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Bug 1089040 - Fix HWC opacity check for largers with complex regions. r=sotaro

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--HG--
extra : rebase_source : e80c240766a9e44e738e706b02ba65dd3e74fd83
This commit is contained in:
Benoit Girard 2014-10-29 16:07:11 -04:00
parent 8300e55047
commit 0c3516c497
1 changed files with 4 additions and 1 deletions
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5
widget/gonk/HwcComposer2D.cpp
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@ -447,7 +447,10 @@ HwcComposer2D::PrepareLayerList(Layer* aLayer,
// Do not compose any layer below full-screen Opaque layer
// Note: It can be generalized to non-fullscreen Opaque layers.
bool isOpaque = (opacity == 0xFF) && (aLayer->GetContentFlags() & Layer::CONTENT_OPAQUE);
if (current && isOpaque) {
// Currently we perform opacity calculation using the *bounds* of the layer.
// We can only make this assumption if we're not dealing with a complex visible region.
bool isSimpleVisibleRegion = visibleRegion.GetNumRects() == 1;
if (current && isOpaque && isSimpleVisibleRegion) {
nsIntRect displayRect = nsIntRect(displayFrame.left, displayFrame.top,
displayFrame.right - displayFrame.left, displayFrame.bottom - displayFrame.top);
if (displayRect.Contains(mScreenRect)) {