slouken@1952
|
1 |
/*
|
slouken@1952
|
2 |
SDL - Simple DirectMedia Layer
|
slouken@2859
|
3 |
Copyright (C) 1997-2009 Sam Lantinga
|
slouken@1952
|
4 |
|
slouken@1952
|
5 |
This library is free software; you can redistribute it and/or
|
slouken@1952
|
6 |
modify it under the terms of the GNU Lesser General Public
|
slouken@1952
|
7 |
License as published by the Free Software Foundation; either
|
slouken@1952
|
8 |
version 2.1 of the License, or (at your option) any later version.
|
slouken@1952
|
9 |
|
slouken@1952
|
10 |
This library is distributed in the hope that it will be useful,
|
slouken@1952
|
11 |
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
slouken@1952
|
12 |
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
slouken@1952
|
13 |
Lesser General Public License for more details.
|
slouken@1952
|
14 |
|
slouken@1952
|
15 |
You should have received a copy of the GNU Lesser General Public
|
slouken@1952
|
16 |
License along with _this library; if not, write to the Free Software
|
slouken@1952
|
17 |
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
|
slouken@1952
|
18 |
|
slouken@1952
|
19 |
Sam Lantinga
|
slouken@1952
|
20 |
slouken@libsdl.org
|
slouken@1952
|
21 |
*/
|
slouken@1952
|
22 |
#include "SDL_config.h"
|
slouken@1952
|
23 |
|
slouken@1952
|
24 |
#include "SDL_x11video.h"
|
slouken@1952
|
25 |
|
slouken@1952
|
26 |
/* GLX implementation of SDL OpenGL support */
|
slouken@1952
|
27 |
|
slouken@1952
|
28 |
#if SDL_VIDEO_OPENGL_GLX
|
slouken@1952
|
29 |
#include "SDL_loadso.h"
|
slouken@1952
|
30 |
|
slouken@1952
|
31 |
#if defined(__IRIX__)
|
slouken@1952
|
32 |
/* IRIX doesn't have a GL library versioning system */
|
slouken@1952
|
33 |
#define DEFAULT_OPENGL "libGL.so"
|
slouken@1952
|
34 |
#elif defined(__MACOSX__)
|
slouken@1952
|
35 |
#define DEFAULT_OPENGL "/usr/X11R6/lib/libGL.1.dylib"
|
slouken@1952
|
36 |
#elif defined(__QNXNTO__)
|
slouken@1952
|
37 |
#define DEFAULT_OPENGL "libGL.so.3"
|
slouken@1952
|
38 |
#else
|
slouken@1952
|
39 |
#define DEFAULT_OPENGL "libGL.so.1"
|
slouken@1952
|
40 |
#endif
|
slouken@1952
|
41 |
|
slouken@1952
|
42 |
#ifndef GLX_ARB_multisample
|
slouken@1952
|
43 |
#define GLX_ARB_multisample
|
slouken@1952
|
44 |
#define GLX_SAMPLE_BUFFERS_ARB 100000
|
slouken@1952
|
45 |
#define GLX_SAMPLES_ARB 100001
|
slouken@1952
|
46 |
#endif
|
slouken@1952
|
47 |
|
slouken@1952
|
48 |
#ifndef GLX_EXT_visual_rating
|
slouken@1952
|
49 |
#define GLX_EXT_visual_rating
|
slouken@1952
|
50 |
#define GLX_VISUAL_CAVEAT_EXT 0x20
|
slouken@1952
|
51 |
#define GLX_NONE_EXT 0x8000
|
slouken@1952
|
52 |
#define GLX_SLOW_VISUAL_EXT 0x8001
|
slouken@1952
|
53 |
#define GLX_NON_CONFORMANT_VISUAL_EXT 0x800D
|
slouken@1952
|
54 |
#endif
|
slouken@1952
|
55 |
|
slouken@3100
|
56 |
#ifndef GLX_ARB_create_context
|
slouken@3100
|
57 |
#define GLX_ARB_create_context
|
slouken@3100
|
58 |
#define GLX_CONTEXT_MAJOR_VERSION_ARB 0x2091
|
slouken@3100
|
59 |
#define GLX_CONTEXT_MINOR_VERSION_ARB 0x2092
|
slouken@3100
|
60 |
#define GLX_CONTEXT_FLAGS_ARB 0x2094
|
slouken@3100
|
61 |
#define GLX_CONTEXT_DEBUG_BIT_ARB 0x0001
|
slouken@3100
|
62 |
#define GLX_CONTEXT_FORWARD_COMPATIBLE_BIT_ARB 0x0002
|
slouken@3100
|
63 |
#endif
|
slouken@3100
|
64 |
|
slouken@1952
|
65 |
#define OPENGL_REQUIRS_DLOPEN
|
slouken@1952
|
66 |
#if defined(OPENGL_REQUIRS_DLOPEN) && defined(SDL_LOADSO_DLOPEN)
|
slouken@1952
|
67 |
