[cc] Rename all cc/ filenames to Chromium style

cc/CCOverdrawMetrics.cpp

-// 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.
-
-#include "config.h"
-
-#if USE(ACCELERATED_COMPOSITING)
-
-#include "CCOverdrawMetrics.h"
-
-#include "CCLayerTreeHost.h"
-#include "CCLayerTreeHostImpl.h"
-#include "CCMathUtil.h"
-#include "FloatQuad.h"
-#include "IntRect.h"
-#include "TraceEvent.h"
-#include <public/Platform.h>
-#include <public/WebTransformationMatrix.h>
-
-using WebKit::WebTransformationMatrix;
-
-namespace cc {
-
-CCOverdrawMetrics::CCOverdrawMetrics(bool recordMetricsForFrame)
-    : m_recordMetricsForFrame(recordMetricsForFrame)
-    , m_pixelsPainted(0)
-    , m_pixelsUploadedOpaque(0)
-    , m_pixelsUploadedTranslucent(0)
-    , m_tilesCulledForUpload(0)
-    , m_contentsTextureUseBytes(0)
-    , m_renderSurfaceTextureUseBytes(0)
-    , m_pixelsDrawnOpaque(0)
-    , m_pixelsDrawnTranslucent(0)
-    , m_pixelsCulledForDrawing(0)
-{
-}
-
-static inline float wedgeProduct(const FloatPoint& p1, const FloatPoint& p2)
-{
-    return p1.x() * p2.y() - p1.y() * p2.x();
-}
-
-// Calculates area of an arbitrary convex polygon with up to 8 points.
-static inline float polygonArea(const FloatPoint points[8], int numPoints)
-{
-    if (numPoints < 3)
-        return 0;
-
-    float area = 0;
-    for (int i = 0; i < numPoints; ++i)
-        area += wedgeProduct(points[i], points[(i+1)%numPoints]);
-    return fabs(0.5f * area);
-}
-
-// Takes a given quad, maps it by the given transformation, and gives the area of the resulting polygon.
-static inline float areaOfMappedQuad(const WebTransformationMatrix& transform, const FloatQuad& quad)
-{
-    FloatPoint clippedQuad[8];
-    int numVerticesInClippedQuad = 0;
-    CCMathUtil::mapClippedQuad(transform, quad, clippedQuad, numVerticesInClippedQuad);
-    return polygonArea(clippedQuad, numVerticesInClippedQuad);
-}
-
-void CCOverdrawMetrics::didPaint(const IntRect& paintedRect)
-{
-    if (!m_recordMetricsForFrame)
-        return;
-
-    m_pixelsPainted += static_cast<float>(paintedRect.width()) * paintedRect.height();
-}
-
-void CCOverdrawMetrics::didCullTileForUpload()
-{
-    if (m_recordMetricsForFrame)
-        ++m_tilesCulledForUpload;
-}
-
-void CCOverdrawMetrics::didUpload(const WebTransformationMatrix& transformToTarget, const IntRect& uploadRect, const IntRect& opaqueRect)
-{
-    if (!m_recordMetricsForFrame)
-        return;
-
-    float uploadArea = areaOfMappedQuad(transformToTarget, FloatQuad(uploadRect));
-    float uploadOpaqueArea = areaOfMappedQuad(transformToTarget, FloatQuad(intersection(opaqueRect, uploadRect)));
-
-    m_pixelsUploadedOpaque += uploadOpaqueArea;
-    m_pixelsUploadedTranslucent += uploadArea - uploadOpaqueArea;
-}
-
-void CCOverdrawMetrics::didUseContentsTextureMemoryBytes(size_t contentsTextureUseBytes)
-{
-    if (!m_recordMetricsForFrame)
-        return;
-
-    m_contentsTextureUseBytes += contentsTextureUseBytes;
-}
-
-void CCOverdrawMetrics::didUseRenderSurfaceTextureMemoryBytes(size_t renderSurfaceUseBytes)
-{
-    if (!m_recordMetricsForFrame)
-        return;
-
-    m_renderSurfaceTextureUseBytes += renderSurfaceUseBytes;
-}
-
-void CCOverdrawMetrics::didCullForDrawing(const WebTransformationMatrix& transformToTarget, const IntRect& beforeCullRect, const IntRect& afterCullRect)
-{
-    if (!m_recordMetricsForFrame)
-        return;
-
-    float beforeCullArea = areaOfMappedQuad(transformToTarget, FloatQuad(beforeCullRect));
-    float afterCullArea = areaOfMappedQuad(transformToTarget, FloatQuad(afterCullRect));
-
-    m_pixelsCulledForDrawing += beforeCullArea - afterCullArea;
-}
-
-void CCOverdrawMetrics::didDraw(const WebTransformationMatrix& transformToTarget, const IntRect& afterCullRect, const IntRect& opaqueRect)
-{
-    if (!m_recordMetricsForFrame)
-        return;
-
-    float afterCullArea = areaOfMappedQuad(transformToTarget, FloatQuad(afterCullRect));
-    float afterCullOpaqueArea = areaOfMappedQuad(transformToTarget, FloatQuad(intersection(opaqueRect, afterCullRect)));
-
-    m_pixelsDrawnOpaque += afterCullOpaqueArea;
-    m_pixelsDrawnTranslucent += afterCullArea - afterCullOpaqueArea;
-}
-
-void CCOverdrawMetrics::recordMetrics(const CCLayerTreeHost* layerTreeHost) const
-{
-    if (m_recordMetricsForFrame)
-        recordMetricsInternal<CCLayerTreeHost>(UpdateAndCommit, layerTreeHost);
-}
-
-void CCOverdrawMetrics::recordMetrics(const CCLayerTreeHostImpl* layerTreeHost) const
-{
-    if (m_recordMetricsForFrame)
-        recordMetricsInternal<CCLayerTreeHostImpl>(DrawingToScreen, layerTreeHost);
-}
-
-template<typename LayerTreeHostType>
-void CCOverdrawMetrics::recordMetricsInternal(MetricsType metricsType, const LayerTreeHostType* layerTreeHost) const
-{
-    // This gives approximately 10x the percentage of pixels to fill the viewport once.
