wgl_ext_api.c (2453B)
1 /* 2 * File: wgl_ext_api.c 3 * Purpose: Wrapper functions for Win32 OpenGL wgl extension functions 4 * 5 * Authors: Jon TURNEY 6 * 7 * Copyright (c) Jon TURNEY 2009 8 * 9 * 10 * Permission is hereby granted, free of charge, to any person obtaining a 11 * copy of this software and associated documentation files (the "Software"), 12 * to deal in the Software without restriction, including without limitation 13 * the rights to use, copy, modify, merge, publish, distribute, sublicense, 14 * and/or sell copies of the Software, and to permit persons to whom the 15 * Software is furnished to do so, subject to the following conditions: 16 * 17 * The above copyright notice and this permission notice shall be included in 18 * all copies or substantial portions of the Software. 19 * 20 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 21 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 22 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL 23 * THE ABOVE LISTED COPYRIGHT HOLDER(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR 24 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, 25 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER 26 * DEALINGS IN THE SOFTWARE. 27 */ 28 29 #ifdef HAVE_XWIN_CONFIG_H 30 #include <xwin-config.h> 31 #endif 32 33 #include <X11/Xwindows.h> 34 #include <GL/gl.h> 35 #include <GL/glext.h> 36 #include <glx/glxserver.h> 37 #include <glx/glxext.h> 38 #include <GL/wglext.h> 39 #include <wgl_ext_api.h> 40 #include "glwindows.h" 41 42 #define RESOLVE_DECL(type) \ 43 static type type##proc = NULL; 44 45 #define PRERESOLVE(type, symbol) \ 46 type##proc = (type)wglGetProcAddress(symbol); 47 48 #define RESOLVE_RET(type, symbol, retval) \ 49 if (type##proc == NULL) { \ 50 ErrorF("wglwrap: Can't resolve \"%s\"\n", symbol); \ 51 __glXErrorCallBack(0); \ 52 return retval; \ 53 } 54 55 #define RESOLVE(procname, symbol) RESOLVE_RET(procname, symbol,) 56 57 #define RESOLVED_PROC(type) type##proc 58 59 /* 60 * Include generated cdecl wrappers for stdcall WGL functions 61 * 62 * There are extensions to the wgl*() API as well; again we call 63 * these functions by using wglGetProcAddress() to get a pointer 64 * to the function, and wrapping it for cdecl/stdcall conversion 65 * 66 * We arrange to resolve the functions up front, as they need a 67 * context to work, as we like to use them to be able to select 68 * a context. Again, this assumption fails badly on multimontor 69 * systems... 70 */ 71 72 #include "generated_wgl_wrappers.ic"