#include <dlfcn.h>
|
slouken@1952
|
68 |
#define GL_LoadObject(X) dlopen(X, (RTLD_NOW|RTLD_GLOBAL))
|
slouken@1952
|
69 |
#define GL_LoadFunction dlsym
|
slouken@1952
|
70 |
#define GL_UnloadObject dlclose
|
slouken@1952
|
71 |
#else
|
slouken@1952
|
72 |
#define GL_LoadObject SDL_LoadObject
|
slouken@1952
|
73 |
#define GL_LoadFunction SDL_LoadFunction
|
slouken@1952
|
74 |
#define GL_UnloadObject SDL_UnloadObject
|
slouken@1952
|
75 |
#endif
|
slouken@1952
|
76 |
|
slouken@3057
|
77 |
static void X11_GL_InitExtensions(_THIS);
|
bob@2322
|
78 |
|
slouken@3100
|
79 |
/* Typedef for the GL 3.0 context creation function */
|
slouken@3100
|
80 |
typedef GLXContext ( * PFNGLXCREATECONTEXTATTRIBSARBPROC) (Display *dpy, GLXFBConfig config, GLXContext share_context, Bool direct, const int *attrib_list);
|
slouken@3100
|
81 |
|
slouken@1952
|
82 |
int
|
slouken@1952
|
83 |
X11_GL_LoadLibrary(_THIS, const char *path)
|
slouken@1952
|
84 |
{
|
slouken@1952
|
85 |
void *handle;
|
slouken@1952
|
86 |
|
slouken@3057
|
87 |
/* Load the OpenGL library */
|
slouken@3057
|
88 |
if (path == NULL) {
|
slouken@3057
|
89 |
path = SDL_getenv("SDL_OPENGL_LIBRARY");
|
slouken@1952
|
90 |
}
|
slouken@3057
|
91 |
if (path == NULL) {
|
slouken@3057
|
92 |
path = DEFAULT_OPENGL;
|
slouken@3057
|
93 |
}
|
slouken@3057
|
94 |
_this->gl_config.dll_handle = SDL_LoadObject(path);
|
slouken@3057
|
95 |
if (!_this->gl_config.dll_handle) {
|
slouken@3057
|
96 |
return -1;
|
slouken@3057
|
97 |
}
|
slouken@3057
|
98 |
SDL_strlcpy(_this->gl_config.driver_path, path,
|
slouken@3057
|
99 |
SDL_arraysize(_this->gl_config.driver_path));
|
slouken@2244
|
100 |
|
slouken@3057
|
101 |
/* Allocate OpenGL memory */
|
slouken@3057
|
102 |
_this->gl_data =
|
slouken@3057
|
103 |
(struct SDL_GLDriverData *) SDL_calloc(1,
|
slouken@3057
|
104 |
sizeof(struct
|
slouken@3057
|
105 |
SDL_GLDriverData));
|
slouken@3057
|
106 |
if (!_this->gl_data) {
|
slouken@3057
|
107 |
SDL_OutOfMemory();
|
slouken@3057
|
108 |
return -1;
|
slouken@3057
|
109 |
}
|
slouken@3057
|
110 |
|
slouken@3057
|
111 |
/* Load function pointers */
|
slouken@3057
|
112 |
handle = _this->gl_config.dll_handle;
|
slouken@1952
|
113 |
_this->gl_data->glXGetProcAddress =
|
slouken@1952
|
114 |
(void *(*)(const GLubyte *)) GL_LoadFunction(handle,
|
slouken@1952
|
115 |
"glXGetProcAddressARB");
|
slouken@1952
|
116 |
_this->gl_data->glXChooseVisual =
|
slouken@1952
|
117 |
(XVisualInfo * (*)(Display *, int, int *)) GL_LoadFunction(handle,
|
slouken@1952
|
118 |
"glXChooseVisual");
|
slouken@1952
|
119 |
_this->gl_data->glXCreateContext =
|
slouken@1952
|
120 |
(GLXContext(*)(Display *, XVisualInfo *, GLXContext, int))
|
slouken@1952
|
121 |
GL_LoadFunction(handle, "glXCreateContext");
|
slouken@1952
|
122 |
_this->gl_data->glXDestroyContext =
|
slouken@1952
|
123 |
(void (*)(Display *, GLXContext)) GL_LoadFunction(handle,
|
slouken@1952
|
124 |
"glXDestroyContext");
|
slouken@1952
|
125 |
_this->gl_data->glXMakeCurrent =
|
slouken@1952
|
126 |
(int (*)(Display *, GLXDrawable, GLXContext)) GL_LoadFunction(handle,
|
slouken@1952
|
127 |
"glXMakeCurrent");
|
slouken@1952
|
128 |
_this->gl_data->glXSwapBuffers =
|
slouken@1952
|
129 |
(void (*)(Display *, GLXDrawable)) GL_LoadFunction(handle,
|
slouken@1952
|
130 |
"glXSwapBuffers");
|
slouken@1952
|
131 |
|
slouken@1952
|
132 |
if (!_this->gl_data->glXChooseVisual ||
|
slouken@1952
|
