1 #ifndef __khrplatform_h_
2 #define __khrplatform_h_
3 
4 /*
5 ** Copyright (c) 2008-2018 The Khronos Group Inc.
6 **
7 ** Permission is hereby granted, free of charge, to any person obtaining a
8 ** copy of this software and/or associated documentation files (the
9 ** "Materials"), to deal in the Materials without restriction, including
10 ** without limitation the rights to use, copy, modify, merge, publish,
11 ** distribute, sublicense, and/or sell copies of the Materials, and to
12 ** permit persons to whom the Materials are furnished to do so, subject to
13 ** the following conditions:
14 **
15 ** The above copyright notice and this permission notice shall be included
16 ** in all copies or substantial portions of the Materials.
17 **
18 ** THE MATERIALS ARE PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
19 ** EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
20 ** MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
21 ** IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
22 ** CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
23 ** TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
24 ** MATERIALS OR THE USE OR OTHER DEALINGS IN THE MATERIALS.
25 */
26 
27 /* Khronos platform-specific types and definitions.
28  *
29  * The master copy of khrplatform.h is maintained in the Khronos EGL
30  * Registry repository at https://github.com/KhronosGroup/EGL-Registry
31  * The last semantic modification to khrplatform.h was at commit ID:
32  *      67a3e0864c2d75ea5287b9f3d2eb74a745936692
33  *
34  * Adopters may modify this file to suit their platform. Adopters are
35  * encouraged to submit platform specific modifications to the Khronos
36  * group so that they can be included in future versions of this file.
37  * Please submit changes by filing pull requests or issues on
38  * the EGL Registry repository linked above.
39  *
40  *
41  * See the Implementer's Guidelines for information about where this file
42  * should be located on your system and for more details of its use:
43  *    http://www.khronos.org/registry/implementers_guide.pdf
44  *
45  * This file should be included as
46  *        #include <KHR/khrplatform.h>
47  * by Khronos client API header files that use its types and defines.
48  *
49  * The types in khrplatform.h should only be used to define API-specific types.
50  *
51  * Types defined in khrplatform.h:
52  *    khronos_int8_t              signed   8  bit
53  *    khronos_uint8_t             unsigned 8  bit
54  *    khronos_int16_t             signed   16 bit
55  *    khronos_uint16_t            unsigned 16 bit
56  *    khronos_int32_t             signed   32 bit
57  *    khronos_uint32_t            unsigned 32 bit
58  *    khronos_int64_t             signed   64 bit
59  *    khronos_uint64_t            unsigned 64 bit
60  *    khronos_intptr_t            signed   same number of bits as a pointer
61  *    khronos_uintptr_t           unsigned same number of bits as a pointer
62  *    khronos_ssize_t             signed   size
63  *    khronos_usize_t             unsigned size
64  *    khronos_float_t             signed   32 bit floating point
65  *    khronos_time_ns_t           unsigned 64 bit time in nanoseconds
66  *    khronos_utime_nanoseconds_t unsigned time interval or absolute time in
67  *                                         nanoseconds
68  *    khronos_stime_nanoseconds_t signed time interval in nanoseconds
69  *    khronos_boolean_enum_t      enumerated boolean type. This should
70  *      only be used as a base type when a client API's boolean type is
71  *      an enum. Client APIs which use an integer or other type for
72  *      booleans cannot use this as the base type for their boolean.
73  *
74  * Tokens defined in khrplatform.h:
75  *
76  *    KHRONOS_FALSE, KHRONOS_TRUE Enumerated boolean false/true values.
77  *
78  *    KHRONOS_SUPPORT_INT64 is 1 if 64 bit integers are supported; otherwise 0.
79  *    KHRONOS_SUPPORT_FLOAT is 1 if floats are supported; otherwise 0.
