Mercurial > sdl-ios-xcode
annotate src/video/x11/SDL_x11gl.c @ 989:475166d13b44
Factorize OSMesa OpenGL code for Atari drivers
| author | Patrice Mandin <patmandin@gmail.com> |
|---|---|
| date | Thu, 25 Nov 2004 15:47:49 +0000 |
| parents | f7a8b0ca2ae3 |
| children | 86885b40a53b |
| rev | line source |
|---|---|
| 0 | 1 /* |
| 2 SDL - Simple DirectMedia Layer | |
|
769
b8d311d90021
Updated copyright information for 2004 (Happy New Year!)
Sam Lantinga <slouken@libsdl.org>
parents:
667
diff
changeset
|
3 Copyright (C) 1997-2004 Sam Lantinga |
| 0 | 4 |
| 5 This library is free software; you can redistribute it and/or | |
| 6 modify it under the terms of the GNU Library General Public | |
| 7 License as published by the Free Software Foundation; either | |
| 8 version 2 of the License, or (at your option) any later version. | |
| 9 | |
| 10 This library is distributed in the hope that it will be useful, | |
| 11 but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
| 13 Library General Public License for more details. | |
| 14 | |
| 15 You should have received a copy of the GNU Library General Public | |
| 16 License along with this library; if not, write to the Free | |
| 17 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | |
| 18 | |
| 19 Sam Lantinga | |
|
252
e8157fcb3114
Updated the source with the correct e-mail address
Sam Lantinga <slouken@libsdl.org>
parents:
180
diff
changeset
|
20 slouken@libsdl.org |
| 0 | 21 */ |
| 22 | |
| 23 #ifdef SAVE_RCSID | |
| 24 static char rcsid = | |
| 25 "@(#) $Id$"; | |
| 26 #endif | |
| 27 | |
| 28 #include <stdlib.h> /* For getenv() prototype */ | |
| 29 #include <string.h> | |
| 30 | |
| 31 #include "SDL_events_c.h" | |
| 32 #include "SDL_error.h" | |
| 33 #include "SDL_x11video.h" | |
| 34 #include "SDL_x11dga_c.h" | |
| 35 #include "SDL_x11gl_c.h" | |
| 36 | |
|
862
f7a8b0ca2ae3
IRIX doesn't have a GL library versioning system
Sam Lantinga <slouken@libsdl.org>
parents:
769
diff
changeset
|
37 #if defined(sgi) |
|
f7a8b0ca2ae3
IRIX doesn't have a GL library versioning system
Sam Lantinga <slouken@libsdl.org>
parents:
769
diff
changeset
|
38 /* IRIX doesn't have a GL library versioning system */ |
|
f7a8b0ca2ae3
IRIX doesn't have a GL library versioning system
Sam Lantinga <slouken@libsdl.org>
parents:
769
diff
changeset
|
39 #define DEFAULT_OPENGL "libGL.so" |
|
f7a8b0ca2ae3
IRIX doesn't have a GL library versioning system
Sam Lantinga <slouken@libsdl.org>
parents:
769
diff
changeset
|
40 #else |
| 0 | 41 #define DEFAULT_OPENGL "libGL.so.1" |
|
862
f7a8b0ca2ae3
IRIX doesn't have a GL library versioning system
Sam Lantinga <slouken@libsdl.org>
parents:
769
diff
changeset
|
42 #endif |
| 0 | 43 |
|
667
adbed8d7a991
*** empty log message ***
Sam Lantinga <slouken@libsdl.org>
parents:
656
diff
changeset
|
44 #ifndef GLX_ARB_multisample |
|
adbed8d7a991
*** empty log message ***
Sam Lantinga <slouken@libsdl.org>
parents:
656
diff
changeset
|
45 #define GLX_ARB_multisample |
|
adbed8d7a991
*** empty log message ***
Sam Lantinga <slouken@libsdl.org>
parents:
656
diff
changeset
|
46 #define GLX_SAMPLE_BUFFERS_ARB 100000 |
|
adbed8d7a991
*** empty log message ***
Sam Lantinga <slouken@libsdl.org>
parents:
656
diff
changeset
|
47 #define GLX_SAMPLES_ARB 100001 |
|
adbed8d7a991
*** empty log message ***
Sam Lantinga <slouken@libsdl.org>
parents:
656
diff
changeset
|
48 #endif |
|
adbed8d7a991
*** empty log message ***
Sam Lantinga <slouken@libsdl.org>
parents:
656
diff
changeset
|
49 |
| 0 | 50 /* return the preferred visual to use for openGL graphics */ |
| 51 XVisualInfo *X11_GL_GetVisual(_THIS) | |
| 52 { | |
| 53 #ifdef HAVE_OPENGL | |
| 54 /* 64 seems nice. */ | |
| 55 int attribs[64]; | |
| 56 int i; | |
| 57 | |
| 58 /* load the gl driver from a default path */ | |
| 59 if ( ! this->gl_config.driver_loaded ) { | |
| 60 /* no driver has been loaded, use default (ourselves) */ | |
| 61 if ( X11_GL_LoadLibrary(this, NULL) < 0 ) { | |
| 62 return NULL; | |
| 63 } | |
| 64 } | |
| 65 | |
| 66 /* See if we already have a window which we must use */ | |
| 67 if ( SDL_windowid ) { | |
| 68 XWindowAttributes a; | |
| 69 XVisualInfo vi_in; | |
| 70 int out_count; | |
| 71 | |
| 72 XGetWindowAttributes(SDL_Display, SDL_Window, &a); | |
| 73 vi_in.screen = SDL_Screen; | |
| 74 vi_in.visualid = XVisualIDFromVisual(a.visual); | |