133 |
!_this->gl_data->glXCreateContext ||
|
slouken@1952
|
134 |
!_this->gl_data->glXDestroyContext ||
|
slouken@1956
|
135 |
!_this->gl_data->glXMakeCurrent || !_this->gl_data->glXSwapBuffers) {
|
slouken@1952
|
136 |
SDL_SetError("Could not retrieve OpenGL functions");
|
slouken@1952
|
137 |
return -1;
|
slouken@1952
|
138 |
}
|
slouken@1952
|
139 |
|
slouken@3057
|
140 |
/* Initialize extensions */
|
slouken@3057
|
141 |
X11_GL_InitExtensions(_this);
|
slouken@3057
|
142 |
|
slouken@1952
|
143 |
return 0;
|
slouken@1952
|
144 |
}
|
slouken@1952
|
145 |
|
slouken@1952
|
146 |
void *
|
slouken@1952
|
147 |
X11_GL_GetProcAddress(_THIS, const char *proc)
|
slouken@1952
|
148 |
{
|
slouken@1952
|
149 |
void *handle;
|
slouken@1952
|
150 |
|
slouken@1952
|
151 |
handle = _this->gl_config.dll_handle;
|
slouken@1952
|
152 |
if (_this->gl_data->glXGetProcAddress) {
|
slouken@1952
|
153 |
return _this->gl_data->glXGetProcAddress((const GLubyte *) proc);
|
slouken@1952
|
154 |
}
|
slouken@1952
|
155 |
return GL_LoadFunction(handle, proc);
|
slouken@1952
|
156 |
}
|
slouken@1952
|
157 |
|
slouken@3057
|
158 |
void
|
slouken@1952
|
159 |
X11_GL_UnloadLibrary(_THIS)
|
slouken@1952
|
160 |
{
|
slouken@3057
|
161 |
/* Don't actually unload the library, since it may have registered
|
slouken@3057
|
162 |
* X11 shutdown hooks, per the notes at:
|
slouken@3057
|
163 |
* http://dri.sourceforge.net/doc/DRIuserguide.html
|
slouken@3057
|
164 |
*/
|
slouken@3057
|
165 |
#if 0
|
slouken@3057
|
166 |
GL_UnloadObject(_this->gl_config.dll_handle);
|
slouken@3057
|
167 |
_this->gl_config.dll_handle = NULL;
|
slouken@3057
|
168 |
#endif
|
slouken@3057
|
169 |
|
slouken@3057
|
170 |
/* Free OpenGL memory */
|
slouken@3057
|
171 |
SDL_free(_this->gl_data);
|
slouken@3057
|
172 |
_this->gl_data = NULL;
|
slouken@1952
|
173 |
}
|
slouken@1952
|
174 |
|
slouken@1952
|
175 |
static SDL_bool
|
slouken@1952
|
176 |
HasExtension(const char *extension, const char *extensions)
|
slouken@1952
|
177 |
{
|
slouken@1952
|
178 |
const char *start;
|
slouken@1952
|
179 |
const char *where, *terminator;
|
slouken@1952
|
180 |
|
slouken@1952
|
181 |
/* Extension names should not have spaces. */
|
slouken@1952
|
182 |
where = SDL_strchr(extension, ' ');
|
slouken@1952
|
183 |
if (where || *extension == '\0')
|
slouken@1952
|
184 |
return SDL_FALSE;
|
slouken@1952
|
185 |
|
slouken@1952
|
186 |
if (!extensions)
|
slouken@1952
|
187 |
return SDL_FALSE;
|
slouken@1952
|
188 |
|
slouken@1952
|
189 |
/* It takes a bit of care to be fool-proof about parsing the
|
slouken@1952
|
190 |
* OpenGL extensions string. Don't be fooled by sub-strings,
|
slouken@1952
|
191 |
* etc. */
|
slouken@1952
|
192 |
|
slouken@1952
|
193 |
start = extensions;
|
slouken@1952
|
194 |
|
slouken@1952
|
195 |
for (;;) {
|
slouken@1952
|
196 |
where = SDL_strstr(start, extension);
|
slouken@1952
|
197 |
if (!where)
|
slouken@1952
|
198 |
break;
|
slouken@1952
|
199 |
|
slouken@1952
|
200 |
terminator = where + SDL_strlen(extension);
|
slouken@1952
|
201 |
if (where == start || *(where - 1) == ' ')
|
slouken@1952
|
202 |
if (*terminator == ' ' || *terminator == '\0')
|
slouken@1952
|
203 |
return SDL_TRUE;
|
slouken@1952
|
204 |
|
slouken@1952
|
205 |
start = terminator;
|
slouken@1952
|
206 |
}
|
slouken@1952
|
207 |
return SDL_FALSE;
|
slouken@1952
|
208 |
}
|
slouken@1952
|
209 |
|
slouken@1952
|
210 |
static void
|
