commit 522ce66a3ee9f3a28a35929de9d105babe5644fe
author Naseer Ahmed <naseer@codeaurora.org> Mon Mar 18 20:14:05 2013 -0400
committer Gerrit - the friendly Code Review server <code-review@localhost> Tue Aug 20 15:40:42 2013 -0700
tree 1db0821b91b22b13031f7cca19bce470beaaf3fb
parent e36a9c2f1aa602859cc9c2f941a321c04e75e4ea

hwc: Add support for plane alpha

HWC 1.2 API passes down the plane alpha and the blending
operation to apply. Pass this information to the MDP.

Change-Id: I7fbd17345d9157aa654e4b1031ac3e26adf87f37

libhwcomposer/hwc_fbupdate.cpp

diff --git a/libhwcomposer/hwc_fbupdate.cpp b/libhwcomposer/hwc_fbupdate.cpp
index ba3b5d2..79baa90 100644
--- a/libhwcomposer/hwc_fbupdate.cpp
+++ b/libhwcomposer/hwc_fbupdate.cpp
@@ -171,7 +171,10 @@
         orient = ovutils::OVERLAY_TRANSFORM_0;
         transform = 0;
         ovutils::PipeArgs parg(mdpFlags, info, zOrder, isFg,
-                                static_cast<ovutils::eRotFlags>(rotFlags));
+                               static_cast<ovutils::eRotFlags>(rotFlags),
+                               ovutils::DEFAULT_PLANE_ALPHA,
+                               (ovutils::eBlending)
+                               getBlending(layer->blending));
         ret = true;
         if(configMdp(ctx->mOverlay, parg, orient, sourceCrop, displayFrame,
                     NULL, mDest) < 0) {
@@ -268,11 +271,16 @@
 
         ovutils::eZorder zOrder = static_cast<ovutils::eZorder>(fbZorder);
 
+        //XXX: FB layer plane alpha is currently sent as zero from
+        //surfaceflinger
         ovutils::PipeArgs pargL(mdpFlagsL,
                                 info,
                                 zOrder,
                                 ovutils::IS_FG_OFF,
-                                ovutils::ROT_FLAGS_NONE);
+                                ovutils::ROT_FLAGS_NONE,
+                                ovutils::DEFAULT_PLANE_ALPHA,
+                                (ovutils::eBlending)
+                                getBlending(layer->blending));
         ov.setSource(pargL, destL);
 
         ovutils::eMdpFlags mdpFlagsR = mdpFlagsL;
@@ -281,7 +289,10 @@
                                 info,
                                 zOrder,
                                 ovutils::IS_FG_OFF,
-                                ovutils::ROT_FLAGS_NONE);
+                                ovutils::ROT_FLAGS_NONE,
+                                ovutils::DEFAULT_PLANE_ALPHA,
+                                (ovutils::eBlending)
+                                getBlending(layer->blending));
         ov.setSource(pargR, destR);
 
         hwc_rect_t sourceCrop = layer->sourceCrop;