commit c3545045e75dc76aacb81034d6be2eb35ff023d1
author Dileep Kumar Reddi <dkumarre@codeaurora.org> Wed Mar 11 19:37:06 2015 +0530
committer Gerrit - the friendly Code Review server <code-review@localhost> Fri Mar 13 14:50:25 2015 -0700
tree 8698fb592d3aaca0bab757c1a05a8f7866247284
parent 51c08146fd7e43944a06ac1e99a35e3b883881bd

hwc: Do not enable swaprect when rotation is involved

In case of updating layer without rotation and layer below has rotation,
blit will fail because of the change in destination rect values and
may result flickers on screen.

Change-Id: Ia7fffaaf92b8799512aba48fb7859a6ff106508c

libhwcomposer/hwc_copybit.cpp

diff --git a/libhwcomposer/hwc_copybit.cpp b/libhwcomposer/hwc_copybit.cpp
index 7bb5f60..744195f 100644
--- a/libhwcomposer/hwc_copybit.cpp
+++ b/libhwcomposer/hwc_copybit.cpp
@@ -183,7 +183,8 @@
        for (int k = ctx->listStats[dpy].numAppLayers-1; k >= 0 ; k--) {
            //disable swap rect in case of scaling and video .
            private_handle_t *hnd =(private_handle_t *)list->hwLayers[k].handle;
-           if(needsScaling(&list->hwLayers[k])||( hnd && isYuvBuffer(hnd))) {
+           if(needsScaling(&list->hwLayers[k])||( hnd && isYuvBuffer(hnd)) ||
+                   (list->hwLayers[k].transform & HAL_TRANSFORM_ROT_90)) {
                mFbCache.reset();
                return -1;
            }