Revert of removing equality / compute invariant loops from GrGeometryProcessors

src/gpu/GrOvalRenderer.cpp

 /*
  * Copyright 2013 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #include "GrOvalRenderer.h"
 
 #include "GrBatch.h"
@@ skipping 155 matching lines @@
                                                      const GrGLCaps&) const override {
         return SkNEW_ARGS(GLProcessor, (*this, bt));
     }
 
     void initBatchTracker(GrBatchTracker* bt, const GrPipelineInfo& init) const override {
         BatchTracker* local = bt->cast<BatchTracker>();
         local->fInputColorType = GetColorInputType(&local->fColor, this->color(), init, false);
         local->fUsesLocalCoords = init.fUsesLocalCoords;
     }
 
+    bool onCanMakeEqual(const GrBatchTracker& m,
+                        const GrGeometryProcessor& that,
+                        const GrBatchTracker& t) const override {
+        const BatchTracker& mine = m.cast<BatchTracker>();
+        const BatchTracker& theirs = t.cast<BatchTracker>();
+        return CanCombineLocalMatrices(*this, mine.fUsesLocalCoords,
+                                       that, theirs.fUsesLocalCoords) &&
+               CanCombineOutput(mine.fInputColorType, mine.fColor,
+                                theirs.fInputColorType, theirs.fColor);
+    }
+
 private:
     CircleEdgeEffect(GrColor color, bool stroke, const SkMatrix& localMatrix)
         : INHERITED(color, SkMatrix::I(), localMatrix) {
         this->initClassID<CircleEdgeEffect>();
         fInPosition = &this->addVertexAttrib(Attribute("inPosition", kVec2f_GrVertexAttribType));
         fInCircleEdge = &this->addVertexAttrib(Attribute("inCircleEdge",
                                                            kVec4f_GrVertexAttribType));
         fStroke = stroke;
     }
 
+    bool onIsEqual(const GrGeometryProcessor& other) const override {
+        const CircleEdgeEffect& cee = other.cast<CircleEdgeEffect>();
+        return cee.fStroke == fStroke;
+    }
+
+    void onGetInvariantOutputCoverage(GrInitInvariantOutput* out) const override {
+        out->setUnknownSingleComponent();
+    }
+
     struct BatchTracker {
         GrGPInput fInputColorType;
         GrColor fColor;
         bool fUsesLocalCoords;
     };
 
     const Attribute* fInPosition;
     const Attribute* fInCircleEdge;
     bool fStroke;
 
@@ skipping 145 matching lines @@
                                                      const GrGLCaps&) const override {
         return SkNEW_ARGS(GLProcessor, (*this, bt));
     }
 
     void initBatchTracker(GrBatchTracker* bt, const GrPipelineInfo& init) const override {
         BatchTracker* local = bt->cast<BatchTracker>();
         local->fInputColorType = GetColorInputType(&local->fColor, this->color(), init, false);
         local->fUsesLocalCoords = init.fUsesLocalCoords;
     }
 
+    bool onCanMakeEqual(const GrBatchTracker& m,
+                        const GrGeometryProcessor& that,
+                        const GrBatchTracker& t) const override {
+        const BatchTracker& mine = m.cast<BatchTracker>();
+        const BatchTracker& theirs = t.cast<BatchTracker>();
+        return CanCombineLocalMatrices(*this, mine.fUsesLocalCoords,
+                                       that, theirs.fUsesLocalCoords) &&
+               CanCombineOutput(mine.fInputColorType, mine.fColor,
+                                theirs.fInputColorType, theirs.fColor);
+    }
+
 private:
     EllipseEdgeEffect(GrColor color, bool stroke, const SkMatrix& localMatrix)
         : INHERITED(color, SkMatrix::I(), localMatrix) {
         this->initClassID<EllipseEdgeEffect>();
         fInPosition = &this->addVertexAttrib(Attribute("inPosition", kVec2f_GrVertexAttribType));
         fInEllipseOffset = &this->addVertexAttrib(Attribute("inEllipseOffset",
                                                               kVec2f_GrVertexAttribType));
         fInEllipseRadii = &this->addVertexAttrib(Attribute("inEllipseRadii",
                                                              kVec4f_GrVertexAttribType));
         fStroke = stroke;
     }
 
