commit 467759fb28d1a7764fc7291ec52071b07fb7b84d
author Ramakant Singh <ramaka@codeaurora.org> Wed Apr 16 11:09:40 2014 +0530
committer Sravan Kumar D.V.N <sravank1@codeaurora.org> Mon May 26 13:59:22 2014 +0530
tree 27c4a9b4e6d490435b058e95425dcd14ecb7b80e
parent 0def28c653ec1f0b10153a0252a004a047d774e9

hwc : Add support for ABC in MDP3

In display list if one layer has same parameters
as framebuffer on index '0'. Use this layer
as FB and blit other layer(s) on top of it.

Change-Id: If38712781f24a2e27686d2b370643f51a9b05358

libhwcomposer/hwc_utils.cpp

diff --git a/libhwcomposer/hwc_utils.cpp b/libhwcomposer/hwc_utils.cpp
index ea3aecb..18ae28f 100644
--- a/libhwcomposer/hwc_utils.cpp
+++ b/libhwcomposer/hwc_utils.cpp
@@ -1333,7 +1333,15 @@
                         list->hwLayers[i].acquireFenceFd >= 0) {
             if(UNLIKELY(swapzero))
                 acquireFd[count++] = -1;
-            else
+            // if ABC is enabled for more than one layer.
+            // renderBufIndexforABC will work as FB.Hence
+            // set the acquireFD from fd - which is coming from copybit
+            else if(fd >= 0 && (isAbcInUse(ctx) == true)) {
+                if(ctx->listStats[dpy].renderBufIndexforABC ==(int32_t)i)
+                   acquireFd[count++] = fd;
+                else
+                   continue;
+            } else
                 acquireFd[count++] = list->hwLayers[i].acquireFenceFd;
         }
         if(list->hwLayers[i].compositionType == HWC_FRAMEBUFFER_TARGET) {
@@ -1386,10 +1394,15 @@
 #ifdef QCOM_BSP
                 //If rotator has not already populated this field
                 // & if it's a not VPU layer
-                if((list->hwLayers[i].compositionType == HWC_BLIT)&&
-                                        (isAbcInUse(ctx) == false)){
-                    //For Blit, the app layers should be released when the Blit is
-                    //complete. This fd was passed from copybit->draw
+
+                // if ABC is enabled for more than one layer
+                if(fd >= 0 && (isAbcInUse(ctx) == true) &&
+                  ctx->listStats[dpy].renderBufIndexforABC !=(int32_t)i){
+                    list->hwLayers[i].releaseFenceFd = dup(fd);
+                } else if((list->hwLayers[i].compositionType == HWC_BLIT)&&
+                                               (isAbcInUse(ctx) == false)){
+                    //For Blit, the app layers should be released when the Blit
+                    //is complete. This fd was passed from copybit->draw
                     list->hwLayers[i].releaseFenceFd = dup(fd);
                 } else
 #endif