| 75 glx_visualinfo = XGetVisualInfo(SDL_Display, | |
| 76 VisualScreenMask|VisualIDMask, &vi_in, &out_count); | |
| 77 return glx_visualinfo; | |
| 78 } | |
| 79 | |
| 80 /* Setup our GLX attributes according to the gl_config. */ | |
|
450
8a43e0cbf02f
Added SDL_GL_STEREO for stereoscopic OpenGL contexts
Sam Lantinga <slouken@libsdl.org>
parents:
297
diff
changeset
|
81 i = 0; |
|
8a43e0cbf02f
Added SDL_GL_STEREO for stereoscopic OpenGL contexts
Sam Lantinga <slouken@libsdl.org>
parents:
297
diff
changeset
|
82 attribs[i++] = GLX_RGBA; |
| 0 | 83 attribs[i++] = GLX_RED_SIZE; |
| 84 attribs[i++] = this->gl_config.red_size; | |
| 85 attribs[i++] = GLX_GREEN_SIZE; | |
| 86 attribs[i++] = this->gl_config.green_size; | |
| 87 attribs[i++] = GLX_BLUE_SIZE; | |
| 88 attribs[i++] = this->gl_config.blue_size; | |
| 89 | |
| 90 if( this->gl_config.alpha_size ) { | |
| 91 attribs[i++] = GLX_ALPHA_SIZE; | |
| 92 attribs[i++] = this->gl_config.alpha_size; | |
| 93 } | |
| 94 | |
| 95 if( this->gl_config.buffer_size ) { | |
|
450
8a43e0cbf02f
Added SDL_GL_STEREO for stereoscopic OpenGL contexts
Sam Lantinga <slouken@libsdl.org>
parents:
297
diff
changeset
|
96 attribs[i++] = GLX_BUFFER_SIZE; |
|
8a43e0cbf02f
Added SDL_GL_STEREO for stereoscopic OpenGL contexts
Sam Lantinga <slouken@libsdl.org>
parents:
297
diff
changeset
|
97 attribs[i++] = this->gl_config.buffer_size; |
| 0 | 98 } |
| 99 | |
| 100 if( this->gl_config.double_buffer ) { | |
| 101 attribs[i++] = GLX_DOUBLEBUFFER; | |
| 102 } | |
| 103 | |
| 104 attribs[i++] = GLX_DEPTH_SIZE; | |
| 105 attribs[i++] = this->gl_config.depth_size; | |
| 106 | |
| 107 if( this->gl_config.stencil_size ) { | |
| 108 attribs[i++] = GLX_STENCIL_SIZE; | |
| 109 attribs[i++] = this->gl_config.stencil_size; | |
| 110 } | |
| 111 | |
| 112 if( this->gl_config.accum_red_size ) { | |
|
450
8a43e0cbf02f
Added SDL_GL_STEREO for stereoscopic OpenGL contexts
Sam Lantinga <slouken@libsdl.org>
parents:
297
diff
changeset
|
113 attribs[i++] = GLX_ACCUM_RED_SIZE; |
| 0 | 114 attribs[i++] = this->gl_config.accum_red_size; |
| 115 } | |
| 116 | |
| 117 if( this->gl_config.accum_green_size ) { | |
|
450
8a43e0cbf02f
Added SDL_GL_STEREO for stereoscopic OpenGL contexts
Sam Lantinga <slouken@libsdl.org>
parents:
297
diff
changeset
|
118 attribs[i++] = GLX_ACCUM_GREEN_SIZE; |
| 0 | 119 attribs[i++] = this->gl_config.accum_green_size; |
| 120 } | |
| 121 | |
| 122 if( this->gl_config.accum_blue_size ) { | |
|
450
8a43e0cbf02f
Added SDL_GL_STEREO for stereoscopic OpenGL contexts
Sam Lantinga <slouken@libsdl.org>
parents:
297
diff
changeset
|
123 attribs[i++] = GLX_ACCUM_BLUE_SIZE; |
| 0 | 124 attribs[i++] = this->gl_config.accum_blue_size; |
| 125 } | |
| 126 | |
| 127 if( this->gl_config.accum_alpha_size ) { | |
|
450
8a43e0cbf02f
Added SDL_GL_STEREO for stereoscopic OpenGL contexts
Sam Lantinga <slouken@libsdl.org>
parents:
297
diff
changeset
|
128 attribs[i++] = GLX_ACCUM_ALPHA_SIZE; |
| 0 | 129 attribs[i++] = this->gl_config.accum_alpha_size; |
| 130 } | |
| 131 | |
|
450
8a43e0cbf02f
Added SDL_GL_STEREO for stereoscopic OpenGL contexts
Sam Lantinga <slouken@libsdl.org>
parents:
297
diff
changeset
|
132 if( this->gl_config.stereo ) { |
|
8a43e0cbf02f
Added SDL_GL_STEREO for stereoscopic OpenGL contexts
Sam Lantinga <slouken@libsdl.org>
parents:
297
diff
changeset
|
133 attribs[i++] = GLX_STEREO; |
|
8a43e0cbf02f
Added SDL_GL_STEREO for stereoscopic OpenGL contexts
Sam Lantinga <slouken@libsdl.org>
parents:
297
diff
changeset
|
134 attribs[i++] = this->gl_config.stereo; |
|
8a43e0cbf02f
Added SDL_GL_STEREO for stereoscopic OpenGL contexts
Sam Lantinga <slouken@libsdl.org>
parents:
297
diff
changeset
|
135 } |
|
655
9c42ee1b7d77
Date: Thu, 24 Apr 2003 15:13:47 -0400
Sam Lantinga <slouken@libsdl.org>
parents:
646
diff
changeset
|
136 |
|
656
864e2d2a9a55
Merged in Ryan's multisample code for MacOS, and changed the constants to match.
Sam Lantinga <slouken@libsdl.org>
parents:
655
diff
changeset
|
137 if( this->gl_config.multisamplebuffers ) { |
|
655
9c42ee1b7d77
Date: Thu, 24 Apr 2003 15:13:47 -0400
Sam Lantinga <slouken@libsdl.org>
parents:
646
diff
changeset
|
138 attribs[i++] = GLX_SAMPLE_BUFFERS_ARB; |
|
656
864e2d2a9a55
Merged in Ryan's multisample code for MacOS, and changed the constants to match.
