| 1 | #ifndef __khrplatform_h_
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| 2 | #define __khrplatform_h_
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| 3 |
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| 4 | /*
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| 5 | ** Copyright (c) 2008-2018 The Khronos Group Inc.
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| 6 | **
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| 7 | ** Permission is hereby granted, free of charge, to any person obtaining a
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| 8 | ** copy of this software and/or associated documentation files (the
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| 9 | ** "Materials"), to deal in the Materials without restriction, including
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| 10 | ** without limitation the rights to use, copy, modify, merge, publish,
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| 11 | ** distribute, sublicense, and/or sell copies of the Materials, and to
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| 12 | ** permit persons to whom the Materials are furnished to do so, subject to
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| 13 | ** the following conditions:
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| 14 | **
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| 15 | ** The above copyright notice and this permission notice shall be included
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| 16 | ** in all copies or substantial portions of the Materials.
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| 17 | **
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| 18 | ** THE MATERIALS ARE PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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| 19 | ** EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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| 20 | ** MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
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| 21 | ** IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
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| 22 | ** CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
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| 23 | ** TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
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| 24 | ** MATERIALS OR THE USE OR OTHER DEALINGS IN THE MATERIALS.
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| 25 | */
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| 26 |
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| 27 | /* Khronos platform-specific types and definitions.
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| 28 | *
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| 29 | * The master copy of khrplatform.h is maintained in the Khronos EGL
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| 30 | * Registry repository at https://github.com/KhronosGroup/EGL-Registry
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| 31 | * The last semantic modification to khrplatform.h was at commit ID:
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| 32 | * 67a3e0864c2d75ea5287b9f3d2eb74a745936692
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| 33 | *
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| 34 | * Adopters may modify this file to suit their platform. Adopters are
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| 35 | * encouraged to submit platform specific modifications to the Khronos
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| 36 | * group so that they can be included in future versions of this file.
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| 37 | * Please submit changes by filing pull requests or issues on
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| 38 | * the EGL Registry repository linked above.
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| 39 | *
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| 40 | *
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| 41 | * See the Implementer's Guidelines for information about where this file
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| 42 | * should be located on your system and for more details of its use:
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| 43 | * http://www.khronos.org/registry/implementers_guide.pdf
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| 44 | *
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| 45 | * This file should be included as
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| 46 | * #include <KHR/khrplatform.h>
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| 47 | * by Khronos client API header files that use its types and defines.
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| 48 | *
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| 49 | * The types in khrplatform.h should only be used to define API-specific types.
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| 50 | *
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| 51 | * Types defined in khrplatform.h:
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| 52 | * khronos_int8_t signed 8 bit
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| 53 | * khronos_uint8_t unsigned 8 bit
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| 54 | * khronos_int16_t signed 16 bit
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| 55 | * khronos_uint16_t unsigned 16 bit
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| 56 | * khronos_int32_t signed 32 bit
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| 57 | * khronos_uint32_t unsigned 32 bit
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| 58 | * khronos_int64_t signed 64 bit
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| 59 | * khronos_uint64_t unsigned 64 bit
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| 60 | * khronos_intptr_t signed same number of bits as a pointer
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| 61 | * khronos_uintptr_t unsigned same number of bits as a pointer
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| 62 | * khronos_ssize_t signed size
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| 63 | * khronos_usize_t unsigned size
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| 64 | * khronos_float_t signed 32 bit floating point
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| 65 | * khronos_time_ns_t unsigned 64 bit time in nanoseconds
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| 66 | * khronos_utime_nanoseconds_t unsigned time interval or absolute time in
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| 67 | * nanoseconds
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| 68 | * khronos_stime_nanoseconds_t signed time interval in nanoseconds
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| 69 | * khronos_boolean_enum_t enumerated boolean type. This should
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| 70 | * only be used as a base type when a client API's boolean type is
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| 71 | * an enum. Client APIs which use an integer or other type for
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| 72 | * booleans cannot use this as the base type for their boolean.
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| 73 | *
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| 74 | * Tokens defined in khrplatform.h:
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| 75 | *
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| 76 | * KHRONOS_FALSE, KHRONOS_TRUE Enumerated boolean false/true values.
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| 77 | *
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| 78 | * KHRONOS_SUPPORT_INT64 is 1 if 64 bit integers are supported; otherwise 0.
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| 79 | * KHRONOS_SUPPORT_FLOAT is 1 if floats are supported; otherwise 0.
