cc/TiledLayerChromium.h

   1 // Copyright 2011 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #ifndef TiledLayerChromium_h
   6 #define TiledLayerChromium_h
   7
   8 #if USE(ACCELERATED_COMPOSITING)
   9
  10 #include "CCLayerTilingData.h"
  11 #include "LayerChromium.h"
  12 #include "LayerTextureUpdater.h"
  13
  14 namespace WebCore {
  15 class UpdatableTile;
  16
  17 class TiledLayerChromium : public LayerChromium {
  18 public:
  19     enum TilingOption { AlwaysTile, NeverTile, AutoTile };
  20
  21     virtual ~TiledLayerChromium();
  22
  23     virtual void setIsMask(bool) OVERRIDE;
  24
  25     virtual void pushPropertiesTo(CCLayerImpl*) OVERRIDE;
  26
  27     virtual bool drawsContent() const OVERRIDE;
  28     virtual bool needsContentsScale() const OVERRIDE;
  29
  30     virtual IntSize contentBounds() const OVERRIDE;
  31
  32     virtual void setNeedsDisplayRect(const FloatRect&) OVERRIDE;
  33
  34     virtual void setUseLCDText(bool) OVERRIDE;
  35
  36     virtual void setLayerTreeHost(CCLayerTreeHost*) OVERRIDE;
  37
  38     virtual void setTexturePriorities(const CCPriorityCalculator&) OVERRIDE;
  39
  40     virtual Region visibleContentOpaqueRegion() const OVERRIDE;
  41
  42     virtual void update(CCTextureUpdateQueue&, const CCOcclusionTracker*, CCRenderingStats&) OVERRIDE;
  43
  44 protected:
  45     TiledLayerChromium();
  46
  47     void updateTileSizeAndTilingOption();
  48     void updateBounds();
  49
  50     // Exposed to subclasses for testing.
  51     void setTileSize(const IntSize&);
  52     void setTextureFormat(GC3Denum textureFormat) { m_textureFormat = textureFormat; }
  53     void setBorderTexelOption(CCLayerTilingData::BorderTexelOption);
  54     void setSampledTexelFormat(LayerTextureUpdater::SampledTexelFormat sampledTexelFormat) { m_sampledTexelFormat = sampledTexelFormat; }
  55     size_t numPaintedTiles() { return m_tiler->tiles().size(); }
  56
  57     virtual LayerTextureUpdater* textureUpdater() const = 0;
  58     virtual void createTextureUpdaterIfNeeded() = 0;
  59
  60     // Set invalidations to be potentially repainted during update().
  61     void invalidateContentRect(const IntRect& contentRect);
  62
  63     // Reset state on tiles that will be used for updating the layer.
  64     void resetUpdateState();
  65
  66     // After preparing an update, returns true if more painting is needed.
  67     bool needsIdlePaint();
  68     IntRect idlePaintRect();
  69
  70     bool skipsDraw() const { return m_skipsDraw; }
  71
  72     // Virtual for testing
  73     virtual CCPrioritizedTextureManager* textureManager() const;
  74
  75 private:
  76     virtual PassOwnPtr<CCLayerImpl> createCCLayerImpl() OVERRIDE;
  77
  78     void createTilerIfNeeded();
  79     void setTilingOption(TilingOption);
  80
  81     bool tileOnlyNeedsPartialUpdate(UpdatableTile*);
  82     bool tileNeedsBufferedUpdate(UpdatableTile*);
  83
  84     void markOcclusionsAndRequestTextures(int left, int top, int right, int bottom, const CCOcclusionTracker*);
  85
  86     bool updateTiles(int left, int top, int right, int bottom, CCTextureUpdateQueue&, const CCOcclusionTracker*, CCRenderingStats&, bool& didPaint);
  87     bool haveTexturesForTiles(int left, int top, int right, int bottom, bool ignoreOcclusions);
  88     IntRect markTilesForUpdate(int left, int top, int right, int bottom, bool ignoreOcclusions);
  89     void updateTileTextures(const IntRect& paintRect, int left, int top, int right, int bottom, CCTextureUpdateQueue&, const CCOcclusionTracker*, CCRenderingStats&);
  90
  91     UpdatableTile* tileAt(int, int) const;
  92     UpdatableTile* createTile(int, int);
  93
  94     GC3Denum m_textureFormat;
  95     bool m_skipsDraw;
  96     bool m_failedUpdate;
  97     LayerTextureUpdater::SampledTexelFormat m_sampledTexelFormat;
  98
  99     TilingOption m_tilingOption;
 100     OwnPtr<CCLayerTilingData> m_tiler;
 101 };
 102
 103 }
 104 #endif // USE(ACCELERATED_COMPOSITING)
 105
 106 #endif