Default geometry processor

src/gpu/effects/GrDistanceFieldTextureEffect.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 "GrDistanceFieldTextureEffect.h"
 #include "gl/builders/GrGLProgramBuilder.h"
 #include "gl/GrGLProcessor.h"
@@ skipping 27 matching lines @@
         GrGLGPFragmentBuilder* fsBuilder = args.fPB->getFragmentShaderBuilder();
         SkAssertResult(fsBuilder->enableFeature(
                 GrGLFragmentShaderBuilder::kStandardDerivatives_GLSLFeature));
 
         GrGLVertToFrag v(kVec2f_GrSLType);
         args.fPB->addVarying("TextureCoords", &v);
 
         GrGLVertexBuilder* vsBuilder = args.fPB->getVertexShaderBuilder();
         vsBuilder->codeAppendf("\t%s = %s;\n", v.vsOut(), dfTexEffect.inTextureCoords().c_str());
 
+        // setup position varying
+        vsBuilder->codeAppendf("%s = %s * vec3(%s, 1);", vsBuilder->glPosition(),
+                               vsBuilder->uViewM(), vsBuilder->inPosition());
+
         const char* textureSizeUniName = NULL;
         fTextureSizeUni = args.fPB->addUniform(GrGLProgramBuilder::kFragment_Visibility,
                                                kVec2f_GrSLType, "TextureSize",
                                                &textureSizeUniName);
 
         fsBuilder->codeAppend("\tvec4 texColor = ");
         fsBuilder->appendTextureLookup(args.fSamplers[0],
                                        v.fsIn(),
                                        kVec2f_GrSLType);
         fsBuilder->codeAppend(";\n");
@@ skipping 191 matching lines @@
         GrGLGPFragmentBuilder* fsBuilder = args.fPB->getFragmentShaderBuilder();
         SkAssertResult(fsBuilder->enableFeature(
                                      GrGLFragmentShaderBuilder::kStandardDerivatives_GLSLFeature));
 
         GrGLVertToFrag v(kVec2f_GrSLType);
         args.fPB->addVarying("TextureCoords", &v);
 
         GrGLVertexBuilder* vsBuilder = args.fPB->getVertexShaderBuilder();
         vsBuilder->codeAppendf("%s = %s;", v.vsOut(), dfTexEffect.inTextureCoords().c_str());
 
+        // setup position varying
+        vsBuilder->codeAppendf("%s = %s * vec3(%s, 1);", vsBuilder->glPosition(),
+                               vsBuilder->uViewM(), vsBuilder->inPosition());
+
         const char* textureSizeUniName = NULL;
         fTextureSizeUni = args.fPB->addUniform(GrGLProgramBuilder::kFragment_Visibility,
                                               kVec2f_GrSLType, "TextureSize",
                                               &textureSizeUniName);
 
         fsBuilder->codeAppend("vec4 texColor = ");
         fsBuilder->appendTextureLookup(args.fSamplers[0],
                                        v.fsIn(),
                                        kVec2f_GrSLType);
         fsBuilder->codeAppend(";");
@@ skipping 134 matching lines @@
         const GrDistanceFieldLCDTextureEffect& dfTexEffect =
                 args.fGP.cast<GrDistanceFieldLCDTextureEffect>();
         SkASSERT(1 == dfTexEffect.getVertexAttribs().count());
 
         GrGLVertToFrag v(kVec2f_GrSLType);
         args.fPB->addVarying("TextureCoords", &v);
 
         GrGLVertexBuilder* vsBuilder = args.fPB->getVertexShaderBuilder();
         vsBuilder->codeAppendf("\t%s = %s;\n", v.vsOut(), dfTexEffect.inTextureCoords().c_str());
 
+        // setup position varying
+        vsBuilder->codeAppendf("%s = %s * vec3(%s, 1);", vsBuilder->glPosition(),
+                               vsBuilder->uViewM(), vsBuilder->inPosition());
+
         const char* textureSizeUniName = NULL;
         // width, height, 1/(3*width)
         fTextureSizeUni = args.fPB->addUniform(GrGLProgramBuilder::kFragment_Visibility,
                                               kVec3f_GrSLType, "TextureSize",
                                               &textureSizeUniName);
 
         GrGLGPFragmentBuilder* fsBuilder = args.fPB->getFragmentShaderBuilder();
 
         SkAssertResult(fsBuilder->enableFeature(
                 GrGLFragmentShaderBuilder::kStandardDerivatives_GLSLFeature));
@@ skipping 209 matching lines @@
                                         random->nextULessThan(256),
                                         random->nextULessThan(256));
     uint32_t flags = kUseLCD_DistanceFieldEffectFlag;
     flags |= random->nextBool() ? kUniformScale_DistanceFieldEffectMask : 0;
     flags |= random->nextBool() ? kBGR_DistanceFieldEffectFlag : 0;
     return GrDistanceFieldLCDTextureEffect::Create(textures[texIdx], params,
                                                    textures[texIdx2], params2,
                                                    textColor,
                                                    flags);
 }