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312 lines
11 KiB
C++
312 lines
11 KiB
C++
#ifndef __khrplatform_h_
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#define __khrplatform_h_
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/*
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** Copyright (c) 2008-2018 The Khronos Group Inc.
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**
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** Permission is hereby granted, free of charge, to any person obtaining a
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** copy of this software and/or associated documentation files (the
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** "Materials"), to deal in the Materials without restriction, including
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** without limitation the rights to use, copy, modify, merge, publish,
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** distribute, sublicense, and/or sell copies of the Materials, and to
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** permit persons to whom the Materials are furnished to do so, subject to
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** the following conditions:
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**
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** The above copyright notice and this permission notice shall be included
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** in all copies or substantial portions of the Materials.
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**
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** THE MATERIALS ARE PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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** EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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** MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
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** IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
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** CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
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** TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
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** MATERIALS OR THE USE OR OTHER DEALINGS IN THE MATERIALS.
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*/
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/* Khronos platform-specific types and definitions.
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*
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* The master copy of khrplatform.h is maintained in the Khronos EGL
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* Registry repository at https://github.com/KhronosGroup/EGL-Registry
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* The last semantic modification to khrplatform.h was at commit ID:
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* 67a3e0864c2d75ea5287b9f3d2eb74a745936692
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*
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* Adopters may modify this file to suit their platform. Adopters are
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* encouraged to submit platform specific modifications to the Khronos
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* group so that they can be included in future versions of this file.
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* Please submit changes by filing pull requests or issues on
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* the EGL Registry repository linked above.
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*
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*
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* See the Implementer's Guidelines for information about where this file
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* should be located on your system and for more details of its use:
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* http://www.khronos.org/registry/implementers_guide.pdf
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*
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* This file should be included as
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* #include <KHR/khrplatform.h>
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* by Khronos client API header files that use its types and defines.
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*
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* The types in khrplatform.h should only be used to define API-specific types.
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*
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* Types defined in khrplatform.h:
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* khronos_int8_t signed 8 bit
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* khronos_uint8_t unsigned 8 bit
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* khronos_int16_t signed 16 bit
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* khronos_uint16_t unsigned 16 bit
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* khronos_int32_t signed 32 bit
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* khronos_uint32_t unsigned 32 bit
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* khronos_int64_t signed 64 bit
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* khronos_uint64_t unsigned 64 bit
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* khronos_intptr_t signed same number of bits as a pointer
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* khronos_uintptr_t unsigned same number of bits as a pointer
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* khronos_ssize_t signed size
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* khronos_usize_t unsigned size
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* khronos_float_t signed 32 bit floating point
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* khronos_time_ns_t unsigned 64 bit time in nanoseconds
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* khronos_utime_nanoseconds_t unsigned time interval or absolute time in
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* nanoseconds
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* khronos_stime_nanoseconds_t signed time interval in nanoseconds
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* khronos_boolean_enum_t enumerated boolean type. This should
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* only be used as a base type when a client API's boolean type is
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* an enum. Client APIs which use an integer or other type for
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* booleans cannot use this as the base type for their boolean.
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*
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* Tokens defined in khrplatform.h:
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*
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* KHRONOS_FALSE, KHRONOS_TRUE Enumerated boolean false/true values.
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*
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* KHRONOS_SUPPORT_INT64 is 1 if 64 bit integers are supported; otherwise 0.
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* KHRONOS_SUPPORT_FLOAT is 1 if floats are supported; otherwise 0.
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*
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* Calling convention macros defined in this file:
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* KHRONOS_APICALL
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* KHRONOS_APIENTRY
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* KHRONOS_APIATTRIBUTES
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*
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* These may be used in function prototypes as:
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*
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* KHRONOS_APICALL void KHRONOS_APIENTRY funcname(
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* int arg1,
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* int arg2) KHRONOS_APIATTRIBUTES;
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*/
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#if defined(__SCITECH_SNAP__) && !defined(KHRONOS_STATIC)
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# define KHRONOS_STATIC 1
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#endif
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/*-------------------------------------------------------------------------
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* Definition of KHRONOS_APICALL
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*-------------------------------------------------------------------------
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* This precedes the return type of the function in the function prototype.