+    bool onIsEqual(const GrGeometryProcessor& other) const override {
+        const EllipseEdgeEffect& eee = other.cast<EllipseEdgeEffect>();
+        return eee.fStroke == fStroke;
+    }
+
+    void onGetInvariantOutputCoverage(GrInitInvariantOutput* out) const override {
+        out->setUnknownSingleComponent();
+    }
+
     struct BatchTracker {
         GrGPInput fInputColorType;
         GrColor fColor;
         bool fUsesLocalCoords;
     };
 
     const Attribute* fInPosition;
     const Attribute* fInEllipseOffset;
     const Attribute* fInEllipseRadii;
     bool fStroke;
@@ skipping 163 matching lines @@
                                                      const GrGLCaps&) const override {
         return SkNEW_ARGS(GLProcessor, (*this, bt));
     }
 
     void initBatchTracker(GrBatchTracker* bt, const GrPipelineInfo& init) const override {
         BatchTracker* local = bt->cast<BatchTracker>();
         local->fInputColorType = GetColorInputType(&local->fColor, this->color(), init, false);
         local->fUsesLocalCoords = init.fUsesLocalCoords;
     }
 
+    bool onCanMakeEqual(const GrBatchTracker& m,
+                        const GrGeometryProcessor& that,
+                        const GrBatchTracker& t) const override {
+        const BatchTracker& mine = m.cast<BatchTracker>();
+        const BatchTracker& theirs = t.cast<BatchTracker>();
+        return CanCombineLocalMatrices(*this, mine.fUsesLocalCoords,
+                                       that, theirs.fUsesLocalCoords) &&
+               CanCombineOutput(mine.fInputColorType, mine.fColor,
+                                theirs.fInputColorType, theirs.fColor);
+    }
+
 private:
     DIEllipseEdgeEffect(GrColor color, const SkMatrix& viewMatrix, Mode mode)
         : INHERITED(color, viewMatrix) {
         this->initClassID<DIEllipseEdgeEffect>();
         fInPosition = &this->addVertexAttrib(Attribute("inPosition", kVec2f_GrVertexAttribType));
         fInEllipseOffsets0 = &this->addVertexAttrib(Attribute("inEllipseOffsets0",
                                                                 kVec2f_GrVertexAttribType));
         fInEllipseOffsets1 = &this->addVertexAttrib(Attribute("inEllipseOffsets1",
                                                                 kVec2f_GrVertexAttribType));
         fMode = mode;
     }
 
+    bool onIsEqual(const GrGeometryProcessor& other) const override {
+        const DIEllipseEdgeEffect& eee = other.cast<DIEllipseEdgeEffect>();
+        return eee.fMode == fMode;
+    }
+
+    void onGetInvariantOutputCoverage(GrInitInvariantOutput* out) const override {
+        out->setUnknownSingleComponent();
+    }
+
     struct BatchTracker {
         GrGPInput fInputColorType;
         GrColor fColor;
         bool fUsesLocalCoords;
     };
 
     const Attribute* fInPosition;
     const Attribute* fInEllipseOffsets0;
     const Attribute* fInEllipseOffsets1;
     Mode fMode;
@@ skipping 1594 matching lines @@
         geometry.fInnerXRadius = innerXRadius;
         geometry.fInnerYRadius = innerYRadius;
         geometry.fStroke = isStrokeOnly;
         geometry.fDevBounds = bounds;
 
         SkAutoTUnref<GrBatch> batch(RRectEllipseRendererBatch::Create(geometry, indexBuffer));
         target->drawBatch(pipelineBuilder, batch, &bounds);
     }
     return true;
 }