fUsesLocalCoords is updated in the parent when a child proc is registered.

src/gpu/GrProcessor.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 "GrProcessor.h"
 #include "GrContext.h"
 #include "GrCoordTransform.h"
@@ skipping 187 matching lines @@
                                      child->fTextureAccesses.begin());
     }
 
     int index = fChildProcessors.count();
     fChildProcessors.push_back(GrFragmentStage(child));
 
     if (child->willReadFragmentPosition()) {
         this->setWillReadFragmentPosition();
     }
 
+    if (child->usesLocalCoords()) {
+        fUsesLocalCoords = true;
+    }
+
     return index;
 }
 
 bool GrFragmentProcessor::hasSameTransforms(const GrFragmentProcessor& that) const {
     if (this->numTransforms() != that.numTransforms()) {
         return false;
     }
     int count = this->numTransforms();
     for (int i = 0; i < count; ++i) {
         if (this->coordTransform(i) != that.coordTransform(i)) {
@@ skipping 16 matching lines @@
 ///////////////////////////////////////////////////////////////////////////////////////////////////
 
 // GrProcessorDataManager lives in the same pool
 void* GrProcessorDataManager::operator new(size_t size) {
     return MemoryPoolAccessor().pool()->allocate(size);
 }
 
 void GrProcessorDataManager::operator delete(void* target) {
     return MemoryPoolAccessor().pool()->release(target);
 }