Change SkShader;asFragmentProcessor signature to no longer take skpaint\grcolor*

src/effects/gradients/SkSweepGradient.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 "SkSweepGradient.h"
 
@@ skipping 149 matching lines @@
             toggle = next_dither_toggle16(toggle);
         }
     }
 }
 
 /////////////////////////////////////////////////////////////////////
 
 #if SK_SUPPORT_GPU
 
 #include "SkGr.h"
+#include "effects/GrExtractAlphaFragmentProcessor.h"
 #include "gl/builders/GrGLProgramBuilder.h"
 
 class GrGLSweepGradient : public GrGLGradientEffect {
 public:
 
     GrGLSweepGradient(const GrProcessor&) {}
     virtual ~GrGLSweepGradient() { }
 
     virtual void emitCode(EmitArgs&) override;
 
@@ skipping 39 matching lines @@
 
     GR_DECLARE_FRAGMENT_PROCESSOR_TEST;
 
     typedef GrGradientEffect INHERITED;
 };
 
 /////////////////////////////////////////////////////////////////////
 
 GR_DEFINE_FRAGMENT_PROCESSOR_TEST(GrSweepGradient);
 
-GrFragmentProcessor* GrSweepGradient::TestCreate(GrProcessorTestData* d) {
+const GrFragmentProcessor* GrSweepGradient::TestCreate(GrProcessorTestData* d) {
     SkPoint center = {d->fRandom->nextUScalar1(), d->fRandom->nextUScalar1()};
 
     SkColor colors[kMaxRandomGradientColors];
     SkScalar stopsArray[kMaxRandomGradientColors];
     SkScalar* stops = stopsArray;
     SkShader::TileMode tmIgnored;
     int colorCount = RandomGradientParams(d->fRandom, colors, &stops, &tmIgnored);
     SkAutoTUnref<SkShader> shader(SkGradientShader::CreateSweep(center.fX, center.fY,
                                                                 colors, stops, colorCount));
-    SkPaint paint;
-    GrFragmentProcessor* fp;
-    GrColor paintColor;
-    SkAssertResult(shader->asFragmentProcessor(d->fContext, paint,
-                                               GrTest::TestMatrix(d->fRandom), nullptr,
-                                               &paintColor, d->fProcDataManager, &fp));
+    const GrFragmentProcessor* fp = shader->asFragmentProcessor(d->fContext,
+                                                                GrTest::TestMatrix(d->fRandom),
+                                                                NULL, kNone_SkFilterQuality,
+                                                                d->fProcDataManager);
+    GrAlwaysAssert(fp);
     return fp;
 }
 
 /////////////////////////////////////////////////////////////////////
 
 void GrGLSweepGradient::emitCode(EmitArgs& args) {
     const GrSweepGradient& ge = args.fFp.cast<GrSweepGradient>();
     this->emitUniforms(args.fBuilder, ge);
     SkString coords2D = args.fBuilder->getFragmentShaderBuilder()
                                         ->ensureFSCoords2D(args.fCoords, 0);
     const GrGLContextInfo& ctxInfo = args.fBuilder->ctxInfo();
     SkString t;
     // 0.1591549430918 is 1/(2*pi), used since atan returns values [-pi, pi]
     // On Intel GPU there is an issue where it reads the second arguement to atan "- %s.x" as an int
     // thus must us -1.0 * %s.x to work correctly
     if (kIntel_GrGLVendor != ctxInfo.vendor()){
         t.printf("atan(- %s.y, - %s.x) * 0.1591549430918 + 0.5",
                  coords2D.c_str(), coords2D.c_str());
     } else {
         t.printf("atan(- %s.y, -1.0 * %s.x) * 0.1591549430918 + 0.5",
                  coords2D.c_str(), coords2D.c_str());
     }
     this->emitColor(args.fBuilder, ge, t.c_str(), args.fOutputColor, args.fInputColor,
                     args.fSamplers);
 }
 
 /////////////////////////////////////////////////////////////////////
 
-bool SkSweepGradient::asFragmentProcessor(GrContext* context, const SkPaint& paint,
-                                          const SkMatrix& viewM,
-                                          const SkMatrix* localMatrix, GrColor* paintColor,
-                                          GrProcessorDataManager* procDataManager,
-                                          GrFragmentProcessor** effect)  const {
+const GrFragmentProcessor* SkSweepGradient::asFragmentProcessor(
+                                                    GrContext* context,
+                                                    const SkMatrix& viewM,
+                                                    const SkMatrix* localMatrix,
+                                                    SkFilterQuality,
+                                                    GrProcessorDataManager* procDataManager) const {
 
     SkMatrix matrix;
     if (!this->getLocalMatrix().invert(&matrix)) {
-        return false;
+        return nullptr;
     }
     if (localMatrix) {
         SkMatrix inv;
         if (!localMatrix->invert(&inv)) {
-            return false;
+            return nullptr;
         }
         matrix.postConcat(inv);
     }
     matrix.postConcat(fPtsToUnit);
 
-    *effect = GrSweepGradient::Create(context, procDataManager, *this, matrix);
-    *paintColor = SkColor2GrColorJustAlpha(paint.getColor());
-
-    return true;
-}
-
-#else
-
-bool SkSweepGradient::asFragmentProcessor(GrContext*, const SkPaint&, const SkMatrix&,
-                                          const SkMatrix*, GrColor*, GrProcessorDataManager*,
-                                          GrFragmentProcessor**)  const {
-    SkDEBUGFAIL("Should not call in GPU-less build");
-    return false;
+    SkAutoTUnref<const GrFragmentProcessor> inner(
+        GrSweepGradient::Create(context, procDataManager, *this, matrix));
+    return GrExtractAlphaFragmentProcessor::Create(inner);
 }
 
 #endif
 
 #ifndef SK_IGNORE_TO_STRING
 void SkSweepGradient::toString(SkString* str) const {
     str->append("SkSweepGradient: (");
 
     str->append("center: (");
     str->appendScalar(fCenter.fX);
     str->append(", ");
     str->appendScalar(fCenter.fY);
     str->append(") ");
 
     this->INHERITED::toString(str);
 
     str->append(")");
 }
 #endif