repositories / deb_xorg-server.git / blame
| Commit | Line | Data |
|---|---|---|
| a09e091a JB |
1 | /* |
| 2 | * File: glthunk.c | |
| 3 | * Purpose: cdecl thunk wrapper library for Win32 stdcall OpenGL library | |
| 4 | * | |
| 5 | * Copyright (c) Jon TURNEY 2009,2013 | |
| 6 | * | |
| 7 | * Permission is hereby granted, free of charge, to any person obtaining a | |
| 8 | * copy of this software and associated documentation files (the "Software"), | |
| 9 | * to deal in the Software without restriction, including without limitation | |
| 10 | * the rights to use, copy, modify, merge, publish, distribute, sublicense, | |
| 11 | * and/or sell copies of the Software, and to permit persons to whom the | |
| 12 | * Software is furnished to do so, subject to the following conditions: | |
| 13 | * | |
| 14 | * The above copyright notice and this permission notice shall be included in | |
| 15 | * all copies or substantial portions of the Software. | |
| 16 | * | |
| 17 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR | |
| 18 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, | |
| 19 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL | |
| 20 | * THE ABOVE LISTED COPYRIGHT HOLDER(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR | |
| 21 | * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, | |
| 22 | * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER | |
| 23 | * DEALINGS IN THE SOFTWARE. | |
| 24 | */ | |
| 25 | ||
| 26 | // define USE_OPENGL32 makes gl.h declare gl*() function prototypes with stdcall linkage, | |
| 27 | // so our generated wrappers will correctly link with the functions in opengl32.dll | |
| 28 | #define USE_OPENGL32 | |
| 29 | ||
| 30 | #ifdef HAVE_XWIN_CONFIG_H | |
| 31 | #include <xwin-config.h> | |
| 32 | #endif | |
| 33 | ||
| 34 | #include <X11/Xwindows.h> | |
| 35 | ||
| 36 | #define GL_GLEXT_LEGACY | |
| 37 | #include <GL/gl.h> | |
| 38 | #undef GL_ARB_imaging | |
| 39 | #undef GL_VERSION_1_3 | |
| 40 | #include <GL/glext.h> | |
| 41 | ||
| 42 | static PROC | |
| 43 | glWinResolveHelper(PROC * cache, const char *symbol) | |
| 44 | { | |
| 45 | PROC proc = NULL; | |
| 46 | ||
| 47 | /* If not yet cached, call wglGetProcAddress */ | |
| 48 | if ((*cache) == NULL) { | |
| 49 | proc = wglGetProcAddress(symbol); | |
| 50 | if (proc == NULL) { | |
| 51 | (*cache) = (PROC) - 1; | |
| 52 | } | |
| 53 | else { | |
| 54 | (*cache) = proc; | |
| 55 | } | |
| 56 | } | |
| 57 | /* Cached wglGetProcAddress failure */ | |
| 58 | else if ((*cache) == (PROC) - 1) { | |
| 59 | proc = 0; | |
| 60 | } | |
| 61 | /* Cached wglGetProcAddress result */ | |
| 62 | else { | |
| 63 | proc = (*cache); | |
| 64 | } | |
| 65 | ||
| 66 | return proc; | |
| 67 | } | |
| 68 | ||
| 69 | #define RESOLVE_RET(proctype, symbol, retval) \ | |
| 70 | static PROC cache = NULL; \ | |
| 71 | __stdcall proctype proc = (proctype)glWinResolveHelper(&cache, symbol); \ | |
| 72 | if (proc == NULL) { \ | |
| 73 | return retval; \ | |
| 74 | } | |
| 75 | ||
| 76 | #define RESOLVE(proctype, symbol) RESOLVE_RET(proctype, symbol,) | |
| 77 | ||
| 78 | #define RESOLVED_PROC(proctype) proc | |
| 79 | ||
| 80 | /* | |
| 81 | Include generated cdecl wrappers for stdcall gl*() functions in opengl32.dll | |
| 82 | ||
| 83 | OpenGL 1.2 and upward is treated as extensions, function address must | |
| 84 | found using wglGetProcAddress(), but also stdcall so still need wrappers... | |
| 85 | */ | |
| 86 | ||
| 87 | #include "generated_gl_thunks.c" |