Add automatic generation of mipmaps to Vulkan

src/gpu/vk/GrVkStencilAttachment.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 "GrVkStencilAttachment.h"
 #include "GrVkGpu.h"
 #include "GrVkImage.h"
@@ skipping 33 matching lines @@
                             VK_IMAGE_USAGE_TRANSFER_DST_BIT;
     imageDesc.fMemProps = VK_MEMORY_PROPERTY_DEVICE_LOCAL_BIT;
 
     const GrVkImage::Resource* imageResource = GrVkImage::CreateResource(gpu, imageDesc);
     if (!imageResource) {
         return nullptr;
     }
 
     const GrVkImageView* imageView = GrVkImageView::Create(gpu, imageResource->fImage,
                                                            format.fInternalFormat,
-                                                           GrVkImageView::kStencil_Type);
+                                                           GrVkImageView::kStencil_Type, 1);
     if (!imageView) {
         imageResource->unref(gpu);
         return nullptr;
     }
 
     GrVkStencilAttachment* stencil = new GrVkStencilAttachment(gpu, format, imageDesc,
                                                                imageResource, imageView);
     imageResource->unref(gpu);
     imageView->unref(gpu);
 
@@ skipping 27 matching lines @@
     this->abandonImage();
     fStencilView->unrefAndAbandon();
     fStencilView = nullptr;
     GrStencilAttachment::onAbandon();
 }
 
 GrVkGpu* GrVkStencilAttachment::getVkGpu() const {
     SkASSERT(!this->wasDestroyed());
     return static_cast<GrVkGpu*>(this->getGpu());
 }