Remove GrTexture::releaseRenderTarget() and add GrSurface::isSameAs().

src/gpu/GrContext.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 "GrContext.h"
@@ skipping 355 matching lines @@
         drawState->setVertexAttribs(kVertexAttribs, SK_ARRAY_COUNT(kVertexAttribs));
 
         GrDrawTarget::AutoReleaseGeometry arg(fGpu, 4, 0);
 
         if (arg.succeeded()) {
             GrPoint* verts = (GrPoint*) arg.vertices();
             verts[0].setIRectFan(0, 0, texture->width(), texture->height(), 2 * sizeof(GrPoint));
             verts[1].setIRectFan(0, 0, 1, 1, 2 * sizeof(GrPoint));
             fGpu->drawNonIndexed(kTriangleFan_GrPrimitiveType, 0, 4);
         }
-        texture->releaseRenderTarget();
     } else {
         // TODO: Our CPU stretch doesn't filter. But we create separate
         // stretched textures when the texture params is either filtered or
         // not. Either implement filtered stretch blit on CPU or just create
         // one when FBO case fails.
 
         rtDesc.fFlags = kNone_GrTextureFlags;
         // no longer need to clamp at min RT size.
         rtDesc.fWidth  = GrNextPow2(desc.fWidth);
         rtDesc.fHeight = GrNextPow2(desc.fHeight);
@@ skipping 1412 matching lines @@
         return srcTexture;
     }
 }
 
 ///////////////////////////////////////////////////////////////////////////////
 #if GR_CACHE_STATS
 void GrContext::printCacheStats() const {
     fTextureCache->printStats();
 }
 #endif