slouken@1952
|
211 |
X11_GL_InitExtensions(_THIS)
|
slouken@1952
|
212 |
{
|
slouken@1952
|
213 |
Display *display = ((SDL_VideoData *) _this->driverdata)->display;
|
slouken@1952
|
214 |
int screen = ((SDL_DisplayData *) SDL_CurrentDisplay.driverdata)->screen;
|
slouken@1952
|
215 |
XVisualInfo *vinfo;
|
slouken@1952
|
216 |
XSetWindowAttributes xattr;
|
slouken@1952
|
217 |
Window w;
|
slouken@1952
|
218 |
GLXContext context;
|
slouken@1952
|
219 |
const char *(*glXQueryExtensionsStringFunc) (Display *, int);
|
slouken@1952
|
220 |
const char *extensions;
|
slouken@1952
|
221 |
|
slouken@1952
|
222 |
vinfo = X11_GL_GetVisual(_this, display, screen);
|
slouken@1952
|
223 |
if (!vinfo) {
|
slouken@1952
|
224 |
return;
|
slouken@1952
|
225 |
}
|
slouken@1952
|
226 |
xattr.background_pixel = 0;
|
slouken@1952
|
227 |
xattr.border_pixel = 0;
|
slouken@1952
|
228 |
xattr.colormap =
|
slouken@1952
|
229 |
XCreateColormap(display, RootWindow(display, screen), vinfo->visual,
|
slouken@1952
|
230 |
AllocNone);
|
slouken@1952
|
231 |
w = XCreateWindow(display, RootWindow(display, screen), 0, 0, 32, 32, 0,
|
slouken@1952
|
232 |
vinfo->depth, InputOutput, vinfo->visual,
|
slouken@1952
|
233 |
(CWBackPixel | CWBorderPixel | CWColormap), &xattr);
|
slouken@1952
|
234 |
context = _this->gl_data->glXCreateContext(display, vinfo, NULL, True);
|
slouken@1952
|
235 |
if (context) {
|
slouken@1952
|
236 |
_this->gl_data->glXMakeCurrent(display, w, context);
|
slouken@1952
|
237 |
}
|
slouken@1952
|
238 |
XFree(vinfo);
|
slouken@1952
|
239 |
|
slouken@1952
|
240 |
glXQueryExtensionsStringFunc =
|
slouken@1952
|
241 |
(const char *(*)(Display *, int)) X11_GL_GetProcAddress(_this,
|
slouken@1952
|
242 |
"glXQueryExtensionsString");
|
slouken@1952
|
243 |
if (glXQueryExtensionsStringFunc) {
|
slouken@1952
|
244 |
extensions = glXQueryExtensionsStringFunc(display, screen);
|
slouken@1952
|
245 |
} else {
|
slouken@1952
|
246 |
extensions = NULL;
|
slouken@1952
|
247 |
}
|
slouken@1952
|
248 |
|
slouken@1952
|
249 |
/* Check for SGI_swap_control */
|
icculus@2105
|
250 |
if (HasExtension("GLX_SGI_swap_control", extensions)) {
|
slouken@1952
|
251 |
_this->gl_data->glXSwapIntervalSGI =
|
slouken@1952
|
252 |
(int (*)(int)) X11_GL_GetProcAddress(_this, "glXSwapIntervalSGI");
|
slouken@1952
|
253 |
}
|
slouken@1952
|
254 |
|
slouken@1952
|
255 |
/* Check for GLX_MESA_swap_control */
|
slouken@1952
|
256 |
if (HasExtension("GLX_MESA_swap_control", extensions)) {
|
slouken@1952
|
257 |
_this->gl_data->glXSwapIntervalMESA =
|
slouken@1952
|
258 |
(GLint(*)(unsigned)) X11_GL_GetProcAddress(_this,
|
slouken@1952
|
259 |
"glXSwapIntervalMESA");
|
slouken@1952
|
260 |
_this->gl_data->glXGetSwapIntervalMESA =
|
slouken@1952
|
261 |
(GLint(*)(void)) X11_GL_GetProcAddress(_this,
|
slouken@1952
|
262 |
"glXGetSwapIntervalMESA");
|
slouken@1952
|
263 |
}
|
slouken@1952
|
264 |
|
slouken@1952
|
265 |
/* Check for GLX_EXT_visual_rating */
|
slouken@1952
|
266 |
if (HasExtension("GLX_EXT_visual_rating", extensions)) {
|
slouken@1952
|
267 |
_this->gl_data->HAS_GLX_EXT_visual_rating = SDL_TRUE;
|
slouken@1952
|
268 |
}
|
slouken@1952
|
269 |
|
slouken@1952
|
270 |
if (context) {
|
slouken@1952
|
271 |
_this->gl_data->glXMakeCurrent(display, None, NULL);
|
slouken@1952
|
272 |
_this->gl_data->glXDestroyContext(display, context);
|
slouken@1952
|
273 |
}
|
slouken@1952
|
274 |