Sam Lantinga <slouken@libsdl.org>
parents:
655
diff
changeset
|
139 attribs[i++] = this->gl_config.multisamplebuffers; |
|
655
9c42ee1b7d77
Date: Thu, 24 Apr 2003 15:13:47 -0400
Sam Lantinga <slouken@libsdl.org>
parents:
646
diff
changeset
|
140 } |
|
9c42ee1b7d77
Date: Thu, 24 Apr 2003 15:13:47 -0400
Sam Lantinga <slouken@libsdl.org>
parents:
646
diff
changeset
|
141 |
|
656
864e2d2a9a55
Merged in Ryan's multisample code for MacOS, and changed the constants to match.
Sam Lantinga <slouken@libsdl.org>
parents:
655
diff
changeset
|
142 if( this->gl_config.multisamplesamples ) { |
|
655
9c42ee1b7d77
Date: Thu, 24 Apr 2003 15:13:47 -0400
Sam Lantinga <slouken@libsdl.org>
parents:
646
diff
changeset
|
143 attribs[i++] = GLX_SAMPLES_ARB; |
|
656
864e2d2a9a55
Merged in Ryan's multisample code for MacOS, and changed the constants to match.
Sam Lantinga <slouken@libsdl.org>
parents:
655
diff
changeset
|
144 attribs[i++] = this->gl_config.multisamplesamples; |
|
655
9c42ee1b7d77
Date: Thu, 24 Apr 2003 15:13:47 -0400
Sam Lantinga <slouken@libsdl.org>
parents:
646
diff
changeset
|
145 } |
|
450
8a43e0cbf02f
Added SDL_GL_STEREO for stereoscopic OpenGL contexts
Sam Lantinga <slouken@libsdl.org>
parents:
297
diff
changeset
|
146 |
| 0 | 147 #ifdef GLX_DIRECT_COLOR /* Try for a DirectColor visual for gamma support */ |
| 148 attribs[i++] = GLX_X_VISUAL_TYPE; | |
| 149 attribs[i++] = GLX_DIRECT_COLOR; | |
| 150 #endif | |
| 151 attribs[i++] = None; | |
| 152 | |
| 153 glx_visualinfo = this->gl_data->glXChooseVisual(GFX_Display, | |
| 154 SDL_Screen, attribs); | |
| 155 #ifdef GLX_DIRECT_COLOR | |
| 156 if( !glx_visualinfo ) { /* No DirectColor visual? Try again.. */ | |
| 157 attribs[i-3] = None; | |
| 158 glx_visualinfo = this->gl_data->glXChooseVisual(GFX_Display, | |
| 159 SDL_Screen, attribs); | |
| 160 } | |
| 161 #endif | |
| 162 if( !glx_visualinfo ) { | |
| 163 SDL_SetError( "Couldn't find matching GLX visual"); | |
| 164 return NULL; | |
| 165 } | |
| 166 return glx_visualinfo; | |
| 167 #else | |
| 168 SDL_SetError("X11 driver not configured with OpenGL"); | |
| 169 return NULL; | |
| 170 #endif | |
| 171 } | |
| 172 | |
| 173 int X11_GL_CreateWindow(_THIS, int w, int h) | |
| 174 { | |
| 175 int retval; | |
| 176 #ifdef HAVE_OPENGL | |
| 177 XSetWindowAttributes attributes; | |
| 178 unsigned long mask; | |
| 179 unsigned long black; | |
| 180 | |
| 181 black = (glx_visualinfo->visual == DefaultVisual(SDL_Display, | |
| 182 SDL_Screen)) | |
| 183 ? BlackPixel(SDL_Display, SDL_Screen) : 0; | |
| 184 attributes.background_pixel = black; | |
| 185 attributes.border_pixel = black; | |
| 186 attributes.colormap = SDL_XColorMap; | |
| 187 mask = CWBackPixel | CWBorderPixel | CWColormap; | |
| 188 | |
| 189 SDL_Window = XCreateWindow(SDL_Display, WMwindow, | |
| 190 0, 0, w, h, 0, glx_visualinfo->depth, | |
| 191 InputOutput, glx_visualinfo->visual, | |
| 192 mask, &attributes); | |
| 193 if ( !SDL_Window ) { | |
| 194 SDL_SetError("Could not create window"); | |
| 195 return -1; | |
| 196 } | |
| 197 retval = 0; | |
| 198 #else | |
| 199 SDL_SetError("X11 driver not configured with OpenGL"); | |
| 200 retval = -1; | |
| 201 #endif | |
| 202 return(retval); | |
| 203 } | |
| 204 | |
| 205 int X11_GL_CreateContext(_THIS) | |
| 206 { | |
| 207 int retval; | |
| 208 #ifdef HAVE_OPENGL | |
| 209 /* We do this to create a clean separation between X and GLX errors. */ | |
| 210 XSync( SDL_Display, False ); | |
| 211 glx_context = this->gl_data->glXCreateContext(GFX_Display, | |
| 212 glx_visualinfo, NULL, True); | |
| 213 XSync( GFX_Display, False ); | |
| 214 | |
| 215 if (glx_context == NULL) { | |
| 216 SDL_SetError("Could not create GL context"); | |
| 217 return -1; | |
| 218 } | |
| 219 | |
| 220 gl_active = 1; | |
| 221 #else | |
| 222 SDL_SetError("X11 driver not configured with OpenGL"); | |
| 223 #endif | |
| 224 if ( gl_active ) { | |
| 225 retval = 0; | |
| 226 } else { | |
| 227 retval = -1; | |
| 228 } | |
| 229 return(retval); | |
| 230 } | |
| 231 | |
| 232 void X11_GL_Shutdown(_THIS) | |
| 233 { | |
