initial changes to add local matrix to primitive processor

src/gpu/GrGeometryProcessor.h

 /*
  * Copyright 2013 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #ifndef GrGeometryProcessor_DEFINED
 #define GrGeometryProcessor_DEFINED
 
@@ skipping 72 matching lines @@
     kIgnored_GrGPInput,
 };
 
 /*
  * GrPrimitiveProcessor defines an interface which all subclasses must implement.  All
  * GrPrimitiveProcessors must proivide seed color and coverage for the Ganesh color / coverage
  * pipelines, and they must provide some notion of equality
  */
 class GrPrimitiveProcessor : public GrProcessor {
 public:
+    // TODO let the PrimProc itself set this in its setData call, this should really live on the
+    // bundle of primitive data
+    const SkMatrix& localMatrix() const { return fLocalMatrix; }
+
     /*
      * This struct allows the optstate to communicate requirements to the GrPrimitiveProcessor.
      */
     struct InitBT {
         bool fColorIgnored;
         bool fCoverageIgnored;
         GrColor fOverrideColor;
+        bool fUsesLocalCoords;
     };
 
     virtual void initBatchTracker(GrBatchTracker*, const InitBT&) const = 0;
 
     virtual bool canMakeEqual(const GrBatchTracker& mine,
                               const GrPrimitiveProcessor& that,
                               const GrBatchTracker& theirs) const = 0;
 
     /*
      * We always call canMakeEqual before makeEqual so there is no need to do any kind of equality
@@ skipping 13 matching lines @@
                                    const GrGLCaps& caps,
                                    GrProcessorKeyBuilder* b) const = 0;
 
 
     /** Returns a new instance of the appropriate *GL* implementation class
         for the given GrProcessor; caller is responsible for deleting
         the object. */
     virtual GrGLGeometryProcessor* createGLInstance(const GrBatchTracker& bt) const = 0;
 
 protected:
+    GrPrimitiveProcessor(const SkMatrix& localMatrix) : fLocalMatrix(localMatrix) {}
+
     /*
      * CanCombineOutput will return true if two draws are 'batchable' from a color perspective.
      * TODO remove this when GPs can upgrade to attribute color
      */
     static bool CanCombineOutput(GrGPInput left, GrColor lColor, GrGPInput right, GrColor rColor) {
         if (left != right) {
             return false;
         }
 
         if (kUniform_GrGPInput == left && lColor != rColor) {
             return false;
         }
 
         return true;
     }
 
+    static bool CanCombineLocalMatrices(const GrPrimitiveProcessor& left,
+                                        bool leftUsesLocalCoords,
+                                        const GrPrimitiveProcessor& right,
+                                        bool rightUsesLocalCoords) {
+        if (leftUsesLocalCoords != rightUsesLocalCoords) {
+            return false;
+        }
+
+        if (leftUsesLocalCoords && !left.localMatrix().cheapEqualTo(right.localMatrix())) {
+            return false;
+        }
+        return true;
+    }
+
 private:
+    SkMatrix fLocalMatrix;
+
     typedef GrProcessor INHERITED;
 };
 
 /**
  * A GrGeometryProcessor is a flexible method for rendering a primitive.  The GrGeometryProcessor
  * has complete control over vertex attributes and uniforms(aside from the render target) but it
  * must obey the same contract as any GrPrimitiveProcessor, specifically it must emit a color and
  * coverage into the fragment shader.  Where this color and coverage come from is completely the
  * responsibility of the GrGeometryProcessor.
  */
 class GrGeometryProcessor : public GrPrimitiveProcessor {
 public:
     // TODO the Hint can be handled in a much more clean way when we have deferred geometry or
     // atleast bundles
-    GrGeometryProcessor(GrColor color, bool opaqueVertexColors = false)
-        : fVertexStride(0)
+    GrGeometryProcessor(GrColor color,
+                        bool opaqueVertexColors = false,
+                        const SkMatrix& localMatrix = SkMatrix::I())
+        : INHERITED(localMatrix)
+        , fVertexStride(0)
         , fColor(color)
         , fOpaqueVertexColors(opaqueVertexColors)
         , fWillUseGeoShader(false)
         , fHasVertexColor(false)
         , fHasLocalCoords(false) {}
 
