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// 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 "cc/debug_rect_history.h"
#include "cc/damage_tracker.h"
#include "cc/layer_impl.h"
#include "cc/layer_tree_host.h"
#include "cc/math_util.h"
namespace cc {
// static
scoped_ptr<DebugRectHistory> DebugRectHistory::create() {
return make_scoped_ptr(new DebugRectHistory());
}
DebugRectHistory::DebugRectHistory()
{
}
DebugRectHistory::~DebugRectHistory()
{
}
void DebugRectHistory::saveDebugRectsForCurrentFrame(LayerImpl* rootLayer, const std::vector<LayerImpl*>& renderSurfaceLayerList, const std::vector<gfx::Rect>& occludingScreenSpaceRects, const std::vector<gfx::Rect>& nonOccludingScreenSpaceRects, const LayerTreeDebugState& debugState)
{
// For now, clear all rects from previous frames. In the future we may want to store
// all debug rects for a history of many frames.
m_debugRects.clear();
if (debugState.showPaintRects)
savePaintRects(rootLayer);
if (debugState.showPropertyChangedRects)
savePropertyChangedRects(renderSurfaceLayerList);
if (debugState.showSurfaceDamageRects)
saveSurfaceDamageRects(renderSurfaceLayerList);
if (debugState.showScreenSpaceRects)
saveScreenSpaceRects(renderSurfaceLayerList);
if (debugState.showOccludingRects)
saveOccludingRects(occludingScreenSpaceRects);
if (debugState.showNonOccludingRects)
saveNonOccludingRects(nonOccludingScreenSpaceRects);
}
void DebugRectHistory::savePaintRects(LayerImpl* layer)
{
// We would like to visualize where any layer's paint rect (update rect) has changed,
// regardless of whether this layer is skipped for actual drawing or not. Therefore
// we traverse recursively over all layers, not just the render surface list.
if (!layer->updateRect().IsEmpty() && layer->drawsContent()) {
float widthScale = layer->contentBounds().width() / static_cast<float>(layer->bounds().width());
float heightScale = layer->contentBounds().height() / static_cast<float>(layer->bounds().height());
gfx::RectF updateContentRect = gfx::ScaleRect(layer->updateRect(), widthScale, heightScale);
m_debugRects.push_back(DebugRect(PaintRectType, MathUtil::mapClippedRect(layer->screenSpaceTransform(), updateContentRect)));
}
for (unsigned i = 0; i < layer->children().size(); ++i)
savePaintRects(layer->children()[i]);
}
void DebugRectHistory::savePropertyChangedRects(const std::vector<LayerImpl*>& renderSurfaceLayerList)
{
for (int surfaceIndex = renderSurfaceLayerList.size() - 1; surfaceIndex >= 0 ; --surfaceIndex) {
LayerImpl* renderSurfaceLayer = renderSurfaceLayerList[surfaceIndex];
RenderSurfaceImpl* renderSurface = renderSurfaceLayer->renderSurface();
DCHECK(renderSurface);
const std::vector<LayerImpl*>& layerList = renderSurface->layerList();
for (unsigned layerIndex = 0; layerIndex < layerList.size(); ++layerIndex) {
LayerImpl* layer = layerList[layerIndex];
if (LayerTreeHostCommon::renderSurfaceContributesToTarget<LayerImpl>(layer, renderSurfaceLayer->id()))
continue;
if (layer->layerIsAlwaysDamaged())
continue;
if (layer->layerPropertyChanged() || layer->layerSurfacePropertyChanged())
m_debugRects.push_back(DebugRect(PropertyChangedRectType, MathUtil::mapClippedRect(layer->screenSpaceTransform(), gfx::RectF(gfx::PointF(), layer->contentBounds()))));
}
}
}
void DebugRectHistory::saveSurfaceDamageRects(const std::vector<LayerImpl* >& renderSurfaceLayerList)
{
for (int surfaceIndex = renderSurfaceLayerList.size() - 1; surfaceIndex >= 0 ; --surfaceIndex) {
LayerImpl* renderSurfaceLayer = renderSurfaceLayerList[surfaceIndex];
RenderSurfaceImpl* renderSurface = renderSurfaceLayer->renderSurface();
DCHECK(renderSurface);
m_debugRects.push_back(DebugRect(SurfaceDamageRectType, MathUtil::mapClippedRect(renderSurface->screenSpaceTransform(), renderSurface->damageTracker()->current_damage_rect())));
}
}
void DebugRectHistory::saveScreenSpaceRects(const std::vector<LayerImpl* >& renderSurfaceLayerList)
{
for (int surfaceIndex = renderSurfaceLayerList.size() - 1; surfaceIndex >= 0 ; --surfaceIndex) {
LayerImpl* renderSurfaceLayer = renderSurfaceLayerList[surfaceIndex];
RenderSurfaceImpl* renderSurface = renderSurfaceLayer->renderSurface();
DCHECK(renderSurface);
m_debugRects.push_back(DebugRect(ScreenSpaceRectType, MathUtil::mapClippedRect(renderSurface->screenSpaceTransform(), renderSurface->contentRect())));
if (renderSurfaceLayer->replicaLayer())
m_debugRects.push_back(DebugRect(ReplicaScreenSpaceRectType, MathUtil::mapClippedRect(renderSurface->replicaScreenSpaceTransform(), renderSurface->contentRect())));
}
}
void DebugRectHistory::saveOccludingRects(const std::vector<gfx::Rect>& occludingRects)
{
for (size_t i = 0; i < occludingRects.size(); ++i)
m_debugRects.push_back(DebugRect(OccludingRectType, occludingRects[i]));
}
void DebugRectHistory::saveNonOccludingRects(const std::vector<gfx::Rect>& nonOccludingRects)
{
for (size_t i = 0; i < nonOccludingRects.size(); ++i)
m_debugRects.push_back(DebugRect(NonOccludingRectType, nonOccludingRects[i]));
}
} // namespace cc
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