Default geometry processor

src/gpu/effects/GrCustomCoordsTextureEffect.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 "GrCustomCoordsTextureEffect.h"
 #include "gl/builders/GrGLProgramBuilder.h"
 #include "gl/GrGLProcessor.h"
@@ skipping 13 matching lines @@
                 args.fGP.cast<GrCustomCoordsTextureEffect>();
         SkASSERT(1 == customCoordsTextureEffect.getVertexAttribs().count());
 
         GrGLVertToFrag v(kVec2f_GrSLType);
         args.fPB->addVarying("TextureCoords", &v);
 
         GrGLVertexBuilder* vsBuilder = args.fPB->getVertexShaderBuilder();
         const GrShaderVar& inTextureCoords = customCoordsTextureEffect.inTextureCoords();
         vsBuilder->codeAppendf("%s = %s;", v.vsOut(), inTextureCoords.c_str());
 
+        // setup position varying
+        vsBuilder->codeAppendf("%s = %s * vec3(%s, 1);", vsBuilder->glPosition(),
+                               vsBuilder->uViewM(), vsBuilder->inPosition());
+
         GrGLGPFragmentBuilder* fsBuilder = args.fPB->getFragmentShaderBuilder();
         fsBuilder->codeAppendf("%s = ", args.fOutput);
         fsBuilder->appendTextureLookupAndModulate(args.fInput,
                                                   args.fSamplers[0],
                                                   v.fsIn(),
                                                   kVec2f_GrSLType);
         fsBuilder->codeAppend(";");
     }
 
     virtual void setData(const GrGLProgramDataManager&,
@@ skipping 47 matching lines @@
     };
     SkShader::TileMode tileModes[] = {
         kTileModes[random->nextULessThan(SK_ARRAY_COUNT(kTileModes))],
         kTileModes[random->nextULessThan(SK_ARRAY_COUNT(kTileModes))],
     };
     GrTextureParams params(tileModes, random->nextBool() ? GrTextureParams::kBilerp_FilterMode :
                                                            GrTextureParams::kNone_FilterMode);
 
     return GrCustomCoordsTextureEffect::Create(textures[texIdx], params);
 }