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*/
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#if defined(KHRONOS_STATIC)
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/* If the preprocessor constant KHRONOS_STATIC is defined, make the
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* header compatible with static linking. */
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# define KHRONOS_APICALL
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#elif defined(_WIN32)
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# define KHRONOS_APICALL __declspec(dllimport)
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#elif defined (__SYMBIAN32__)
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# define KHRONOS_APICALL IMPORT_C
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#elif defined(__ANDROID__)
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# define KHRONOS_APICALL __attribute__((visibility("default")))
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#else
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# define KHRONOS_APICALL
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#endif
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/*-------------------------------------------------------------------------
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* Definition of KHRONOS_APIENTRY
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*-------------------------------------------------------------------------
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* This follows the return type of the function and precedes the function
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* name in the function prototype.
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*/
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#if defined(_WIN32) && !defined(_WIN32_WCE) && !defined(__SCITECH_SNAP__)
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/* Win32 but not WinCE */
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# define KHRONOS_APIENTRY __stdcall
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#else
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# define KHRONOS_APIENTRY
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#endif
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/*-------------------------------------------------------------------------
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* Definition of KHRONOS_APIATTRIBUTES
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*-------------------------------------------------------------------------
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* This follows the closing parenthesis of the function prototype arguments.
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*/
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#if defined (__ARMCC_2__)
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#define KHRONOS_APIATTRIBUTES __softfp
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#else
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#define KHRONOS_APIATTRIBUTES
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#endif
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/*-------------------------------------------------------------------------
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* basic type definitions
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*-----------------------------------------------------------------------*/
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#if (defined(__STDC_VERSION__) && __STDC_VERSION__ >= 199901L) || defined(__GNUC__) || defined(__SCO__) || defined(__USLC__)
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/*
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* Using <stdint.h>
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*/
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#include <stdint.h>
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typedef int32_t khronos_int32_t;
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typedef uint32_t khronos_uint32_t;
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typedef int64_t khronos_int64_t;
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typedef uint64_t khronos_uint64_t;
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#define KHRONOS_SUPPORT_INT64 1
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#define KHRONOS_SUPPORT_FLOAT 1
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/*
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* To support platform where unsigned long cannot be used interchangeably with
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* inptr_t (e.g. CHERI-extended ISAs), we can use the stdint.h intptr_t.
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* Ideally, we could just use (u)intptr_t everywhere, but this could result in
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* ABI breakage if khronos_uintptr_t is changed from unsigned long to
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* unsigned long long or similar (this results in different C++ name mangling).
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* To avoid changes for existing platforms, we restrict usage of intptr_t to
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* platforms where the size of a pointer is larger than the size of long.
