commit b00f59d79ea7ef79fc18ff5b8de3bc5053c8cb8a
author Sushil Chauhan <sushilchauhan@codeaurora.org> Mon Apr 29 18:35:54 2013 -0700
committer Sushil Chauhan <sushilchauhan@codeaurora.org> Tue Apr 30 16:35:06 2013 -0700
tree 5325cc9400af811d34ffb6e284fb8d04dc7b57c3
parent d092e660ad08367ac2c9fd101f54356b2ee99a7e

hwc/copybit: Add check for Max layers support.

Add check in copybit for Max. layers supported by HWC. Increase
max. RGB surfaces to MAX_NUM_LAYERS to support known use cases.

CRs-Fixed: 481226
Change-Id: Ie30ab0ef3047a304133cb547902ae11fecc5db22

libcopybit/copybit_c2d.cpp

diff --git a/libcopybit/copybit_c2d.cpp b/libcopybit/copybit_c2d.cpp
index b804c21..6973704 100644
--- a/libcopybit/copybit_c2d.cpp
+++ b/libcopybit/copybit_c2d.cpp
@@ -105,7 +105,7 @@
 
 // The following defines can be changed as required i.e. as we encounter
 // complex use cases.
-#define MAX_RGB_SURFACES 12        // Max. RGB layers currently supported per draw
+#define MAX_RGB_SURFACES 32       // Max. RGB layers currently supported per draw
 #define MAX_YUV_2_PLANE_SURFACES 4// Max. 2-plane YUV layers currently supported per draw
 #define MAX_YUV_3_PLANE_SURFACES 1// Max. 3-plane YUV layers currently supported per draw
 // +1 for the destination surface. We cannot have multiple destination surfaces.

libhwcomposer/hwc_copybit.cpp

diff --git a/libhwcomposer/hwc_copybit.cpp b/libhwcomposer/hwc_copybit.cpp
index 3f40753..f1bf756 100644
--- a/libhwcomposer/hwc_copybit.cpp
+++ b/libhwcomposer/hwc_copybit.cpp
@@ -158,6 +158,11 @@
         return false;
     }
 
+    if (ctx->listStats[dpy].numAppLayers > MAX_NUM_LAYERS) {
+        // Reached max layers supported by HWC.
+        return false;
+    }
+
     bool useCopybitForYUV = canUseCopybitForYUV(ctx);
     bool useCopybitForRGB = canUseCopybitForRGB(ctx, list, dpy);
     LayerProp *layerProp = ctx->layerProp[dpy];