1//
2// File: vk_platform.h
3//
4/*
5** Copyright (c) 2014-2017 The Khronos Group Inc.
6**
7** Licensed under the Apache License, Version 2.0 (the "License");
8** you may not use this file except in compliance with the License.
9** You may obtain a copy of the License at
10**
11**     http://www.apache.org/licenses/LICENSE-2.0
12**
13** Unless required by applicable law or agreed to in writing, software
14** distributed under the License is distributed on an "AS IS" BASIS,
15** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
16** See the License for the specific language governing permissions and
17** limitations under the License.
18*/
19
20/*
21 * Below this point is based on the original Khronos vk_platform.h header, but simplified for use in
22 * Skia when we are not building with a Vulkan backend, but still need the type declarations for
23 * compiling.
24 */
25
26#ifndef VK_PLATFORM_H_
27#define VK_PLATFORM_H_
28
29#ifdef __cplusplus
30extern "C"
31{
32#endif // __cplusplus
33
34/*
35***************************************************************************************************
36*   Platform-specific directives and type declarations
37***************************************************************************************************
38*/
39
40/* Platform-specific calling convention macros.
41 *
42 * Platforms should define these so that Vulkan clients call Vulkan commands
43 * with the same calling conventions that the Vulkan implementation expects.
44 *
45 * VKAPI_ATTR - Placed before the return type in function declarations.
46 *              Useful for C++11 and GCC/Clang-style function attribute syntax.
47 * VKAPI_CALL - Placed after the return type in function declarations.
48 *              Useful for MSVC-style calling convention syntax.
49 * VKAPI_PTR  - Placed between the '(' and '*' in function pointer types.
50 *
51 * Function declaration:  VKAPI_ATTR void VKAPI_CALL vkCommand(void);
52 * Function pointer type: typedef void (VKAPI_PTR *PFN_vkCommand)(void);
53 */
54#if defined(_WIN32)
55    // On Windows, Vulkan commands use the stdcall convention
56    #define VKAPI_ATTR
57    #define VKAPI_CALL __stdcall
58    #define VKAPI_PTR  VKAPI_CALL
59#elif defined(__ANDROID__) && defined(__ARM_ARCH) && __ARM_ARCH < 7
60    #error "Vulkan isn't supported for the 'armeabi' NDK ABI"
61#elif defined(__ANDROID__) && defined(__ARM_ARCH) && __ARM_ARCH >= 7 && defined(__ARM_32BIT_STATE)
62    // On Android 32-bit ARM targets, Vulkan functions use the "hardfloat"
63    // calling convention, i.e. float parameters are passed in registers. This
64    // is true even if the rest of the application passes floats on the stack,
65    // as it does by default when compiling for the armeabi-v7a NDK ABI.
66    #define VKAPI_ATTR __attribute__((pcs("aapcs-vfp")))
67    #define VKAPI_CALL
68    #define VKAPI_PTR  VKAPI_ATTR
69#else
70    // On other platforms, use the default calling convention
71    #define VKAPI_ATTR
72    #define VKAPI_CALL
73    #define VKAPI_PTR
74#endif
75
76#include <stddef.h>
77
78#if !defined(VK_NO_STDINT_H)
79    #if defined(_MSC_VER) && (_MSC_VER < 1600)
80        typedef signed   __int8  int8_t;
81        typedef unsigned __int8  uint8_t;
82        typedef signed   __int16 int16_t;
83        typedef unsigned __int16 uint16_t;
84        typedef signed   __int32 int32_t;
85        typedef unsigned __int32 uint32_t;
86        typedef signed   __int64 int64_t;
87        typedef unsigned __int64 uint64_t;
88    #else
89        #include <stdint.h>
90    #endif
91#endif // !defined(VK_NO_STDINT_H)
92
93#ifdef __cplusplus
94} // extern "C"
95#endif // __cplusplus
96
97#endif
98