/* Create a new X11 display, which maps directly to a GLX window. */
static ALLEGRO_DISPLAY *xdpy_create_display(int w, int h)
{
ALLEGRO_SYSTEM_XGLX *system = (void *)al_get_system_driver();
int adapter = al_get_new_display_adapter();
if (system->x11display == NULL) {
ALLEGRO_WARN("Not connected to X server.\n");
return NULL;
}
if (w <= 0 || h <= 0) {
ALLEGRO_ERROR("Invalid window size %dx%d\n", w, h);
return NULL;
}
_al_mutex_lock(&system->lock);
ALLEGRO_DISPLAY_XGLX *d = al_calloc(1, sizeof *d);
ALLEGRO_DISPLAY *display = (void*)d;
ALLEGRO_OGL_EXTRAS *ogl = al_calloc(1, sizeof *ogl);
display->ogl_extras = ogl;
int major, minor;
glXQueryVersion(system->x11display, &major, &minor);
d->glx_version = major * 100 + minor * 10;
ALLEGRO_INFO("GLX %.1f.\n", d->glx_version / 100.f);
display->w = w;
display->h = h;
display->vt = _al_display_xglx_driver();
display->refresh_rate = al_get_new_display_refresh_rate();
display->flags = al_get_new_display_flags();
// FIXME: default? Is this the right place to set this?
display->flags |= ALLEGRO_OPENGL;
// store our initial virtual adapter, used by fullscreen and positioning code
d->adapter = adapter;
ALLEGRO_DEBUG("selected adapter %i\n", adapter);
if (d->adapter < 0) {
d->adapter = _al_xglx_get_default_adapter(system);
}
_al_xglx_use_adapter(system, d->adapter);
/* if we're in multi-head X mode, bail if we try to use more than one display
* as there are bugs in X/glX that cause us to hang in X if we try to use more than one. */
/* if we're in real xinerama mode, also bail, x makes mouse use evil */
bool true_xinerama_active = false;
#ifdef ALLEGRO_XWINDOWS_WITH_XINERAMA
bool xrandr_active = false;
#ifdef ALLEGRO_XWINDOWS_WITH_XRANDR
xrandr_active = system->xrandr_available;
#endif
true_xinerama_active = !xrandr_active && system->xinerama_available;
#endif
if ((true_xinerama_active || ScreenCount(system->x11display) > 1) && system->adapter_use_count) {
uint32_t i, adapter_use_count = 0;
for (i = 0; i < 32; i++) {
if (system->adapter_map[i])
adapter_use_count++;
}
if (adapter_use_count > 1) {
ALLEGRO_ERROR("Use of more than one adapter at once in multi-head X or X with true Xinerama active is not possible.\n");
al_free(d);
al_free(ogl);
_al_mutex_unlock(&system->lock);
return NULL;
}
}
ALLEGRO_DEBUG("xdpy: selected adapter %i\n", d->adapter);
// store or initial X Screen, used by window creation, fullscreen, and glx visual code
d->xscreen = _al_xglx_get_xscreen(system, d->adapter);
ALLEGRO_DEBUG("xdpy: selected xscreen %i\n", d->xscreen);
d->is_mapped = false;
_al_cond_init(&d->mapped);
d->resize_count = 0;
d->programmatic_resize = false;
_al_xglx_config_select_visual(d);
if (!d->xvinfo) {
ALLEGRO_ERROR("FIXME: Need better visual selection.\n");
ALLEGRO_ERROR("No matching visual found.\n");
al_free(d);
al_free(ogl);
_al_mutex_unlock(&system->lock);
return NULL;
}
ALLEGRO_INFO("Selected X11 visual %lu.\n", d->xvinfo->visualid);
/* Add ourself to the list of displays. */
ALLEGRO_DISPLAY_XGLX **add;
add = _al_vector_alloc_back(&system->system.displays);
*add = d;
/* Each display is an event source. */
_al_event_source_init(&display->es);
/* Create a colormap. */
Colormap cmap = XCreateColormap(system->x11display,
RootWindow(system->x11display, d->xvinfo->screen),
d->xvinfo->visual, AllocNone);
/* Create an X11 window */
XSetWindowAttributes swa;
int mask = CWBorderPixel | CWColormap | CWEventMask;
swa.colormap = cmap;
swa.border_pixel = 0;
swa.event_mask =
KeyPressMask |
KeyReleaseMask |
StructureNotifyMask |
EnterWindowMask |
LeaveWindowMask |
FocusChangeMask |
ExposureMask |
PropertyChangeMask |
ButtonPressMask |
ButtonReleaseMask |
PointerMotionMask;
/* For a non-compositing window manager, a black background can look
* less broken if the application doesn't react to expose events fast
* enough. However in some cases like resizing, the black background
* causes horrible flicker.
