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

src/effects/gradients/SkLinearGradient.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 "SkLinearGradient.h"
 
 static inline int repeat_bits(int x, const int bits) {
@@ skipping 421 matching lines @@
             *dstC++ = cache[toggle + index];
             toggle = next_dither_toggle16(toggle);
 
             dstX += SK_Scalar1;
         } while (--count != 0);
     }
 }
 
 #if SK_SUPPORT_GPU
 
+#include "effects/GrExtractAlphaFragmentProcessor.h"
 #include "gl/builders/GrGLProgramBuilder.h"
 #include "SkGr.h"
 
 /////////////////////////////////////////////////////////////////////
 
 class GrGLLinearGradient : public GrGLGradientEffect {
 public:
 
     GrGLLinearGradient(const GrProcessor&) {}
 
@@ skipping 48 matching lines @@
 
     GR_DECLARE_FRAGMENT_PROCESSOR_TEST;
 
     typedef GrGradientEffect INHERITED;
 };
 
 /////////////////////////////////////////////////////////////////////
 
 GR_DEFINE_FRAGMENT_PROCESSOR_TEST(GrLinearGradient);
 
-GrFragmentProcessor* GrLinearGradient::TestCreate(GrProcessorTestData* d) {
+const GrFragmentProcessor* GrLinearGradient::TestCreate(GrProcessorTestData* d) {
     SkPoint points[] = {{d->fRandom->nextUScalar1(), d->fRandom->nextUScalar1()},
                         {d->fRandom->nextUScalar1(), d->fRandom->nextUScalar1()}};
 
     SkColor colors[kMaxRandomGradientColors];
     SkScalar stopsArray[kMaxRandomGradientColors];
     SkScalar* stops = stopsArray;
     SkShader::TileMode tm;
     int colorCount = RandomGradientParams(d->fRandom, colors, &stops, &tm);
     SkAutoTUnref<SkShader> shader(SkGradientShader::CreateLinear(points,
                                                                  colors, stops, colorCount,
                                                                  tm));
-    SkPaint paint;
-    GrColor paintColor;
-    GrFragmentProcessor* fp;
-    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 GrGLLinearGradient::emitCode(EmitArgs& args) {
     const GrLinearGradient& ge = args.fFp.cast<GrLinearGradient>();
     this->emitUniforms(args.fBuilder, ge);
     SkString t = args.fBuilder->getFragmentShaderBuilder()->ensureFSCoords2D(args.fCoords, 0);
     t.append(".x");
     this->emitColor(args.fBuilder, ge, t.c_str(), args.fOutputColor, args.fInputColor,
                     args.fSamplers);
 }
 
 /////////////////////////////////////////////////////////////////////
 
-bool SkLinearGradient::asFragmentProcessor(GrContext* context, const SkPaint& paint,
-                                           const SkMatrix& viewm, const SkMatrix* localMatrix,
-                                           GrColor* paintColor,
-                                           GrProcessorDataManager* procDataManager,
-                                           GrFragmentProcessor** fp)  const {
+const GrFragmentProcessor* SkLinearGradient::asFragmentProcessor(
+                                                 GrContext* context,
+                                                 const SkMatrix& viewm,
+                                                 const SkMatrix* localMatrix,
+                                                 SkFilterQuality,
+                                                 GrProcessorDataManager* procDataManager) const {
     SkASSERT(context);
 
     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);
 
-    *paintColor = SkColor2GrColorJustAlpha(paint.getColor());
-    *fp = GrLinearGradient::Create(context, procDataManager, *this, matrix, fTileMode);
-
-    return true;
+    SkAutoTUnref<const GrFragmentProcessor> inner(
+        GrLinearGradient::Create(context, procDataManager, *this, matrix, fTileMode));
+    return GrExtractAlphaFragmentProcessor::Create(inner);
 }
 
-#else
-
-bool SkLinearGradient::asFragmentProcessor(GrContext*, const SkPaint&, const SkMatrix&,
-                                           const SkMatrix*, GrColor*, GrProcessorDataManager*,
-                                           GrFragmentProcessor**)  const {
-    SkDEBUGFAIL("Should not call in GPU-less build");
-    return false;
-}
 
 #endif
 
 #ifndef SK_IGNORE_TO_STRING
 void SkLinearGradient::toString(SkString* str) const {
     str->append("SkLinearGradient (");
 
     str->appendf("start: (%f, %f)", fStart.fX, fStart.fY);
     str->appendf(" end: (%f, %f) ", fEnd.fX, fEnd.fY);
 
     this->INHERITED::toString(str);
 
     str->append(")");
 }
 #endif