hwc: Fix Flicker on video start on MDP3 target
Fall back to GPU on MDP3 when Non WormholeRegion is
not of frame buffer size as artifact is seen in
WormholeRegion of previous frame.
CRs-fixed: 531081
Change-Id: Ic597ee9f75178276dd5498400648bfefc990188f
diff --git a/libhwcomposer/hwc_copybit.cpp b/libhwcomposer/hwc_copybit.cpp
index 068e28a..a395ee0 100644
--- a/libhwcomposer/hwc_copybit.cpp
+++ b/libhwcomposer/hwc_copybit.cpp
@@ -127,6 +127,20 @@
return renderArea;
}
+bool checkNonWormholeRegion(private_handle_t* hnd, hwc_rect_t& rect)
+{
+ unsigned int height = rect.bottom - rect.top;
+ unsigned int width = rect.right - rect.left;
+ copybit_image_t buf;
+ buf.w = ALIGN(hnd->width, 32);
+ buf.h = hnd->height;
+
+ if (buf.h != height || buf.w != width)
+ return false;
+
+ return true;
+}
+
bool CopyBit::prepare(hwc_context_t *ctx, hwc_display_contents_1_t *list,
int dpy) {
@@ -181,6 +195,15 @@
if (layer->planeAlpha != 0xFF)
return true;
}
+ /*
+ * Fallback to GPU in MDP3 when NonWormholeRegion is not of frame buffer
+ * size as artifact is seen in WormholeRegion of previous frame.
+ */
+ hwc_rect_t nonWormHoleRegion;
+ getNonWormholeRegion(list, nonWormHoleRegion);
+ if(!checkNonWormholeRegion(fbHnd, nonWormHoleRegion))
+ return true;
+
}
//Allocate render buffers if they're not allocated