*/
if (!(display->flags & ALLEGRO_RESIZABLE)) {
mask |= CWBackPixel;
swa.background_pixel = BlackPixel(system->x11display, d->xvinfo->screen);
}
int x_off = INT_MAX, y_off = INT_MAX;
if (display->flags & ALLEGRO_FULLSCREEN) {
_al_xglx_get_display_offset(system, d->adapter, &x_off, &y_off);
}
else {
/* we want new_display_adapter's offset to add to the new_window_position */
int xscr_x = 0, xscr_y = 0;
al_get_new_window_position(&x_off, &y_off);
if (adapter >= 0) {
/* non default adapter. I'm assuming this means the user wants the window to be placed on the adapter offset by new display pos */
_al_xglx_get_display_offset(system, d->adapter, &xscr_x, &xscr_y);
if (x_off != INT_MAX)
x_off += xscr_x;
if (y_off != INT_MAX)
y_off += xscr_y;
}
}
d->window = XCreateWindow(system->x11display,
RootWindow(system->x11display, d->xvinfo->screen),
x_off != INT_MAX ? x_off : 0,
y_off != INT_MAX ? y_off : 0,
w, h, 0, d->xvinfo->depth,
InputOutput, d->xvinfo->visual, mask, &swa);
// Try to set full screen mode if requested, fail if we can't
if (display->flags & ALLEGRO_FULLSCREEN) {
/* According to the spec, the window manager is supposed to disable
* window decorations when _NET_WM_STATE_FULLSCREEN is in effect.
* However, some WMs may not be fully compliant, e.g. Fluxbox.
*/
xdpy_set_frame(display, false);
_al_xglx_set_above(display, 1);
if (!_al_xglx_fullscreen_set_mode(system, d, w, h, 0, display->refresh_rate)) {
ALLEGRO_DEBUG("xdpy: failed to set fullscreen mode.\n");
xdpy_destroy_display(display);
_al_mutex_unlock(&system->lock);
return NULL;
}
//XSync(system->x11display, False);
}
if (display->flags & ALLEGRO_FRAMELESS) {
xdpy_set_frame(display, false);
}
ALLEGRO_DEBUG("X11 window created.\n");
_al_xwin_set_size_hints(display, x_off, y_off);
XLockDisplay(system->x11display);
d->wm_delete_window_atom = XInternAtom(system->x11display,
"WM_DELETE_WINDOW", False);
XSetWMProtocols(system->x11display, d->window, &d->wm_delete_window_atom, 1);
XMapWindow(system->x11display, d->window);
ALLEGRO_DEBUG("X11 window mapped.\n");
XUnlockDisplay(system->x11display);
/* Send the pending request to the X server. */
XSync(system->x11display, False);
/* To avoid race conditions where some X11 functions fail before the window
* is mapped, we wait here until it is mapped. Note that the thread is
* locked, so the event could not possibly have been processed yet in the
* events thread. So as long as no other map events occur, the condition
* should only be signalled when our window gets mapped.
*/
while (!d->is_mapped) {
_al_cond_wait(&d->mapped, &system->lock);
}
/* We can do this at any time, but if we already have a mapped
* window when switching to fullscreen it will use the same
* monitor (with the MetaCity version I'm using here right now).
