Add support for creating Vulkan window surfaces.

extlibs/headers/vulkan/vulkan_ios.h

@@ -0,0 +1,58 @@
+#ifndef VULKAN_IOS_H_
+#define VULKAN_IOS_H_ 1
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/*
+** Copyright (c) 2015-2018 The Khronos Group Inc.
+**
+** Licensed under the Apache License, Version 2.0 (the "License");
+** you may not use this file except in compliance with the License.
+** You may obtain a copy of the License at
+**
+**     http://www.apache.org/licenses/LICENSE-2.0
+**
+** Unless required by applicable law or agreed to in writing, software
+** distributed under the License is distributed on an "AS IS" BASIS,
+** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+** See the License for the specific language governing permissions and
+** limitations under the License.
+*/
+
+/*
+** This header is generated from the Khronos Vulkan XML API Registry.
+**
+*/
+
+
+#define VK_MVK_ios_surface 1
+#define VK_MVK_IOS_SURFACE_SPEC_VERSION   2
+#define VK_MVK_IOS_SURFACE_EXTENSION_NAME "VK_MVK_ios_surface"
+
+typedef VkFlags VkIOSSurfaceCreateFlagsMVK;
+
+typedef struct VkIOSSurfaceCreateInfoMVK {
+    VkStructureType               sType;
+    const void*                   pNext;
+    VkIOSSurfaceCreateFlagsMVK    flags;
+    const void*                   pView;
+} VkIOSSurfaceCreateInfoMVK;
+
+
+typedef VkResult (VKAPI_PTR *PFN_vkCreateIOSSurfaceMVK)(VkInstance instance, const VkIOSSurfaceCreateInfoMVK* pCreateInfo, const VkAllocationCallbacks* pAllocator, VkSurfaceKHR* pSurface);
+
+#ifndef VK_NO_PROTOTYPES
+VKAPI_ATTR VkResult VKAPI_CALL vkCreateIOSSurfaceMVK(
+    VkInstance                                  instance,
+    const VkIOSSurfaceCreateInfoMVK*            pCreateInfo,
+    const VkAllocationCallbacks*                pAllocator,
+    VkSurfaceKHR*                               pSurface);
+#endif
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif