Add support for transformedLocalCoords to GrDefaultGeoProc

src/gpu/gl/GrGLGeometryProcessor.cpp

 /*
  * Copyright 2014 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #include "GrGLGeometryProcessor.h"
 
 #include "builders/GrGLProgramBuilder.h"
@@ skipping 71 matching lines @@
                 if (kVec2f_GrSLType == varyingType) {
                     vb->codeAppendf("%s = (%s * vec3(%s, 1)).xy;", v.vsOut(), uniName, localCoords);
                 } else {
                     vb->codeAppendf("%s = %s * vec3(%s, 1);", v.vsOut(), uniName, localCoords);
                 }
             }
         }
     }
 }
 
+void GrGLGeometryProcessor::emitTransforms(GrGLGPBuilder* pb,
+                                           const char* localCoords,
+                                           const TransformsIn& tin,
+                                           TransformsOut* tout) {
+    GrGLVertexBuilder* vb = pb->getVertexShaderBuilder();
+    tout->push_back_n(tin.count());
+    for (int i = 0; i < tin.count(); i++) {
+        const ProcCoords& coordTransforms = tin[i];
+        for (int t = 0; t < coordTransforms.count(); t++) {
+            GrSLType varyingType = kVec2f_GrSLType;
+
+            // Device coords aren't supported
+            GrCoordSet coordType = coordTransforms[t]->sourceCoords();
+            SkASSERT(kDevice_GrCoordSet != coordType);
+            GrSLPrecision precision = coordTransforms[t]->precision();
+
+            SkString strVaryingName("MatrixCoord");
+            strVaryingName.appendf("_%i_%i", i, t);
+
+            GrGLVertToFrag v(varyingType);
+            pb->addVarying(strVaryingName.c_str(), &v, precision);
+            vb->codeAppendf("%s = %s;", v.vsOut(), localCoords);
+
+            SkNEW_APPEND_TO_TARRAY(&(*tout)[i],
+                                   GrGLProcessor::TransformedCoords,
+                                   (SkString(v.fsIn()), varyingType));
+        }
+    }
+}
+
 void GrGLGeometryProcessor::setupPosition(GrGLGPBuilder* pb,
                                           GrGPArgs* gpArgs,
                                           const char* posName) {
     GrGLVertexBuilder* vsBuilder = pb->getVertexShaderBuilder();
     gpArgs->fPositionVar.set(kVec2f_GrSLType, "pos2");
     vsBuilder->codeAppendf("vec2 %s = %s;", gpArgs->fPositionVar.c_str(), posName);
 }
 
 void GrGLGeometryProcessor::setupPosition(GrGLGPBuilder* pb,
                                           GrGPArgs* gpArgs,
@@ skipping 14 matching lines @@
             gpArgs->fPositionVar.set(kVec2f_GrSLType, "pos2");
             vsBuilder->codeAppendf("vec2 %s = vec2(%s * vec3(%s, 1));",
                                    gpArgs->fPositionVar.c_str(), viewMatrixName, posName);
         } else {
             gpArgs->fPositionVar.set(kVec3f_GrSLType, "pos3");
             vsBuilder->codeAppendf("vec3 %s = %s * vec3(%s, 1);",
                                    gpArgs->fPositionVar.c_str(), viewMatrixName, posName);
         }
     }
 }