     /*
      * This is a safeguard to prevent GPs from going beyond platform specific attribute limits.
      * This number can almost certainly be raised if required.
      */
@@ skipping 40 matching lines @@
         if (fHasVertexColor && fOpaqueVertexColors != other.fOpaqueVertexColors) {
             return false;
         }
 
         // TODO this equality test should really be broken up, some of this can live on the batch
         // tracker test and some of this should be in bundles
         if (!this->onIsEqual(other)) {
             return false;
         }
 
-        return this->onCanMakeEqual(mine, theirs);
+        return this->onCanMakeEqual(mine, other, theirs);
     }
 
     
     // TODO we can remove color from the GrGeometryProcessor base class once we have bundles of
     // primitive data
     GrColor color() const { return fColor; }
 
     // TODO this is a total hack until the gp can do deferred geometry
     bool hasVertexColor() const { return fHasVertexColor; }
 
@@ skipping 49 matching lines @@
     void setWillUseGeoShader() { fWillUseGeoShader = true; }
 
     // TODO hack see above
     void setHasVertexColor() { fHasVertexColor = true; }
     void setHasLocalCoords() { fHasLocalCoords = true; }
 
     virtual void onGetInvariantOutputColor(GrInitInvariantOutput*) const {}
     virtual void onGetInvariantOutputCoverage(GrInitInvariantOutput*) const = 0;
 
 private:
-    virtual bool onCanMakeEqual(const GrBatchTracker& mine, const GrBatchTracker& theirs) const = 0;
+    virtual bool onCanMakeEqual(const GrBatchTracker& mine,
+                                const GrGeometryProcessor& that,
+                                const GrBatchTracker& theirs) const = 0;
     // TODO delete this when we have more advanced equality testing via bundles and the BT
     virtual bool onIsEqual(const GrGeometryProcessor&) const = 0;
 
     SkSTArray<kMaxVertexAttribs, GrAttribute, true> fAttribs;
     size_t fVertexStride;
     GrColor fColor;
     bool fOpaqueVertexColors;
     bool fWillUseGeoShader;
     bool fHasVertexColor;
     bool fHasLocalCoords;
 
-    typedef GrProcessor INHERITED;
+    typedef GrPrimitiveProcessor INHERITED;
 };
 
 /*
  * The path equivalent of the GP.  For now this just manages color. In the long term we plan on
  * extending this class to handle all nvpr uniform / varying / program work.
  */
 class GrPathProcessor : public GrPrimitiveProcessor {
 public:
-    static GrPathProcessor* Create(GrColor color) {
-        return SkNEW_ARGS(GrPathProcessor, (color));
+    static GrPathProcessor* Create(GrColor color, const SkMatrix& localMatrix = SkMatrix::I()) {
+        return SkNEW_ARGS(GrPathProcessor, (color, localMatrix));
     }
     
     void initBatchTracker(GrBatchTracker*, const InitBT&) const SK_OVERRIDE;
 
     bool canMakeEqual(const GrBatchTracker& mine,
                       const GrPrimitiveProcessor& that,
                       const GrBatchTracker& theirs) const SK_OVERRIDE;
 
     const char* name() const SK_OVERRIDE { return "PathProcessor"; }
 
     GrColor color() const { return fColor; }
 
     void getInvariantOutputColor(GrInitInvariantOutput* out) const SK_OVERRIDE;
     void getInvariantOutputCoverage(GrInitInvariantOutput* out) const SK_OVERRIDE;
 
     virtual void getGLProcessorKey(const GrBatchTracker& bt,
                                    const GrGLCaps& caps,
                                    GrProcessorKeyBuilder* b) const SK_OVERRIDE;
 
     virtual GrGLGeometryProcessor* createGLInstance(const GrBatchTracker& bt) const SK_OVERRIDE;
 
 private:
-    GrPathProcessor(GrColor color);
+    GrPathProcessor(GrColor color, const SkMatrix& localMatrix);
     GrColor fColor;
 
-    typedef GrProcessor INHERITED;
+    typedef GrPrimitiveProcessor INHERITED;
 };
 #endif