Implement texel buffers

src/gpu/GrFragmentProcessor.cpp

 /*
 * Copyright 2015 Google Inc.
 *
 * Use of this source code is governed by a BSD-style license that can be
 * found in the LICENSE file.
 */
 
 #include "GrFragmentProcessor.h"
 #include "GrCoordTransform.h"
 #include "GrInvariantOutput.h"
 #include "GrProcOptInfo.h"
 #include "glsl/GrGLSLFragmentProcessor.h"
 #include "glsl/GrGLSLFragmentShaderBuilder.h"
 #include "glsl/GrGLSLProgramDataManager.h"
 #include "glsl/GrGLSLUniformHandler.h"
 #include "effects/GrConstColorProcessor.h"
 #include "effects/GrXfermodeFragmentProcessor.h"
 
 GrFragmentProcessor::~GrFragmentProcessor() {
     // If we got here then our ref count must have reached zero, so we will have converted refs
     // to pending executions for all children.
     for (int i = 0; i < fChildProcessors.count(); ++i) {
         fChildProcessors[i]->completedExecution();
     }
 }
 
 bool GrFragmentProcessor::isEqual(const GrFragmentProcessor& that,
                                   bool ignoreCoordTransforms) const {
     if (this->classID() != that.classID() ||
-        !this->hasSameTextureAccesses(that)) {
+        !this->hasSameSamplers(that)) {
         return false;
     }
     if (ignoreCoordTransforms) {
         if (this->numTransforms() != that.numTransforms()) {
             return false;
         }
     } else if (!this->hasSameTransforms(that)) {
         return false;
     }
     if (!this->onIsEqual(that)) {
@@ skipping 21 matching lines @@
 
 void GrFragmentProcessor::addTextureAccess(const GrTextureAccess* textureAccess) {
     // Can't add texture accesses after registering any children since their texture accesses have
     // already been bubbled up into our fTextureAccesses array
     SkASSERT(fChildProcessors.empty());
 
     INHERITED::addTextureAccess(textureAccess);
     fNumTexturesExclChildren++;
 }
 
+void GrFragmentProcessor::addBufferAccess(const GrBufferAccess* bufferAccess) {
+    // Can't add buffer accesses after registering any children since their buffer accesses have
+    // already been bubbled up into our fBufferAccesses array
+    SkASSERT(fChildProcessors.empty());
+
+    INHERITED::addBufferAccess(bufferAccess);
+    fNumBuffersExclChildren++;
+}
+
 void GrFragmentProcessor::addCoordTransform(const GrCoordTransform* transform) {
     // Can't add transforms after registering any children since their transforms have already been
     // bubbled up into our fCoordTransforms array
     SkASSERT(fChildProcessors.empty());
 
     fCoordTransforms.push_back(transform);
     fUsesLocalCoords = fUsesLocalCoords || transform->sourceCoords() == kLocal_GrCoordSet;
     SkDEBUGCODE(transform->setInProcessor();)
     fNumTransformsExclChildren++;
 }
@@ skipping 283 matching lines @@
             cnt -= firstIdx;
         }
     }
 
     if (1 == cnt) {
         return SkRef(series[0]);
     } else {
         return new SeriesFragmentProcessor(series, cnt);
     }
 }