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_utils.cpp

diff --git a/libhwcomposer/hwc_utils.cpp b/libhwcomposer/hwc_utils.cpp
index 0e2eb2e..01e4c6d 100644
--- a/libhwcomposer/hwc_utils.cpp
+++ b/libhwcomposer/hwc_utils.cpp
@@ -545,6 +545,18 @@
         return false;
 }
 
+int getBlending(int blending) {
+    switch(blending) {
+    case HWC_BLENDING_NONE:
+        return overlay::utils::OVERLAY_BLENDING_OPAQUE;
+    case HWC_BLENDING_PREMULT:
+        return overlay::utils::OVERLAY_BLENDING_PREMULT;
+    case HWC_BLENDING_COVERAGE :
+    default:
+        return overlay::utils::OVERLAY_BLENDING_COVERAGE;
+    }
+}
+
 //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) {
@@ -1035,7 +1047,10 @@
     //For the mdp, since either we are pre-rotating or MDP does flips
     orient = OVERLAY_TRANSFORM_0;
     transform = 0;
-    PipeArgs parg(mdpFlags, whf, z, isFg, static_cast<eRotFlags>(rotFlags));
+    PipeArgs parg(mdpFlags, whf, z, isFg,
+                  static_cast<eRotFlags>(rotFlags), layer->planeAlpha,
+                  (ovutils::eBlending) getBlending(layer->blending));
+
     if(configMdp(ctx->mOverlay, parg, orient, crop, dst, metadata, dest) < 0) {
         ALOGE("%s: commit failed for low res panel", __FUNCTION__);
         return -1;
@@ -1164,7 +1179,9 @@
     //configure left mixer
     if(lDest != OV_INVALID) {
         PipeArgs pargL(mdpFlagsL, whf, z, isFg,
-                static_cast<eRotFlags>(rotFlags));
+                       static_cast<eRotFlags>(rotFlags), layer->planeAlpha,
+                       (ovutils::eBlending) getBlending(layer->blending));
+
         if(configMdp(ctx->mOverlay, pargL, orient,
                 tmp_cropL, tmp_dstL, metadata, lDest) < 0) {
             ALOGE("%s: commit failed for left mixer config", __FUNCTION__);
@@ -1175,7 +1192,9 @@
     //configure right mixer
     if(rDest != OV_INVALID) {
         PipeArgs pargR(mdpFlagsR, whf, z, isFg,
-                static_cast<eRotFlags>(rotFlags));
+                       static_cast<eRotFlags>(rotFlags),
+                       layer->planeAlpha,
+                       (ovutils::eBlending) getBlending(layer->blending));
         tmp_dstR.right = tmp_dstR.right - lSplit;
         tmp_dstR.left = tmp_dstR.left - lSplit;
         if(configMdp(ctx->mOverlay, pargR, orient,