*/
if ((display->flags & ALLEGRO_FULLSCREEN_WINDOW)) {
ALLEGRO_INFO("Toggling fullscreen flag for %d x %d window.\n",
display->w, display->h);
_al_xwin_reset_size_hints(display);
_al_xwin_set_fullscreen_window(display, 2);
_al_xwin_set_size_hints(display, INT_MAX, INT_MAX);
XWindowAttributes xwa;
XGetWindowAttributes(system->x11display, d->window, &xwa);
display->w = xwa.width;
display->h = xwa.height;
ALLEGRO_INFO("Using ALLEGRO_FULLSCREEN_WINDOW of %d x %d\n",
display->w, display->h);
}
if (display->flags & ALLEGRO_FULLSCREEN) {
/* kwin wants these here */
/* metacity wants these here too */
/* XXX compiz is quiky, can't seem to find a combination of hints that
* make sure we are layerd over panels, and are positioned properly */
//_al_xwin_set_fullscreen_window(display, 1);
_al_xglx_set_above(display, 1);
_al_xglx_fullscreen_to_display(system, d);
/* Grab mouse if we only have one display, ungrab it if we have more than
* one.
*/
if (_al_vector_size(&system->system.displays) == 1) {
al_grab_mouse(display);
}
else if (_al_vector_size(&system->system.displays) > 1) {
al_ungrab_mouse();
}
}
if (!_al_xglx_config_create_context(d)) {
xdpy_destroy_display(display);
_al_mutex_unlock(&system->lock);
return NULL;
}
/* Make our GLX context current for reading and writing in the current
* thread.
*/
if (d->fbc) {
if (!glXMakeContextCurrent(system->gfxdisplay, d->glxwindow,
d->glxwindow, d->context)) {
ALLEGRO_ERROR("glXMakeContextCurrent failed\n");
}
}
else {
if (!glXMakeCurrent(system->gfxdisplay, d->glxwindow, d->context)) {
ALLEGRO_ERROR("glXMakeCurrent failed\n");
}
}
_al_ogl_manage_extensions(display);
_al_ogl_set_extensions(ogl->extension_api);
/* Print out OpenGL version info */
ALLEGRO_INFO("OpenGL Version: %s\n", (const char*)glGetString(GL_VERSION));
ALLEGRO_INFO("Vendor: %s\n", (const char*)glGetString(GL_VENDOR));
ALLEGRO_INFO("Renderer: %s\n", (const char*)glGetString(GL_RENDERER));
if (display->ogl_extras->ogl_info.version < _ALLEGRO_OPENGL_VERSION_1_2) {
ALLEGRO_EXTRA_DISPLAY_SETTINGS *eds = _al_get_new_display_settings();
if (eds->required & (1<<ALLEGRO_COMPATIBLE_DISPLAY)) {
ALLEGRO_ERROR("Allegro requires at least OpenGL version 1.2 to work.\n");
xdpy_destroy_display(display);
_al_mutex_unlock(&system->lock);
return NULL;
}
display->extra_settings.settings[ALLEGRO_COMPATIBLE_DISPLAY] = 0;
}
#if 0
// Apparently, you can get a OpenGL 3.0 context without specifically creating
// it with glXCreateContextAttribsARB, and not every OpenGL 3.0 is evil, but we
// can't tell the difference at this stage.
else if (display->ogl_extras->ogl_info.version > _ALLEGRO_OPENGL_VERSION_2_1) {
/* We don't have OpenGL3 a driver. */
display->extra_settings.settings[ALLEGRO_COMPATIBLE_DISPLAY] = 0;
}
#endif
if (display->extra_settings.settings[ALLEGRO_COMPATIBLE_DISPLAY])
_al_ogl_setup_gl(display);
/* vsync */
/* Fill in the user setting. */
display->extra_settings.settings[ALLEGRO_VSYNC] =
_al_get_new_display_settings()->settings[ALLEGRO_VSYNC];
/* We set the swap interval to 0 if vsync is forced off, and to 1
* if it is forced on.
