SkShader::asNewEffect Refactoring

src/effects/SkPerlinNoiseShader.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 "SkDither.h"
 #include "SkPerlinNoiseShader.h"
 #include "SkColorFilter.h"
@@ skipping 708 matching lines @@
     SkScalar baseFrequencyY = random->nextRangeScalar(0.01f,
                                                       0.99f);
 
     SkShader* shader = random->nextBool() ?
         SkPerlinNoiseShader::CreateFractalNoise(baseFrequencyX, baseFrequencyY, numOctaves, seed,
                                                 stitchTiles ? &tileSize : NULL) :
         SkPerlinNoiseShader::CreateTurbulence(baseFrequencyX, baseFrequencyY, numOctaves, seed,
                                              stitchTiles ? &tileSize : NULL);
 
     SkPaint paint;
-    GrEffectRef* effect = shader->asNewEffect(context, paint, NULL);
+    GrColor grColor;
+    GrEffectRef* effect;
+    shader->asNewEffect(context, paint, NULL, &grColor, &effect);
 
     SkDELETE(shader);
 
     return effect;
 }
 
 /////////////////////////////////////////////////////////////////////
 
 void GrGLSimplexNoise::emitCode(GrGLShaderBuilder* builder,
                                 const GrDrawEffect&,
@@ skipping 531 matching lines @@
 
 void GrGLSimplexNoise::setData(const GrGLUniformManager& uman, const GrDrawEffect& drawEffect) {
     INHERITED::setData(uman, drawEffect);
 
     const GrSimplexNoiseEffect& turbulence = drawEffect.castEffect<GrSimplexNoiseEffect>();
     uman.set1f(fSeedUni, turbulence.seed());
 }
 
 /////////////////////////////////////////////////////////////////////
 
-GrEffectRef* SkPerlinNoiseShader::asNewEffect(GrContext* context, const SkPaint& paint,
-                                              const SkMatrix* externalLocalMatrix) const {
+bool SkPerlinNoiseShader::asNewEffect(GrContext* context, const SkPaint& paint,
+                                      const SkMatrix* externalLocalMatrix, GrColor* grColor,
+                                      GrEffectRef** grEffect) const {
     SkASSERT(NULL != context);
-
+    
+    *grColor = SkColor2GrColorJustAlpha(paint.getColor());
+    
     SkMatrix localMatrix = this->getLocalMatrix();
     if (externalLocalMatrix) {
         localMatrix.preConcat(*externalLocalMatrix);
     }
 
     if (0 == fNumOctaves) {
         SkColor clearColor = 0;
         if (kFractalNoise_Type == fType) {
             clearColor = SkColorSetARGB(paint.getAlpha() / 2, 127, 127, 127);
         }
         SkAutoTUnref<SkColorFilter> cf(SkColorFilter::CreateModeFilter(
                                                 clearColor, SkXfermode::kSrc_Mode));
-        return cf->asNewEffect(context);
+        *grEffect = cf->asNewEffect(context);
+        return true;
     }
 
     // Either we don't stitch tiles, either we have a valid tile size
     SkASSERT(!fStitchTiles || !fTileSize.isEmpty());
 
 #ifdef SK_USE_SIMPLEX_NOISE
     // Simplex noise is currently disabled but can be enabled by defining SK_USE_SIMPLEX_NOISE
     sk_ignore_unused_variable(context);
-    GrEffectRef* effect =
+    *grEffect =
         GrSimplexNoiseEffect::Create(fType, fPaintingData->fBaseFrequency,
                                      fNumOctaves, fStitchTiles, fSeed,
                                      this->getLocalMatrix(), paint.getAlpha());
 #else
     GrTexture* permutationsTexture = GrLockAndRefCachedBitmapTexture(
         context, fPaintingData->getPermutationsBitmap(), NULL);
     GrTexture* noiseTexture = GrLockAndRefCachedBitmapTexture(
         context, fPaintingData->getNoiseBitmap(), NULL);
 
-    GrEffectRef* effect = (NULL != permutationsTexture) && (NULL != noiseTexture) ?
+    *grEffect = (NULL != permutationsTexture) && (NULL != noiseTexture) ?
         GrPerlinNoiseEffect::Create(fType, fPaintingData->fBaseFrequency,
                                     fNumOctaves, fStitchTiles,
                                     fPaintingData->fStitchDataInit,
                                     permutationsTexture, noiseTexture,
                                     localMatrix, paint.getAlpha()) :
         NULL;
 
     // Unlock immediately, this is not great, but we don't have a way of
     // knowing when else to unlock it currently. TODO: Remove this when
     // unref becomes the unlock replacement for all types of textures.
     if (NULL != permutationsTexture) {
         GrUnlockAndUnrefCachedBitmapTexture(permutationsTexture);
     }
     if (NULL != noiseTexture) {
         GrUnlockAndUnrefCachedBitmapTexture(noiseTexture);
     }
 #endif
 
-    return effect;
+    return true;
 }
 
 #else
 
-GrEffectRef* SkPerlinNoiseShader::asNewEffect(GrContext*, const SkPaint&, const SkMatrix*) const {
+bool SkPerlinNoiseShader::asNewEffect(GrContext* context, const SkPaint& paint,
+                                      const SkMatrix* externalLocalMatrix, GrColor* grColor,
+                                      GrEffectRef** grEffect) const {
     SkDEBUGFAIL("Should not call in GPU-less build");
-    return NULL;
+    return false;
 }
 
 #endif
 
 #ifndef SK_IGNORE_TO_STRING
 void SkPerlinNoiseShader::toString(SkString* str) const {
     str->append("SkPerlinNoiseShader: (");
 
     str->append("type: ");
     switch (fType) {
@@ skipping 16 matching lines @@
     str->append(" seed: ");
     str->appendScalar(fSeed);
     str->append(" stitch tiles: ");
     str->append(fStitchTiles ? "true " : "false ");
 
     this->INHERITED::toString(str);
 
     str->append(")");
 }
 #endif