GP Emit Code takes a struct

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 "gl/builders/GrGLProgramBuilder.h"
@@ skipping 74 matching lines @@
 
     static const char* Name() { return "CircleEdge"; }
 
     inline bool isStroked() const { return fStroke; }
 
     class GLProcessor : public GrGLGeometryProcessor {
     public:
         GLProcessor(const GrBackendProcessorFactory& factory, const GrProcessor&)
         : INHERITED (factory) {}
 
-        virtual void emitCode(GrGLGPBuilder* builder,
-                              const GrGeometryProcessor& geometryProcessor,
-                              const GrProcessorKey& key,
-                              const char* outputColor,
-                              const char* inputColor,
-                              const TransformedCoordsArray&,
-                              const TextureSamplerArray& samplers) SK_OVERRIDE {
-            const CircleEdgeEffect& circleEffect = geometryProcessor.cast<CircleEdgeEffect>();
+        virtual void emitCode(const EmitArgs& args) SK_OVERRIDE {
+            const CircleEdgeEffect& circleEffect = args.fGP.cast<CircleEdgeEffect>();
             const char *vsName, *fsName;
-            builder->addVarying(kVec4f_GrSLType, "CircleEdge", &vsName, &fsName);
+            args.fPB->addVarying(kVec4f_GrSLType, "CircleEdge", &vsName, &fsName);
 
-            GrGLVertexBuilder* vsBuilder = builder->getVertexShaderBuilder();;
+            GrGLVertexBuilder* vsBuilder = args.fPB->getVertexShaderBuilder();;
             vsBuilder->codeAppendf("\t%s = %s;\n", vsName, circleEffect.inCircleEdge().c_str());
 
-            GrGLGPFragmentBuilder* fsBuilder = builder->getFragmentShaderBuilder();
+            GrGLGPFragmentBuilder* fsBuilder = args.fPB->getFragmentShaderBuilder();
             fsBuilder->codeAppendf("\tfloat d = length(%s.xy);\n", fsName);
             fsBuilder->codeAppendf("\tfloat edgeAlpha = clamp(%s.z - d, 0.0, 1.0);\n", fsName);
             if (circleEffect.isStroked()) {
                 fsBuilder->codeAppendf("\tfloat innerAlpha = clamp(d - %s.w, 0.0, 1.0);\n", fsName);
                 fsBuilder->codeAppend("\tedgeAlpha *= innerAlpha;\n");
             }
 
-            fsBuilder->codeAppendf("\t%s = %s;\n", outputColor,
-                                   (GrGLSLExpr4(inputColor) * GrGLSLExpr1("edgeAlpha")).c_str());
+            fsBuilder->codeAppendf("\t%s = %s;\n", args.fOutput,
+                                   (GrGLSLExpr4(args.fInput) * GrGLSLExpr1("edgeAlpha")).c_str());
         }
 
         static void GenKey(const GrProcessor& processor, const GrGLCaps&,
                            GrProcessorKeyBuilder* b) {
             const CircleEdgeEffect& circleEffect = processor.cast<CircleEdgeEffect>();
             b->add32(circleEffect.isStroked());
         }
 
         virtual void setData(const GrGLProgramDataManager&, const GrProcessor&) SK_OVERRIDE {}
 
@@ skipping 73 matching lines @@
     const GrShaderVar& inEllipseOffset() const { return fInEllipseOffset; }
     const GrShaderVar& inEllipseRadii() const { return fInEllipseRadii; }
 
     inline bool isStroked() const { return fStroke; }
 
     class GLProcessor : public GrGLGeometryProcessor {
     public:
         GLProcessor(const GrBackendProcessorFactory& factory, const GrProcessor&)
         : INHERITED (factory) {}
 
-        virtual void emitCode(GrGLGPBuilder* builder,
-                              const GrGeometryProcessor& geometryProcessor,
-                              const GrProcessorKey& key,
-                              const char* outputColor,
-                              const char* inputColor,
-                              const TransformedCoordsArray&,
-                              const TextureSamplerArray& samplers) SK_OVERRIDE {
-            const EllipseEdgeEffect& ellipseEffect = geometryProcessor.cast<EllipseEdgeEffect>();
+        virtual void emitCode(const EmitArgs& args) SK_OVERRIDE {
+            const EllipseEdgeEffect& ellipseEffect = args.fGP.cast<EllipseEdgeEffect>();
 
             const char *vsOffsetName, *fsOffsetName;
             const char *vsRadiiName, *fsRadiiName;
 
-            builder->addVarying(kVec2f_GrSLType, "EllipseOffsets", &vsOffsetName, &fsOffsetName);
+            args.fPB->addVarying(kVec2f_GrSLType, "EllipseOffsets", &vsOffsetName, &fsOffsetName);
 