XDestroyWindow(display, w);
|
bob@2323
|
275 |
X11_PumpEvents(_this);
|
slouken@1952
|
276 |
}
|
slouken@1952
|
277 |
|
slouken@1952
|
278 |
XVisualInfo *
|
slouken@1952
|
279 |
X11_GL_GetVisual(_THIS, Display * display, int screen)
|
slouken@1952
|
280 |
{
|
slouken@1952
|
281 |
XVisualInfo *vinfo;
|
slouken@1952
|
282 |
|
slouken@1952
|
283 |
/* 64 seems nice. */
|
slouken@1952
|
284 |
int attribs[64];
|
slouken@3100
|
285 |
int i = 0;
|
slouken@3100
|
286 |
|
slouken@1952
|
287 |
/* Setup our GLX attributes according to the gl_config. */
|
slouken@1952
|
288 |
attribs[i++] = GLX_RGBA;
|
slouken@1952
|
289 |
attribs[i++] = GLX_RED_SIZE;
|
slouken@1952
|
290 |
attribs[i++] = _this->gl_config.red_size;
|
slouken@1952
|
291 |
attribs[i++] = GLX_GREEN_SIZE;
|
slouken@1952
|
292 |
attribs[i++] = _this->gl_config.green_size;
|
slouken@1952
|
293 |
attribs[i++] = GLX_BLUE_SIZE;
|
slouken@1952
|
294 |
attribs[i++] = _this->gl_config.blue_size;
|
slouken@1952
|
295 |
|
slouken@1952
|
296 |
if (_this->gl_config.alpha_size) {
|
slouken@1952
|
297 |
attribs[i++] = GLX_ALPHA_SIZE;
|
slouken@1952
|
298 |
attribs[i++] = _this->gl_config.alpha_size;
|
slouken@1952
|
299 |
}
|
slouken@1952
|
300 |
|
slouken@1952
|
301 |
if (_this->gl_config.buffer_size) {
|
slouken@1952
|
302 |
attribs[i++] = GLX_BUFFER_SIZE;
|
slouken@1952
|
303 |
attribs[i++] = _this->gl_config.buffer_size;
|
slouken@1952
|
304 |
}
|
slouken@1952
|
305 |
|
slouken@1952
|
306 |
if (_this->gl_config.double_buffer) {
|
slouken@1952
|
307 |
attribs[i++] = GLX_DOUBLEBUFFER;
|
slouken@1952
|
308 |
}
|
slouken@1952
|
309 |
|
slouken@1952
|
310 |
attribs[i++] = GLX_DEPTH_SIZE;
|
slouken@1952
|
311 |
attribs[i++] = _this->gl_config.depth_size;
|
slouken@1952
|
312 |
|
slouken@1952
|
313 |
if (_this->gl_config.stencil_size) {
|
slouken@1952
|
314 |
attribs[i++] = GLX_STENCIL_SIZE;
|
slouken@1952
|
315 |
attribs[i++] = _this->gl_config.stencil_size;
|
slouken@1952
|
316 |
}
|
slouken@1952
|
317 |
|
slouken@1952
|
318 |
if (_this->gl_config.accum_red_size) {
|
slouken@1952
|
319 |
attribs[i++] = GLX_ACCUM_RED_SIZE;
|
slouken@1952
|
320 |
attribs[i++] = _this->gl_config.accum_red_size;
|
slouken@1952
|
321 |
}
|
slouken@1952
|
322 |
|
slouken@1952
|
323 |
if (_this->gl_config.accum_green_size) {
|
slouken@1952
|
324 |
attribs[i++] = GLX_ACCUM_GREEN_SIZE;
|
slouken@1952
|
325 |
attribs[i++] = _this->gl_config.accum_green_size;
|
slouken@1952
|
326 |
}
|
slouken@1952
|
327 |
|
slouken@1952
|
328 |
if (_this->gl_config.accum_blue_size) {
|
slouken@1952
|
329 |
attribs[i++] = GLX_ACCUM_BLUE_SIZE;
|
slouken@1952
|
330 |
attribs[i++] = _this->gl_config.accum_blue_size;
|
slouken@1952
|
331 |
}
|
slouken@1952
|
332 |
|
slouken@1952
|
333 |
if (_this->gl_config.accum_alpha_size) {
|
slouken@1952
|
334 |
attribs[i++] = GLX_ACCUM_ALPHA_SIZE;
|
slouken@1952
|
335 |
attribs[i++] = _this->gl_config.accum_alpha_size;
|
slouken@1952
|
336 |
}
|
slouken@1952
|
337 |
|
slouken@1952
|
338 |
if (_this->gl_config.stereo) {
|
slouken@1952
|
339 |
attribs[i++] = GLX_STEREO;
|
slouken@1952
|
340 |
}
|
slouken@1952
|
341 |
|
slouken@1952
|
342 |
if (_this->gl_config.multisamplebuffers) {
|
slouken@1952
|
343 |
attribs[i++] = GLX_SAMPLE_BUFFERS_ARB;
|
slouken@1952
|
344 |
attribs[i++] = _this->gl_config.multisamplebuffers;
|
slouken@1952
|
345 |
}
|
slouken@1952
|
346 |
|
slouken@1952
|
347 |
if (_this->gl_config.multisamplesamples) {
