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), deviceViewportSize()));
IntRect rootClipRect(IntPoint(), deviceViewportSize());
rootLayer->setClipRect(rootClipRect);
LayerList updateList;
updateList.append(rootLayer);
RenderSurfaceChromium* rootRenderSurface = rootLayer->renderSurface();
rootRenderSurface->clearLayerList();
{
TRACE_EVENT("CCLayerTreeHost::updateLayers::calcDrawEtc", this, 0);
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;
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();
}