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1501
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1 //
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2 // File: vk_platform.h
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3 //
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4 /*
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5 ** Copyright 2014-2025 The Khronos Group Inc.
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6 **
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7 ** SPDX-License-Identifier: Apache-2.0
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8 */
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9
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10
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11 #ifndef VK_PLATFORM_H_
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12 #define VK_PLATFORM_H_
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13
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14 #ifdef __cplusplus
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15 extern "C"
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16 {
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17 #endif // __cplusplus
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18
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19 /*
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20 ***************************************************************************************************
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21 * Platform-specific directives and type declarations
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22 ***************************************************************************************************
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23 */
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24
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25 /* Platform-specific calling convention macros.
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26 *
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27 * Platforms should define these so that Vulkan clients call Vulkan commands
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28 * with the same calling conventions that the Vulkan implementation expects.
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29 *
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30 * VKAPI_ATTR - Placed before the return type in function declarations.
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31 * Useful for C++11 and GCC/Clang-style function attribute syntax.
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32 * VKAPI_CALL - Placed after the return type in function declarations.
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33 * Useful for MSVC-style calling convention syntax.
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34 * VKAPI_PTR - Placed between the '(' and '*' in function pointer types.
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35 *
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36 * Function declaration: VKAPI_ATTR void VKAPI_CALL vkCommand(void);
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37 * Function pointer type: typedef void (VKAPI_PTR *PFN_vkCommand)(void);
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38 */
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39 #if defined(_WIN32)
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40 // On Windows, Vulkan commands use the stdcall convention
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41 #define VKAPI_ATTR
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42 #define VKAPI_CALL __stdcall
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43 #define VKAPI_PTR VKAPI_CALL
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44 #elif defined(__ANDROID__) && defined(__ARM_ARCH) && __ARM_ARCH < 7
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45 #error "Vulkan is not supported for the 'armeabi' NDK ABI"
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46 #elif defined(__ANDROID__) && defined(__ARM_ARCH) && __ARM_ARCH >= 7 && defined(__ARM_32BIT_STATE)
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47 // On Android 32-bit ARM targets, Vulkan functions use the "hardfloat"
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48 // calling convention, i.e. float parameters are passed in registers. This
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49 // is true even if the rest of the application passes floats on the stack,
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50 // as it does by default when compiling for the armeabi-v7a NDK ABI.
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51 #define VKAPI_ATTR __attribute__((pcs("aapcs-vfp")))
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52 #define VKAPI_CALL
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53 #define VKAPI_PTR VKAPI_ATTR
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54 #else
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55 // On other platforms, use the default calling convention
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56 #define VKAPI_ATTR
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57 #define VKAPI_CALL
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58 #define VKAPI_PTR
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59 #endif
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60
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61 #if !defined(VK_NO_STDDEF_H)
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62 #include <stddef.h>
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63 #endif // !defined(VK_NO_STDDEF_H)
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64
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65 #if !defined(VK_NO_STDINT_H)
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66 #if defined(_MSC_VER) && (_MSC_VER < 1600)
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67 typedef signed __int8 int8_t;
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68 typedef unsigned __int8 uint8_t;
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69 typedef signed __int16 int16_t;
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70 typedef unsigned __int16 uint16_t;
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71 typedef signed __int32 int32_t;
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72 typedef unsigned __int32 uint32_t;
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73 typedef signed __int64 int64_t;
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74 typedef unsigned __int64 uint64_t;
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75 #else
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76 #include <stdint.h>
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77 #endif
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78 #endif // !defined(VK_NO_STDINT_H)
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79
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80 #ifdef __cplusplus
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81 } // extern "C"
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82 #endif // __cplusplus
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83
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84 #endif
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