Remove GrFragmentProcessor::computeInvariantOutput

Change-Id: If475730103052c6097eb91be06808fb723b70bf8
Reviewed-on: https://skia-review.googlesource.com/8330
Reviewed-by: Greg Daniel <egdaniel@google.com>
Commit-Queue: Brian Salomon <bsalomon@google.com>

1 files changed, 0 insertions, 12 deletions

diff --git a/src/effects/SkDisplacementMapEffect.cpp b/src/effects/SkDisplacementMapEffect.cpp
index 67fb761ed4..6b9cb2b4ed 100644
--- a/src/effects/SkDisplacementMapEffect.cpp
+++ b/src/effects/SkDisplacementMapEffect.cpp
@@ -16,7 +16,6 @@
 #if SK_SUPPORT_GPU
 #include "GrContext.h"
 #include "GrCoordTransform.h"
-#include "GrInvariantOutput.h"
 #include "GrRenderTargetContext.h"
 #include "GrTextureProxy.h"
 
@@ -250,8 +249,6 @@ private:
 
     bool onIsEqual(const GrFragmentProcessor&) const override;
 
-    void onComputeInvariantOutput(GrInvariantOutput* inout) const override;
-
     GrDisplacementMapEffect(SkDisplacementMapEffect::ChannelSelectorType xChannelSelector,
                             SkDisplacementMapEffect::ChannelSelectorType yChannelSelector,
                             const SkVector& scale,
@@ -524,15 +521,6 @@ bool GrDisplacementMapEffect::onIsEqual(const GrFragmentProcessor& sBase) const
            fScale == s.fScale;
 }
 
-void GrDisplacementMapEffect::onComputeInvariantOutput(GrInvariantOutput* inout) const {
-    // Any displacement offset bringing a pixel out of bounds will output a color of (0,0,0,0),
-    // so the only way we'd get a constant alpha is if the input color image has a constant alpha
-    // and no displacement offset push any texture coordinates out of bounds OR if the constant
-    // alpha is 0. Since this isn't trivial to compute at this point, let's assume the output is
-    // not of constant color when a displacement effect is applied.
-    inout->setToUnknown();
-}
-
 ///////////////////////////////////////////////////////////////////////////////
 
 GR_DEFINE_FRAGMENT_PROCESSOR_TEST(GrDisplacementMapEffect);