diff --git a/services/surfaceflinger/SurfaceFlinger.cpp b/services/surfaceflinger/SurfaceFlinger.cpp index 0ef03bb7d..2be6d1889 100644 --- a/services/surfaceflinger/SurfaceFlinger.cpp +++ b/services/surfaceflinger/SurfaceFlinger.cpp @@ -986,19 +986,20 @@ void SurfaceFlinger::setupHardwareComposer(Region& dirtyInOut) 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 >& layers(mVisibleLayersSortedByZ); size_t count = layers.size(); for (size_t i=0 ; i