SkBitmapProcShader: if the bitmap already has a texture, just use it.

src/core/SkBitmapProcShader.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 "SkColorPriv.h"
 #include "SkReadBuffer.h"
 #include "SkWriteBuffer.h"
@@ skipping 458 matching lines @@
         default:
             SkErrorInternals::SetError( kInvalidPaint_SkError,
                                         "Sorry, I don't understand the filtering "
                                         "mode you asked for.  Falling back to "
                                         "MIPMaps.");
             textureFilterMode = GrTextureParams::kMipMap_FilterMode;
             break;
 
     }
     GrTextureParams params(tm, textureFilterMode);
-    GrTexture* texture = GrLockAndRefCachedBitmapTexture(context, fRawBitmap, &params);
+    GrTexture* texture = fRawBitmap.getTexture();
+    bool didLockTexture = false;
+
+    if (!texture) {
+        texture = GrLockAndRefCachedBitmapTexture(context, fRawBitmap, &params);
+        didLockTexture = true;
+    }
 
     if (NULL == texture) {
         SkErrorInternals::SetError( kInternalError_SkError,
                                     "Couldn't convert bitmap to texture.");
         return NULL;
     }
 
     GrEffectRef* effect = NULL;
     if (paintFilterLevel == SkPaint::kHigh_FilterLevel) {
         effect = GrBicubicEffect::Create(texture, matrix, tm);
     } else {
         effect = GrSimpleTextureEffect::Create(texture, matrix, params);
     }
-    GrUnlockAndUnrefCachedBitmapTexture(texture);
+    if (didLockTexture) {
+        GrUnlockAndUnrefCachedBitmapTexture(texture);
+    }
     return effect;
 }
 #endif