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* MVKExtensions.h
* Copyright (c) 2014-2018 The Brenwill Workshop Ltd. (
* 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
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* See the License for the specific language governing permissions and
* limitations under the License.
#pragma once
#include "mvk_vulkan.h"
#include <string>
/** Describes a Vulkan extension and whether or not it is enabled or supported. */
struct MVKExtension {
bool enabled = false;
VkExtensionProperties* pProperties;
MVKExtension(VkExtensionProperties* pProperties, bool enableForPlatform = false);
* A fixed list of the Vulkan extensions known to MoltenVK, with
* an indication of whether each extension is supported/enabled.
* To add support for a Vulkan extension, add a variable to this list.
struct MVKExtensionList {
union {
struct {
#define MVK_EXTENSION(var, EXT) MVKExtension vk_ ##var;
#include "MVKExtensions.def"
MVKExtension extensionArray;
/** Returns the total number of extensions that are tracked by this object. */
static uint32_t getCount() { return sizeof(MVKExtensionList) / sizeof(MVKExtension); }
/** Returns whether the named extension is enabled. */
bool isEnabled(const char* extnName) const;
/** Enables the named extension. */
void enable(const char* extnName);
* Enables the named extensions.
* If parent is non null, the extension must also be enabled in the parent in order
* for it to be enabled here. If it is not enabled in the parent, an error is logged
* and returned. Returns VK_SUCCESS if all requested extensions were able to be enabled.
VkResult enable(uint32_t count, const char* const* names, MVKExtensionList* parent = nullptr);
* Returns a string containing the names of the enabled extensions, separated by the separator string.
* If prefixFirstWithSeparator is true the separator will also appear before the first extension name.
std::string enabledNamesString(const char* separator = " ", bool prefixFirstWithSeparator = false) const;
MVKExtensionList(bool enableForPlatform = false);