4 * An object oriented GL/GLES Abstraction/Utility Layer
6 * Copyright (C) 2008,2009,2010 Intel Corporation.
8 * This library is free software; you can redistribute it and/or
9 * modify it under the terms of the GNU Lesser General Public
10 * License as published by the Free Software Foundation; either
11 * version 2 of the License, or (at your option) any later version.
13 * This library is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16 * Lesser General Public License for more details.
18 * You should have received a copy of the GNU Lesser General Public
19 * License along with this library; if not, write to the
20 * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
21 * Boston, MA 02111-1307, USA.
24 * Robert Bragg <robert@linux.intel.com>
31 #include "cogl-xlib-renderer.h"
32 #include "cogl-util.h"
33 #include "cogl-internal.h"
34 #include "cogl-object.h"
36 #include "cogl-renderer-private.h"
37 #include "cogl-xlib-renderer-private.h"
38 #include "cogl-x11-renderer-private.h"
39 #include "cogl-winsys-private.h"
42 #include <X11/extensions/Xdamage.h>
46 static char *_cogl_x11_display_name = NULL;
47 static GList *_cogl_xlib_renderers = NULL;
50 destroy_xlib_renderer_data (void *user_data)
52 g_slice_free (CoglXlibRenderer, user_data);
56 _cogl_xlib_renderer_get_data (CoglRenderer *renderer)
58 static CoglUserDataKey key;
59 CoglXlibRenderer *data;
61 /* Constructs a CoglXlibRenderer struct on demand and attaches it to
62 the object using user data. It's done this way instead of using a
63 subclassing hierarchy in the winsys data because all EGL winsys's
64 need the EGL winsys data but only one of them wants the Xlib
67 data = cogl_object_get_user_data (COGL_OBJECT (renderer), &key);
71 data = g_slice_new0 (CoglXlibRenderer);
73 cogl_object_set_user_data (COGL_OBJECT (renderer),
76 destroy_xlib_renderer_data);
83 register_xlib_renderer (CoglRenderer *renderer)
87 for (l = _cogl_xlib_renderers; l; l = l->next)
88 if (l->data == renderer)
91 _cogl_xlib_renderers = g_list_prepend (_cogl_xlib_renderers, renderer);
95 unregister_xlib_renderer (CoglRenderer *renderer)
97 _cogl_xlib_renderers = g_list_remove (_cogl_xlib_renderers, renderer);
100 static CoglRenderer *
101 get_renderer_for_xdisplay (Display *xdpy)
105 for (l = _cogl_xlib_renderers; l; l = l->next)
107 CoglRenderer *renderer = l->data;
108 CoglXlibRenderer *xlib_renderer =
109 _cogl_xlib_renderer_get_data (renderer);
111 if (xlib_renderer->xdpy == xdpy)
119 error_handler (Display *xdpy,
122 CoglRenderer *renderer;
123 CoglXlibRenderer *xlib_renderer;
125 renderer = get_renderer_for_xdisplay (xdpy);
127 xlib_renderer = _cogl_xlib_renderer_get_data (renderer);
128 g_assert (xlib_renderer->trap_state);
130 xlib_renderer->trap_state->trapped_error_code = error->error_code;
136 _cogl_xlib_renderer_trap_errors (CoglRenderer *renderer,
137 CoglXlibTrapState *state)
139 CoglXlibRenderer *xlib_renderer;
141 xlib_renderer = _cogl_xlib_renderer_get_data (renderer);
143 state->trapped_error_code = 0;
144 state->old_error_handler = XSetErrorHandler (error_handler);
146 state->old_state = xlib_renderer->trap_state;
147 xlib_renderer->trap_state = state;
151 _cogl_xlib_renderer_untrap_errors (CoglRenderer *renderer,
