Bundle common arguments to GrGradientEffect creation

src/effects/gradients/SkTwoPointConicalGradient_gpu.cpp

 /*
  * Copyright 2014 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
-#include "SkTwoPointConicalGradient_gpu.h"
 
 #include "SkTwoPointConicalGradient.h"
 
 #if SK_SUPPORT_GPU
 #include "GrCoordTransform.h"
 #include "GrInvariantOutput.h"
 #include "GrPaint.h"
 #include "glsl/GrGLSLFragmentShaderBuilder.h"
 #include "glsl/GrGLSLProgramDataManager.h"
 #include "glsl/GrGLSLUniformHandler.h"
+#include "SkTwoPointConicalGradient_gpu.h"
+
 // For brevity
 typedef GrGLSLProgramDataManager::UniformHandle UniformHandle;
 
 static const SkScalar kErrorTol = 0.00001f;
 static const SkScalar kEdgeErrorTol = 5.f * kErrorTol;
 
 /**
  * We have three general cases for 2pt conical gradients. First we always assume that
  * the start radius <= end radius. Our first case (kInside_) is when the start circle
  * is completely enclosed by the end circle. The second case (kOutside_) is the case
@@ skipping 26 matching lines @@
         rot.setSinCos(-SkScalarMul(invDiffLen, diff.fY),
                        SkScalarMul(invDiffLen, diff.fX));
         invLMatrix->postConcat(rot);
     }
 }
 
 class Edge2PtConicalEffect : public GrGradientEffect {
 public:
     class GLSLEdge2PtConicalProcessor;
 
-    static sk_sp<GrFragmentProcessor> Make(GrContext* ctx,
-                                           const SkTwoPointConicalGradient& shader,
-                                           const SkMatrix& matrix,
-                                           SkShader::TileMode tm) {
-        return sk_sp<GrFragmentProcessor>(new Edge2PtConicalEffect(ctx, shader, matrix, tm));
+    static sk_sp<GrFragmentProcessor> Make(const CreateArgs& args) {
+        return sk_sp<GrFragmentProcessor>(new Edge2PtConicalEffect(args));
     }
 
     virtual ~Edge2PtConicalEffect() {}
 
     const char* name() const override {
         return "Two-Point Conical Gradient Edge Touching";
     }
 
     // The radial gradient parameters can collapse to a linear (instead of quadratic) equation.
     SkScalar center() const { return fCenterX1; }
     SkScalar diffRadius() const { return fDiffRadius; }
     SkScalar radius() const { return fRadius0; }
 
 private:
     GrGLSLFragmentProcessor* onCreateGLSLInstance() const override;
 
     void onGetGLSLProcessorKey(const GrGLSLCaps&, GrProcessorKeyBuilder*) const override;
 
     bool onIsEqual(const GrFragmentProcessor& sBase) const override {
         const Edge2PtConicalEffect& s = sBase.cast<Edge2PtConicalEffect>();
         return (INHERITED::onIsEqual(sBase) &&
                 this->fCenterX1 == s.fCenterX1 &&
                 this->fRadius0 == s.fRadius0 &&
                 this->fDiffRadius == s.fDiffRadius);
     }
 
-    Edge2PtConicalEffect(GrContext* ctx,
-                         const SkTwoPointConicalGradient& shader,
-                         const SkMatrix& matrix,
-                         SkShader::TileMode tm)
-        : INHERITED(ctx, shader, matrix, tm),
-        fCenterX1(shader.getCenterX1()),
-        fRadius0(shader.getStartRadius()),
-        fDiffRadius(shader.getDiffRadius()){
+    Edge2PtConicalEffect(const CreateArgs& args)
+        : INHERITED(args) {
+        const SkTwoPointConicalGradient& shader =
+            *static_cast<const SkTwoPointConicalGradient*>(args.fShader);
+        fCenterX1 = shader.getCenterX1();
+        fRadius0 = shader.getStartRadius();
+        fDiffRadius = shader.getDiffRadius();
         this->initClassID<Edge2PtConicalEffect>();
         // We should only be calling this shader if we are degenerate case with touching circles
         // When deciding if we are in edge case, we scaled by the end radius for cases when the
         // start radius was close to zero, otherwise we scaled by the start radius.  In addition
         // Our test for the edge case in set_matrix_circle_conical has a higher tolerance so we
         // need the sqrt value below
         SkASSERT(SkScalarAbs(SkScalarAbs(fDiffRadius) - fCenterX1) <
                  (fRadius0 < kErrorTol ? shader.getEndRadius() * kEdgeErrorTol :
                                          fRadius0 * sqrt(kEdgeErrorTol)));
 
@@ skipping 255 matching lines @@
 
     return conicalType;
 }
 
 //////////////////////////////////////////////////////////////////////////////
 
 class FocalOutside2PtConicalEffect : public GrGradientEffect {
 public:
     class GLSLFocalOutside2PtConicalProcessor;
 
