Adaptively throttle texture uploads

cc/CCLayerTreeHost.h

 // Copyright 2011 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef CCLayerTreeHost_h
 #define CCLayerTreeHost_h
 
 #include "CCAnimationEvents.h"
 #include "CCGraphicsContext.h"
 #include "CCLayerTreeHostClient.h"
@@ skipping 121 matching lines @@
         RecreateFailedButTryAgain,
         RecreateFailedAndGaveUp,
     };
     RecreateResult recreateContext();
     void didCommitAndDrawFrame() { m_client->didCommitAndDrawFrame(); }
     void didCompleteSwapBuffers() { m_client->didCompleteSwapBuffers(); }
     void deleteContentsTexturesOnImplThread(CCResourceProvider*);
     virtual void acquireLayerTextures();
     // Returns false if we should abort this frame due to initialization failure.
     bool initializeRendererIfNeeded();
-    void updateLayers(CCTextureUpdateQueue&, size_t contentsMemoryLimitBytes);
+    void updateLayers(CCTextureUpdateQueue&, size_t contentsMemoryLimitBytes, size_t *maxTextureUpdates);
 
     CCLayerTreeHostClient* client() { return m_client; }
 
     // Only used when compositing on the main thread.
     void composite();
     void scheduleComposite();
 
     // Composites and attempts to read back the result into the provided
     // buffer. If it wasn't possible, e.g. due to context lost, will return
     // false.
@@ skipping 72 matching lines @@
 private:
     typedef Vector<RefPtr<LayerChromium> > LayerList;
     typedef Vector<OwnPtr<CCPrioritizedTexture> > TextureList;
 
     void initializeRenderer();
 
     void update(LayerChromium*, CCTextureUpdateQueue&, const CCOcclusionTracker*);
     bool paintLayerContents(const LayerList&, CCTextureUpdateQueue&);
     bool paintMasksForRenderSurface(LayerChromium*, CCTextureUpdateQueue&);
 
-    void updateLayers(LayerChromium*, CCTextureUpdateQueue&);
+    void updateLayers(LayerChromium*, CCTextureUpdateQueue&, size_t *maxTextureUpdates);

[nduca, 2012/09/13 20:23:04]

wat?

 
     void prioritizeTextures(const LayerList&, CCOverdrawMetrics&); 
     void setPrioritiesForSurfaces(size_t surfaceMemoryBytes);
     void setPrioritiesForLayers(const LayerList&);
     size_t calculateMemoryForRenderSurfaces(const LayerList& updateList);
 
     void animateLayers(double monotonicTime);
     bool animateLayersRecursive(LayerChromium* current, double monotonicTime);
     void setAnimationEventsRecursive(const CCAnimationEventsVector&, LayerChromium*, double wallClockTime);
 
@@ skipping 30 matching lines @@
     RateLimiterMap m_rateLimiters;
 
     float m_pageScaleFactor;
     float m_minPageScaleFactor, m_maxPageScaleFactor;
     bool m_triggerIdleUpdates;
 
     SkColor m_backgroundColor;
     bool m_hasTransparentBackground;
 
     TextureList m_deleteTextureAfterCommitList;
+    size_t m_maxPartialTextureUpdates;
     size_t m_partialTextureUpdateRequests;
 
     static bool s_needsFilterContext;
 };
 
 }
 
 #endif