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*/
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#if defined(__SIZEOF_LONG__) && defined(__SIZEOF_POINTER__)
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#if __SIZEOF_POINTER__ > __SIZEOF_LONG__
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#define KHRONOS_USE_INTPTR_T
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#endif
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#endif
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#elif defined(__VMS ) || defined(__sgi)
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/*
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* Using <inttypes.h>
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*/
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#include <inttypes.h>
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typedef int32_t khronos_int32_t;
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typedef uint32_t khronos_uint32_t;
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typedef int64_t khronos_int64_t;
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typedef uint64_t khronos_uint64_t;
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#define KHRONOS_SUPPORT_INT64 1
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#define KHRONOS_SUPPORT_FLOAT 1
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#elif defined(_WIN32) && !defined(__SCITECH_SNAP__)
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/*
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* Win32
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*/
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typedef __int32 khronos_int32_t;
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typedef unsigned __int32 khronos_uint32_t;
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typedef __int64 khronos_int64_t;
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typedef unsigned __int64 khronos_uint64_t;
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#define KHRONOS_SUPPORT_INT64 1
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#define KHRONOS_SUPPORT_FLOAT 1
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#elif defined(__sun__) || defined(__digital__)
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/*
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* Sun or Digital
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*/
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typedef int khronos_int32_t;
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typedef unsigned int khronos_uint32_t;
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#if defined(__arch64__) || defined(_LP64)
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typedef long int khronos_int64_t;
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typedef unsigned long int khronos_uint64_t;
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#else
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typedef long long int khronos_int64_t;
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typedef unsigned long long int khronos_uint64_t;
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#endif /* __arch64__ */
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#define KHRONOS_SUPPORT_INT64 1
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#define KHRONOS_SUPPORT_FLOAT 1
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#elif 0
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/*
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* Hypothetical platform with no float or int64 support
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*/
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typedef int khronos_int32_t;
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typedef unsigned int khronos_uint32_t;
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#define KHRONOS_SUPPORT_INT64 0
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#define KHRONOS_SUPPORT_FLOAT 0
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#else
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/*
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* Generic fallback
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*/
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#include <stdint.h>
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typedef int32_t khronos_int32_t;
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typedef uint32_t khronos_uint32_t;
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typedef int64_t khronos_int64_t;
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typedef uint64_t khronos_uint64_t;
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#define KHRONOS_SUPPORT_INT64 1
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#define KHRONOS_SUPPORT_FLOAT 1
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#endif
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/*
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* Types that are (so far) the same on all platforms
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*/
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typedef signed char khronos_int8_t;
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typedef unsigned char khronos_uint8_t;
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typedef signed short int khronos_int16_t;
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typedef unsigned short int khronos_uint16_t;
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/*
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* Types that differ between LLP64 and LP64 architectures - in LLP64,
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* pointers are 64 bits, but 'long' is still 32 bits. Win64 appears
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* to be the only LLP64 architecture in current use.
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*/
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#ifdef KHRONOS_USE_INTPTR_T
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typedef intptr_t khronos_intptr_t;
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typedef uintptr_t khronos_uintptr_t;
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#elif defined(_WIN64)
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typedef signed long long int khronos_intptr_t;
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typedef unsigned long long int khronos_uintptr_t;
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#else
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typedef signed long int khronos_intptr_t;
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typedef unsigned long int khronos_uintptr_t;
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#endif
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#if defined(_WIN64)
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typedef signed long long int khronos_ssize_t;
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typedef unsigned long long int khronos_usize_t;
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#else
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typedef signed long int khronos_ssize_t;
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typedef unsigned long int khronos_usize_t;
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#endif
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#if KHRONOS_SUPPORT_FLOAT
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/*
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* Float type
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*/
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typedef float khronos_float_t;
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#endif
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#if KHRONOS_SUPPORT_INT64
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/* Time types
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*
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* These types can be used to represent a time interval in nanoseconds or
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* an absolute Unadjusted System Time. Unadjusted System Time is the number
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* of nanoseconds since some arbitrary system event (e.g. since the last
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* time the system booted). The Unadjusted System Time is an unsigned
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* 64 bit value that wraps back to 0 every 584 years. Time intervals
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* may be either signed or unsigned.
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*/
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typedef khronos_uint64_t khronos_utime_nanoseconds_t;
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typedef khronos_int64_t khronos_stime_nanoseconds_t;
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#endif
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/*
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* Dummy value used to pad enum types to 32 bits.
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*/
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#ifndef KHRONOS_MAX_ENUM
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#define KHRONOS_MAX_ENUM 0x7FFFFFFF
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#endif
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/*
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* Enumerated boolean type
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*
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* Values other than zero should be considered to be true. Therefore
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* comparisons should not be made against KHRONOS_TRUE.
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*/
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typedef enum {
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KHRONOS_FALSE = 0,
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KHRONOS_TRUE = 1,
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KHRONOS_BOOLEAN_ENUM_FORCE_SIZE = KHRONOS_MAX_ENUM
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} khronos_boolean_enum_t;
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#endif /* __khrplatform_h_ */
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