GrFP can express distance vector field req., program builder declares variable for it

src/gpu/gl/GrGLProgramDesc.cpp

Index: src/gpu/gl/GrGLProgramDesc.cpp
diff --git a/src/gpu/gl/GrGLProgramDesc.cpp b/src/gpu/gl/GrGLProgramDesc.cpp
index 801224c9b6744b61c3af3af9947c89dba8775f6b..741da86e82ae25e5b323bf96ee784cb26ba6fa6a 100644
--- a/src/gpu/gl/GrGLProgramDesc.cpp
+++ b/src/gpu/gl/GrGLProgramDesc.cpp
@@ -182,6 +182,12 @@ bool GrGLProgramDescBuilder::Build(GrProgramDesc* desc,
         header->fIgnoresCoverage = 0;
     }
 
+    if (pipeline.usesDistanceVectorField()) {

[egdaniel, 2016/07/12 13:46:42]

I know I said we should add this to the key here, but now that I think about
this more, I feel like the use of it would already be captured by the class id
key of the processor who reads it.

[dvonbeck, 2016/07/13 15:17:13]

The GeoProc?

[dvonbeck, 2016/07/13 19:07:15]

Oh, the FP! That makes sense. I removed this code.

+        header->fUsesDistanceVectorField = 1;
+    } else {
+        header->fUsesDistanceVectorField = 0;
+    }
+
     header->fSnapVerticesToPixelCenters = pipeline.snapVerticesToPixelCenters();
     header->fColorEffectCnt = pipeline.numColorFragmentProcessors();
     header->fCoverageEffectCnt = pipeline.numCoverageFragmentProcessors();