static ALLEGRO_DISPLAY_INTERFACE *xglx_get_display_driver(void)
{
ALLEGRO_SYSTEM_XGLX *system = (ALLEGRO_SYSTEM_XGLX *)al_get_system_driver();
/* Look up the toggle_mouse_grab_key binding. This isn't such a great place
* to do it, but the config file is not available until after the system driver
* is initialised.
*/
if (!system->toggle_mouse_grab_keycode) {
const char *binding = al_get_config_value(al_get_system_config(),
"keyboard", "toggle_mouse_grab_key");
if (binding) {
system->toggle_mouse_grab_keycode = _al_parse_key_binding(binding,
&system->toggle_mouse_grab_modifiers);
if (system->toggle_mouse_grab_keycode) {
ALLEGRO_DEBUG("Toggle mouse grab key: '%s'\n", binding);
}
else {
ALLEGRO_WARN("Cannot parse key binding '%s'\n", binding);
}
}
}
return _al_display_xglx_driver();
}
static ALLEGRO_DISPLAY_INTERFACE *win_get_display_driver(void)
{
const int flags = al_get_new_display_flags();
ALLEGRO_SYSTEM *sys = al_get_system_driver();
ALLEGRO_CONFIG *sys_cfg = al_get_system_config();
ALLEGRO_SYSTEM_WIN *syswin = (ALLEGRO_SYSTEM_WIN *)sys;
const char *s;
/* Look up the toggle_mouse_grab_key binding. This isn't such a great place
* to do it, but the config file is not available in win_initialize,
* and this is neutral between the D3D and OpenGL display drivers.
*/
if (!syswin->toggle_mouse_grab_keycode) {
const char *binding = al_get_config_value(sys_cfg, "keyboard",
"toggle_mouse_grab_key");
if (binding) {
syswin->toggle_mouse_grab_keycode = _al_parse_key_binding(binding,
&syswin->toggle_mouse_grab_modifiers);
if (syswin->toggle_mouse_grab_keycode) {
ALLEGRO_DEBUG("Toggle mouse grab key: '%s'\n", binding);
}
else {
ALLEGRO_WARN("Cannot parse key binding '%s'\n", binding);
}
}
}
/* Programmatic selection. */
#ifdef ALLEGRO_CFG_D3D
if (flags & ALLEGRO_DIRECT3D_INTERNAL) {
ALLEGRO_DISPLAY_INTERFACE* iface = _al_display_d3d_driver();
if (iface == NULL)
ALLEGRO_WARN("Direct3D graphics driver not available.\n");
return iface;
}
#endif
#ifdef ALLEGRO_CFG_OPENGL
if (flags & ALLEGRO_OPENGL) {
return _al_display_wgl_driver();
}
#endif
/* Selection by configuration file. The configuration value is non-binding.
* The user may unknowingly set a value which was configured out at compile
* time. The value should have no effect instead of causing a failure.
*/
s = al_get_config_value(sys_cfg, "graphics", "driver");
if (s) {
ALLEGRO_DEBUG("Configuration value graphics.driver = %s\n", s);
if (0 == _al_stricmp(s, "DIRECT3D") || 0 == _al_stricmp(s, "D3D")) {
#ifdef ALLEGRO_CFG_D3D
ALLEGRO_DISPLAY_INTERFACE* iface = _al_display_d3d_driver();
if (iface != NULL) {
al_set_new_display_flags(flags | ALLEGRO_DIRECT3D_INTERNAL);
return iface;
}
#endif
}
else if (0 == _al_stricmp(s, "OPENGL")) {
#ifdef ALLEGRO_CFG_OPENGL
al_set_new_display_flags(flags | ALLEGRO_OPENGL);
return _al_display_wgl_driver();
#endif
}
else if (0 != _al_stricmp(s, "DEFAULT")) {
ALLEGRO_WARN("Graphics driver selection unrecognised: %s\n", s);
}
}
/* Automatic graphics driver selection. */
/* XXX is implicitly setting new_display_flags the desired behaviour? */
#ifdef ALLEGRO_CFG_D3D
{
ALLEGRO_DISPLAY_INTERFACE* iface = _al_display_d3d_driver();
if (iface != NULL) {
al_set_new_display_flags(flags | ALLEGRO_DIRECT3D_INTERNAL);
return iface;
}
}
#endif
#ifdef ALLEGRO_CFG_OPENGL
{
al_set_new_display_flags(flags | ALLEGRO_OPENGL);
return _al_display_wgl_driver();
}
#endif
ALLEGRO_WARN("No graphics driver available.\n");
return NULL;
}
static ALLEGRO_SYSTEM *xglx_initialize(int flags)
{
Display *x11display;
Display *gfxdisplay;
ALLEGRO_SYSTEM_XGLX *s;
(void)flags;
#ifdef DEBUG_X11
_Xdebug = 1;
#endif
XInitThreads();
/* Get an X11 display handle. */
x11display = XOpenDisplay(0);
if (x11display) {
/* Never ask. */
gfxdisplay = XOpenDisplay(0);
if (!gfxdisplay) {
ALLEGRO_ERROR("XOpenDisplay failed second time.\n");
XCloseDisplay(x11display);
return NULL;
}
}
else {
ALLEGRO_INFO("XOpenDisplay failed; assuming headless mode.\n");
gfxdisplay = NULL;
}
_al_unix_init_time();
s = al_calloc(1, sizeof *s);
_al_mutex_init_recursive(&s->lock);
_al_cond_init(&s->resized);
s->inhibit_screensaver = false;
_al_vector_init(&s->system.displays, sizeof (ALLEGRO_DISPLAY_XGLX *));
s->system.vt = xglx_vt;
s->gfxdisplay = gfxdisplay;
s->x11display = x11display;
if (s->x11display) {
ALLEGRO_INFO("XGLX driver connected to X11 (%s %d).\n",
ServerVendor(s->x11display), VendorRelease(s->x11display));
ALLEGRO_INFO("X11 protocol version %d.%d.\n",
ProtocolVersion(s->x11display), ProtocolRevision(s->x11display));
/* We need to put *some* atom into the ClientMessage we send for
* faking mouse movements with al_set_mouse_xy - so let's ask X11
* for one here.
*/
s->AllegroAtom = XInternAtom(x11display, "AllegroAtom", False);
/* Message type for XEmbed protocol. */
s->XEmbedAtom = XInternAtom(x11display, "_XEMBED", False);
_al_thread_create(&s->xevents_thread, _al_xwin_background_thread, s);
s->have_xevents_thread = true;
ALLEGRO_INFO("events thread spawned.\n");
}
const char *binding = al_get_config_value(al_get_system_config(),
"keyboard", "toggle_mouse_grab_key");
if (binding) {
s->toggle_mouse_grab_keycode = _al_parse_key_binding(binding,
&s->toggle_mouse_grab_modifiers);
if (s->toggle_mouse_grab_keycode) {
ALLEGRO_DEBUG("Toggle mouse grab key: '%s'\n", binding);
}
else {
ALLEGRO_WARN("Cannot parse key binding '%s'\n", binding);
}
}
#ifdef ALLEGRO_XWINDOWS_WITH_XPM
x11_xpm = icon_xpm;
#endif
return &s->system;
}