Implement NVPR on GLES

src/gpu/gl/GrGLProgramDataManager.cpp

 /*
  * Copyright 2012 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #include "gl/GrGLShaderBuilder.h"
+#include "gl/GrGLPathRendering.h"
 #include "gl/GrGLProgram.h"
 #include "gl/GrGLUniformHandle.h"
 #include "gl/GrGpuGL.h"
 #include "SkMatrix.h"
 
 #define ASSERT_ARRAY_UPLOAD_IN_BOUNDS(UNI, COUNT) \
          SkASSERT(arrayCount <= uni.fArrayCount || \
                   (1 == arrayCount && GrGLShaderVar::kNonArray == uni.fArrayCount))
 
 GrGLProgramDataManager::GrGLProgramDataManager(GrGpuGL* gpu,
-                                               GrGLProgram*,
+                                               GrGLProgram* program,
                                                const GrGLShaderBuilder& builder)
-    : fGpu(gpu) {
+    : fGpu(gpu)
+    , fProgram(program) {
     int count = builder.getUniformInfos().count();
     fUniforms.push_back_n(count);
     for (int i = 0; i < count; i++) {
         Uniform& uniform = fUniforms[i];
         const GrGLShaderBuilder::UniformInfo& builderUniform = builder.getUniformInfos()[i];
         SkASSERT(GrGLShaderVar::kNonArray == builderUniform.fVariable.getArrayCount() ||
                  builderUniform.fVariable.getArrayCount() > 0);
         SkDEBUGCODE(
             uniform.fArrayCount = builderUniform.fVariable.getArrayCount();
             uniform.fType = builderUniform.fVariable.getType();
         );
         // TODO: Move the Xoom uniform array in both FS and VS bug workaround here.
 
         if (GrGLShaderBuilder::kVertex_Visibility & builderUniform.fVisibility) {
             uniform.fVSLocation = builderUniform.fLocation;
         } else {
             uniform.fVSLocation = kUnusedUniform;
             }
         if (GrGLShaderBuilder::kFragment_Visibility & builderUniform.fVisibility) {
             uniform.fFSLocation = builderUniform.fLocation;
         } else {
             uniform.fFSLocation = kUnusedUniform;
         }
     }
+
+    count = builder.getSeparableVaryingInfos().count();
+    fVaryings.push_back_n(count);
+    for (int i = 0; i < count; i++) {
+        Varying& varying = fVaryings[i];
+        const GrGLShaderBuilder::SeparableVaryingInfo& builderVarying =
+            builder.getSeparableVaryingInfos()[i];
+        SkASSERT(GrGLShaderVar::kNonArray == builderVarying.fVariable.getArrayCount());
+        SkDEBUGCODE(
+            varying.fType = builderVarying.fVariable.getType();
+        );
+        varying.fLocation = builderVarying.fLocation;
+    }
 }
 
 void GrGLProgramDataManager::setSampler(UniformHandle u, GrGLint texUnit) const {
     const Uniform& uni = fUniforms[u.toProgramDataIndex()];
     SkASSERT(uni.fType == kSampler2D_GrSLType);
     SkASSERT(GrGLShaderVar::kNonArray == uni.fArrayCount);
     // FIXME: We still insert a single sampler uniform for every stage. If the shader does not
     // reference the sampler then the compiler may have optimized it out. Uncomment this assert
     // once stages insert their own samplers.
     // SkASSERT(kUnusedUniform != uni.fFSLocation || kUnusedUniform != uni.fVSLocation);
@@ skipping 198 matching lines @@
         matrix.get(SkMatrix::kMPersp0),
         matrix.get(SkMatrix::kMSkewX),
         matrix.get(SkMatrix::kMScaleY),
         matrix.get(SkMatrix::kMPersp1),
         matrix.get(SkMatrix::kMTransX),
         matrix.get(SkMatrix::kMTransY),
         matrix.get(SkMatrix::kMPersp2),
     };
     this->setMatrix3f(u, mt);
 }
+
+void GrGLProgramDataManager::setProgramPathFragmentInputTransform(VaryingHandle i,
+                                                                  unsigned components,
+                                                                  const SkMatrix& matrix) const {
+    const Varying& fragmentInput = fVaryings[i.toProgramDataIndex()];
+
+    GrGLfloat coefficients[3 * 3];
+    SkASSERT(components >= 1 && components <= 3);
+
+    coefficients[0] = SkScalarToFloat(matrix[SkMatrix::kMScaleX]);
+    coefficients[1] = SkScalarToFloat(matrix[SkMatrix::kMSkewX]);
+    coefficients[2] = SkScalarToFloat(matrix[SkMatrix::kMTransX]);
+
+    if (components >= 2) {
+        coefficients[3] = SkScalarToFloat(matrix[SkMatrix::kMSkewY]);
+        coefficients[4] = SkScalarToFloat(matrix[SkMatrix::kMScaleY]);
+        coefficients[5] = SkScalarToFloat(matrix[SkMatrix::kMTransY]);
+    }
+
+    if (components >= 3) {
+        coefficients[6] = SkScalarToFloat(matrix[SkMatrix::kMPersp0]);
+        coefficients[7] = SkScalarToFloat(matrix[SkMatrix::kMPersp1]);
+        coefficients[8] = SkScalarToFloat(matrix[SkMatrix::kMPersp2]);
+    }
+    fGpu->pathRendering()->programPathFragmentInputGen(fProgram->programID(),
+                                                       fragmentInput.fLocation,
+                                                       GR_GL_OBJECT_LINEAR,
+                                                       components,
+                                                       coefficients);
+}