1 /* 2 * Copyright © 2013 Intel Corporation 3 * 4 * Permission is hereby granted, free of charge, to any person obtaining a 5 * copy of this software and associated documentation files (the "Software"), 6 * to deal in the Software without restriction, including without limitation 7 * the rights to use, copy, modify, merge, publish, distribute, sublicense, 8 * and/or sell copies of the Software, and to permit persons to whom the 9 * Software is furnished to do so, subject to the following conditions: 10 * 11 * The above copyright notice and this permission notice (including the next 12 * paragraph) shall be included in all copies or substantial portions of the 13 * Software. 14 * 15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 16 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 17 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL 18 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER 19 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING 20 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS 21 * IN THE SOFTWARE. 22 */ 23 24 /** @file gl.h 25 * 26 * Provides an implementation of a GL dispatch layer using either 27 * global function pointers or a hidden vtable. 28 * 29 * You should include `<epoxy/gl.h>` instead of `<GL/gl.h>` and `<GL/glext.h>`. 30 */ 31 32 #ifndef EPOXY_GL_H 33 #define EPOXY_GL_H 34 35 #include "epoxy/common.h" 36 37 #if defined(__gl_h_) || defined(__glext_h_) 38 #error epoxy/gl.h must be included before (or in place of) GL/gl.h 39 #else 40 #define __gl_h_ 41 #define __glext_h_ 42 #endif 43 44 #define KHRONOS_SUPPORT_INT64 1 45 #define KHRONOS_SUPPORT_FLOAT 1 46 #define KHRONOS_APIATTRIBUTES 47 48 #ifndef _WIN32 49 /* APIENTRY and GLAPIENTRY are not used on Linux or Mac. */ 50 #define APIENTRY 51 #define GLAPIENTRY 52 #define EPOXY_CALLSPEC 53 #define GLAPI 54 #define KHRONOS_APIENTRY 55 #define KHRONOS_APICALL 56 57 #else 58 #ifndef APIENTRY 59 #define APIENTRY __stdcall 60 #endif 61 62 #ifndef GLAPIENTRY 63 #define GLAPIENTRY APIENTRY 64 #endif 65 66 #ifndef EPOXY_CALLSPEC 67 #define EPOXY_CALLSPEC __stdcall 68 #endif 69 70 #ifndef GLAPI 71 #define GLAPI extern 72 #endif 73 74 #define KHRONOS_APIENTRY __stdcall 75 #define KHRONOS_APICALL __declspec(dllimport) __stdcall 76 77 #endif /* _WIN32 */ 78 79 #ifndef APIENTRYP 80 #define APIENTRYP APIENTRY * 81 #endif 82 83 #ifndef GLAPIENTRYP 84 #define GLAPIENTRYP GLAPIENTRY * 85 #endif 86 87 EPOXY_BEGIN_DECLS 88 89 #include "epoxy/gl_generated.h" 90 91 EPOXY_PUBLIC bool epoxy_has_gl_extension(const char *extension); 92 EPOXY_PUBLIC bool epoxy_is_desktop_gl(void); 93 EPOXY_PUBLIC int epoxy_gl_version(void); 94 EPOXY_PUBLIC int epoxy_glsl_version(void); 95 96 /* 97 * the type of the stub function that the failure handler must return; 98 * this function will be called on subsequent calls to the same bogus 99 * function name 100 */ 101 typedef void (*epoxy_resolver_stub_t)(void); 102 103 /* the type of the failure handler itself */ 104 typedef epoxy_resolver_stub_t 105 (*epoxy_resolver_failure_handler_t)(const char *name); 106 107 EPOXY_PUBLIC epoxy_resolver_failure_handler_t 108 epoxy_set_resolver_failure_handler(epoxy_resolver_failure_handler_t handler); 109 110 EPOXY_END_DECLS 111 112 #endif /* EPOXY_GL_H */ 113