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| 80 | *
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| 81 | * Calling convention macros defined in this file:
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| 82 | * KHRONOS_APICALL
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| 83 | * KHRONOS_APIENTRY
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| 84 | * KHRONOS_APIATTRIBUTES
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| 85 | *
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| 86 | * These may be used in function prototypes as:
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| 87 | *
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| 88 | * KHRONOS_APICALL void KHRONOS_APIENTRY funcname(
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| 89 | * int arg1,
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| 90 | * int arg2) KHRONOS_APIATTRIBUTES;
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| 91 | */
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| 92 |
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| 93 | #if defined(__SCITECH_SNAP__) && !defined(KHRONOS_STATIC)
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| 94 | # define KHRONOS_STATIC 1
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| 95 | #endif
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| 96 |
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| 97 | /*-------------------------------------------------------------------------
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| 98 | * Definition of KHRONOS_APICALL
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| 99 | *-------------------------------------------------------------------------
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| 100 | * This precedes the return type of the function in the function prototype.
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| 101 | */
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| 102 | #if defined(KHRONOS_STATIC)
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| 103 | /* If the preprocessor constant KHRONOS_STATIC is defined, make the
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| 104 | * header compatible with static linking. */
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| 105 | # define KHRONOS_APICALL
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| 106 | #elif defined(_WIN32)
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| 107 | # define KHRONOS_APICALL __declspec(dllimport)
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| 108 | #elif defined (__SYMBIAN32__)
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| 109 | # define KHRONOS_APICALL IMPORT_C
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| 110 | #elif defined(__ANDROID__)
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| 111 | # define KHRONOS_APICALL __attribute__((visibility("default")))
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| 112 | #else
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| 113 | # define KHRONOS_APICALL
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| 114 | #endif
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| 115 |
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| 116 | /*-------------------------------------------------------------------------
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| 117 | * Definition of KHRONOS_APIENTRY
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| 118 | *-------------------------------------------------------------------------
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| 119 | * This follows the return type of the function and precedes the function
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| 120 | * name in the function prototype.
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| 121 | */
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| 122 | #if defined(_WIN32) && !defined(_WIN32_WCE) && !defined(KHRONOS_STATIC)
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| 123 | /* Win32 but not WinCE */
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| 124 | # define KHRONOS_APIENTRY __stdcall
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| 125 | #else
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| 126 | # define KHRONOS_APIENTRY
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| 127 | #endif
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| 128 |
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| 129 | /*-------------------------------------------------------------------------
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| 130 | * Definition of KHRONOS_APIATTRIBUTES
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| 131 | *-------------------------------------------------------------------------
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| 132 | * This follows the closing parenthesis of the function prototype arguments.
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| 133 | */
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| 134 | #if defined (__ARMCC_2__)
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| 135 | #define KHRONOS_APIATTRIBUTES __softfp
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| 136 | #else
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| 137 | #define KHRONOS_APIATTRIBUTES
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| 138 | #endif
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| 139 |
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| 140 | /*-------------------------------------------------------------------------
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| 141 | * basic type definitions
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| 142 | *-----------------------------------------------------------------------*/
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| 143 | #if (defined(__STDC_VERSION__) && __STDC_VERSION__ >= 199901L) || defined(__GNUC__) || defined(__SCO__) || defined(__USLC__)
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| 144 |
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| 145 |
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| 146 | /*
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| 147 | * Using <stdint.h>
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| 148 | */
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| 149 | #include <stdint.h>
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| 150 | typedef int32_t khronos_int32_t;
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| 151 | typedef uint32_t khronos_uint32_t;
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| 152 | typedef int64_t khronos_int64_t;
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| 153 | typedef uint64_t khronos_uint64_t;
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| 154 | #define KHRONOS_SUPPORT_INT64 1
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| 155 | #define KHRONOS_SUPPORT_FLOAT 1
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| 156 |
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| 157 | #elif defined(__VMS ) || defined(__sgi)
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| 158 |
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| 159 | /*
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| 160 | * Using <inttypes.h>
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| 161 | */
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| 162 | #include <inttypes.h>
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| 163 | typedef int32_t khronos_int32_t;
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| 164 | typedef uint32_t khronos_uint32_t;
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| 165 | typedef int64_t khronos_int64_t;
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| 166 | typedef uint64_t khronos_uint64_t;
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| 167 | #define KHRONOS_SUPPORT_INT64 1
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| 168 | #define KHRONOS_SUPPORT_FLOAT 1
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| 169 |
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| 170 | #elif defined(_WIN32) && !defined(__SCITECH_SNAP__)
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| 171 |
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| 172 | /*
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| 173 | * Win32
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| 174 | */
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| 175 | typedef __int32 khronos_int32_t;
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| 176 | typedef unsigned __int32 khronos_uint32_t;
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| 177 | typedef __int64 khronos_int64_t;
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| 178 | typedef unsigned __int64 khronos_uint64_t;
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| 179 | #define KHRONOS_SUPPORT_INT64 1
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| 180 | #define KHRONOS_SUPPORT_FLOAT 1
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| 181 |
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| 182 | #elif defined(__sun__) || defined(__digital__)