|
slouken@1952
|
348 |
attribs[i++] = GLX_SAMPLES_ARB;
|
slouken@1952
|
349 |
attribs[i++] = _this->gl_config.multisamplesamples;
|
slouken@1952
|
350 |
}
|
slouken@1952
|
351 |
|
slouken@1952
|
352 |
if (_this->gl_config.accelerated >= 0
|
slouken@1952
|
353 |
&& _this->gl_data->HAS_GLX_EXT_visual_rating) {
|
slouken@1952
|
354 |
attribs[i++] = GLX_VISUAL_CAVEAT_EXT;
|
slouken@1952
|
355 |
attribs[i++] = GLX_NONE_EXT;
|
slouken@1952
|
356 |
}
|
slouken@1952
|
357 |
#ifdef GLX_DIRECT_COLOR /* Try for a DirectColor visual for gamma support */
|
slouken@2963
|
358 |
if (X11_UseDirectColorVisuals()) {
|
slouken@1952
|
359 |
attribs[i++] = GLX_X_VISUAL_TYPE;
|
slouken@1952
|
360 |
attribs[i++] = GLX_DIRECT_COLOR;
|
slouken@1952
|
361 |
}
|
slouken@1952
|
362 |
#endif
|
slouken@1952
|
363 |
attribs[i++] = None;
|
slouken@1952
|
364 |
|
slouken@1952
|
365 |
vinfo = _this->gl_data->glXChooseVisual(display, screen, attribs);
|
slouken@1952
|
366 |
#ifdef GLX_DIRECT_COLOR
|
slouken@2963
|
367 |
if (!vinfo && X11_UseDirectColorVisuals()) { /* No DirectColor visual? Try again.. */
|
slouken@1952
|
368 |
attribs[i - 3] = None;
|
slouken@1952
|
369 |
vinfo = _this->gl_data->glXChooseVisual(display, screen, attribs);
|
slouken@1952
|
370 |
}
|
slouken@1952
|
371 |
#endif
|
slouken@1952
|
372 |
if (!vinfo) {
|
slouken@1952
|
373 |
SDL_SetError("Couldn't find matching GLX visual");
|
slouken@1952
|
374 |
}
|
slouken@1952
|
375 |
return vinfo;
|
slouken@1952
|
376 |
}
|
slouken@1952
|
377 |
|
slouken@1952
|
378 |
SDL_GLContext
|
slouken@1952
|
379 |
X11_GL_CreateContext(_THIS, SDL_Window * window)
|
slouken@1952
|
380 |
{
|
slouken@1952
|
381 |
SDL_WindowData *data = (SDL_WindowData *) window->driverdata;
|
slouken@1952
|
382 |
Display *display = data->videodata->display;
|
slouken@1952
|
383 |
int screen =
|
slouken@3013
|
384 |
((SDL_DisplayData *) SDL_GetDisplayFromWindow(window)->
|
slouken@3013
|
385 |
driverdata)->screen;
|
slouken@1952
|
386 |
XWindowAttributes xattr;
|
slouken@1952
|
387 |
XVisualInfo v, *vinfo;
|
slouken@1952
|
388 |
int n;
|
slouken@1952
|
389 |
GLXContext context = NULL;
|
slouken@1952
|
390 |
|
slouken@1955
|
391 |
/* We do this to create a clean separation between X and GLX errors. */
|
slouken@1952
|
392 |
XSync(display, False);
|
slouken@1952
|
393 |
XGetWindowAttributes(display, data->window, &xattr);
|
slouken@1952
|
394 |
v.screen = screen;
|
slouken@1952
|
395 |
v.visualid = XVisualIDFromVisual(xattr.visual);
|
slouken@1952
|
396 |
vinfo = XGetVisualInfo(display, VisualScreenMask | VisualIDMask, &v, &n);
|
slouken@1952
|
397 |
if (vinfo) {
|
slouken@3100
|
398 |
if (_this->gl_config.major_version < 3) {
|
slouken@3100
|
399 |
context =
|
slouken@3100
|
400 |
_this->gl_data->glXCreateContext(display, vinfo, NULL, True);
|
slouken@3100
|
401 |
} else {
|
slouken@3100
|
402 |
/* If we want a GL 3.0 context or later we need to get a temporary
|
slouken@3100
|
403 |
context to grab the new context creation function */
|
slouken@3100
|
404 |
GLXContext temp_context = _this->gl_data->glXCreateContext(display, vinfo, NULL, True);
|
slouken@3100
|
405 |
if (!temp_context) {
|
slouken@3100
|
406 |
SDL_SetError("Could not create GL context");
|
slouken@3100
|
407 |
return NULL;
|
slouken@3100
|
408 |
} else {
|
slouken@3100
|
409 |
int attribs[] = {
|
slouken@3100
|
410 |
GLX_CONTEXT_MAJOR_VERSION_ARB, _this->gl_config.major_version,