| 234 #ifdef HAVE_OPENGL | |
| 235 /* Clean up OpenGL */ | |
| 236 if( glx_context ) { | |
| 237 this->gl_data->glXMakeCurrent(GFX_Display, None, NULL); | |
| 238 | |
| 239 if (glx_context != NULL) | |
| 240 this->gl_data->glXDestroyContext(GFX_Display, glx_context); | |
| 241 | |
| 242 if( this->gl_data->glXReleaseBuffersMESA ) { | |
| 243 this->gl_data->glXReleaseBuffersMESA(GFX_Display,SDL_Window); | |
| 244 } | |
| 245 glx_context = NULL; | |
| 246 } | |
| 247 gl_active = 0; | |
| 248 #endif /* HAVE_OPENGL */ | |
| 249 } | |
| 250 | |
| 251 #ifdef HAVE_OPENGL | |
| 252 | |
|
655
9c42ee1b7d77
Date: Thu, 24 Apr 2003 15:13:47 -0400
Sam Lantinga <slouken@libsdl.org>
parents:
646
diff
changeset
|
253 static int ExtensionSupported(const char *extension) |
|
638
b0108e9dea53
Date: Sun, 11 May 2003 19:59:06 +0300
Sam Lantinga <slouken@libsdl.org>
parents:
566
diff
changeset
|
254 { |
|
b0108e9dea53
Date: Sun, 11 May 2003 19:59:06 +0300
Sam Lantinga <slouken@libsdl.org>
parents:
566
diff
changeset
|
255 const GLubyte *extensions = NULL; |
|
b0108e9dea53
Date: Sun, 11 May 2003 19:59:06 +0300
Sam Lantinga <slouken@libsdl.org>
parents:
566
diff
changeset
|
256 const GLubyte *start; |
|
b0108e9dea53
Date: Sun, 11 May 2003 19:59:06 +0300
Sam Lantinga <slouken@libsdl.org>
parents:
566
diff
changeset
|
257 GLubyte *where, *terminator; |
|
b0108e9dea53
Date: Sun, 11 May 2003 19:59:06 +0300
Sam Lantinga <slouken@libsdl.org>
parents:
566
diff
changeset
|
258 |
|
b0108e9dea53
Date: Sun, 11 May 2003 19:59:06 +0300
Sam Lantinga <slouken@libsdl.org>
parents:
566
diff
changeset
|
259 /* Extension names should not have spaces. */ |
|
b0108e9dea53
Date: Sun, 11 May 2003 19:59:06 +0300
Sam Lantinga <slouken@libsdl.org>
parents:
566
diff
changeset
|
260 where = (GLubyte *) strchr(extension, ' '); |
|
b0108e9dea53
Date: Sun, 11 May 2003 19:59:06 +0300
Sam Lantinga <slouken@libsdl.org>
parents:
566
diff
changeset
|
261 if (where || *extension == '\0') |
|
b0108e9dea53
Date: Sun, 11 May 2003 19:59:06 +0300
Sam Lantinga <slouken@libsdl.org>
parents:
566
diff
changeset
|
262 return 0; |
|
b0108e9dea53
Date: Sun, 11 May 2003 19:59:06 +0300
Sam Lantinga <slouken@libsdl.org>
parents:
566
diff
changeset
|
263 |
|
643
564716cfb502
Removed direct dependency on OpenGL (call current_video->glGetString() instead
Ryan C. Gordon <icculus@icculus.org>
parents:
638
diff
changeset
|
264 extensions = current_video->glGetString(GL_EXTENSIONS); |
|
638
b0108e9dea53
Date: Sun, 11 May 2003 19:59:06 +0300
Sam Lantinga <slouken@libsdl.org>
parents:
566
diff
changeset
|
265 /* It takes a bit of care to be fool-proof about parsing the |
|
b0108e9dea53
Date: Sun, 11 May 2003 19:59:06 +0300
Sam Lantinga <slouken@libsdl.org>
parents:
566
diff
changeset
|
266 * OpenGL extensions string. Don't be fooled by sub-strings, |
|
b0108e9dea53
Date: Sun, 11 May 2003 19:59:06 +0300
Sam Lantinga <slouken@libsdl.org>
parents:
566
diff
changeset
|
267 * etc. */ |
|
b0108e9dea53
Date: Sun, 11 May 2003 19:59:06 +0300
Sam Lantinga <slouken@libsdl.org>
parents:
566
diff
changeset
|
268 |
|
b0108e9dea53
Date: Sun, 11 May 2003 19:59:06 +0300
Sam Lantinga <slouken@libsdl.org>
parents:
566
diff
changeset
|
269 start = extensions; |
|
b0108e9dea53
Date: Sun, 11 May 2003 19:59:06 +0300
Sam Lantinga <slouken@libsdl.org>
parents:
566
diff
changeset
|
270 |
|
b0108e9dea53
Date: Sun, 11 May 2003 19:59:06 +0300
Sam Lantinga <slouken@libsdl.org>
parents:
566
diff
changeset
|
271 for (;;) |
|
b0108e9dea53
Date: Sun, 11 May 2003 19:59:06 +0300
Sam Lantinga <slouken@libsdl.org>
parents:
566
diff
changeset
|
272 { |
|
b0108e9dea53
Date: Sun, 11 May 2003 19:59:06 +0300
Sam Lantinga <slouken@libsdl.org>
parents:
566
diff
changeset
|
273 where = (GLubyte *) strstr((const char *) start, extension); |
|
b0108e9dea53
Date: Sun, 11 May 2003 19:59:06 +0300
Sam Lantinga <slouken@libsdl.org>
parents:
566
diff
changeset
|
274 if (!where) break; |
|
b0108e9dea53
Date: Sun, 11 May 2003 19:59:06 +0300
Sam Lantinga <slouken@libsdl.org>
parents:
566
diff
changeset
|
275 |
|
b0108e9dea53
Date: Sun, 11 May 2003 19:59:06 +0300