-    static sk_sp<GrFragmentProcessor> Make(GrContext* ctx,
-                                           const SkTwoPointConicalGradient& shader,
-                                           const SkMatrix& matrix,
-                                           SkShader::TileMode tm,
-                                           SkScalar focalX) {
+    static sk_sp<GrFragmentProcessor> Make(const CreateArgs& args, SkScalar focalX) {
         return sk_sp<GrFragmentProcessor>(
-            new FocalOutside2PtConicalEffect(ctx, shader, matrix, tm, focalX));
+            new FocalOutside2PtConicalEffect(args, focalX));
     }
 
     virtual ~FocalOutside2PtConicalEffect() { }
 
     const char* name() const override {
         return "Two-Point Conical Gradient Focal Outside";
     }
 
     bool isFlipped() const { return fIsFlipped; }
     SkScalar focal() const { return fFocalX; }
 
 private:
     GrGLSLFragmentProcessor* onCreateGLSLInstance() const override;
 
     void onGetGLSLProcessorKey(const GrGLSLCaps&, GrProcessorKeyBuilder*) const override;
 
     bool onIsEqual(const GrFragmentProcessor& sBase) const override {
         const FocalOutside2PtConicalEffect& s = sBase.cast<FocalOutside2PtConicalEffect>();
         return (INHERITED::onIsEqual(sBase) &&
                 this->fFocalX == s.fFocalX &&
                 this->fIsFlipped == s.fIsFlipped);
     }
 
-    FocalOutside2PtConicalEffect(GrContext* ctx,
-                                 const SkTwoPointConicalGradient& shader,
-                                 const SkMatrix& matrix,
-                                 SkShader::TileMode tm,
-                                 SkScalar focalX)
-    : INHERITED(ctx, shader, matrix, tm)
+    FocalOutside2PtConicalEffect(const CreateArgs& args, SkScalar focalX)
+    : INHERITED(args)
     , fFocalX(focalX)
-    , fIsFlipped(shader.isFlippedGrad()) {
+    , fIsFlipped(static_cast<const SkTwoPointConicalGradient*>(args.fShader)->isFlippedGrad()) {
         this->initClassID<FocalOutside2PtConicalEffect>();
     }
 
     GR_DECLARE_FRAGMENT_PROCESSOR_TEST;
 
     SkScalar         fFocalX;
     bool             fIsFlipped;
 
     typedef GrGradientEffect INHERITED;
 };
@@ skipping 157 matching lines @@
     key[0] = GenBaseGradientKey(processor);
     key[1] = processor.cast<FocalOutside2PtConicalEffect>().isFlipped();
 }
 
 //////////////////////////////////////////////////////////////////////////////
 
 class FocalInside2PtConicalEffect : public GrGradientEffect {
 public:
     class GLSLFocalInside2PtConicalProcessor;
 
-    static sk_sp<GrFragmentProcessor> Make(GrContext* ctx,
-                                           const SkTwoPointConicalGradient& shader,
-                                           const SkMatrix& matrix,
-                                           SkShader::TileMode tm,
-                                           SkScalar focalX) {
+    static sk_sp<GrFragmentProcessor> Make(const CreateArgs& args, SkScalar focalX) {
         return sk_sp<GrFragmentProcessor>(
-            new FocalInside2PtConicalEffect(ctx, shader, matrix, tm, focalX));
+            new FocalInside2PtConicalEffect(args, focalX));
     }
 
     virtual ~FocalInside2PtConicalEffect() {}
 
     const char* name() const override {
         return "Two-Point Conical Gradient Focal Inside";
     }
 
     SkScalar focal() const { return fFocalX; }
 
     typedef FocalInside2PtConicalEffect::GLSLFocalInside2PtConicalProcessor GLSLProcessor;
 
 private:
     GrGLSLFragmentProcessor* onCreateGLSLInstance() const override;
 
     void onGetGLSLProcessorKey(const GrGLSLCaps&, GrProcessorKeyBuilder*) const override;
 
     bool onIsEqual(const GrFragmentProcessor& sBase) const override {
         const FocalInside2PtConicalEffect& s = sBase.cast<FocalInside2PtConicalEffect>();
         return (INHERITED::onIsEqual(sBase) &&
                 this->fFocalX == s.fFocalX);
     }
 
-    FocalInside2PtConicalEffect(GrContext* ctx,
-                                const SkTwoPointConicalGradient& shader,
-                                const SkMatrix& matrix,
-                                SkShader::TileMode tm,
-                                SkScalar focalX)
-        : INHERITED(ctx, shader, matrix, tm), fFocalX(focalX) {
+    FocalInside2PtConicalEffect(const CreateArgs& args, SkScalar focalX)
+        : INHERITED(args), fFocalX(focalX) {
         this->initClassID<FocalInside2PtConicalEffect>();
     }
 
