Add automatic generation of mipmaps to Vulkan

src/gpu/vk/GrVkImageView.cpp

Index: src/gpu/vk/GrVkImageView.cpp
diff --git a/src/gpu/vk/GrVkImageView.cpp b/src/gpu/vk/GrVkImageView.cpp
index 1ab2475f1cba34c441735356588fbefa46cd34a5..bb893e72f93cd861cef41d30410ac9ee71d5c30d 100644
--- a/src/gpu/vk/GrVkImageView.cpp
+++ b/src/gpu/vk/GrVkImageView.cpp
@@ -10,7 +10,7 @@
 #include "GrVkUtil.h"
 
 const GrVkImageView* GrVkImageView::Create(GrVkGpu* gpu, VkImage image, VkFormat format,
-                                           Type viewType) {
+                                           Type viewType, uint32_t miplevels) {
     VkImageView imageView;
 
     // Create the VkImageView
@@ -23,7 +23,7 @@ const GrVkImageView* GrVkImageView::Create(GrVkGpu* gpu, VkImage image, VkFormat
         format,                                                 // format
         { VK_COMPONENT_SWIZZLE_R, VK_COMPONENT_SWIZZLE_G,
           VK_COMPONENT_SWIZZLE_B, VK_COMPONENT_SWIZZLE_A },     // components
-        { VK_IMAGE_ASPECT_COLOR_BIT, 0, 1, 0, 1 },              // subresourceRange
+        { VK_IMAGE_ASPECT_COLOR_BIT, 0, miplevels, 0, 1 },      // subresourceRange
     };
     if (kStencil_Type == viewType) {
         viewInfo.components.r = VK_COMPONENT_SWIZZLE_ZERO;