initial changes to add local matrix to primitive processor

include/gpu/GrFragmentProcessor.h

 /*
  * Copyright 2014 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #ifndef GrFragmentProcessor_DEFINED
 #define GrFragmentProcessor_DEFINED
 
 #include "GrProcessor.h"
 
 class GrCoordTransform;
 class GrGLCaps;
 class GrGLFragmentProcessor;
 class GrProcessorKeyBuilder;
 
 /** Provides custom fragment shader code. Fragment processors receive an input color (vec4f) and
     produce an output color. They may reference textures and uniforms. They may use
     GrCoordTransforms to receive a transformation of the local coordinates that map from local space
     to the fragment being processed.
  */
 class GrFragmentProcessor : public GrProcessor {
 public:
     GrFragmentProcessor()
         : INHERITED()
         , fWillReadDstColor(false)
-        , fWillUseInputColor(true) {}
+        , fWillUseInputColor(true)
+        , fUsesLocalCoords(false) {}
 
     /** Implemented using GLFragmentProcessor::GenKey as described in this class's comment. */
     virtual void getGLProcessorKey(const GrGLCaps& caps,
                                    GrProcessorKeyBuilder* b) const = 0;
 
     /** Returns a new instance of the appropriate *GL* implementation class
         for the given GrFragmentProcessor; caller is responsible for deleting
         the object. */
     virtual GrGLFragmentProcessor* createGLInstance() const = 0;
 
     /** Human-meaningful string to identify this GrFragmentProcessor; may be embedded
         in generated shader code. */
     virtual const char* name() const = 0;
 
     int numTransforms() const { return fCoordTransforms.count(); }
 
     /** Returns the coordinate transformation at index. index must be valid according to
         numTransforms(). */
     const GrCoordTransform& coordTransform(int index) const { return *fCoordTransforms[index]; }
 
     /** Will this prceossor read the destination pixel value? */
     bool willReadDstColor() const { return fWillReadDstColor; }
 
     /** Will this prceossor read the source color value? */
     bool willUseInputColor() const { return fWillUseInputColor; }
 
+    /** Do any of the coordtransforms for this processor require local coords? */
+    bool usesLocalCoords() const { return fUsesLocalCoords; }
+
     /** Returns true if this and other processor conservatively draw identically. It can only return
         true when the two processor are of the same subclass (i.e. they return the same object from
         from getFactory()).
 
         A return value of true from isEqual() should not be used to test whether the processor would
         generate the same shader code. To test for identical code generation use getGLProcessorKey*/
     bool isEqual(const GrFragmentProcessor& that) const {
         if (this->classID() != that.classID() ||
             !this->hasSameTransforms(that) ||
             !this->hasSameTextureAccesses(that)) {
@@ skipping 58 matching lines @@
      * getFactory()). The processor subclass should not compare its coord transforms as that will
      * be performed automatically in the non-virtual isEqual().
      */
     virtual bool onIsEqual(const GrFragmentProcessor&) const = 0;
 
     bool hasSameTransforms(const GrFragmentProcessor&) const;
 
     SkSTArray<4, const GrCoordTransform*, true>  fCoordTransforms;
     bool                                         fWillReadDstColor;
     bool                                         fWillUseInputColor;
+    bool                                         fUsesLocalCoords;
 
     typedef GrProcessor INHERITED;
 };
 
 #endif