First pass at VulkanViewer

src/gpu/vk/GrVkBackendContext.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 "vk/GrVkBackendContext.h"
 #include "vk/GrVkExtensions.h"
 #include "vk/GrVkInterface.h"
 #include "vk/GrVkUtil.h"
 
 ////////////////////////////////////////////////////////////////////////////////
 // Helper code to set up Vulkan context objects
 
 #ifdef ENABLE_VK_LAYERS
 const char* kDebugLayerNames[] = {
     // elements of VK_LAYER_LUNARG_standard_validation
     "VK_LAYER_LUNARG_threading",
     "VK_LAYER_LUNARG_param_checker",
     "VK_LAYER_LUNARG_device_limits",
     "VK_LAYER_LUNARG_object_tracker",
     "VK_LAYER_LUNARG_image",
     "VK_LAYER_LUNARG_mem_tracker",
     "VK_LAYER_LUNARG_draw_state",
     "VK_LAYER_LUNARG_swapchain",
-    "VK_LAYER_GOOGLE_unique_objects",
+    //"VK_LAYER_GOOGLE_unique_objects",
     // not included in standard_validation
     //"VK_LAYER_LUNARG_api_dump",
     //"VK_LAYER_LUNARG_vktrace",
     //"VK_LAYER_LUNARG_screenshot",
 };
 #endif
 
 // the minimum version of Vulkan supported
 const uint32_t kGrVkMinimumVersion = VK_MAKE_VERSION(1, 0, 3);
 
@@ skipping 114 matching lines @@
 
     SkTArray<const char*> deviceLayerNames;
     SkTArray<const char*> deviceExtensionNames;
 #ifdef ENABLE_VK_LAYERS
     for (size_t i = 0; i < SK_ARRAY_COUNT(kDebugLayerNames); ++i) {
         if (extensions.hasDeviceLayer(kDebugLayerNames[i])) {
             deviceLayerNames.push_back(kDebugLayerNames[i]);
         }
     }
 #endif
+    if (extensions.hasDeviceExtension(VK_KHR_SWAPCHAIN_EXTENSION_NAME)) {
+        deviceExtensionNames.push_back(VK_KHR_SWAPCHAIN_EXTENSION_NAME);
+        extensionFlags |= kKHR_swapchain_GrVkExtensionFlag;
+    }
     if (extensions.hasDeviceExtension("VK_NV_glsl_shader")) {
         deviceExtensionNames.push_back("VK_NV_glsl_shader");
         extensionFlags |= kNV_glsl_shader_GrVkExtensionFlag;
     }
 
     // query to get the physical device properties
     VkPhysicalDeviceFeatures deviceFeatures;
     vkGetPhysicalDeviceFeatures(physDev, &deviceFeatures);
     // this looks like it would slow things down,
     // and we can't depend on it on all platforms
@@ skipping 56 matching lines @@
 
     return ctx;
 }
 
 GrVkBackendContext::~GrVkBackendContext() {
     vkDestroyDevice(fDevice, nullptr);
     fDevice = VK_NULL_HANDLE;
     vkDestroyInstance(fInstance, nullptr);
     fInstance = VK_NULL_HANDLE;
 }