annotate src/video/x11/SDL_x11gl_c.h @ 110:7edee9f0f2cc

SDL GL dynamic loading fix for OpenBSD
author Sam Lantinga <slouken@lokigames.com>
date Sat, 14 Jul 2001 19:11:26 +0000
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children e8157fcb3114
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1 /*
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2 SDL - Simple DirectMedia Layer
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3 Copyright (C) 1997, 1998, 1999, 2000, 2001 Sam Lantinga
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4
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5 This library is free software; you can redistribute it and/or
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6 modify it under the terms of the GNU Library General Public
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7 License as published by the Free Software Foundation; either
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8 version 2 of the License, or (at your option) any later version.
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9
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10 This library is distributed in the hope that it will be useful,
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11 but WITHOUT ANY WARRANTY; without even the implied warranty of
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12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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13 Library General Public License for more details.
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14
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15 You should have received a copy of the GNU Library General Public
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16 License along with this library; if not, write to the Free
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17 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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18
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19 Sam Lantinga
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20 slouken@devolution.com
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21 */
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22
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23 #ifdef SAVE_RCSID
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24 static char rcsid =
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25 "@(#) $Id$";
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26 #endif
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27
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28 #ifdef HAVE_OPENGL
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29 #include <GL/glx.h>
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30 #include <dlfcn.h>
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31 #if defined(__OpenBSD__) && !defined(__ELF__)
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32 #define dlsym(x,y) dlsym(x, "_" y)
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33 #endif
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34 #endif
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35 #include "SDL_sysvideo.h"
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36
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37 struct SDL_PrivateGLData {
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38 int gl_active; /* to stop switching drivers while we have a valid context */
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39
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40 #ifdef HAVE_OPENGL
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41 GLXContext glx_context; /* Current GL context */
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42 XVisualInfo* glx_visualinfo; /* XVisualInfo* returned by glXChooseVisual */
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43
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44 void * (*glXGetProcAddress)(const GLubyte *procName);
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45
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46 XVisualInfo* (*glXChooseVisual)
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47 ( Display* dpy,
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48 int screen,
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49 int* attribList );
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50
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51 GLXContext (*glXCreateContext)
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52 ( Display* dpy,
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53 XVisualInfo* vis,
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54 GLXContext shareList,
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55 Bool direct );
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56
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57 void (*glXDestroyContext)
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58 ( Display* dpy,
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59 GLXContext ctx );
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60
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61 Bool (*glXMakeCurrent)
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62 ( Display* dpy,
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63 GLXDrawable drawable,
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64 GLXContext ctx );
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65
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66 void (*glXSwapBuffers)
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67 ( Display* dpy,
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68 GLXDrawable drawable );
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69
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70 int (*glXGetConfig)
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71 ( Display* dpy,
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72 XVisualInfo* visual_info,
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73 int attrib,
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74 int* value );
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75
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76 void (*glXReleaseBuffersMESA)
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77 ( Display* dpy,
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78 GLXDrawable drawable );
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79
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80 #endif /* HAVE_OPENGL */
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81 };
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82
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83 /* Old variable names */
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84 #define gl_active (this->gl_data->gl_active)
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85 #define glx_context (this->gl_data->glx_context)
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86 #define glx_visualinfo (this->gl_data->glx_visualinfo)
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87
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88 /* OpenGL functions */
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89 extern XVisualInfo *X11_GL_GetVisual(_THIS);
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90 extern int X11_GL_CreateWindow(_THIS, int w, int h);
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91 extern int X11_GL_CreateContext(_THIS);
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92 extern void X11_GL_Shutdown(_THIS);
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93 #ifdef HAVE_OPENGL
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94 extern int X11_GL_MakeCurrent(_THIS);
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95 extern int X11_GL_GetAttribute(_THIS, SDL_GLattr attrib, int* value);
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96 extern void X11_GL_SwapBuffers(_THIS);
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97 extern int X11_GL_LoadLibrary(_THIS, const char* path);
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98 extern void *X11_GL_GetProcAddress(_THIS, const char* proc);
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99 #endif
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100 extern void X11_GL_UnloadLibrary(_THIS);
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101