Merge "don't clear the framebuffer when the framebuffer is not used"
diff --git a/services/surfaceflinger/SurfaceFlinger.cpp b/services/surfaceflinger/SurfaceFlinger.cpp
index 09097ee..3f154ce 100644
--- a/services/surfaceflinger/SurfaceFlinger.cpp
+++ b/services/surfaceflinger/SurfaceFlinger.cpp
@@ -986,19 +986,20 @@
void SurfaceFlinger::composeSurfaces(const Region& dirty)
{
- if (UNLIKELY(!mWormholeRegion.isEmpty())) {
+ const DisplayHardware& hw(graphicPlane(0).displayHardware());
+ HWComposer& hwc(hw.getHwComposer());
+
+ const size_t fbLayerCount = hwc.getLayerCount(HWC_FRAMEBUFFER);
+ if (UNLIKELY(fbLayerCount && !mWormholeRegion.isEmpty())) {
// should never happen unless the window manager has a bug
// draw something...
drawWormhole();
}
- const DisplayHardware& hw(graphicPlane(0).displayHardware());
- HWComposer& hwc(hw.getHwComposer());
- hwc_layer_t* const cur(hwc.getLayers());
-
/*
* and then, render the layers targeted at the framebuffer
*/
+ hwc_layer_t* const cur(hwc.getLayers());
const Vector< sp<LayerBase> >& layers(mVisibleLayersSortedByZ);
size_t count = layers.size();
for (size_t i=0 ; i<count ; i++) {