Add offset to memory allocations

src/gpu/vk/GrVkTextureRenderTarget.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 "GrVkTextureRenderTarget.h"
 
 #include "GrRenderTargetPriv.h"
@@ skipping 138 matching lines @@
     return trt;
 }
 
 GrVkTextureRenderTarget*
 GrVkTextureRenderTarget::CreateWrappedTextureRenderTarget(GrVkGpu* gpu,
                                                           const GrSurfaceDesc& desc,
                                                           GrWrapOwnership ownership,
                                                           const GrVkImageInfo* info) {
     SkASSERT(info);
     // Wrapped textures require both image and allocation (because they can be mapped)
-    SkASSERT(VK_NULL_HANDLE != info->fImage && VK_NULL_HANDLE != info->fAlloc);
+    SkASSERT(VK_NULL_HANDLE != info->fImage && VK_NULL_HANDLE != info->fAlloc.fMemory);
 
-    
     GrVkImage::Wrapped wrapped = kBorrow_GrWrapOwnership == ownership ? GrVkImage::kBorrowed_Wrapped
                                                                       : GrVkImage::kAdopted_Wrapped;
 
     GrVkTextureRenderTarget* trt = Create(gpu, desc, *info, SkBudgeted::kNo, wrapped);
 
     return trt;
 }