diff options
Diffstat (limited to 'cc/CCDamageTracker.h')
-rw-r--r-- | cc/CCDamageTracker.h | 63 |
1 files changed, 3 insertions, 60 deletions
diff --git a/cc/CCDamageTracker.h b/cc/CCDamageTracker.h index c7550a2..5e48bc6 100644 --- a/cc/CCDamageTracker.h +++ b/cc/CCDamageTracker.h @@ -1,63 +1,6 @@ -// Copyright 2011 The Chromium Authors. All rights reserved. +// Copyright 2012 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 CCDamageTracker_h -#define CCDamageTracker_h - -#include "base/memory/scoped_ptr.h" -#include "FloatRect.h" -#include <vector> -#include <wtf/HashMap.h> -#include <wtf/Vector.h> - -namespace WebKit { -class WebFilterOperations; -} - -namespace cc { - -class CCLayerImpl; -class CCRenderSurface; - -// Computes the region where pixels have actually changed on a RenderSurface. This region is used -// to scissor what is actually drawn to the screen to save GPU computation and bandwidth. -class CCDamageTracker { -public: - static scoped_ptr<CCDamageTracker> create(); - ~CCDamageTracker(); - - void didDrawDamagedArea() { m_currentDamageRect = FloatRect(); } - void forceFullDamageNextUpdate() { m_forceFullDamageNextUpdate = true; } - void updateDamageTrackingState(const std::vector<CCLayerImpl*>& layerList, int targetSurfaceLayerID, bool targetSurfacePropertyChangedOnlyFromDescendant, const IntRect& targetSurfaceContentRect, CCLayerImpl* targetSurfaceMaskLayer, const WebKit::WebFilterOperations&); - - const FloatRect& currentDamageRect() { return m_currentDamageRect; } - -private: - CCDamageTracker(); - - FloatRect trackDamageFromActiveLayers(const std::vector<CCLayerImpl*>& layerList, int targetSurfaceLayerID); - FloatRect trackDamageFromSurfaceMask(CCLayerImpl* targetSurfaceMaskLayer); - FloatRect trackDamageFromLeftoverRects(); - - FloatRect removeRectFromCurrentFrame(int layerID, bool& layerIsNew); - void saveRectForNextFrame(int layerID, const FloatRect& targetSpaceRect); - - // These helper functions are used only in trackDamageFromActiveLayers(). - void extendDamageForLayer(CCLayerImpl*, FloatRect& targetDamageRect); - void extendDamageForRenderSurface(CCLayerImpl*, FloatRect& targetDamageRect); - - // To correctly track exposed regions, two hashtables of rects are maintained. - // The "current" map is used to compute exposed regions of the current frame, while - // the "next" map is used to collect layer rects that are used in the next frame. - typedef HashMap<int, FloatRect> RectMap; - scoped_ptr<RectMap> m_currentRectHistory; - scoped_ptr<RectMap> m_nextRectHistory; - - FloatRect m_currentDamageRect; - bool m_forceFullDamageNextUpdate; -}; - -} // namespace cc - -#endif // CCDamageTracker_h +// Temporary forwarding header +#include "cc/damage_tracker.h" |