|
slouken@3100
|
411 |
GLX_CONTEXT_MINOR_VERSION_ARB, _this->gl_config.minor_version,
|
slouken@3100
|
412 |
0
|
slouken@3100
|
413 |
};
|
slouken@3100
|
414 |
|
slouken@3100
|
415 |
/* Get a pointer to the context creation function for GL 3.0 */
|
slouken@3100
|
416 |
PFNGLXCREATECONTEXTATTRIBSARBPROC glXCreateContextAttribs = (PFNGLXCREATECONTEXTATTRIBSARBPROC)glXGetProcAddress((GLubyte*)"glXCreateContextAttribsARB");
|
slouken@3100
|
417 |
if (!glXCreateContextAttribs) {
|
slouken@3100
|
418 |
SDL_SetError("GL 3.x is not supported");
|
slouken@3100
|
419 |
context = temp_context;
|
slouken@3100
|
420 |
} else {
|
slouken@3100
|
421 |
/* Create a GL 3.0 context */
|
slouken@3100
|
422 |
GLXFBConfig *framebuffer_config = NULL;
|
slouken@3100
|
423 |
int fbcount = 0;
|
slouken@3100
|
424 |
framebuffer_config = glXChooseFBConfig(display, DefaultScreen(display), NULL, &fbcount);
|
slouken@3100
|
425 |
if (!framebuffer_config) {
|
slouken@3100
|
426 |
SDL_SetError("No good framebuffers found. GL 3.0 disabled");
|
slouken@3100
|
427 |
context = temp_context;
|
slouken@3100
|
428 |
} else {
|
slouken@3100
|
429 |
context = glXCreateContextAttribs(display, framebuffer_config[0], NULL, True, attribs);
|
slouken@3100
|
430 |
glXDestroyContext(display, temp_context);
|
slouken@3100
|
431 |
}
|
slouken@3100
|
432 |
}
|
slouken@3100
|
433 |
}
|
slouken@3100
|
434 |
}
|
slouken@1952
|
435 |
XFree(vinfo);
|
slouken@1952
|
436 |
}
|
slouken@1952
|
437 |
XSync(display, False);
|
slouken@1952
|
438 |
|
slouken@1952
|
439 |
if (!context) {
|
slouken@1952
|
440 |
SDL_SetError("Could not create GL context");
|
slouken@2178
|
441 |
return NULL;
|
slouken@1952
|
442 |
}
|
slouken@2178
|
443 |
|
slouken@2178
|
444 |
if (X11_GL_MakeCurrent(_this, window, context) < 0) {
|
slouken@2178
|
445 |
X11_GL_DeleteContext(_this, context);
|
slouken@2178
|
446 |
return NULL;
|
slouken@2178
|
447 |
}
|
slouken@2178
|
448 |
|
slouken@2178
|
449 |
return context;
|
slouken@1952
|
450 |
}
|
slouken@1952
|
451 |
|
slouken@1952
|
452 |
int
|
slouken@1952
|
453 |
X11_GL_MakeCurrent(_THIS, SDL_Window * window, SDL_GLContext context)
|
slouken@1952
|
454 |
{
|
slouken@1952
|
455 |
Display *display = ((SDL_VideoData *) _this->driverdata)->display;
|
slouken@1952
|
456 |
Window drawable =
|
slouken@1952
|
457 |
(window ? ((SDL_WindowData *) window->driverdata)->window : None);
|
slouken@1952
|
458 |
GLXContext glx_context = (GLXContext) context;
|
slouken@1952
|
459 |
int status;
|
slouken@1952
|
460 |
|
slouken@1952
|
461 |
status = 0;
|
slouken@1952
|
462 |
if (!_this->gl_data->glXMakeCurrent(display, drawable, glx_context)) {
|
slouken@1952
|
463 |
SDL_SetError("Unable to make GL context current");
|
slouken@1952
|
464 |
status = -1;
|
slouken@1952
|
465 |
}
|
slouken@1952
|
466 |
XSync(display, False);
|
slouken@1952
|
467 |
|
slouken@1952
|
468 |
return (status);
|
slouken@1952
|
469 |
}
|
slouken@1952
|
470 |
|
bob@2327
|
471 |
/*
|
bob@2327
|
472 |
0 is a valid argument to glxSwapIntervalMESA and setting it to 0
|
bob@2327
|
473 |
with the MESA version of the extension will undo the effect of a
|
bob@2327
|
474 |
previous call with a value that is greater than zero (or at least
|
bob@2327
|
475 |
that is what the FM says. OTOH, 0 is an invalid argument to
|
bob@2327
|
476 |
glxSwapIntervalSGI and it returns an error if you call it with 0 as
|
bob@2327
|
477 |
an argument.
