void CCLayerTreeHostImpl::calculateRenderPasses(CCRenderPassList& passes, CCLayerList& renderSurfaceLayerList)
{
renderSurfaceLayerList.append(rootLayer());
if (!rootLayer()->renderSurface())
rootLayer()->createRenderSurface();
rootLayer()->renderSurface()->clearLayerList();
rootLayer()->renderSurface()->setContentRect(IntRect(IntPoint(), viewportSize()));
rootLayer()->setClipRect(IntRect(IntPoint(), viewportSize()));
{
TransformationMatrix identityMatrix;
TRACE_EVENT("CCLayerTreeHostImpl::calcDrawEtc", this, 0);
CCLayerTreeHostCommon::calculateDrawTransformsAndVisibility(rootLayer(), rootLayer(), identityMatrix, identityMatrix, renderSurfaceLayerList, rootLayer()->renderSurface()->layerList(), &m_layerSorter, layerRendererCapabilities().maxTextureSize);
}
if (layerRendererCapabilities().usingPartialSwap)
trackDamageForAllSurfaces(rootLayer(), renderSurfaceLayerList);
m_rootDamageRect = rootLayer()->renderSurface()->damageTracker()->currentDamageRect();
for (int surfaceIndex = renderSurfaceLayerList.size() - 1; surfaceIndex >= 0 ; --surfaceIndex) {
CCLayerImpl* renderSurfaceLayer = renderSurfaceLayerList[surfaceIndex];
CCRenderSurface* renderSurface = renderSurfaceLayer->renderSurface();
OwnPtr<CCRenderPass> pass = CCRenderPass::create(renderSurface);
FloatRect surfaceDamageRect;
if (layerRendererCapabilities().usingPartialSwap)
surfaceDamageRect = damageInSurfaceSpace(renderSurfaceLayer, m_rootDamageRect);
pass->setSurfaceDamageRect(surfaceDamageRect);
const CCLayerList& layerList = renderSurface->layerList();
for (unsigned layerIndex = 0; layerIndex < layerList.size(); ++layerIndex) {
CCLayerImpl* layer = layerList[layerIndex];
if (layer->visibleLayerRect().isEmpty())
continue;
if (CCLayerTreeHostCommon::renderSurfaceContributesToTarget(layer, renderSurfaceLayer->id())) {
pass->appendQuadsForRenderSurfaceLayer(layer);
continue;
}
layer->willDraw(m_layerRenderer.get());
pass->appendQuadsForLayer(layer);
}
passes.append(pass.release());
}
}
void CCLayerTreeHostImpl::optimizeRenderPasses(CCRenderPassList& passes)
{
TRACE_EVENT1("webkit", "CCLayerTreeHostImpl::optimizeRenderPasses", "passes.size()", static_cast<long long unsigned>(passes.size()));
bool haveDamageRect = layerRendererCapabilities().usingPartialSwap;
// FIXME: compute overdraw metrics only occasionally, not every frame.
