commit 86c1f71625970610e768d3bf26c933db2cd685ba
author bsalomon@google.com <bsalomon@google.com@2bbb7eff-a529-9590-31e7-b0007b416f81> Wed Oct 12 14:54:26 2011 +0000
committer bsalomon@google.com <bsalomon@google.com@2bbb7eff-a529-9590-31e7-b0007b416f81> Wed Oct 12 14:54:26 2011 +0000
tree caba35de5e5086b3f7e93623d4650cba0330a7db
parent d9f2dea5328c9ab455852f2e4928cca7c71c6b05

Gpu blend optimizations, handle more xfer modes with fractional pixel coverage

Review URL: http://codereview.appspot.com/5237062/



git-svn-id: http://skia.googlecode.com/svn/trunk@2464 2bbb7eff-a529-9590-31e7-b0007b416f81

gpu/src/GrGpuGL.cpp

diff --git a/gpu/src/GrGpuGL.cpp b/gpu/src/GrGpuGL.cpp
index ffbb557..b27815b 100644
--- a/gpu/src/GrGpuGL.cpp
+++ b/gpu/src/GrGpuGL.cpp
@@ -1811,8 +1811,8 @@
     }
 }
 
-void GrGpuGL::flushBlend(GrPrimitiveType type, 
-                         GrBlendCoeff srcCoeff, 
+void GrGpuGL::flushBlend(GrPrimitiveType type,
+                         GrBlendCoeff srcCoeff,
                          GrBlendCoeff dstCoeff) {
     if (GrIsPrimTypeLines(type) && this->willUseHWAALines()) {
         if (fHWBlendDisabled) {
@@ -1827,7 +1827,11 @@
             fHWDrawState.fDstBlend = kISA_BlendCoeff;
         }
     } else {
-        bool blendOff = canDisableBlend();
+        // any optimization to disable blending should
+        // have already been applied and tweaked the coeffs
+        // to (1, 0).
+        bool blendOff = kOne_BlendCoeff == srcCoeff &&
+                        kZero_BlendCoeff == dstCoeff;
         if (fHWBlendDisabled != blendOff) {
             if (blendOff) {
                 GL_CALL(Disable(GR_GL_BLEND));