|
bob@2327
|
478 |
*/
|
bob@2327
|
479 |
|
bob@2327
|
480 |
static int swapinterval = -1;
|
slouken@1952
|
481 |
int
|
slouken@1952
|
482 |
X11_GL_SetSwapInterval(_THIS, int interval)
|
slouken@1952
|
483 |
{
|
slouken@1952
|
484 |
int status;
|
slouken@1952
|
485 |
|
slouken@1952
|
486 |
if (_this->gl_data->glXSwapIntervalMESA) {
|
slouken@1952
|
487 |
status = _this->gl_data->glXSwapIntervalMESA(interval);
|
slouken@1952
|
488 |
if (status != 0) {
|
slouken@1952
|
489 |
SDL_SetError("glxSwapIntervalMESA failed");
|
slouken@1952
|
490 |
status = -1;
|
bob@2327
|
491 |
} else {
|
bob@2327
|
492 |
swapinterval = interval;
|
slouken@1952
|
493 |
}
|
slouken@1952
|
494 |
} else if (_this->gl_data->glXSwapIntervalSGI) {
|
slouken@1952
|
495 |
status = _this->gl_data->glXSwapIntervalSGI(interval);
|
slouken@1952
|
496 |
if (status != 0) {
|
slouken@1952
|
497 |
SDL_SetError("glxSwapIntervalSGI failed");
|
slouken@1952
|
498 |
status = -1;
|
bob@2327
|
499 |
} else {
|
bob@2327
|
500 |
swapinterval = interval;
|
slouken@1952
|
501 |
}
|
slouken@1952
|
502 |
} else {
|
slouken@1952
|
503 |
SDL_Unsupported();
|
slouken@1952
|
504 |
status = -1;
|
slouken@1952
|
505 |
}
|
slouken@1952
|
506 |
return status;
|
slouken@1952
|
507 |
}
|
slouken@1952
|
508 |
|
slouken@1952
|
509 |
int
|
slouken@1952
|
510 |
X11_GL_GetSwapInterval(_THIS)
|
slouken@1952
|
511 |
{
|
slouken@1952
|
512 |
if (_this->gl_data->glXGetSwapIntervalMESA) {
|
slouken@1952
|
513 |
return _this->gl_data->glXGetSwapIntervalMESA();
|
slouken@1952
|
514 |
} else {
|
bob@2327
|
515 |
return swapinterval;
|
slouken@1952
|
516 |
}
|
slouken@1952
|
517 |
}
|
slouken@1952
|
518 |
|
slouken@1952
|
519 |
void
|
slouken@1952
|
520 |
X11_GL_SwapWindow(_THIS, SDL_Window * window)
|
slouken@1952
|
521 |
{
|
slouken@1952
|
522 |
SDL_WindowData *data = (SDL_WindowData *) window->driverdata;
|
slouken@1952
|
523 |
Display *display = data->videodata->display;
|
slouken@1952
|
524 |
|
slouken@1952
|
525 |
_this->gl_data->glXSwapBuffers(display, data->window);
|
slouken@1952
|
526 |
}
|
slouken@1952
|
527 |
|
slouken@1952
|
528 |
void
|
slouken@1952
|
529 |
X11_GL_DeleteContext(_THIS, SDL_GLContext context)
|
slouken@1952
|
530 |
{
|
slouken@1952
|
531 |
Display *display = ((SDL_VideoData *) _this->driverdata)->display;
|
slouken@1952
|
532 |
GLXContext glx_context = (GLXContext) context;
|
slouken@1952
|
533 |
|
slouken@1952
|
534 |
_this->gl_data->glXDestroyContext(display, glx_context);
|
bob@2324
|
535 |
XSync(display, False);
|
slouken@1952
|
536 |
}
|
slouken@1952
|
537 |
|
slouken@1952
|
538 |
#endif /* SDL_VIDEO_OPENGL_GLX */
|
slouken@1952
|
539 |
|
slouken@1952
|
540 |
/* vi: set ts=4 sw=4 expandtab: */
|