/*
 * MVKEnvironment.h
 *
 * Copyright (c) 2014-2018 The Brenwill Workshop Ltd. (http://www.brenwill.com)
 *
 * 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.
 */


#pragma once

#include "MVKCommonEnvironment.h"


/** Macro to determine the Vulkan version supported by MoltenVK. */
#define MVK_VULKAN_API_VERSION		VK_MAKE_VERSION(VK_VERSION_MAJOR(VK_API_VERSION_1_0),	\
													VK_VERSION_MINOR(VK_API_VERSION_1_0),	\
													VK_HEADER_VERSION)

/** 
 * Macro to adjust the specified Vulkan version to a value that can be compared for conformance 
 * against another Vulkan version. This macro strips the patch value from the specified Vulkan
 * version and replaces it with zero. A Vulkan version is comformant with another version if it
 * has the same or higher major and minor values, regardless of the patch value of each version.
 * In particular, by definition, a Vulkan version is conformant with another Vulkan version that
 * has a larger patch number, as long as it has a same or greater major and minor value.
 */
#define MVK_VULKAN_API_VERSION_CONFORM(api_ver)		VK_MAKE_VERSION(VK_VERSION_MAJOR(api_ver),	\
                                                                    VK_VERSION_MINOR(api_ver),	\
                                                                    0)