Set barriers and image layout changes between mipmap blits.

src/gpu/vk/GrVkImage.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 "GrVkGpu.h"
 #include "GrVkImage.h"
 #include "GrVkMemory.h"
@@ skipping 12 matching lines @@
             SkASSERT(GrVkFormatToPixelConfig(format, nullptr));
             return VK_IMAGE_ASPECT_COLOR_BIT;
     }
 }
 
 void GrVkImage::setImageLayout(const GrVkGpu* gpu, VkImageLayout newLayout,
                                VkAccessFlags srcAccessMask,
                                VkAccessFlags dstAccessMask,
                                VkPipelineStageFlags srcStageMask,
                                VkPipelineStageFlags dstStageMask,
+                               uint32_t baseMipLevel,
+                               uint32_t levelCount,
                                bool byRegion) {
     SkASSERT(VK_IMAGE_LAYOUT_UNDEFINED != newLayout &&
              VK_IMAGE_LAYOUT_PREINITIALIZED != newLayout);
     // Is this reasonable? Could someone want to keep the same layout but use the masks to force
     // a barrier on certain things?
     if (newLayout == fCurrentLayout) {
         return;
     }
     VkImageAspectFlags aspectFlags = vk_format_to_aspect_flags(fResource->fFormat);
     VkImageMemoryBarrier imageMemoryBarrier = {
         VK_STRUCTURE_TYPE_IMAGE_MEMORY_BARRIER,          // sType
         NULL,                                            // pNext
         srcAccessMask,                                   // outputMask
         dstAccessMask,                                   // inputMask
         fCurrentLayout,                                  // oldLayout
         newLayout,                                       // newLayout
         VK_QUEUE_FAMILY_IGNORED,                         // srcQueueFamilyIndex
         VK_QUEUE_FAMILY_IGNORED,                         // dstQueueFamilyIndex
         fResource->fImage,                               // image
-        { aspectFlags, 0, fResource->fLevelCount, 0, 1 } // subresourceRange
+        { aspectFlags, baseMipLevel, levelCount, 0, 1 }  // subresourceRange
     };
 
     // TODO: restrict to area of image we're interested in
     gpu->addImageMemoryBarrier(srcStageMask, dstStageMask, byRegion, &imageMemoryBarrier);
 
     fCurrentLayout = newLayout;
 }
 
 const GrVkImage::Resource* GrVkImage::CreateResource(const GrVkGpu* gpu,
                                                      const ImageDesc& imageDesc) {
@@ skipping 64 matching lines @@
     }
 }
 
 void GrVkImage::Resource::freeGPUData(const GrVkGpu* gpu) const {
     VK_CALL(gpu, DestroyImage(gpu->device(), fImage, nullptr));
     VK_CALL(gpu, FreeMemory(gpu->device(), fAlloc, nullptr));
 }
 
 void GrVkImage::BorrowedResource::freeGPUData(const GrVkGpu* gpu) const {
 }