Sam Lantinga <slouken@libsdl.org>
parents:
566
diff
changeset
|
276 terminator = where + strlen(extension); |
|
b0108e9dea53
Date: Sun, 11 May 2003 19:59:06 +0300
Sam Lantinga <slouken@libsdl.org>
parents:
566
diff
changeset
|
277 if (where == start || *(where - 1) == ' ') |
|
b0108e9dea53
Date: Sun, 11 May 2003 19:59:06 +0300
Sam Lantinga <slouken@libsdl.org>
parents:
566
diff
changeset
|
278 if (*terminator == ' ' || *terminator == '\0') return 1; |
|
b0108e9dea53
Date: Sun, 11 May 2003 19:59:06 +0300
Sam Lantinga <slouken@libsdl.org>
parents:
566
diff
changeset
|
279 |
|
b0108e9dea53
Date: Sun, 11 May 2003 19:59:06 +0300
Sam Lantinga <slouken@libsdl.org>
parents:
566
diff
changeset
|
280 start = terminator; |
|
b0108e9dea53
Date: Sun, 11 May 2003 19:59:06 +0300
Sam Lantinga <slouken@libsdl.org>
parents:
566
diff
changeset
|
281 } |
|
b0108e9dea53
Date: Sun, 11 May 2003 19:59:06 +0300
Sam Lantinga <slouken@libsdl.org>
parents:
566
diff
changeset
|
282 |
|
b0108e9dea53
Date: Sun, 11 May 2003 19:59:06 +0300
Sam Lantinga <slouken@libsdl.org>
parents:
566
diff
changeset
|
283 return 0; |
|
b0108e9dea53
Date: Sun, 11 May 2003 19:59:06 +0300
Sam Lantinga <slouken@libsdl.org>
parents:
566
diff
changeset
|
284 } |
|
b0108e9dea53
Date: Sun, 11 May 2003 19:59:06 +0300
Sam Lantinga <slouken@libsdl.org>
parents:
566
diff
changeset
|
285 |
| 0 | 286 /* Make the current context active */ |
| 287 int X11_GL_MakeCurrent(_THIS) | |
| 288 { | |
| 289 int retval; | |
|
638
b0108e9dea53
Date: Sun, 11 May 2003 19:59:06 +0300
Sam Lantinga <slouken@libsdl.org>
parents:
566
diff
changeset
|
290 |
| 0 | 291 retval = 0; |
| 292 if ( ! this->gl_data->glXMakeCurrent(GFX_Display, | |
| 293 SDL_Window, glx_context) ) { | |
| 294 SDL_SetError("Unable to make GL context current"); | |
| 295 retval = -1; | |
| 296 } | |
| 297 XSync( GFX_Display, False ); | |
| 298 | |
|
638
b0108e9dea53
Date: Sun, 11 May 2003 19:59:06 +0300
Sam Lantinga <slouken@libsdl.org>
parents:
566
diff
changeset
|
299 /* |
|
b0108e9dea53
Date: Sun, 11 May 2003 19:59:06 +0300
Sam Lantinga <slouken@libsdl.org>
parents:
566
diff
changeset
|
300 * The context is now current, check for glXReleaseBuffersMESA() |
|
b0108e9dea53
Date: Sun, 11 May 2003 19:59:06 +0300
Sam Lantinga <slouken@libsdl.org>
parents:
566
diff
changeset
|
301 * extension. If extension is _not_ supported, destroy the pointer |
|
b0108e9dea53
Date: Sun, 11 May 2003 19:59:06 +0300
Sam Lantinga <slouken@libsdl.org>
parents:
566
diff
changeset
|
302 * (to make sure it will not be called in X11_GL_Shutdown() ). |
|
b0108e9dea53
Date: Sun, 11 May 2003 19:59:06 +0300
Sam Lantinga <slouken@libsdl.org>
parents:
566
diff
changeset
|
303 * |
|
b0108e9dea53
Date: Sun, 11 May 2003 19:59:06 +0300
Sam Lantinga <slouken@libsdl.org>
parents:
566
diff
changeset
|
304 * DRI/Mesa drivers include glXReleaseBuffersMESA() in the libGL.so, |
|
b0108e9dea53
Date: Sun, 11 May 2003 19:59:06 +0300
Sam Lantinga <slouken@libsdl.org>
parents:
566
diff
changeset
|
305 * but there's no need to call it (is is only needed for some old |
|
b0108e9dea53
Date: Sun, 11 May 2003 19:59:06 +0300
Sam Lantinga <slouken@libsdl.org>
parents:
566
diff
changeset
|
306 * non-DRI drivers). |
|
b0108e9dea53
Date: Sun, 11 May 2003 19:59:06 +0300
Sam Lantinga <slouken@libsdl.org>
parents:
566
diff
changeset
|
307 * |
|
b0108e9dea53
Date: Sun, 11 May 2003 19:59:06 +0300
Sam Lantinga <slouken@libsdl.org>
parents:
566
diff
changeset
|
308 * When using for example glew (http://glew.sf.net), dlsym() for |
|
b0108e9dea53
Date: Sun, 11 May 2003 19:59:06 +0300
Sam Lantinga <slouken@libsdl.org>
parents:
566
diff
changeset
|
309 * glXReleaseBuffersMESA() returns the pointer from the glew library |
|
b0108e9dea53
Date: Sun, 11 May 2003 19:59:06 +0300
Sam Lantinga <slouken@libsdl.org>
parents:
566
diff
changeset
|
310 * (namespace conflict). |
|
b0108e9dea53
Date: Sun, 11 May 2003 19:59:06 +0300
Sam Lantinga <slouken@libsdl.org>
parents:
566
diff
changeset
|
311 * |
|
b0108e9dea53
Date: Sun, 11 May 2003 19:59:06 +0300
Sam Lantinga <slouken@libsdl.org>
