createCanvas(WebLayerID, const WebCore::IntSize&, PassRefPtr<WebCore::GraphicsSurface>);
void syncCanvas(WebLayerID, uint32_t frontBuffer);
void destroyCanvas(WebLayerID);
#endif
void detach();
void appendUpdate(const Function<void()>&);
// The painting thread must lock the main thread to use below two methods, because two methods access members that the main thread manages. See m_layerTreeCoordinatorProxy.
// Currently, QQuickWebPage::updatePaintNode() locks the main thread before calling both methods.
void purgeGLResources();
void setActive(bool);
void deleteLayer(WebLayerID);
void setRootLayerID(WebLayerID);
void setLayerChildren(WebLayerID, const Vector<WebLayerID>&);
void setLayerState(WebLayerID, const WebLayerInfo&);
#if ENABLE(CSS_FILTERS)
void setLayerFilters(WebLayerID, const WebCore::FilterOperations&);
#endif
#if ENABLE(CSS_SHADERS)
void injectCachedCustomFilterPrograms(const WebCore::FilterOperations& filters) const;
void createCustomFilterProgram(int id, const WebCore::CustomFilterProgramInfo&);
void removeCustomFilterProgram(int id);
#endif
void createTile(WebLayerID, int, float scale);
void removeTile(WebLayerID, int);
void updateTile(WebLayerID, int, const TileUpdate&);
void flushLayerChanges();
void createImageBacking(CoordinatedImageBackingID);
void updateImageBacking(CoordinatedImageBackingID, PassRefPtr<ShareableSurface>);
void clearImageBackingContents(CoordinatedImageBackingID);
void removeImageBacking(CoordinatedImageBackingID);
void setLayerAnimations(WebLayerID, const WebCore::GraphicsLayerAnimations&);
void setAnimationsLocked(bool);
void setBackgroundColor(const WebCore::Color&);
void setDrawsBackground(bool enable) { m_setDrawsBackground = enable; }
#if ENABLE(REQUEST_ANIMATION_FRAME)
void requestAnimationFrame();
#endif
private:
PassOwnPtr<WebCore::GraphicsLayer> createLayer(WebLayerID);
WebCore::GraphicsLayer* layerByID(WebLayerID id) { return (id == InvalidWebLayerID) ? 0 : m_layers.get(id); }
WebCore::GraphicsLayer* rootLayer() { return m_rootLayer.get(); }
void syncRemoteContent();
void adjustPositionForFixedLayers();
// Reimplementations from WebCore::GraphicsLayerClient.
virtual void notifyAnimationStarted(const WebCore::GraphicsLayer*, double) { }
virtual void notifyFlushRequired(const WebCore::GraphicsLayer*) { }
virtual void paintContents(const WebCore::GraphicsLayer*, WebCore::GraphicsContext&, WebCore::GraphicsLayerPaintingPhase, const WebCore::IntRect&) OVERRIDE { }
void dispatchOnMainThread(const Function<void()>&);
void updateViewport();
#if ENABLE(REQUEST_ANIMATION_FRAME)
void animationFrameReady();
#endif
void renderNextFrame();
void purgeBackingStores();
void assignImageBackingToLayer(WebCore::GraphicsLayer*, CoordinatedImageBackingID);
void removeReleasedImageBackingsIfNeeded();
void ensureRootLayer();
WebCore::GraphicsLayer* ensureLayer(WebLayerID);
void commitPendingBackingStoreOperations();
CoordinatedBackingStore* getBackingStore(WebCore::GraphicsLayer*);
void prepareContentBackingStore(WebCore::GraphicsLayer*);
void createBackingStoreIfNeeded(WebCore::GraphicsLayer*);
void removeBackingStoreIfNeeded(WebCore::GraphicsLayer*);
void resetBackingStoreSizeToLayerSize(WebCore::GraphicsLayer*);
WebCore::FloatSize m_contentsSize;
WebCore::FloatRect m_visibleContentsRect;
// Render queue can be accessed ony from main thread or updatePaintNode call stack!
Vector<Function<void()> > m_renderQueue;
Mutex m_renderQueueMutex;
OwnPtr<WebCore::TextureMapper> m_textureMapper;
typedef HashMap<CoordinatedImageBackingID, RefPtr<CoordinatedBackingStore> > ImageBackingMap;
ImageBackingMap m_imageBackings;
Vector<RefPtr<CoordinatedBackingStore> > m_releasedImageBackings;
typedef HashMap<WebCore::TextureMapperLayer*, RefPtr<CoordinatedBackingStore> > BackingStoreMap;
BackingStoreMap m_pendingSyncBackingStores;
HashSet<RefPtr<CoordinatedBackingStore> > m_backingStoresWithPendingBuffers;
#if USE(GRAPHICS_SURFACE)
typedef HashMap<WebLayerID, RefPtr<WebCore::TextureMapperSurfaceBackingStore> > SurfaceBackingStoreMap;
SurfaceBackingStoreMap m_surfaceBackingStores;
#endif
// Below two members are accessed by only the main thread. The painting thread must lock the main thread to access both members.
LayerTreeCoordinatorProxy* m_layerTreeCoordinatorProxy;
bool m_isActive;
OwnPtr<WebCore::GraphicsLayer> m_rootLayer;
typedef HashMap<WebLayerID, OwnPtr<WebCore::GraphicsLayer> > LayerMap;
LayerMap m_layers;
typedef HashMap<WebLayerID, WebCore::GraphicsLayer*> LayerRawPtrMap;
LayerRawPtrMap m_fixedLayers;
WebLayerID m_rootLayerID;
WebCore::IntPoint m_renderedContentsScrollPosition;
WebCore::IntPoint m_pendingRenderedContentsScrollPosition;
bool m_animationsLocked;
#if ENABLE(REQUEST_ANIMATION_FRAME)
bool m_animationFrameRequested;
#endif
WebCore::Color m_backgroundColor;
bool m_setDrawsBackground;
#if ENABLE(CSS_SHADERS)
typedef HashMap<int, RefPtr<WebCore::CustomFilterProgram> > CustomFilterProgramMap;
CustomFilterProgramMap m_customFilterPrograms;
#endif
};
};
#endif // USE(COORDINATED_GRAPHICS)
#endif // LayerTreeRenderer_h
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