Hold on to image-filtered texture in SkGpuDevice

src/gpu/SkGpuDevice.cpp

 /*
  * Copyright 2011 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #include "SkGpuDevice.h"
 
 #include "effects/GrTextureDomainEffect.h"
@@ skipping 1370 matching lines @@
 
     int w = bitmap.width();
     int h = bitmap.height();
 
     GrTexture* texture;
     // draw sprite uses the default texture params
     SkAutoCachedTexture act(this, bitmap, NULL, &texture);
 
     SkImageFilter* filter = paint.getImageFilter();
     SkIPoint offset = SkIPoint::Make(0, 0);
+    // This bitmap will own the filtered result as a texture.
+    SkBitmap filteredBitmap;
+
     if (NULL != filter) {
-        SkBitmap filterBitmap;
-        if (filter_texture(this, fContext, texture, filter, w, h, &filterBitmap, &offset)) {
-            texture = (GrTexture*) filterBitmap.getTexture();
-            w = filterBitmap.width();
-            h = filterBitmap.height();
+        if (filter_texture(this, fContext, texture, filter, w, h, &filteredBitmap, &offset)) {
+            texture = (GrTexture*) filteredBitmap.getTexture();
+            w = filteredBitmap.width();
+            h = filteredBitmap.height();
         }
     }
 
     GrPaint grPaint;
     grPaint.addColorTextureEffect(texture, SkMatrix::I());
 
     if(!skPaint2GrPaintNoShader(this, paint, true, false, &grPaint)) {
         return;
     }
 
@@ skipping 54 matching lines @@
     GrTexture* devTex;
     if (NULL == (devTex = devRT->asTexture())) {
         return;
     }
 
     const SkBitmap& bm = dev->accessBitmap(false);
     int w = bm.width();
     int h = bm.height();
 
     SkImageFilter* filter = paint.getImageFilter();
+    // This bitmap will own the filtered result as a texture.
+    SkBitmap filteredBitmap;
 
     if (NULL != filter) {
-        SkBitmap filterBitmap;
         SkIPoint offset = SkIPoint::Make(0, 0);
-        if (filter_texture(this, fContext, devTex, filter, w, h, &filterBitmap, &offset)) {
-            devTex = filterBitmap.getTexture();
-            w = filterBitmap.width();
-            h = filterBitmap.height();
+        if (filter_texture(this, fContext, devTex, filter, w, h, &filteredBitmap, &offset)) {
+            devTex = filteredBitmap.getTexture();
+            w = filteredBitmap.width();
+            h = filteredBitmap.height();
             x += offset.fX;
             y += offset.fY;
         }
     }
 
     GrPaint grPaint;
     grPaint.addColorTextureEffect(devTex, SkMatrix::I());
 
     if (!skPaint2GrPaintNoShader(this, paint, true, false, &grPaint)) {
         return;
@@ skipping 271 matching lines @@
                          GrTexture* texture,
                          bool needClear)
     : SkDevice(make_bitmap(context, texture->asRenderTarget())) {
 
     GrAssert(texture && texture->asRenderTarget());
     // This constructor is called from onCreateCompatibleDevice. It has locked the RT in the texture
     // cache. We pass true for the third argument so that it will get unlocked.
     this->initFromRenderTarget(context, texture->asRenderTarget(), true);
     fNeedClear = needClear;
 }