Allow LCD text to batch across colorchanges. This will always use

src/gpu/effects/GrBitmapTextGeoProc.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 "GrBitmapTextGeoProc.h"
 #include "GrInvariantOutput.h"
 #include "GrTexture.h"
@@ skipping 126 matching lines @@
                                          const SkMatrix& localMatrix, bool usesLocalCoords)
     : fColor(color)
     , fLocalMatrix(localMatrix)
     , fUsesLocalCoords(usesLocalCoords)
     , fTextureAccess(texture, params)
     , fInColor(nullptr)
     , fMaskFormat(format) {
     this->initClassID<GrBitmapTextGeoProc>();
     fInPosition = &this->addVertexAttrib(Attribute("inPosition", kVec2f_GrVertexAttribType));
 
     // TODO we could think about removing this attribute if color is ignored, but unfortunately

[bsalomon, 2015/12/08 16:27:13]

Are we really every going to do this? Seems like we're going the other way.
Color ignored seems like a case we wouldn't optimize for.

[joshualitt, 2015/12/08 17:04:37]

Given infinite time and infinite resources...okay I remove the todo

     // we don't do text positioning in batch, so we can't quite do that yet.
-    bool hasVertexColor = kA8_GrMaskFormat == fMaskFormat;
+    bool hasVertexColor = kA8_GrMaskFormat == fMaskFormat ||
+                          kA565_GrMaskFormat == fMaskFormat;
     if (hasVertexColor) {
         fInColor = &this->addVertexAttrib(Attribute("inColor", kVec4ub_GrVertexAttribType));
     }
     fInTextureCoords = &this->addVertexAttrib(Attribute("inTextureCoords",
                                                         kVec2s_GrVertexAttribType));
     this->addTextureAccess(&fTextureAccess);
 }
 
 void GrBitmapTextGeoProc::getGLSLProcessorKey(const GrGLSLCaps& caps,
                                               GrProcessorKeyBuilder* b) const {
@@ skipping 33 matching lines @@
             break;
         case 2:
             format = kARGB_GrMaskFormat;
             break;
     }
 
     return GrBitmapTextGeoProc::Create(GrRandomColor(d->fRandom), d->fTextures[texIdx], params,
                                        format, GrTest::TestMatrix(d->fRandom),
                                        d->fRandom->nextBool());
 }