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/*
* Copyright (C) 2012 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:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. 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.
*
* THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS 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 APPLE INC. OR ITS 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 CCOverdrawMetrics_h
#define CCOverdrawMetrics_h
#include <wtf/PassOwnPtr.h>
namespace WebKit {
class WebTransformationMatrix;
}
namespace WebCore {
class IntRect;
class CCLayerTreeHost;
class CCLayerTreeHostImpl;
// FIXME: compute overdraw metrics only occasionally, not every frame.
class CCOverdrawMetrics {
public:
static PassOwnPtr<CCOverdrawMetrics> create(bool recordMetricsForFrame) { return adoptPtr(new CCOverdrawMetrics(recordMetricsForFrame)); }
// These methods are used for saving metrics during update/commit.
// Record pixels painted by WebKit into the texture updater, but does not mean the pixels were rasterized in main memory.
void didPaint(const IntRect& paintedRect);
// Records that an invalid tile was culled and did not need to be painted/uploaded, and did not contribute to other tiles needing to be painted.
void didCullTileForUpload();
// Records pixels that were uploaded to texture memory.
void didUpload(const WebKit::WebTransformationMatrix& transformToTarget, const IntRect& uploadRect, const IntRect& opaqueRect);
// These methods are used for saving metrics during draw.
// Record pixels that were not drawn to screen.
void didCullForDrawing(const WebKit::WebTransformationMatrix& transformToTarget, const IntRect& beforeCullRect, const IntRect& afterCullRect);
// Record pixels that were drawn to screen.
void didDraw(const WebKit::WebTransformationMatrix& transformToTarget, const IntRect& afterCullRect, const IntRect& opaqueRect);
void recordMetrics(const CCLayerTreeHost*) const;
void recordMetrics(const CCLayerTreeHostImpl*) const;
// Accessors for tests.
float pixelsDrawnOpaque() const { return m_pixelsDrawnOpaque; }
float pixelsDrawnTranslucent() const { return m_pixelsDrawnTranslucent; }
float pixelsCulledForDrawing() const { return m_pixelsCulledForDrawing; }
float pixelsPainted() const { return m_pixelsPainted; }
float pixelsUploadedOpaque() const { return m_pixelsUploadedOpaque; }
float pixelsUploadedTranslucent() const { return m_pixelsUploadedTranslucent; }
int tilesCulledForUpload() const { return m_tilesCulledForUpload; }
private:
enum MetricsType {
UpdateAndCommit,
DrawingToScreen
};
explicit CCOverdrawMetrics(bool recordMetricsForFrame);
template<typename LayerTreeHostType>
void recordMetricsInternal(MetricsType, const LayerTreeHostType*) const;
// When false this class is a giant no-op.
bool m_recordMetricsForFrame;
// These values are used for saving metrics during update/commit.
// Count of pixels that were painted due to invalidation.
float m_pixelsPainted;
// Count of pixels uploaded to textures and known to be opaque.
float m_pixelsUploadedOpaque;
// Count of pixels uploaded to textures and not known to be opaque.
float m_pixelsUploadedTranslucent;
// Count of tiles that were invalidated but not uploaded.
int m_tilesCulledForUpload;
// These values are used for saving metrics during draw.
// Count of pixels that are opaque (and thus occlude). Ideally this is no more than wiewport width x height.
float m_pixelsDrawnOpaque;
// Count of pixels that are possibly translucent, and cannot occlude.
float m_pixelsDrawnTranslucent;
// Count of pixels not drawn as they are occluded by somthing opaque.
float m_pixelsCulledForDrawing;
};
} // namespace WebCore
#endif
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