parents:
566
diff
changeset
|
312 * The glXReleaseBuffersMESA() pointer in the glew is NULL, if the |
|
b0108e9dea53
Date: Sun, 11 May 2003 19:59:06 +0300
Sam Lantinga <slouken@libsdl.org>
parents:
566
diff
changeset
|
313 * driver doesn't support this extension. So blindly calling it will |
|
b0108e9dea53
Date: Sun, 11 May 2003 19:59:06 +0300
Sam Lantinga <slouken@libsdl.org>
parents:
566
diff
changeset
|
314 * cause segfault with DRI/Mesa drivers! |
|
b0108e9dea53
Date: Sun, 11 May 2003 19:59:06 +0300
Sam Lantinga <slouken@libsdl.org>
parents:
566
diff
changeset
|
315 * |
|
b0108e9dea53
Date: Sun, 11 May 2003 19:59:06 +0300
Sam Lantinga <slouken@libsdl.org>
parents:
566
diff
changeset
|
316 */ |
|
b0108e9dea53
Date: Sun, 11 May 2003 19:59:06 +0300
Sam Lantinga <slouken@libsdl.org>
parents:
566
diff
changeset
|
317 |
|
655
9c42ee1b7d77
Date: Thu, 24 Apr 2003 15:13:47 -0400
Sam Lantinga <slouken@libsdl.org>
parents:
646
diff
changeset
|
318 if ( ! ExtensionSupported("glXReleaseBuffersMESA") ) { |
|
9c42ee1b7d77
Date: Thu, 24 Apr 2003 15:13:47 -0400
Sam Lantinga <slouken@libsdl.org>
parents:
646
diff
changeset
|
319 this->gl_data->glXReleaseBuffersMESA = NULL; |
|
9c42ee1b7d77
Date: Thu, 24 Apr 2003 15:13:47 -0400
Sam Lantinga <slouken@libsdl.org>
parents:
646
diff
changeset
|
320 } |
|
9c42ee1b7d77
Date: Thu, 24 Apr 2003 15:13:47 -0400
Sam Lantinga <slouken@libsdl.org>
parents:
646
diff
changeset
|
321 |
| 0 | 322 /* More Voodoo X server workarounds... Grr... */ |
| 323 SDL_Lock_EventThread(); | |
| 324 X11_CheckDGAMouse(this); | |
| 325 SDL_Unlock_EventThread(); | |
| 326 | |
| 327 return(retval); | |
| 328 } | |
| 329 | |
| 330 /* Get attribute data from glX. */ | |
| 331 int X11_GL_GetAttribute(_THIS, SDL_GLattr attrib, int* value) | |
| 332 { | |
| 333 int retval; | |
| 334 int glx_attrib = None; | |
| 335 | |
| 336 switch( attrib ) { | |
| 337 case SDL_GL_RED_SIZE: | |
| 338 glx_attrib = GLX_RED_SIZE; | |
| 339 break; | |
| 340 case SDL_GL_GREEN_SIZE: | |
| 341 glx_attrib = GLX_GREEN_SIZE; | |
| 342 break; | |
| 343 case SDL_GL_BLUE_SIZE: | |
| 344 glx_attrib = GLX_BLUE_SIZE; | |
| 345 break; | |
| 346 case SDL_GL_ALPHA_SIZE: | |
| 347 glx_attrib = GLX_ALPHA_SIZE; | |
| 348 break; | |
| 349 case SDL_GL_DOUBLEBUFFER: | |
| 350 glx_attrib = GLX_DOUBLEBUFFER; | |
| 351 break; | |
| 352 case SDL_GL_BUFFER_SIZE: | |
| 353 glx_attrib = GLX_BUFFER_SIZE; | |
| 354 break; | |
| 355 case SDL_GL_DEPTH_SIZE: | |
| 356 glx_attrib = GLX_DEPTH_SIZE; | |
| 357 break; | |
| 358 case SDL_GL_STENCIL_SIZE: | |
| 359 glx_attrib = GLX_STENCIL_SIZE; | |
| 360 break; | |
| 361 case SDL_GL_ACCUM_RED_SIZE: | |
| 362 glx_attrib = GLX_ACCUM_RED_SIZE; | |
| 363 break; | |
| 364 case SDL_GL_ACCUM_GREEN_SIZE: | |
| 365 glx_attrib = GLX_ACCUM_GREEN_SIZE; | |
| 366 break; | |
| 367 case SDL_GL_ACCUM_BLUE_SIZE: | |
| 368 glx_attrib = GLX_ACCUM_BLUE_SIZE; | |
| 369 break; | |
| 370 case SDL_GL_ACCUM_ALPHA_SIZE: | |
| 371 glx_attrib = GLX_ACCUM_ALPHA_SIZE; | |
| 372 break; | |
|
450
8a43e0cbf02f
Added SDL_GL_STEREO for stereoscopic OpenGL contexts
Sam Lantinga <slouken@libsdl.org>
parents:
297
diff
changeset
|
373 case SDL_GL_STEREO: |
|
8a43e0cbf02f
Added SDL_GL_STEREO for stereoscopic OpenGL contexts
Sam Lantinga <slouken@libsdl.org>
parents:
297
diff
changeset
|
374 glx_attrib = GLX_STEREO; |
|
8a43e0cbf02f
Added SDL_GL_STEREO for stereoscopic OpenGL contexts
Sam Lantinga <slouken@libsdl.org>
parents:
297
diff
changeset
|
375 break; |
|
656
864e2d2a9a55
Merged in Ryan's multisample code for MacOS, and changed the constants to match.
Sam Lantinga <slouken@libsdl.org>
parents:
655
diff
changeset
|
376 case SDL_GL_MULTISAMPLEBUFFERS: |
|
655
9c42ee1b7d77
Date: Thu, 24 Apr 2003 15:13:47 -0400
Sam Lantinga <slouken@libsdl.org>
parents:
646
diff
changeset
|
377 glx_attrib = GLX_SAMPLE_BUFFERS_ARB; |
|
9c42ee1b7d77
Date: Thu, 24 Apr 2003 15:13:47 -0400
Sam Lantinga <slouken@libsdl.org>
parents:
646
diff
changeset
|
378 break; |
|
656
864e2d2a9a55
Merged in Ryan's multisample code for MacOS, and changed the constants to match.
