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 #ifndef VK_PLATFORM_H_
22 #define VK_PLATFORM_H_
23 
24 #ifdef __cplusplus
25 extern "C"
26 {
27 #endif // __cplusplus
28 
29 /*
30 ***************************************************************************************************
31 *   Platform-specific directives and type declarations
32 ***************************************************************************************************
33 */
34 
35 /* Platform-specific calling convention macros.
36  *
37  * Platforms should define these so that Vulkan clients call Vulkan commands
38  * with the same calling conventions that the Vulkan implementation expects.
39  *
40  * VKAPI_ATTR - Placed before the return type in function declarations.
41  *              Useful for C++11 and GCC/Clang-style function attribute syntax.
42  * VKAPI_CALL - Placed after the return type in function declarations.
43  *              Useful for MSVC-style calling convention syntax.
44  * VKAPI_PTR  - Placed between the '(' and '*' in function pointer types.
45  *
46  * Function declaration:  VKAPI_ATTR void VKAPI_CALL vkCommand(void);
47  * Function pointer type: typedef void (VKAPI_PTR *PFN_vkCommand)(void);
48  */
49 #if defined(_WIN32)
50     // On Windows, Vulkan commands use the stdcall convention
51     #define VKAPI_ATTR
52     #define VKAPI_CALL __stdcall
53     #define VKAPI_PTR  VKAPI_CALL
54 #elif defined(__ANDROID__) && defined(__ARM_ARCH) && __ARM_ARCH < 7
55     #error "Vulkan isn't supported for the 'armeabi' NDK ABI"
56 #elif defined(__ANDROID__) && defined(__ARM_ARCH) && __ARM_ARCH >= 7 && defined(__ARM_32BIT_STATE)
57     // On Android 32-bit ARM targets, Vulkan functions use the "hardfloat"
58     // calling convention, i.e. float parameters are passed in registers. This
59     // is true even if the rest of the application passes floats on the stack,
60     // as it does by default when compiling for the armeabi-v7a NDK ABI.
61     #define VKAPI_ATTR __attribute__((pcs("aapcs-vfp")))
62     #define VKAPI_CALL
63     #define VKAPI_PTR  VKAPI_ATTR
64 #else
65     // On other platforms, use the default calling convention
66     #define VKAPI_ATTR
67     #define VKAPI_CALL
68     #define VKAPI_PTR
69 #endif
70 
71 #include <stddef.h>
72 
73 #if !defined(VK_NO_STDINT_H)
74     #if defined(_MSC_VER) && (_MSC_VER < 1600)
75         typedef signed   __int8  int8_t;
76         typedef unsigned __int8  uint8_t;
77         typedef signed   __int16 int16_t;
78         typedef unsigned __int16 uint16_t;
79         typedef signed   __int32 int32_t;
80         typedef unsigned __int32 uint32_t;
81         typedef signed   __int64 int64_t;
82         typedef unsigned __int64 uint64_t;
83     #else
84         #include <stdint.h>
85     #endif
86 #endif // !defined(VK_NO_STDINT_H)
87 
88 #ifdef __cplusplus
89 } // extern "C"
90 #endif // __cplusplus
91 
92 #endif
93