-            GrGLVertexBuilder* vsBuilder = builder->getVertexShaderBuilder();
+            GrGLVertexBuilder* vsBuilder = args.fPB->getVertexShaderBuilder();
             vsBuilder->codeAppendf("%s = %s;", vsOffsetName,
                                    ellipseEffect.inEllipseOffset().c_str());
 
-            builder->addVarying(kVec4f_GrSLType, "EllipseRadii", &vsRadiiName, &fsRadiiName);
+            args.fPB->addVarying(kVec4f_GrSLType, "EllipseRadii", &vsRadiiName, &fsRadiiName);
             vsBuilder->codeAppendf("%s = %s;", vsRadiiName, ellipseEffect.inEllipseRadii().c_str());
 
             // for outer curve
-            GrGLGPFragmentBuilder* fsBuilder = builder->getFragmentShaderBuilder();
+            GrGLGPFragmentBuilder* fsBuilder = args.fPB->getFragmentShaderBuilder();
             fsBuilder->codeAppendf("\tvec2 scaledOffset = %s*%s.xy;\n", fsOffsetName, fsRadiiName);
             fsBuilder->codeAppend("\tfloat test = dot(scaledOffset, scaledOffset) - 1.0;\n");
             fsBuilder->codeAppendf("\tvec2 grad = 2.0*scaledOffset*%s.xy;\n", fsRadiiName);
             fsBuilder->codeAppend("\tfloat grad_dot = dot(grad, grad);\n");
             // avoid calling inversesqrt on zero.
             fsBuilder->codeAppend("\tgrad_dot = max(grad_dot, 1.0e-4);\n");
             fsBuilder->codeAppend("\tfloat invlen = inversesqrt(grad_dot);\n");
             fsBuilder->codeAppend("\tfloat edgeAlpha = clamp(0.5-test*invlen, 0.0, 1.0);\n");
 
             // for inner curve
             if (ellipseEffect.isStroked()) {
                 fsBuilder->codeAppendf("\tscaledOffset = %s*%s.zw;\n", fsOffsetName, fsRadiiName);
                 fsBuilder->codeAppend("\ttest = dot(scaledOffset, scaledOffset) - 1.0;\n");
                 fsBuilder->codeAppendf("\tgrad = 2.0*scaledOffset*%s.zw;\n", fsRadiiName);
                 fsBuilder->codeAppend("\tinvlen = inversesqrt(dot(grad, grad));\n");
                 fsBuilder->codeAppend("\tedgeAlpha *= clamp(0.5+test*invlen, 0.0, 1.0);\n");
             }
 
-            fsBuilder->codeAppendf("\t%s = %s;\n", outputColor,
-                                   (GrGLSLExpr4(inputColor) * GrGLSLExpr1("edgeAlpha")).c_str());
+            fsBuilder->codeAppendf("\t%s = %s;\n", args.fOutput,
+                                   (GrGLSLExpr4(args.fInput) * GrGLSLExpr1("edgeAlpha")).c_str());
         }
 
         static void GenKey(const GrProcessor& processor, const GrGLCaps&,
                            GrProcessorKeyBuilder* b) {
             const EllipseEdgeEffect& ellipseEffect = processor.cast<EllipseEdgeEffect>();
             b->add32(ellipseEffect.isStroked());
         }
 
         virtual void setData(const GrGLProgramDataManager&, const GrProcessor&) SK_OVERRIDE {
         }
@@ skipping 85 matching lines @@
     const GrShaderVar& inEllipseOffsets0() const { return fInEllipseOffsets0; }
     const GrShaderVar& inEllipseOffsets1() const { return fInEllipseOffsets1; }
 
     inline Mode getMode() const { return fMode; }
 
     class GLProcessor : public GrGLGeometryProcessor {
     public:
         GLProcessor(const GrBackendProcessorFactory& factory, const GrProcessor&)
         : INHERITED (factory) {}
 
-        virtual void emitCode(GrGLGPBuilder* builder,
-                              const GrGeometryProcessor& geometryProcessor,
-                              const GrProcessorKey& key,
-                              const char* outputColor,
-                              const char* inputColor,
-                              const TransformedCoordsArray&,
-                              const TextureSamplerArray& samplers) SK_OVERRIDE {
-            const DIEllipseEdgeEffect& ellipseEffect =
-                    geometryProcessor.cast<DIEllipseEdgeEffect>();
+        virtual void emitCode(const EmitArgs& args) SK_OVERRIDE {
+            const DIEllipseEdgeEffect& ellipseEffect = args.fGP.cast<DIEllipseEdgeEffect>();
 
             const char *vsOffsetName0, *fsOffsetName0;
-            builder->addVarying(kVec2f_GrSLType, "EllipseOffsets0",
+            args.fPB->addVarying(kVec2f_GrSLType, "EllipseOffsets0",
                                       &vsOffsetName0, &fsOffsetName0);
 
