Add XferProcessor factory in GrPaint and GrDrawState.

include/gpu/GrPaint.h

 
 /*
  * Copyright 2011 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 
 #ifndef GrPaint_DEFINED
 #define GrPaint_DEFINED
 
 #include "GrColor.h"
 #include "GrFragmentStage.h"
+#include "GrXferProcessor.h"
 
 #include "SkXfermode.h"
 
 /**
  * The paint describes how color and coverage are computed at each pixel by GrContext draw
  * functions and the how color is blended with the destination pixel.
  *
  * The paint allows installation of custom color and coverage stages. New types of stages are
  * created by subclassing GrProcessor.
  *
@@ skipping 46 matching lines @@
      */
     void setAntiAlias(bool aa) { fAntiAlias = aa; }
     bool isAntiAlias() const { return fAntiAlias; }
 
     /**
      * Should dithering be applied. Defaults to false.
      */
     void setDither(bool dither) { fDither = dither; }
     bool isDither() const { return fDither; }
 
+    const GrXPFactory* setXPFactory(const GrXPFactory* xpFactory) {
+        fXPFactory.reset(SkRef(xpFactory));
+        return xpFactory;
+    }
+
     /**
      * Appends an additional color processor to the color computation.
      */
     const GrFragmentProcessor* addColorProcessor(const GrFragmentProcessor* fp) {
         SkASSERT(fp);
         SkNEW_APPEND_TO_TARRAY(&fColorStages, GrFragmentStage, (fp));
         return fp;
     }
 
     /**
@@ skipping 11 matching lines @@
      */
     void addColorTextureProcessor(GrTexture*, const SkMatrix&);
     void addCoverageTextureProcessor(GrTexture*, const SkMatrix&);
     void addColorTextureProcessor(GrTexture*, const SkMatrix&, const GrTextureParams&);
     void addCoverageTextureProcessor(GrTexture*, const SkMatrix&, const GrTextureParams&);
 
     int numColorStages() const { return fColorStages.count(); }
     int numCoverageStages() const { return fCoverageStages.count(); }
     int numTotalStages() const { return this->numColorStages() + this->numCoverageStages(); }
 
+    const GrXPFactory* getXPFactory() const { return fXPFactory.get(); }
+
     const GrFragmentStage& getColorStage(int s) const { return fColorStages[s]; }
     const GrFragmentStage& getCoverageStage(int s) const { return fCoverageStages[s]; }
 
     GrPaint& operator=(const GrPaint& paint) {
         fSrcBlendCoeff = paint.fSrcBlendCoeff;
         fDstBlendCoeff = paint.fDstBlendCoeff;
         fAntiAlias = paint.fAntiAlias;
         fDither = paint.fDither;
 
         fColor = paint.fColor;
 
         fColorStages = paint.fColorStages;
         fCoverageStages = paint.fCoverageStages;
 
+        fXPFactory.reset(SkRef(paint.getXPFactory()));
+
         return *this;
     }
 
     /**
      * Resets the paint to the defaults.
      */
     void reset() {
         this->resetBlend();
         this->resetOptions();
         this->resetColor();
@@ skipping 54 matching lines @@
                 computed = true;
             }
             fCoverageStages[i].localCoordChange(oldToNew);
         }
         return true;
     }
 
     friend class GrContext; // To access above two functions
     friend class GrStencilAndCoverTextContext;  // To access above two functions
 
-    SkSTArray<4, GrFragmentStage> fColorStages;
-    SkSTArray<2, GrFragmentStage> fCoverageStages;
+    SkAutoTUnref<const GrXPFactory> fXPFactory;
+    SkSTArray<4, GrFragmentStage>   fColorStages;
+    SkSTArray<2, GrFragmentStage>   fCoverageStages;
 
-    GrBlendCoeff                fSrcBlendCoeff;
-    GrBlendCoeff                fDstBlendCoeff;
-    bool                        fAntiAlias;
-    bool                        fDither;
+    GrBlendCoeff                    fSrcBlendCoeff;
+    GrBlendCoeff                    fDstBlendCoeff;
+    bool                            fAntiAlias;
+    bool                            fDither;
 
-    GrColor                     fColor;
+    GrColor                         fColor;
 
     void resetBlend() {
         fSrcBlendCoeff = kOne_GrBlendCoeff;
         fDstBlendCoeff = kZero_GrBlendCoeff;
     }
 
     void resetOptions() {
         fAntiAlias = false;
         fDither = false;
     }
 
     void resetColor() {
         fColor = GrColorPackRGBA(0xff, 0xff, 0xff, 0xff);
     }
 
-    void resetStages() {
-        fColorStages.reset();
-        fCoverageStages.reset();
-    }
+    void resetStages(); 
 };
 
 #endif