Program key coverage/discard fixes.

src/gpu/gl/GrGLProgram.h

 /*
  * Copyright 2011 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 
 #ifndef GrGLProgram_DEFINED
 #define GrGLProgram_DEFINED
@@ skipping 147 matching lines @@
         // secondary source is output and what value it holds.
         enum DualSrcOutput {
             kNone_DualSrcOutput,
             kCoverage_DualSrcOutput,
             kCoverageISA_DualSrcOutput,
             kCoverageISC_DualSrcOutput,
 
             kDualSrcOutputCnt
         };
 
-        // should the FS discard if the edge-aa coverage is zero (to avoid stencil manipulation)
-        bool                        fDiscardIfOutsideEdge;
+        // should the FS discard if the coverage is zero (to avoid stencil manipulation)
+        bool                        fDiscardIfZeroCoverage;
 
         // stripped of bits that don't affect program generation
         GrAttribBindings            fAttribBindings;
 
         /** Non-zero if this stage has an effect */
         GrGLEffect::EffectKey       fEffectKeys[GrDrawState::kNumStages];
 
         // To enable experimental geometry shader code (not for use in
         // production)
 #if GR_GL_EXPERIMENTAL_GS
@@ skipping 104 matching lines @@
     Desc                        fDesc;
     const GrGLContext&          fContext;
 
     GrGLUniformManager          fUniformManager;
     UniformHandles              fUniformHandles;
 
     typedef GrRefCnt INHERITED;
 };
 
 #endif