-    float normalization = 1000.f / (layerTreeHost->deviceViewportSize().width() * layerTreeHost->deviceViewportSize().height());
-    // This gives approximately 100x the percentage of tiles to fill the viewport once, if all tiles were 256x256.
-    float tileNormalization = 10000.f / (layerTreeHost->deviceViewportSize().width() / 256.f * layerTreeHost->deviceViewportSize().height() / 256.f);
-    // This gives approximately 10x the percentage of bytes to fill the viewport once, assuming 4 bytes per pixel.
-    float byteNormalization = normalization / 4;
-
-    switch (metricsType) {
-    case DrawingToScreen:
-        WebKit::Platform::current()->histogramCustomCounts("Renderer4.pixelCountOpaque_Draw", static_cast<int>(normalization * m_pixelsDrawnOpaque), 100, 1000000, 50);
-        WebKit::Platform::current()->histogramCustomCounts("Renderer4.pixelCountTranslucent_Draw", static_cast<int>(normalization * m_pixelsDrawnTranslucent), 100, 1000000, 50);
-        WebKit::Platform::current()->histogramCustomCounts("Renderer4.pixelCountCulled_Draw", static_cast<int>(normalization * m_pixelsCulledForDrawing), 100, 1000000, 50);
-
-        {
-            TRACE_COUNTER_ID1("cc", "DrawPixelsCulled", layerTreeHost, m_pixelsCulledForDrawing);
-            TRACE_EVENT2("cc", "CCOverdrawMetrics", "PixelsDrawnOpaque", m_pixelsDrawnOpaque, "PixelsDrawnTranslucent", m_pixelsDrawnTranslucent);
-        }
-        break;
-    case UpdateAndCommit:
-        WebKit::Platform::current()->histogramCustomCounts("Renderer4.pixelCountPainted", static_cast<int>(normalization * m_pixelsPainted), 100, 1000000, 50);
-        WebKit::Platform::current()->histogramCustomCounts("Renderer4.pixelCountOpaque_Upload", static_cast<int>(normalization * m_pixelsUploadedOpaque), 100, 1000000, 50);
-        WebKit::Platform::current()->histogramCustomCounts("Renderer4.pixelCountTranslucent_Upload", static_cast<int>(normalization * m_pixelsUploadedTranslucent), 100, 1000000, 50);
-        WebKit::Platform::current()->histogramCustomCounts("Renderer4.tileCountCulled_Upload", static_cast<int>(tileNormalization * m_tilesCulledForUpload), 100, 10000000, 50);
-        WebKit::Platform::current()->histogramCustomCounts("Renderer4.renderSurfaceTextureBytes_ViewportScaled", static_cast<int>(byteNormalization * m_renderSurfaceTextureUseBytes), 10, 1000000, 50);
-        WebKit::Platform::current()->histogramCustomCounts("Renderer4.renderSurfaceTextureBytes_Unscaled", static_cast<int>(m_renderSurfaceTextureUseBytes / 1000), 1000, 100000000, 50);
-        WebKit::Platform::current()->histogramCustomCounts("Renderer4.contentsTextureBytes_ViewportScaled", static_cast<int>(byteNormalization * m_contentsTextureUseBytes), 10, 1000000, 50);
-        WebKit::Platform::current()->histogramCustomCounts("Renderer4.contentsTextureBytes_Unscaled", static_cast<int>(m_contentsTextureUseBytes / 1000), 1000, 100000000, 50);
-
-        {
-            TRACE_COUNTER_ID1("cc", "UploadTilesCulled", layerTreeHost, m_tilesCulledForUpload);
-            TRACE_EVENT2("cc", "CCOverdrawMetrics", "PixelsUploadedOpaque", m_pixelsUploadedOpaque, "PixelsUploadedTranslucent", m_pixelsUploadedTranslucent);
-        }
-        {
-            // This must be in a different scope than the TRACE_EVENT2 above.
-            TRACE_EVENT1("cc", "CCOverdrawPaintMetrics", "PixelsPainted", m_pixelsPainted);
-        }
-        {
-            // This must be in a different scope than the TRACE_EVENTs above.
-            TRACE_EVENT2("cc", "CCOverdrawPaintMetrics", "ContentsTextureBytes", m_contentsTextureUseBytes, "RenderSurfaceTextureBytes", m_renderSurfaceTextureUseBytes);
-        }
-        break;
-    }
-}
-
-} // namespace cc
-
-#endif