commit ccb2e384a036f29d989d3c1468f879324e81a678
author egdaniel <egdaniel@google.com> Mon Oct 13 12:53:46 2014 -0700
committer Commit bot <commit-bot@chromium.org> Mon Oct 13 12:53:46 2014 -0700
tree 27e38ca2ad78e3a0f741a1cc6c23899eb22b822c
parent cad5d3e264535c919b80e1e2a85407307961f221

Create helper functions to use in computeInvariantOutput calls

BUG=skia:

Review URL: https://codereview.chromium.org/643743003

src/effects/SkAlphaThresholdFilter.cpp

diff --git a/src/effects/SkAlphaThresholdFilter.cpp b/src/effects/SkAlphaThresholdFilter.cpp
index 7215aa8..823c302 100644
--- a/src/effects/SkAlphaThresholdFilter.cpp
+++ b/src/effects/SkAlphaThresholdFilter.cpp
@@ -229,12 +229,11 @@
 }
 
 void AlphaThresholdEffect::onComputeInvariantOutput(InvariantOutput* inout) const {
-    if (inout->isOpaque() && GrPixelConfigIsOpaque(this->texture(0)->config())) {
-        inout->fValidFlags = kA_GrColorComponentFlag;
+    if (GrPixelConfigIsOpaque(this->texture(0)->config()) && fOuterThreshold >= 1.f) {
+        inout->mulByUnknownOpaqueColor();
     } else {
-        inout->fValidFlags = 0;
+        inout->mulByUnknownColor();
     }
-    inout->fIsSingleComponent = false;
 }
 
 #endif