am 02b95105: fix transitions from hwc to GLES composition

        if (hw->canDraw()) {

            // transform the dirty region into this screen's coordinate space

            const Region dirtyRegion(hw->getDirtyRegion(repaintEverything));

            if (!dirtyRegion.isEmpty()) {

            // repaint the framebuffer (if needed)

            doDisplayComposition(hw, dirtyRegion);

            }

            hw->dirtyRegion.clear();

            hw->flip(hw->swapRegion);

            hw->swapRegion.clear();