80  *
81  * Calling convention macros defined in this file:
82  *    KHRONOS_APICALL
83  *    KHRONOS_APIENTRY
84  *    KHRONOS_APIATTRIBUTES
85  *
86  * These may be used in function prototypes as:
87  *
88  *      KHRONOS_APICALL void KHRONOS_APIENTRY funcname(
89  *                                  int arg1,
90  *                                  int arg2) KHRONOS_APIATTRIBUTES;
91  */
92 
93 #if defined(__SCITECH_SNAP__) && !defined(KHRONOS_STATIC)
94 #   define KHRONOS_STATIC 1
95 #endif
96 
97 /*-------------------------------------------------------------------------
98  * Definition of KHRONOS_APICALL
99  *-------------------------------------------------------------------------
100  * This precedes the return type of the function in the function prototype.
101  */
102 #if defined(KHRONOS_STATIC)
103     /* If the preprocessor constant KHRONOS_STATIC is defined, make the
104      * header compatible with static linking. */
105 #   define KHRONOS_APICALL
106 #elif defined(_WIN32)
107 #   define KHRONOS_APICALL __declspec(dllimport)
108 #elif defined (__SYMBIAN32__)
109 #   define KHRONOS_APICALL IMPORT_C
110 #elif defined(__ANDROID__)
111 #   define KHRONOS_APICALL __attribute__((visibility("default")))
112 #else
113 #   define KHRONOS_APICALL
114 #endif
115 
116 /*-------------------------------------------------------------------------
117  * Definition of KHRONOS_APIENTRY
118  *-------------------------------------------------------------------------
119  * This follows the return type of the function  and precedes the function
120  * name in the function prototype.
121  */
122 #if defined(_WIN32) && !defined(_WIN32_WCE) && !defined(__SCITECH_SNAP__)
123     /* Win32 but not WinCE */
124 #   define KHRONOS_APIENTRY __stdcall
125 #else
126 #   define KHRONOS_APIENTRY
127 #endif
128 
129 /*-------------------------------------------------------------------------
130  * Definition of KHRONOS_APIATTRIBUTES
131  *-------------------------------------------------------------------------
132  * This follows the closing parenthesis of the function prototype arguments.
133  */
134 #if defined (__ARMCC_2__)
135 #define KHRONOS_APIATTRIBUTES __softfp
136 #else
137 #define KHRONOS_APIATTRIBUTES
138 #endif
139 
140 /*-------------------------------------------------------------------------
141  * basic type definitions
142  *-----------------------------------------------------------------------*/
143 #if (defined(__STDC_VERSION__) && __STDC_VERSION__ >= 199901L) || defined(__GNUC__) || defined(__SCO__) || defined(__USLC__)
144 
145 
146 /*
147  * Using <stdint.h>
148  */
149 #include <stdint.h>
150 typedef int32_t                 khronos_int32_t;
151 typedef uint32_t                khronos_uint32_t;
152 typedef int64_t                 khronos_int64_t;
153 typedef uint64_t                khronos_uint64_t;
154 #define KHRONOS_SUPPORT_INT64   1
155 #define KHRONOS_SUPPORT_FLOAT   1
156 
157 #elif defined(__VMS ) || defined(__sgi)
158 
159 /*
160  * Using <inttypes.h>
161  */
162 #include <inttypes.h>
163 typedef int32_t                 khronos_int32_t;
164 typedef uint32_t                khronos_uint32_t;
165 typedef int64_t                 khronos_int64_t;
166 typedef uint64_t                khronos_uint64_t;
167 #define KHRONOS_SUPPORT_INT64   1
168 #define KHRONOS_SUPPORT_FLOAT   1
169 
170 #elif defined(_WIN32) && !defined(__SCITECH_SNAP__)
171 
172 /*
173  * Win32
174  */
175 typedef __int32                 khronos_int32_t;
176 typedef unsigned __int32        khronos_uint32_t;
177 typedef __int64                 khronos_int64_t;
178 typedef unsigned __int64        khronos_uint64_t;
