GrResourceCache2 manages scratch texture.

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 979 matching lines @@
                                                 clearColor, SkXfermode::kSrc_Mode));
         *fp = cf->asFragmentProcessor(context);
         return true;
     }
 
     // Either we don't stitch tiles, either we have a valid tile size
     SkASSERT(!fStitchTiles || !fTileSize.isEmpty());
 
     SkPerlinNoiseShader::PaintingData* paintingData =
             SkNEW_ARGS(PaintingData, (fTileSize, fSeed, fBaseFrequencyX, fBaseFrequencyY, matrix));
-    GrTexture* permutationsTexture = GrLockAndRefCachedBitmapTexture(
-        context, paintingData->getPermutationsBitmap(), NULL);
-    GrTexture* noiseTexture = GrLockAndRefCachedBitmapTexture(
-        context, paintingData->getNoiseBitmap(), NULL);
+    SkAutoTUnref<GrTexture> permutationsTexture(
+        GrRefCachedBitmapTexture(context, paintingData->getPermutationsBitmap(), NULL));
+    SkAutoTUnref<GrTexture> noiseTexture(
+        GrRefCachedBitmapTexture(context, paintingData->getNoiseBitmap(), NULL));
 
     SkMatrix m = context->getMatrix();
     m.setTranslateX(-localMatrix.getTranslateX() + SK_Scalar1);
     m.setTranslateY(-localMatrix.getTranslateY() + SK_Scalar1);
     if ((permutationsTexture) && (noiseTexture)) {
         *fp = GrPerlinNoiseEffect::Create(fType,
                                           fNumOctaves,
                                           fStitchTiles,
                                           paintingData,
                                           permutationsTexture, noiseTexture,
                                           m, paint.getAlpha());
     } else {
         SkDELETE(paintingData);
         *fp = 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 (permutationsTexture) {
-        GrUnlockAndUnrefCachedBitmapTexture(permutationsTexture);
-    }
-    if (noiseTexture) {
-        GrUnlockAndUnrefCachedBitmapTexture(noiseTexture);
-    }
-
     return true;
 }
 
 #else
 
 bool SkPerlinNoiseShader::asFragmentProcessor(GrContext*, const SkPaint&, const SkMatrix*, GrColor*,
                                               GrFragmentProcessor**) const {
     SkDEBUGFAIL("Should not call in GPU-less build");
     return false;
 }
@@ skipping 25 matching lines @@
     str->append(" seed: ");
     str->appendScalar(fSeed);
     str->append(" stitch tiles: ");
     str->append(fStitchTiles ? "true " : "false ");
 
     this->INHERITED::toString(str);
 
     str->append(")");
 }
 #endif