Handle empty HWC layer list when composing
Bug: 6777877 Change-Id: I71e9b948d04dda33d45cfa986d9c7e28328cf749
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@ -1151,11 +1151,11 @@ void SurfaceFlinger::composeSurfaces(const DisplayHardware& hw, const Region& di
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const Vector< sp<LayerBase> >& layers(hw.getVisibleLayersSortedByZ());
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const size_t count = layers.size();
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const Transform& tr = hw.getTransform();
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for (size_t i=0 ; cur!=end && i<count ; ++i, ++cur) {
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for (size_t i=0 ; i<count ; ++i) {
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const sp<LayerBase>& layer(layers[i]);
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const Region clip(dirty.intersect(tr.transform(layer->visibleRegion)));
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if (!clip.isEmpty()) {
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if (cur->getCompositionType() == HWC_OVERLAY) {
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if (cur != end && cur->getCompositionType() == HWC_OVERLAY) {
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if (i && (cur->getHints() & HWC_HINT_CLEAR_FB)
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&& layer->isOpaque()) {
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// never clear the very first layer since we're
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@ -1167,6 +1167,9 @@ void SurfaceFlinger::composeSurfaces(const DisplayHardware& hw, const Region& di
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// render the layer
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layer->draw(hw, clip);
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}
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if (cur != end) {
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++cur;
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}
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}
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}
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}
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