     GR_DECLARE_FRAGMENT_PROCESSOR_TEST;
 
     SkScalar         fFocalX;
 
     typedef GrGradientEffect INHERITED;
 };
 
@@ skipping 190 matching lines @@
     if (A < 0.f) {
         return kInside_ConicalType;
     }
     return kOutside_ConicalType;
 }
 
 class CircleInside2PtConicalEffect : public GrGradientEffect {
 public:
     class GLSLCircleInside2PtConicalProcessor;
 
-    static sk_sp<GrFragmentProcessor> Make(GrContext* ctx,
-                                           const SkTwoPointConicalGradient& shader,
-                                           const SkMatrix& matrix,
-                                           SkShader::TileMode tm,
-                                           const CircleConicalInfo& info) {
+    static sk_sp<GrFragmentProcessor> Make(const CreateArgs& args, const CircleConicalInfo& info) {
         return sk_sp<GrFragmentProcessor>(
-            new CircleInside2PtConicalEffect(ctx, shader, matrix, tm, info));
+            new CircleInside2PtConicalEffect(args, info));
     }
 
     virtual ~CircleInside2PtConicalEffect() {}
 
     const char* name() const override { return "Two-Point Conical Gradient Inside"; }
 
     SkScalar centerX() const { return fInfo.fCenterEnd.fX; }
     SkScalar centerY() const { return fInfo.fCenterEnd.fY; }
     SkScalar A() const { return fInfo.fA; }
     SkScalar B() const { return fInfo.fB; }
     SkScalar C() const { return fInfo.fC; }
 
 private:
     GrGLSLFragmentProcessor* onCreateGLSLInstance() const override;
 
     virtual void onGetGLSLProcessorKey(const GrGLSLCaps& caps,
                                        GrProcessorKeyBuilder* b) const override;
 
     bool onIsEqual(const GrFragmentProcessor& sBase) const override {
         const CircleInside2PtConicalEffect& s = sBase.cast<CircleInside2PtConicalEffect>();
         return (INHERITED::onIsEqual(sBase) &&
                 this->fInfo.fCenterEnd == s.fInfo.fCenterEnd &&
                 this->fInfo.fA == s.fInfo.fA &&
                 this->fInfo.fB == s.fInfo.fB &&
                 this->fInfo.fC == s.fInfo.fC);
     }
 
-    CircleInside2PtConicalEffect(GrContext* ctx,
-                                 const SkTwoPointConicalGradient& shader,
-                                 const SkMatrix& matrix,
-                                 SkShader::TileMode tm,
-                                 const CircleConicalInfo& info)
-        : INHERITED(ctx, shader, matrix, tm), fInfo(info) {
+    CircleInside2PtConicalEffect(const CreateArgs& args, const CircleConicalInfo& info)
+        : INHERITED(args), fInfo(info) {
         this->initClassID<CircleInside2PtConicalEffect>();
     }
 
     GR_DECLARE_FRAGMENT_PROCESSOR_TEST;
 
     const CircleConicalInfo fInfo;
 
     typedef GrGradientEffect INHERITED;
 };
 
@@ skipping 163 matching lines @@
                                             const GrGLSLCaps&, GrProcessorKeyBuilder* b) {
     b->add32(GenBaseGradientKey(processor));
 }
 
 //////////////////////////////////////////////////////////////////////////////
 
 class CircleOutside2PtConicalEffect : public GrGradientEffect {
 public:
     class GLSLCircleOutside2PtConicalProcessor;
 
-    static sk_sp<GrFragmentProcessor> Make(GrContext* ctx,
-                                           const SkTwoPointConicalGradient& shader,
-                                           const SkMatrix& matrix,
-                                           SkShader::TileMode tm,
-                                           const CircleConicalInfo& info) {
+    static sk_sp<GrFragmentProcessor> Make(const CreateArgs& args, const CircleConicalInfo& info) {
         return sk_sp<GrFragmentProcessor>(
-            new CircleOutside2PtConicalEffect(ctx, shader, matrix, tm, info));
+            new CircleOutside2PtConicalEffect(args, info));
     }
 
     virtual ~CircleOutside2PtConicalEffect() {}
 
     const char* name() const override { return "Two-Point Conical Gradient Outside"; }
 
     SkScalar centerX() const { return fInfo.fCenterEnd.fX; }
     SkScalar centerY() const { return fInfo.fCenterEnd.fY; }
     SkScalar A() const { return fInfo.fA; }
     SkScalar B() const { return fInfo.fB; }
@@ skipping 10 matching lines @@
         const CircleOutside2PtConicalEffect& s = sBase.cast<CircleOutside2PtConicalEffect>();
         return (INHERITED::onIsEqual(sBase) &&
                 this->fInfo.fCenterEnd == s.fInfo.fCenterEnd &&
                 this->fInfo.fA == s.fInfo.fA &&
                 this->fInfo.fB == s.fInfo.fB &&
                 this->fInfo.fC == s.fInfo.fC &&
                 this->fTLimit == s.fTLimit &&
                 this->fIsFlipped == s.fIsFlipped);
     }
 
