text:
//
// File: vk_platform.h
//
/*
** Copyright (c) 2014-2015 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.
*/

#ifndef VK_PLATFORM_H_
#define VK_PLATFORM_H_

#ifdef __cplusplus
extern "C"
{
#endif // __cplusplus

/*
***************************************************************************************************
*   Platform-specific directives and type declarations
***************************************************************************************************
*/

/* Platform-specific calling convention macros.
 *
 * Platforms should define these so that Vulkan clients call Vulkan commands
 * with the same calling conventions that the Vulkan implementation expects.
 *
 * VKAPI_ATTR - Placed before the return type in function declarations.
 *              Useful for C++11 and GCC/Clang-style function attribute syntax.
 * VKAPI_CALL - Placed after the return type in function declarations.
 *              Useful for MSVC-style calling convention syntax.
 * VKAPI_PTR  - Placed between the '(' and '*' in function pointer types.
 *
 * Function declaration:  VKAPI_ATTR void VKAPI_CALL vkCommand(void);
 * Function pointer type: typedef void (VKAPI_PTR *PFN_vkCommand)(void);
 */
#if defined(_WIN32)
    // On Windows, Vulkan commands use the stdcall convention
    #define VKAPI_ATTR
    #define VKAPI_CALL __stdcall
    #define VKAPI_PTR  VKAPI_CALL
#elif defined(__ANDROID__) && defined(__ARM_EABI__) && !defined(__ARM_ARCH_7A__)
    // Android does not support Vulkan in native code using the "armeabi" ABI.
    #error "Vulkan requires the 'armeabi-v7a' or 'armeabi-v7a-hard' ABI on 32-bit ARM CPUs"
#elif defined(__ANDROID__) && defined(__ARM_ARCH_7A__)
    // On Android/ARMv7a, Vulkan functions use the armeabi-v7a-hard calling
    // convention, even if the application's native code is compiled with the
    // armeabi-v7a calling convention.
    #define VKAPI_ATTR __attribute__((pcs("aapcs-vfp")))
    #define VKAPI_CALL
    #define VKAPI_PTR  VKAPI_ATTR
#else
    // On other platforms, use the default calling convention
    #define VKAPI_ATTR
    #define VKAPI_CALL
    #define VKAPI_PTR
#endif

#include <stddef.h>

#if !defined(VK_NO_STDINT_H)
    #if defined(_MSC_VER) && (_MSC_VER < 1600)
        typedef signed   __int8  int8_t;
        typedef unsigned __int8  uint8_t;
        typedef signed   __int16 int16_t;
        typedef unsigned __int16 uint16_t;
        typedef signed   __int32 int32_t;
        typedef unsigned __int32 uint32_t;
        typedef signed   __int64 int64_t;
        typedef unsigned __int64 uint64_t;
    #else
        #include <stdint.h>
    #endif
#endif // !defined(VK_NO_STDINT_H)

#ifdef __cplusplus
} // extern "C"
#endif // __cplusplus

// Platform-specific headers required by platform window system extensions.
// These are enabled prior to #including "vulkan.h". The same enable then
// controls inclusion of the extension interfaces in vulkan.h.

#ifdef VK_USE_PLATFORM_ANDROID_KHR
#include <android/native_window.h>
#endif

#ifdef VK_USE_PLATFORM_MIR_KHR
#include <mir_toolkit/client_types.h>
#endif

#ifdef VK_USE_PLATFORM_WAYLAND_KHR
#include <wayland-client.h>
#endif

#ifdef VK_USE_PLATFORM_WIN32_KHR
#include <windows.h>
#endif

#ifdef VK_USE_PLATFORM_XLIB_KHR
#include <X11/Xlib.h>
#endif

#ifdef VK_USE_PLATFORM_XCB_KHR
#include <xcb/xcb.h>
#endif

#endif