-            GrGLVertexBuilder* vsBuilder = builder->getVertexShaderBuilder();
+            GrGLVertexBuilder* vsBuilder = args.fPB->getVertexShaderBuilder();
             vsBuilder->codeAppendf("%s = %s;", vsOffsetName0,
                                    ellipseEffect.inEllipseOffsets0().c_str());
             const char *vsOffsetName1, *fsOffsetName1;
-            builder->addVarying(kVec2f_GrSLType, "EllipseOffsets1",
+            args.fPB->addVarying(kVec2f_GrSLType, "EllipseOffsets1",
                                       &vsOffsetName1, &fsOffsetName1);
             vsBuilder->codeAppendf("\t%s = %s;\n", vsOffsetName1,
                                    ellipseEffect.inEllipseOffsets1().c_str());
 
-            GrGLGPFragmentBuilder* fsBuilder = builder->getFragmentShaderBuilder();
+            GrGLGPFragmentBuilder* fsBuilder = args.fPB->getFragmentShaderBuilder();
             SkAssertResult(fsBuilder->enableFeature(
                     GrGLFragmentShaderBuilder::kStandardDerivatives_GLSLFeature));
             // for outer curve
             fsBuilder->codeAppendf("\tvec2 scaledOffset = %s.xy;\n", fsOffsetName0);
             fsBuilder->codeAppend("\tfloat test = dot(scaledOffset, scaledOffset) - 1.0;\n");
             fsBuilder->codeAppendf("\tvec2 duvdx = dFdx(%s);\n", fsOffsetName0);
             fsBuilder->codeAppendf("\tvec2 duvdy = dFdy(%s);\n", fsOffsetName0);
             fsBuilder->codeAppendf("\tvec2 grad = vec2(2.0*%s.x*duvdx.x + 2.0*%s.y*duvdx.y,\n"
                                    "\t                 2.0*%s.x*duvdy.x + 2.0*%s.y*duvdy.y);\n",
                                    fsOffsetName0, fsOffsetName0, fsOffsetName0, fsOffsetName0);
@@ skipping 16 matching lines @@
                 fsBuilder->codeAppend("\ttest = dot(scaledOffset, scaledOffset) - 1.0;\n");
                 fsBuilder->codeAppendf("\tduvdx = dFdx(%s);\n", fsOffsetName1);
                 fsBuilder->codeAppendf("\tduvdy = dFdy(%s);\n", fsOffsetName1);
                 fsBuilder->codeAppendf("\tgrad = vec2(2.0*%s.x*duvdx.x + 2.0*%s.y*duvdx.y,\n"
                                        "\t            2.0*%s.x*duvdy.x + 2.0*%s.y*duvdy.y);\n",
                                        fsOffsetName1, fsOffsetName1, fsOffsetName1, fsOffsetName1);
                 fsBuilder->codeAppend("\tinvlen = inversesqrt(dot(grad, grad));\n");
                 fsBuilder->codeAppend("\tedgeAlpha *= clamp(0.5+test*invlen, 0.0, 1.0);\n");
             }
 
-            fsBuilder->codeAppendf("\t%s = %s;\n", outputColor,
-                                   (GrGLSLExpr4(inputColor) * GrGLSLExpr1("edgeAlpha")).c_str());
+            fsBuilder->codeAppendf("\t%s = %s;\n", args.fOutput,
+                                   (GrGLSLExpr4(args.fInput) * GrGLSLExpr1("edgeAlpha")).c_str());
         }
 
         static void GenKey(const GrProcessor& processor, const GrGLCaps&,
                            GrProcessorKeyBuilder* b) {
             const DIEllipseEdgeEffect& ellipseEffect = processor.cast<DIEllipseEdgeEffect>();
 
             b->add32(ellipseEffect.getMode());
         }
 
         virtual void setData(const GrGLProgramDataManager&, const GrProcessor&) SK_OVERRIDE {
@@ skipping 802 matching lines @@
 
         // drop out the middle quad if we're stroked
         int indexCnt = isStrokeOnly ? SK_ARRAY_COUNT(gRRectIndices) - 6 :
                                       SK_ARRAY_COUNT(gRRectIndices);
         target->setIndexSourceToBuffer(indexBuffer);
         target->drawIndexed(kTriangles_GrPrimitiveType, 0, 0, 16, indexCnt, &bounds);
     }
 
     return true;
 }