HWC/copybit : Add support to indicate driver on layer with Zorder 0
Some applications send RGBA layer with constant alpha 0xFF and
isOpaque=1. For these types of layer we don't get any wormHole
regions. Hence we see the previous content (framebuffer) due to
wrong selection of blending logic at kernel side.
To fix these kind of issues on MDP3 we make layer with Z order
zero as FG layer. This makes sure that proper blending logic
is chosen in kernel.
CRs-fixed: 521638
CRs-fixed: 517944
Change-Id: I172a46c3284916264a1413a6a16875afea2b1aad
diff --git a/libhwcomposer/hwc_copybit.h b/libhwcomposer/hwc_copybit.h
index 31de9ee..03fe950 100644
--- a/libhwcomposer/hwc_copybit.h
+++ b/libhwcomposer/hwc_copybit.h
@@ -49,7 +49,7 @@
struct copybit_device_t *mEngine;
// Helper functions for copybit composition
int drawLayerUsingCopybit(hwc_context_t *dev, hwc_layer_1_t *layer,
- private_handle_t *renderBuffer, int dpy);
+ private_handle_t *renderBuffer, int dpy, bool isFG);
bool canUseCopybitForYUV (hwc_context_t *ctx);
bool canUseCopybitForRGB (hwc_context_t *ctx,
hwc_display_contents_1_t *list, int dpy);