Sam Lantinga <slouken@libsdl.org>
parents:
655
diff
changeset
|
379 case SDL_GL_MULTISAMPLESAMPLES: |
|
655
9c42ee1b7d77
Date: Thu, 24 Apr 2003 15:13:47 -0400
Sam Lantinga <slouken@libsdl.org>
parents:
646
diff
changeset
|
380 glx_attrib = GLX_SAMPLES_ARB; |
|
9c42ee1b7d77
Date: Thu, 24 Apr 2003 15:13:47 -0400
Sam Lantinga <slouken@libsdl.org>
parents:
646
diff
changeset
|
381 break; |
| 0 | 382 default: |
| 383 return(-1); | |
| 384 } | |
| 385 | |
| 386 retval = this->gl_data->glXGetConfig(GFX_Display, glx_visualinfo, glx_attrib, value); | |
| 387 | |
| 388 return retval; | |
| 389 } | |
| 390 | |
| 391 void X11_GL_SwapBuffers(_THIS) | |
| 392 { | |
| 393 this->gl_data->glXSwapBuffers(GFX_Display, SDL_Window); | |
| 394 } | |
| 395 | |
| 396 #endif /* HAVE_OPENGL */ | |
| 397 | |
| 398 void X11_GL_UnloadLibrary(_THIS) | |
| 399 { | |
| 400 #ifdef HAVE_OPENGL | |
| 401 if ( this->gl_config.driver_loaded ) { | |
| 402 dlclose(this->gl_config.dll_handle); | |
| 403 | |
| 404 this->gl_data->glXGetProcAddress = NULL; | |
| 405 this->gl_data->glXChooseVisual = NULL; | |
| 406 this->gl_data->glXCreateContext = NULL; | |
| 407 this->gl_data->glXDestroyContext = NULL; | |
| 408 this->gl_data->glXMakeCurrent = NULL; | |
| 409 this->gl_data->glXSwapBuffers = NULL; | |
| 410 | |
| 411 this->gl_config.dll_handle = NULL; | |
| 412 this->gl_config.driver_loaded = 0; | |
| 413 } | |
| 414 #endif | |
| 415 } | |
| 416 | |
| 417 #ifdef HAVE_OPENGL | |
| 418 | |
| 419 /* Passing a NULL path means load pointers from the application */ | |
| 420 int X11_GL_LoadLibrary(_THIS, const char* path) | |
| 421 { | |
| 422 void* handle; | |
| 423 int dlopen_flags; | |
| 424 | |
| 425 if ( gl_active ) { | |
| 426 SDL_SetError("OpenGL context already created"); | |
| 427 return -1; | |
| 428 } | |
| 429 | |
| 430 #ifdef RTLD_GLOBAL | |
| 431 dlopen_flags = RTLD_LAZY | RTLD_GLOBAL; | |
| 432 #else | |
| 433 dlopen_flags = RTLD_LAZY; | |
| 434 #endif | |
| 435 handle = dlopen(path, dlopen_flags); | |
| 436 /* Catch the case where the application isn't linked with GL */ | |
| 437 if ( (dlsym(handle, "glXChooseVisual") == NULL) && (path == NULL) ) { | |
| 438 dlclose(handle); | |
| 439 path = getenv("SDL_VIDEO_GL_DRIVER"); | |
| 440 if ( path == NULL ) { | |
| 441 path = DEFAULT_OPENGL; | |
| 442 } | |
| 443 handle = dlopen(path, dlopen_flags); | |
| 444 } | |
| 445 if ( handle == NULL ) { | |
| 446 SDL_SetError("Could not load OpenGL library"); | |
| 447 return -1; | |
| 448 } | |
| 449 | |
| 450 /* Unload the old driver and reset the pointers */ | |
| 451 X11_GL_UnloadLibrary(this); | |
| 452 | |
| 453 /* Load new function pointers */ | |
|
180
578815880307
Do proper typecasting so this compiles on IRIX
Sam Lantinga <slouken@libsdl.org>
parents:
127
diff
changeset
|
454 this->gl_data->glXGetProcAddress = |
|
578815880307
Do proper typecasting so this compiles on IRIX
Sam Lantinga <slouken@libsdl.org>
parents:
127
diff
changeset
|
455 (void *(*)(const GLubyte *)) dlsym(handle, "glXGetProcAddressARB"); |
|
578815880307
Do proper typecasting so this compiles on IRIX
Sam Lantinga <slouken@libsdl.org>
parents:
127
diff
changeset
|
456 this->gl_data->glXChooseVisual = |
|
578815880307
Do proper typecasting so this compiles on IRIX
Sam Lantinga <slouken@libsdl.org>
parents:
127
diff
changeset
|
457 (XVisualInfo *(*)(Display *, int, int *)) dlsym(handle, "glXChooseVisual"); |
|
578815880307
Do proper typecasting so this compiles on IRIX
Sam Lantinga <slouken@libsdl.org>
parents:
127
diff
changeset
|
458 this->gl_data->glXCreateContext = |
|
578815880307
Do proper typecasting so this compiles on IRIX
Sam Lantinga <slouken@libsdl.org>
parents:
127
diff
changeset
|
459 (GLXContext (*)(Display *, XVisualInfo *, GLXContext, int)) dlsym(handle, "glXCreateContext"); |
|
578815880307
Do proper typecasting so this compiles on IRIX
Sam Lantinga <slouken@libsdl.org>
parents:
127
diff
changeset
|
460 this->gl_data->glXDestroyContext = |
|
578815880307
Do proper typecasting so this compiles on IRIX
Sam Lantinga <slouken@libsdl.org>
parents:
127
diff
changeset
|
461 (void (*)(Display *, GLXContext)) dlsym(handle, "glXDestroyContext"); |
|
578815880307
Do proper typecasting so this compiles on IRIX
Sam Lantinga <slouken@libsdl.org>
parents:
127
diff
changeset
|
462 this->gl_data->glXMakeCurrent = |
|
578815880307
Do proper typecasting so this compiles on IRIX
Sam Lantinga <slouken@libsdl.org>
parents:
127
diff
changeset
|
463 (int (*)(Display *, GLXDrawable, GLXContext)) dlsym(handle, "glXMakeCurrent"); |
|
578815880307
Do proper typecasting so this compiles on IRIX
Sam Lantinga <slouken@libsdl.org>
parents:
127
diff
changeset
|
464 this->gl_data->glXSwapBuffers = |
|
578815880307
Do proper typecasting so this compiles on IRIX
Sam Lantinga <slouken@libsdl.org>
parents:
127
diff
changeset
|
465 (void (*)(Display *, GLXDrawable)) dlsym(handle, "glXSwapBuffers"); |
|
578815880307
