Adding 3D lut color filter

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/builders/GrGLProgramBuilder.h"
 #include "gl/GrGLPathRendering.h"
 #include "gl/GrGLProgram.h"
@@ skipping 44 matching lines @@
         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((uni.fType == kSampler2D_GrSLType) ||
+             (uni.fType == kSampler3D_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);
     if (kUnusedUniform != uni.fFSLocation) {
         GR_GL_CALL(fGpu->glInterface(), Uniform1i(uni.fFSLocation, texUnit));
     }
     if (kUnusedUniform != uni.fVSLocation && uni.fVSLocation != uni.fFSLocation) {
         GR_GL_CALL(fGpu->glInterface(), Uniform1i(uni.fVSLocation, texUnit));
@@ skipping 204 matching lines @@
 void GrGLProgramDataManager::setProgramPathFragmentInputTransform(VaryingHandle i,
                                                                   unsigned components,
                                                                   const SkMatrix& matrix) const {
     const Varying& fragmentInput = fVaryings[i.toProgramDataIndex()];
     fGpu->glPathRendering()->setProgramPathFragmentInputTransform(fProgram->programID(),
                                                                   fragmentInput.fLocation,
                                                                   GR_GL_OBJECT_LINEAR,
                                                                   components,
                                                                   matrix);
 }