Draft change to start pulling uniform color into GP

src/gpu/GrAAConvexPathRenderer.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 "GrAAConvexPathRenderer.h"
 
@@ skipping 501 matching lines @@
     virtual ~QuadEdgeEffect() {}
 
     virtual const char* name() const SK_OVERRIDE { return "QuadEdge"; }
 
     const GrAttribute* inPosition() const { return fInPosition; }
     const GrAttribute* inQuadEdge() const { return fInQuadEdge; }
 
     class GLProcessor : public GrGLGeometryProcessor {
     public:
         GLProcessor(const GrGeometryProcessor&,
-                    const GrBatchTracker&) {}
+                    const GrBatchTracker&)
+            : fColor(GrColor_ILLEGAL) {}
 
         virtual void emitCode(const EmitArgs& args) SK_OVERRIDE {
             const QuadEdgeEffect& qe = args.fGP.cast<QuadEdgeEffect>();
-            GrGLVertexBuilder* vsBuilder = args.fPB->getVertexShaderBuilder();
+            GrGLGPBuilder* pb = args.fPB;
+            GrGLVertexBuilder* vsBuilder = pb->getVertexShaderBuilder();
 
             GrGLVertToFrag v(kVec4f_GrSLType);
             args.fPB->addVarying("QuadEdge", &v);
             vsBuilder->codeAppendf("%s = %s;", v.vsOut(), qe.inQuadEdge()->fName);
 
+            const BatchTracker& local = args.fBT.cast<BatchTracker>();
+
+            // Setup pass through color
+            this->setupColor(pb, local.fInputColorType, args.fOutputColor, NULL, &fColorUniform);
+
             // setup coord outputs
             vsBuilder->codeAppendf("%s = %s;", vsBuilder->positionCoords(), qe.inPosition()->fName);
             vsBuilder->codeAppendf("%s = %s;", vsBuilder->localCoords(), qe.inPosition()->fName);
 
             // setup position varying
             vsBuilder->codeAppendf("%s = %s * vec3(%s, 1);", vsBuilder->glPosition(),
                                    vsBuilder->uViewM(), qe.inPosition()->fName);
 
             GrGLGPFragmentBuilder* fsBuilder = args.fPB->getFragmentShaderBuilder();
 
@@ skipping 13 matching lines @@
                                    "               2.0*%s.x*duvdy.x - duvdy.y);",
                                    v.fsIn(), v.fsIn());
             fsBuilder->codeAppendf("edgeAlpha = (%s.x*%s.x - %s.y);", v.fsIn(), v.fsIn(),
                                     v.fsIn());
             fsBuilder->codeAppendf("edgeAlpha = "
                                    "clamp(0.5 - edgeAlpha / length(gF), 0.0, 1.0);}");
 
             fsBuilder->codeAppendf("%s = vec4(edgeAlpha);", args.fOutputCoverage);
         }
 
-        static inline void GenKey(const GrGeometryProcessor&,
-                                  const GrBatchTracker&,
+        static inline void GenKey(const GrGeometryProcessor& gp,
+                                  const GrBatchTracker& bt,
                                   const GrGLCaps&,
-                                  GrProcessorKeyBuilder*) {}
+                                  GrProcessorKeyBuilder* b) {
+            const BatchTracker& local = bt.cast<BatchTracker>();
+            b->add32(local.fInputColorType);
+        }
 
-        virtual void setData(const GrGLProgramDataManager&,
-                             const GrGeometryProcessor&,
-                             const GrBatchTracker&) SK_OVERRIDE {}
+        virtual void setData(const GrGLProgramDataManager& pdman,
+                             const GrGeometryProcessor& gp,
+                             const GrBatchTracker& bt) SK_OVERRIDE {
+            const BatchTracker& local = bt.cast<BatchTracker>();
+            if (kUniform_GrGPInput == local.fInputColorType && local.fColor != fColor) {
+                GrGLfloat c[4];
+                GrColorToRGBAFloat(local.fColor, c);
+                pdman.set4fv(fColorUniform, 1, c);
+                fColor = local.fColor;
+            }
+        }
 
     private:
+        GrColor fColor;
+        UniformHandle fColorUniform;
+
         typedef GrGLGeometryProcessor INHERITED;
     };
 
     virtual void getGLProcessorKey(const GrBatchTracker& bt,
                                    const GrGLCaps& caps,
                                    GrProcessorKeyBuilder* b) const SK_OVERRIDE {
         GLProcessor::GenKey(*this, bt, caps, b);
     }
 
     virtual GrGLGeometryProcessor* createGLInstance(const GrBatchTracker& bt) const SK_OVERRIDE {
         return SkNEW_ARGS(GLProcessor, (*this, bt));
     }
 
+    void initBatchTracker(GrBatchTracker* bt, const InitBT& init) const SK_OVERRIDE {
+        BatchTracker* local = bt->cast<BatchTracker>();
+        local->fInputColorType = GetColorInputType(&local->fColor, this->color(), init, false);
+    }
+
+    bool onCanMakeEqual(const GrBatchTracker& m, const GrBatchTracker& t) const SK_OVERRIDE {
+        const BatchTracker& mine = m.cast<BatchTracker>();
+        const BatchTracker& theirs = t.cast<BatchTracker>();
+        return CanCombineOutput(mine.fInputColorType, mine.fColor,
+                                theirs.fInputColorType, theirs.fColor);
+    }
+
 private:
     QuadEdgeEffect(GrColor color) : INHERITED(color) {
         this->initClassID<QuadEdgeEffect>();
         fInPosition = &this->addVertexAttrib(GrAttribute("inPosition", kVec2f_GrVertexAttribType));
         fInQuadEdge = &this->addVertexAttrib(GrAttribute("inQuadEdge", kVec4f_GrVertexAttribType));
     }
 
     virtual bool onIsEqual(const GrGeometryProcessor& other) const SK_OVERRIDE {
         return true;
     }
 
     virtual void onGetInvariantOutputCoverage(GrInitInvariantOutput* out) const SK_OVERRIDE {
         out->setUnknownSingleComponent();
     }
 
+    struct BatchTracker {
+        GrGPInput fInputColorType;
+        GrColor fColor;
+    };
+
     const GrAttribute* fInPosition;
     const GrAttribute* fInQuadEdge;
 
     GR_DECLARE_GEOMETRY_PROCESSOR_TEST;
 
     typedef GrGeometryProcessor INHERITED;
 };
 
 GR_DEFINE_GEOMETRY_PROCESSOR_TEST(QuadEdgeEffect);
 
@@ skipping 100 matching lines @@
                             vOffset,  // start vertex
                             0,        // start index
                             draw.fVertexCnt,
                             draw.fIndexCnt,
                             &devBounds);
         vOffset += draw.fVertexCnt;
     }
 
     return true;
 }