Do proper typecasting so this compiles on IRIX
Sam Lantinga <slouken@libsdl.org>
parents:
127
diff
changeset
|
466 this->gl_data->glXGetConfig = |
|
578815880307
Do proper typecasting so this compiles on IRIX
Sam Lantinga <slouken@libsdl.org>
parents:
127
diff
changeset
|
467 (int (*)(Display *, XVisualInfo *, int, int *)) dlsym(handle, "glXGetConfig"); |
|
638
b0108e9dea53
Date: Sun, 11 May 2003 19:59:06 +0300
Sam Lantinga <slouken@libsdl.org>
parents:
566
diff
changeset
|
468 this->gl_data->glXQueryExtensionsString = |
|
646
0f2029a70548
Fixed incorrect prototype for glXQueryExtensionsString()
Sam Lantinga <slouken@libsdl.org>
parents:
643
diff
changeset
|
469 (const char *(*)(Display *, int)) dlsym(handle, "glXQueryExtensionsString"); |
|
638
b0108e9dea53
Date: Sun, 11 May 2003 19:59:06 +0300
Sam Lantinga <slouken@libsdl.org>
parents:
566
diff
changeset
|
470 |
| 0 | 471 /* We don't compare below for this in case we're not using Mesa. */ |
|
180
578815880307
Do proper typecasting so this compiles on IRIX
Sam Lantinga <slouken@libsdl.org>
parents:
127
diff
changeset
|
472 this->gl_data->glXReleaseBuffersMESA = |
|
578815880307
Do proper typecasting so this compiles on IRIX
Sam Lantinga <slouken@libsdl.org>
parents:
127
diff
changeset
|
473 (void (*)(Display *, GLXDrawable)) dlsym( handle, "glXReleaseBuffersMESA" ); |
|
638
b0108e9dea53
Date: Sun, 11 May 2003 19:59:06 +0300
Sam Lantinga <slouken@libsdl.org>
parents:
566
diff
changeset
|
474 |
|
b0108e9dea53
Date: Sun, 11 May 2003 19:59:06 +0300
Sam Lantinga <slouken@libsdl.org>
parents:
566
diff
changeset
|
475 |
| 0 | 476 if ( (this->gl_data->glXChooseVisual == NULL) || |
| 477 (this->gl_data->glXCreateContext == NULL) || | |
| 478 (this->gl_data->glXDestroyContext == NULL) || | |
| 479 (this->gl_data->glXMakeCurrent == NULL) || | |
| 480 (this->gl_data->glXSwapBuffers == NULL) || | |
|
638
b0108e9dea53
Date: Sun, 11 May 2003 19:59:06 +0300
Sam Lantinga <slouken@libsdl.org>
parents:
566
diff
changeset
|
481 (this->gl_data->glXGetConfig == NULL) || |
|
b0108e9dea53
Date: Sun, 11 May 2003 19:59:06 +0300
Sam Lantinga <slouken@libsdl.org>
parents:
566
diff
changeset
|
482 (this->gl_data->glXQueryExtensionsString == NULL)) { |
| 0 | 483 SDL_SetError("Could not retrieve OpenGL functions"); |
| 484 return -1; | |
| 485 } | |
| 486 | |
| 487 this->gl_config.dll_handle = handle; | |
| 488 this->gl_config.driver_loaded = 1; | |
| 489 if ( path ) { | |
| 490 strncpy(this->gl_config.driver_path, path, | |
| 491 sizeof(this->gl_config.driver_path)-1); | |
| 492 } else { | |
| 493 strcpy(this->gl_config.driver_path, ""); | |
| 494 } | |
| 495 return 0; | |
| 496 } | |
| 497 | |
| 498 void *X11_GL_GetProcAddress(_THIS, const char* proc) | |
| 499 { | |
|
110
7edee9f0f2cc
SDL GL dynamic loading fix for OpenBSD
Sam Lantinga <slouken@lokigames.com>
parents:
29
diff
changeset
|
500 static char procname[1024]; |
| 0 | 501 void* handle; |
|
110
7edee9f0f2cc
SDL GL dynamic loading fix for OpenBSD
Sam Lantinga <slouken@lokigames.com>
parents:
29
diff
changeset
|
502 void* retval; |
| 0 | 503 |
| 504 handle = this->gl_config.dll_handle; | |
| 505 if ( this->gl_data->glXGetProcAddress ) { | |
|
566
d6e7d7006062
Enable the glXGetProcAddressARB code (fixes problems with NVidia drivers)
Sam Lantinga <slouken@libsdl.org>
parents:
450
diff
changeset
|
506 return this->gl_data->glXGetProcAddress(proc); |
| 0 | 507 } |
|
110
7edee9f0f2cc
SDL GL dynamic loading fix for OpenBSD
Sam Lantinga <slouken@lokigames.com>
parents:
29
diff
changeset
|
508 #if defined(__OpenBSD__) && !defined(__ELF__) |
|
7edee9f0f2cc
SDL GL dynamic loading fix for OpenBSD
Sam Lantinga <slouken@lokigames.com>
parents:
29
diff
changeset
|
509 #undef dlsym(x,y); |
|
7edee9f0f2cc
SDL GL dynamic loading fix for OpenBSD
Sam Lantinga <slouken@lokigames.com>
parents:
29
diff
changeset
|
510 #endif |
|
7edee9f0f2cc
SDL GL dynamic loading fix for OpenBSD
Sam Lantinga <slouken@lokigames.com>
parents:
29
diff
changeset
|
511 retval = dlsym(handle, proc); |
|
7edee9f0f2cc
SDL GL dynamic loading fix for OpenBSD
Sam Lantinga <slouken@lokigames.com>
parents:
29
diff
changeset
|
512 if (!retval && strlen(proc) <= 1022) { |
|
127
0bcae11eba14
Oops, that wasn't right...
Sam Lantinga <slouken@libsdl.org>
parents:
110
diff
changeset
|
513 procname[0] = '_'; |
|
110
7edee9f0f2cc
SDL GL dynamic loading fix for OpenBSD
Sam Lantinga <slouken@lokigames.com>
parents:
29
diff
changeset
|
514 strcpy(procname + 1, proc); |
|
7edee9f0f2cc
SDL GL dynamic loading fix for OpenBSD
Sam Lantinga <slouken@lokigames.com>
parents:
29
diff
changeset
|
515 retval = dlsym(handle, procname); |
|
7edee9f0f2cc
SDL GL dynamic loading fix for OpenBSD
Sam Lantinga <slouken@lokigames.com>
parents:
29
diff
changeset
|
516 } |
|
7edee9f0f2cc
SDL GL dynamic loading fix for OpenBSD
Sam Lantinga <slouken@lokigames.com>
parents:
29
diff
changeset
|
517 return retval; |
| 0 | 518 } |
| 519 | |
| 520 #endif /* HAVE_OPENGL */ |