When ignoring color input don't use vertex attribs on gpu

src/gpu/gl/GrGLProgramDesc.cpp

 /*
  * Copyright 2013 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #include "gl/builders/GrGLProgramBuilder.h"
 #include "GrGLProgramDesc.h"
 #include "GrBackendEffectFactory.h"
@@ skipping 170 matching lines @@
     // other than pass through values from the VS to the FS anyway).
 #if GR_GL_EXPERIMENTAL_GS
 #if 0
     header->fExperimentalGS = gpu->caps().geometryShaderSupport();
 #else
     header->fExperimentalGS = false;
 #endif
 #endif
     bool defaultToUniformInputs = GR_GL_NO_CONSTANT_ATTRIBUTES || gpu->caps()->pathRenderingSupport();
 
-    if (defaultToUniformInputs && !requiresColorAttrib && inputColorIsUsed) {
+    if (!inputColorIsUsed && !skipColor) {
+        header->fColorInput = kAllOnes_ColorInput;
+    } else if (defaultToUniformInputs && !requiresColorAttrib && inputColorIsUsed) {
         header->fColorInput = kUniform_ColorInput;
     } else {
         header->fColorInput = kAttribute_ColorInput;
         header->fRequiresVertexShader = true;
     }
 
     bool covIsSolidWhite = !requiresCoverageAttrib && 0xffffffff == drawState.getCoverageColor();
 
     if ((covIsSolidWhite || !inputCoverageIsUsed) && !skipCoverage) {
-        header->fCoverageInput = kSolidWhite_ColorInput;
+        header->fCoverageInput = kAllOnes_ColorInput;
     } else if (defaultToUniformInputs && !requiresCoverageAttrib && inputCoverageIsUsed) {
         header->fCoverageInput = kUniform_ColorInput;
     } else {
         header->fCoverageInput = kAttribute_ColorInput;
         header->fRequiresVertexShader = true;
     }
 
     if (readsDst) {
         SkASSERT(NULL != dstCopy || gpu->caps()->dstReadInShaderSupport());
         const GrTexture* dstCopyTexture = NULL;
@@ skipping 104 matching lines @@
     *checksum = 0;
     *checksum = SkChecksum::Compute(reinterpret_cast<uint32_t*>(fKey.begin()), keyLength);
 }
 
 GrGLProgramDesc& GrGLProgramDesc::operator= (const GrGLProgramDesc& other) {
     size_t keyLength = other.keyLength();
     fKey.reset(keyLength);
     memcpy(fKey.begin(), other.fKey.begin(), keyLength);
     return *this;
 }