Bundle SkShader::asFragmentProcessor arguments in a struct

src/image/SkImageShader.cpp

 /*
  * Copyright 2015 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #include "SkBitmapProcShader.h"
 #include "SkBitmapProvider.h"
 #include "SkImage_Base.h"
@@ skipping 65 matching lines @@
 
 #if SK_SUPPORT_GPU
 
 #include "GrTextureAccess.h"
 #include "SkGr.h"
 #include "SkGrPriv.h"
 #include "effects/GrSimpleTextureEffect.h"
 #include "effects/GrBicubicEffect.h"
 #include "effects/GrSimpleTextureEffect.h"
 
-sk_sp<GrFragmentProcessor> SkImageShader::asFragmentProcessor(
-                                                     GrContext* context,
-                                                     const SkMatrix& viewM,
-                                                     const SkMatrix* localMatrix,
-                                                     SkFilterQuality filterQuality,
-                                                     SkSourceGammaTreatment gammaTreatment) const {
+sk_sp<GrFragmentProcessor> SkImageShader::asFragmentProcessor(const AsFPArgs& args) const {
     SkMatrix matrix;
     matrix.setIDiv(fImage->width(), fImage->height());
 
     SkMatrix lmInverse;
     if (!this->getLocalMatrix().invert(&lmInverse)) {
         return nullptr;
     }
-    if (localMatrix) {
+    if (args.fLocalMatrix) {
         SkMatrix inv;
-        if (!localMatrix->invert(&inv)) {
+        if (!args.fLocalMatrix->invert(&inv)) {
             return nullptr;
         }
         lmInverse.postConcat(inv);
     }
     matrix.preConcat(lmInverse);
 
     SkShader::TileMode tm[] = { fTileModeX, fTileModeY };
 
     // Must set wrap and filter on the sampler before requesting a texture. In two places below
     // we check the matrix scale factors to determine how to interpret the filter quality setting.
     // This completely ignores the complexity of the drawVertices case where explicit local coords
     // are provided by the caller.
     bool doBicubic;
     GrTextureParams::FilterMode textureFilterMode =
-    GrSkFilterQualityToGrFilterMode(filterQuality, viewM, this->getLocalMatrix(), &doBicubic);
+    GrSkFilterQualityToGrFilterMode(args.fFilterQuality, *args.fViewMatrix, this->getLocalMatrix(),
+                                    &doBicubic);
     GrTextureParams params(tm, textureFilterMode);
-    SkAutoTUnref<GrTexture> texture(as_IB(fImage)->asTextureRef(context, params, gammaTreatment));
+    SkAutoTUnref<GrTexture> texture(as_IB(fImage)->asTextureRef(args.fContext, params,
+                                                                args.fGammaTreatment));
     if (!texture) {
         return nullptr;
     }
 
     sk_sp<GrFragmentProcessor> inner;
     if (doBicubic) {
         inner = GrBicubicEffect::Make(texture, nullptr, matrix, tm);
     } else {
         inner = GrSimpleTextureEffect::Make(texture, nullptr, matrix, params);
     }
 
     if (GrPixelConfigIsAlphaOnly(texture->config())) {
         return inner;
     }
     return sk_sp<GrFragmentProcessor>(GrFragmentProcessor::MulOutputByInputAlpha(std::move(inner)));
 }
 
 #endif