-    CircleOutside2PtConicalEffect(GrContext* ctx,
-                                  const SkTwoPointConicalGradient& shader,
-                                  const SkMatrix& matrix,
-                                  SkShader::TileMode tm,
-                                  const CircleConicalInfo& info)
-        : INHERITED(ctx, shader, matrix, tm), fInfo(info) {
+    CircleOutside2PtConicalEffect(const CreateArgs& args, const CircleConicalInfo& info)
+        : INHERITED(args), fInfo(info) {
         this->initClassID<CircleOutside2PtConicalEffect>();
+        const SkTwoPointConicalGradient& shader =
+            *static_cast<const SkTwoPointConicalGradient*>(args.fShader);
         if (shader.getStartRadius() != shader.getEndRadius()) {
             fTLimit = shader.getStartRadius() / (shader.getStartRadius() - shader.getEndRadius());
         } else {
             fTLimit = SK_ScalarMin;
         }
 
         fIsFlipped = shader.isFlippedGrad();
     }
 
     GR_DECLARE_FRAGMENT_PROCESSOR_TEST;
@@ skipping 198 matching lines @@
 void CircleOutside2PtConicalEffect::GLSLCircleOutside2PtConicalProcessor::GenKey(
                                             const GrProcessor& processor,
                                             const GrGLSLCaps&, GrProcessorKeyBuilder* b) {
     uint32_t* key = b->add32n(2);
     key[0] = GenBaseGradientKey(processor);
     key[1] = processor.cast<CircleOutside2PtConicalEffect>().isFlipped();
 }
 
 //////////////////////////////////////////////////////////////////////////////
 
-sk_sp<GrFragmentProcessor> Gr2PtConicalGradientEffect::Make(GrContext* ctx,
-                                                            const SkTwoPointConicalGradient& shader,
-                                                            SkShader::TileMode tm,
-                                                            const SkMatrix* localMatrix) {
+sk_sp<GrFragmentProcessor> Gr2PtConicalGradientEffect::Make(
+                                                         const GrGradientEffect::CreateArgs& args) {
+    const SkTwoPointConicalGradient& shader =
+        *static_cast<const SkTwoPointConicalGradient*>(args.fShader);
+
     SkMatrix matrix;
     if (!shader.getLocalMatrix().invert(&matrix)) {
         return nullptr;
     }
-    if (localMatrix) {
+    if (args.fMatrix) {
         SkMatrix inv;
-        if (!localMatrix->invert(&inv)) {
+        if (!args.fMatrix->invert(&inv)) {
             return nullptr;
         }
         matrix.postConcat(inv);
     }
 
+    GrGradientEffect::CreateArgs newArgs(args.fContext, args.fShader, &matrix, args.fTileMode);
+
     if (shader.getStartRadius() < kErrorTol) {
         SkScalar focalX;
         ConicalType type = set_matrix_focal_conical(shader, &matrix, &focalX);
         if (type == kInside_ConicalType) {
-            return FocalInside2PtConicalEffect::Make(ctx, shader, matrix, tm, focalX);
+            return FocalInside2PtConicalEffect::Make(newArgs, focalX);
         } else if(type == kEdge_ConicalType) {
             set_matrix_edge_conical(shader, &matrix);
-            return Edge2PtConicalEffect::Make(ctx, shader, matrix, tm);
+            return Edge2PtConicalEffect::Make(newArgs);
         } else {
-            return FocalOutside2PtConicalEffect::Make(ctx, shader, matrix, tm, focalX);
+            return FocalOutside2PtConicalEffect::Make(newArgs, focalX);
         }
     }
 
     CircleConicalInfo info;
     ConicalType type = set_matrix_circle_conical(shader, &matrix, &info);
 
     if (type == kInside_ConicalType) {
-        return CircleInside2PtConicalEffect::Make(ctx, shader, matrix, tm, info);
+        return CircleInside2PtConicalEffect::Make(newArgs, info);
     } else if (type == kEdge_ConicalType) {
         set_matrix_edge_conical(shader, &matrix);
-        return Edge2PtConicalEffect::Make(ctx, shader, matrix, tm);
+        return Edge2PtConicalEffect::Make(newArgs);
     } else {
-        return CircleOutside2PtConicalEffect::Make(ctx, shader, matrix, tm, info);
+        return CircleOutside2PtConicalEffect::Make(newArgs, info);
     }
 }
 
 #endif