CCOverdrawCounts overdrawCounts;
for (unsigned i = 0; i < passes.size(); ++i) {
FloatRect damageRect = passes[i]->targetSurface()->damageTracker()->currentDamageRect();
passes[i]->optimizeQuads(haveDamageRect, damageRect, &overdrawCounts);
}
float normalization = 1000.f / (m_layerRenderer->viewportWidth() * m_layerRenderer->viewportHeight());
PlatformSupport::histogramCustomCounts("Renderer4.pixelOverdrawOpaque", static_cast<int>(normalization * overdrawCounts.m_pixelsDrawnOpaque), 100, 1000000, 50);
PlatformSupport::histogramCustomCounts("Renderer4.pixelOverdrawTransparent", static_cast<int>(normalization * overdrawCounts.m_pixelsDrawnTransparent), 100, 1000000, 50);
PlatformSupport::histogramCustomCounts("Renderer4.pixelOverdrawCulled", static_cast<int>(normalization * overdrawCounts.m_pixelsCulled), 100, 1000000, 50);
}
void CCLayerTreeHost::updateLayers(LayerChromium* rootLayer, CCTextureUpdater& updater)
{
TRACE_EVENT("CCLayerTreeHost::updateLayers", this, 0);
if (!rootLayer->renderSurface())
rootLayer->createRenderSurface();
rootLayer->renderSurface()->setContentRect(IntRect(IntPoint(0, 0), viewportSize()));
IntRect rootClipRect(IntPoint(), viewportSize());
rootLayer->setClipRect(rootClipRect);
LayerList updateList;
updateList.append(rootLayer);
RenderSurfaceChromium* rootRenderSurface = rootLayer->renderSurface();
rootRenderSurface->clearLayerList();
TransformationMatrix identityMatrix;
{
TRACE_EVENT("CCLayerTreeHost::updateLayers::calcDrawEtc", this, 0);
CCLayerTreeHostCommon::calculateDrawTransformsAndVisibility(rootLayer, rootLayer, identityMatrix, identityMatrix, updateList, rootRenderSurface->layerList(), layerRendererCapabilities().maxTextureSize);
}
// Reset partial texture update requests.
m_partialTextureUpdateRequests = 0;
reserveTextures(updateList);
paintLayerContents(updateList, PaintVisible, updater);
if (!m_triggerIdlePaints)
return;
size_t preferredLimitBytes = m_contentsTextureManager->preferredMemoryLimitBytes();
size_t maxLimitBytes = m_contentsTextureManager->maxMemoryLimitBytes();
m_contentsTextureManager->reduceMemoryToLimit(preferredLimitBytes);
if (m_contentsTextureManager->currentMemoryUseBytes() >= preferredLimitBytes)
return;
// Idle painting should fail when we hit the preferred memory limit,
// otherwise it will always push us towards the maximum limit.
m_contentsTextureManager->setMaxMemoryLimitBytes(preferredLimitBytes);
// The second (idle) paint will be a no-op in layers where painting already occured above.
paintLayerContents(updateList, PaintIdle, updater);
m_contentsTextureManager->setMaxMemoryLimitBytes(maxLimitBytes);
for (size_t i = 0; i < updateList.size(); ++i)
updateList[i]->clearRenderSurface();
}
void CCLayerTreeHost::updateLayers(LayerChromium* rootLayer, CCTextureUpdater& updater)
{
TRACE_EVENT0("cc", "CCLayerTreeHost::updateLayers");
if (!rootLayer->renderSurface())
rootLayer->createRenderSurface();
rootLayer->renderSurface()->setContentRect(IntRect(IntPoint(0, 0), deviceViewportSize()));
IntRect rootClipRect(IntPoint(), deviceViewportSize());
rootLayer->setClipRect(rootClipRect);
LayerList updateList;
updateList.append(rootLayer);
RenderSurfaceChromium* rootRenderSurface = rootLayer->renderSurface();
rootRenderSurface->clearLayerList();
{
TRACE_EVENT0("cc", "CCLayerTreeHost::updateLayers::calcDrawEtc");
WebTransformationMatrix identityMatrix;
WebTransformationMatrix deviceScaleTransform;
deviceScaleTransform.scale(m_deviceScaleFactor);
CCLayerTreeHostCommon::calculateDrawTransforms(rootLayer, rootLayer, deviceScaleTransform, identityMatrix, updateList, rootRenderSurface->layerList(), layerRendererCapabilities().maxTextureSize);
FloatRect rootScissorRect(FloatPoint(0, 0), viewportSize());
CCLayerTreeHostCommon::calculateVisibleAndScissorRects(updateList, rootScissorRect);
}
// Reset partial texture update requests.
m_partialTextureUpdateRequests = 0;
prioritizeTextures(updateList);
bool needMoreUpdates = paintLayerContents(updateList, updater);
if (m_triggerIdleUpdates && needMoreUpdates)
setNeedsCommit();
for (size_t i = 0; i < updateList.size(); ++i)
updateList[i]->clearRenderSurface();
}
