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(KHRONOS_STATIC) |
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 | |