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| 183 |
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| 184 | /*
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| 185 | * Sun or Digital
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| 186 | */
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| 187 | typedef int khronos_int32_t;
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| 188 | typedef unsigned int khronos_uint32_t;
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| 189 | #if defined(__arch64__) || defined(_LP64)
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| 190 | typedef long int khronos_int64_t;
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| 191 | typedef unsigned long int khronos_uint64_t;
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| 192 | #else
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| 193 | typedef long long int khronos_int64_t;
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| 194 | typedef unsigned long long int khronos_uint64_t;
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| 195 | #endif /* __arch64__ */
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| 196 | #define KHRONOS_SUPPORT_INT64 1
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| 197 | #define KHRONOS_SUPPORT_FLOAT 1
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| 198 |
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| 199 | #elif 0
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| 200 |
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| 201 | /*
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| 202 | * Hypothetical platform with no float or int64 support
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| 203 | */
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| 204 | typedef int khronos_int32_t;
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| 205 | typedef unsigned int khronos_uint32_t;
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| 206 | #define KHRONOS_SUPPORT_INT64 0
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| 207 | #define KHRONOS_SUPPORT_FLOAT 0
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| 208 |
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| 209 | #else
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| 210 |
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| 211 | /*
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| 212 | * Generic fallback
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| 213 | */
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| 214 | #include <stdint.h>
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| 215 | typedef int32_t khronos_int32_t;
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| 216 | typedef uint32_t khronos_uint32_t;
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| 217 | typedef int64_t khronos_int64_t;
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| 218 | typedef uint64_t khronos_uint64_t;
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| 219 | #define KHRONOS_SUPPORT_INT64 1
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| 220 | #define KHRONOS_SUPPORT_FLOAT 1
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| 221 |
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| 222 | #endif
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| 223 |
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| 224 |
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| 225 | /*
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| 226 | * Types that are (so far) the same on all platforms
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| 227 | */
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| 228 | typedef signed char khronos_int8_t;
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| 229 | typedef unsigned char khronos_uint8_t;
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| 230 | typedef signed short int khronos_int16_t;
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| 231 | typedef unsigned short int khronos_uint16_t;
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| 232 |
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| 233 | /*
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| 234 | * Types that differ between LLP64 and LP64 architectures - in LLP64,
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| 235 | * pointers are 64 bits, but 'long' is still 32 bits. Win64 appears
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| 236 | * to be the only LLP64 architecture in current use.
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| 237 | */
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| 238 | #ifdef _WIN64
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| 239 | typedef signed long long int khronos_intptr_t;
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| 240 | typedef unsigned long long int khronos_uintptr_t;
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| 241 | typedef signed long long int khronos_ssize_t;
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| 242 | typedef unsigned long long int khronos_usize_t;
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| 243 | #else
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| 244 | typedef signed long int khronos_intptr_t;
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| 245 | typedef unsigned long int khronos_uintptr_t;
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| 246 | typedef signed long int khronos_ssize_t;
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| 247 | typedef unsigned long int khronos_usize_t;
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| 248 | #endif
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| 249 |
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| 250 | #if KHRONOS_SUPPORT_FLOAT
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| 251 | /*
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| 252 | * Float type
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| 253 | */
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| 254 | typedef float khronos_float_t;
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| 255 | #endif
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| 256 |
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| 257 | #if KHRONOS_SUPPORT_INT64
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| 258 | /* Time types
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| 259 | *
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| 260 | * These types can be used to represent a time interval in nanoseconds or
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| 261 | * an absolute Unadjusted System Time. Unadjusted System Time is the number
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| 262 | * of nanoseconds since some arbitrary system event (e.g. since the last
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| 263 | * time the system booted). The Unadjusted System Time is an unsigned
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| 264 | * 64 bit value that wraps back to 0 every 584 years. Time intervals
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| 265 | * may be either signed or unsigned.
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| 266 | */
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| 267 | typedef khronos_uint64_t khronos_utime_nanoseconds_t;
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| 268 | typedef khronos_int64_t khronos_stime_nanoseconds_t;
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| 269 | #endif
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| 270 |
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| 271 | /*
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| 272 | * Dummy value used to pad enum types to 32 bits.
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| 273 | */
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| 274 | #ifndef KHRONOS_MAX_ENUM
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| 275 | #define KHRONOS_MAX_ENUM 0x7FFFFFFF
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| 276 | #endif
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| 277 |
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| 278 | /*
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| 279 | * Enumerated boolean type
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| 280 | *
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| 281 | * Values other than zero should be considered to be true. Therefore
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| 282 | * comparisons should not be made against KHRONOS_TRUE.
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| 283 | */
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| 284 | typedef enum {
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| 285 | KHRONOS_FALSE = 0,
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| 286 | KHRONOS_TRUE = 1,
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| 287 | KHRONOS_BOOLEAN_ENUM_FORCE_SIZE = KHRONOS_MAX_ENUM
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| 288 | } khronos_boolean_enum_t;
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| 289 |
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| 290 | #endif /* __khrplatform_h_ */
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