commit 8cef67aada2e8776a6741dce6211dc77fc9272df
author junov@chromium.org <junov@chromium.org@2bbb7eff-a529-9590-31e7-b0007b416f81> Thu Oct 11 20:19:15 2012 +0000
committer junov@chromium.org <junov@chromium.org@2bbb7eff-a529-9590-31e7-b0007b416f81> Thu Oct 11 20:19:15 2012 +0000
tree e5bd0e406d8e2f39c033a6e52cbdd0f071c8a866
parent 3ab43d5c5b4d77f46dd0266618f92e5fefce2021

Fixing SkDeferredCanvas to not consider paint as opaque when xfermode source coeff depends
on destination pixel value

TEST=DeferredCanvas unit test
BUG=http://code.google.com/p/chromium/issues/detail?id=154748



git-svn-id: http://skia.googlecode.com/svn/trunk@5907 2bbb7eff-a529-9590-31e7-b0007b416f81

src/utils/SkDeferredCanvas.cpp

diff --git a/src/utils/SkDeferredCanvas.cpp b/src/utils/SkDeferredCanvas.cpp
index c3de393..13b8d28 100644
--- a/src/utils/SkDeferredCanvas.cpp
+++ b/src/utils/SkDeferredCanvas.cpp
@@ -93,6 +93,10 @@
 
     SkXfermode::Coeff srcCoeff, dstCoeff;
     if (SkXfermode::AsCoeff(paint->getXfermode(), &srcCoeff, &dstCoeff)){
+        if (SkXfermode::kDA_Coeff == srcCoeff || SkXfermode::kDC_Coeff == srcCoeff ||
+            SkXfermode::kIDA_Coeff == srcCoeff || SkXfermode::kIDC_Coeff == srcCoeff) {
+            return false;
+        }
         switch (dstCoeff) {
         case SkXfermode::kZero_Coeff:
             return true;