179 #define KHRONOS_SUPPORT_INT64   1
180 #define KHRONOS_SUPPORT_FLOAT   1
181 
182 #elif defined(__sun__) || defined(__digital__)
183 
184 /*
185  * Sun or Digital
186  */
187 typedef int                     khronos_int32_t;
188 typedef unsigned int            khronos_uint32_t;
189 #if defined(__arch64__) || defined(_LP64)
190 typedef long int                khronos_int64_t;
191 typedef unsigned long int       khronos_uint64_t;
192 #else
193 typedef long long int           khronos_int64_t;
194 typedef unsigned long long int  khronos_uint64_t;
195 #endif /* __arch64__ */
196 #define KHRONOS_SUPPORT_INT64   1
197 #define KHRONOS_SUPPORT_FLOAT   1
198 
199 #elif 0
200 
201 /*
202  * Hypothetical platform with no float or int64 support
203  */
204 typedef int                     khronos_int32_t;
205 typedef unsigned int            khronos_uint32_t;
206 #define KHRONOS_SUPPORT_INT64   0
207 #define KHRONOS_SUPPORT_FLOAT   0
208 
209 #else
210 
211 /*
212  * Generic fallback
213  */
214 #include <stdint.h>
215 typedef int32_t                 khronos_int32_t;
216 typedef uint32_t                khronos_uint32_t;
217 typedef int64_t                 khronos_int64_t;
218 typedef uint64_t                khronos_uint64_t;
219 #define KHRONOS_SUPPORT_INT64   1
220 #define KHRONOS_SUPPORT_FLOAT   1
221 
222 #endif
223 
224 
225 /*
226  * Types that are (so far) the same on all platforms
227  */
228 typedef signed   char          khronos_int8_t;
229 typedef unsigned char          khronos_uint8_t;
230 typedef signed   short int     khronos_int16_t;
231 typedef unsigned short int     khronos_uint16_t;
232 
233 /*
234  * Types that differ between LLP64 and LP64 architectures - in LLP64,
235  * pointers are 64 bits, but 'long' is still 32 bits. Win64 appears
236  * to be the only LLP64 architecture in current use.
237  */
238 #ifdef _WIN64
239 typedef signed   long long int khronos_intptr_t;
240 typedef unsigned long long int khronos_uintptr_t;
241 typedef signed   long long int khronos_ssize_t;
242 typedef unsigned long long int khronos_usize_t;
243 #else
244 typedef signed   long  int     khronos_intptr_t;
245 typedef unsigned long  int     khronos_uintptr_t;
246 typedef signed   long  int     khronos_ssize_t;
247 typedef unsigned long  int     khronos_usize_t;
248 #endif
249 
250 #if KHRONOS_SUPPORT_FLOAT
251 /*
252  * Float type
253  */
254 typedef          float         khronos_float_t;
255 #endif
256 
257 #if KHRONOS_SUPPORT_INT64
258 /* Time types
259  *
260  * These types can be used to represent a time interval in nanoseconds or
261  * an absolute Unadjusted System Time.  Unadjusted System Time is the number
262  * of nanoseconds since some arbitrary system event (e.g. since the last
263  * time the system booted).  The Unadjusted System Time is an unsigned
264  * 64 bit value that wraps back to 0 every 584 years.  Time intervals
265  * may be either signed or unsigned.
266  */
267 typedef khronos_uint64_t       khronos_utime_nanoseconds_t;
268 typedef khronos_int64_t        khronos_stime_nanoseconds_t;
269 #endif
270 
271 /*
272  * Dummy value used to pad enum types to 32 bits.
273  */
274 #ifndef KHRONOS_MAX_ENUM
275 #define KHRONOS_MAX_ENUM 0x7FFFFFFF
276 #endif
277 
278 /*
279  * Enumerated boolean type
280  *
281  * Values other than zero should be considered to be true.  Therefore
282  * comparisons should not be made against KHRONOS_TRUE.
283  */
284 typedef enum {
285     KHRONOS_FALSE = 0,
286     KHRONOS_TRUE  = 1,
287     KHRONOS_BOOLEAN_ENUM_FORCE_SIZE = KHRONOS_MAX_ENUM
288 } khronos_boolean_enum_t;
289 
290 #endif /* __khrplatform_h_ */
291