152 CoglXlibTrapState *state)
154 CoglXlibRenderer *xlib_renderer;
156 xlib_renderer = _cogl_xlib_renderer_get_data (renderer);
157 g_assert (state == xlib_renderer->trap_state);
159 XSetErrorHandler (state->old_error_handler);
161 xlib_renderer->trap_state = state->old_state;
163 return state->trapped_error_code;
167 assert_xlib_display (CoglRenderer *renderer, GError **error)
169 Display *xdpy = cogl_xlib_renderer_get_foreign_display (renderer);
170 CoglXlibRenderer *xlib_renderer = _cogl_xlib_renderer_get_data (renderer);
172 /* A foreign display may have already been set... */
175 xlib_renderer->xdpy = xdpy;
179 xdpy = XOpenDisplay (_cogl_x11_display_name);
184 COGL_RENDERER_ERROR_XLIB_DISPLAY_OPEN,
185 "Failed to open X Display %s", _cogl_x11_display_name);
189 xlib_renderer->xdpy = xdpy;
194 _cogl_xlib_renderer_connect (CoglRenderer *renderer, GError **error)
196 CoglXlibRenderer *xlib_renderer =
197 _cogl_xlib_renderer_get_data (renderer);
198 CoglX11Renderer *x11_renderer =
199 (CoglX11Renderer *) xlib_renderer;
202 if (!assert_xlib_display (renderer, error))
205 if (getenv ("COGL_X11_SYNC"))
206 XSynchronize (xlib_renderer->xdpy, TRUE);
208 /* Check whether damage events are supported on this display */
209 if (!XDamageQueryExtension (xlib_renderer->xdpy,
210 &x11_renderer->damage_base,
212 x11_renderer->damage_base = -1;
214 xlib_renderer->trap_state = NULL;
216 xlib_renderer->poll_fd.fd = ConnectionNumber (xlib_renderer->xdpy);
217 xlib_renderer->poll_fd.events = COGL_POLL_FD_EVENT_IN;
219 register_xlib_renderer (renderer);
225 _cogl_xlib_renderer_disconnect (CoglRenderer *renderer)
227 CoglXlibRenderer *xlib_renderer =
228 _cogl_xlib_renderer_get_data (renderer);
230 if (!renderer->foreign_xdpy && xlib_renderer->xdpy)
231 XCloseDisplay (xlib_renderer->xdpy);
233 unregister_xlib_renderer (renderer);
237 cogl_xlib_renderer_get_display (CoglRenderer *renderer)
239 CoglXlibRenderer *xlib_renderer;
241 _COGL_RETURN_VAL_IF_FAIL (cogl_is_renderer (renderer), NULL);
243 xlib_renderer = _cogl_xlib_renderer_get_data (renderer);
245 return xlib_renderer->xdpy;
249 cogl_xlib_renderer_handle_event (CoglRenderer *renderer,
252 return _cogl_renderer_handle_native_event (renderer, event);
256 cogl_xlib_renderer_add_filter (CoglRenderer *renderer,
257 CoglXlibFilterFunc func,
260 _cogl_renderer_add_native_filter (renderer,
261 (CoglNativeFilterFunc)func, data);
265 cogl_xlib_renderer_remove_filter (CoglRenderer *renderer,
266 CoglXlibFilterFunc func,
269 _cogl_renderer_remove_native_filter (renderer,
270 (CoglNativeFilterFunc)func, data);
274 _cogl_xlib_renderer_poll_get_info (CoglRenderer *renderer,
275 CoglPollFD **poll_fds,
279 CoglXlibRenderer *xlib_renderer = _cogl_xlib_renderer_get_data (renderer);
281 if (renderer->xlib_enable_event_retrieval)
284 *poll_fds = &xlib_renderer->poll_fd;
285 if (XPending (xlib_renderer->xdpy))
299 _cogl_xlib_renderer_poll_dispatch (CoglRenderer *renderer,
300 const CoglPollFD *poll_fds,
303 CoglXlibRenderer *xlib_renderer = _cogl_xlib_renderer_get_data (renderer);
305 if (renderer->xlib_enable_event_retrieval)
306 while (XPending (xlib_renderer->xdpy))
310 XNextEvent (xlib_renderer->xdpy, &xevent);
312 cogl_xlib_renderer_handle_event (renderer, &xevent);