hwc: Use intermediate buffers for copybit
The earlier copybit solution involved blitting directly into
the SurfaceFlinger's framebuffer target. That solution involved
unnecessary framework changes and caused issues when the
framebuffer was being written to both by GL and copybit.
Update hwc_copybit to use our own buffers for this purpose.
We also make sure we display only the region we're interested in
so that unnecessary artifacts from previous blits do not show up
on the display. This way, we can avoid clearing the intermediate
buffers every frame.
Change-Id: I713b3fc606e0768444c621af76853ece41964da1
diff --git a/libhwcomposer/hwc_utils.h b/libhwcomposer/hwc_utils.h
index 671fbba..187c43a 100644
--- a/libhwcomposer/hwc_utils.h
+++ b/libhwcomposer/hwc_utils.h
@@ -56,6 +56,7 @@
class MDPComp;
class CopyBit;
+
struct MDPInfo {
int version;
char panel;
@@ -97,6 +98,7 @@
// LayerProp::flag values
enum {
HWC_MDPCOMP = 0x00000001,
+ HWC_COPYBIT = 0x00000002,
};
class LayerCache {
@@ -132,6 +134,8 @@
//Crops source buffer against destination and FB boundaries
void calculate_crop_rects(hwc_rect_t& crop, hwc_rect_t& dst,
const hwc_rect_t& scissor, int orient);
+void getNonWormholeRegion(hwc_display_contents_1_t* list,
+ hwc_rect_t& nwr);
bool isSecuring(hwc_context_t* ctx);
bool isSecureModePolicy(int mdpVersion);
bool isExternalActive(hwc_context_t* ctx);
@@ -185,6 +189,9 @@
return (hnd && (hnd->flags & private_handle_t::PRIV_FLAGS_EXTERNAL_CC));
}
+template<typename T> inline T max(T a, T b) { return (a > b) ? a : b; }
+template<typename T> inline T min(T a, T b) { return (a < b) ? a : b; }
+
// Initialize uevent thread
void init_uevent_thread(hwc_context_t* ctx);
// Initialize vsync thread