* http://www.opengl.org/registry/specs/SGI/swap_control.txt
* If the option is set to 0, we simply use the system default. The
* above extension specifies vsync on as default though, so in the
* end with GLX we can't force vsync on, just off.
*/
ALLEGRO_DEBUG("requested vsync=%d.\n",
display->extra_settings.settings[ALLEGRO_VSYNC]);
if (display->extra_settings.settings[ALLEGRO_VSYNC]) {
if (display->ogl_extras->extension_list->ALLEGRO_GLX_SGI_swap_control) {
int x = 1;
if (display->extra_settings.settings[ALLEGRO_VSYNC] == 2)
x = 0;
if (glXSwapIntervalSGI(x)) {
ALLEGRO_WARN("glXSwapIntervalSGI(%d) failed.\n", x);
}
}
else {
ALLEGRO_WARN("no vsync, GLX_SGI_swap_control missing.\n");
/* According to the specification that means it's on, but
* the driver might have disabled it. So we do not know.
*/
display->extra_settings.settings[ALLEGRO_VSYNC] = 0;
}
}
d->invisible_cursor = None; /* Will be created on demand. */
d->current_cursor = None; /* Initially, we use the root cursor. */
d->cursor_hidden = false;
d->icon = None;
d->icon_mask = None;
_al_mutex_unlock(&system->lock);
return display;
}
static ALLEGRO_DISPLAY_XGLX *xdpy_create_display_locked(
ALLEGRO_SYSTEM_XGLX *system, int flags, int w, int h, int adapter)
{
ALLEGRO_DISPLAY_XGLX *d = al_calloc(1, sizeof *d);
ALLEGRO_DISPLAY *display = (ALLEGRO_DISPLAY *)d;
ALLEGRO_OGL_EXTRAS *ogl = al_calloc(1, sizeof *ogl);
display->ogl_extras = ogl;
d->glx_version = query_glx_version(system);
display->w = w;
display->h = h;
display->vt = _al_display_xglx_driver();
display->refresh_rate = al_get_new_display_refresh_rate();
display->flags = flags;
// FIXME: default? Is this the right place to set this?
display->flags |= ALLEGRO_OPENGL;
/* Store our initial virtual adapter, used by fullscreen and positioning
* code.
*/
ALLEGRO_DEBUG("selected adapter %i\n", adapter);
if (adapter < 0)
d->adapter = _al_xglx_get_default_adapter(system);
else
d->adapter = adapter;
ALLEGRO_DEBUG("xdpy: selected adapter %i\n", d->adapter);
_al_xglx_use_adapter(system, d->adapter);
if (!check_adapter_use_count(system)) {
goto EarlyError;
}
/* Store our initial X Screen, used by window creation, fullscreen, and glx
* visual code.
*/
d->xscreen = _al_xglx_get_xscreen(system, d->adapter);
ALLEGRO_DEBUG("xdpy: selected xscreen %i\n", d->xscreen);
d->wm_delete_window_atom = None;
d->is_mapped = false;
_al_cond_init(&d->mapped);
d->is_selectioned = false;
_al_cond_init(&d->selectioned);
d->resize_count = 0;
d->programmatic_resize = false;
_al_xglx_config_select_visual(d);
if (!d->xvinfo) {
ALLEGRO_ERROR("FIXME: Need better visual selection.\n");
ALLEGRO_ERROR("No matching visual found.\n");
goto EarlyError;
}
ALLEGRO_INFO("Selected X11 visual %lu.\n", d->xvinfo->visualid);
/* Add ourself to the list of displays. */
ALLEGRO_DISPLAY_XGLX **add;
add = _al_vector_alloc_back(&system->system.displays);
*add = d;
/* Each display is an event source. */
_al_event_source_init(&display->es);
if (!xdpy_create_display_window(system, d, w, h, adapter)) {
goto LateError;
}
/* Send any pending requests to the X server.
* This is necessary to make the window ID immediately valid
* for a GtkSocket.
*/
XSync(system->x11display, False);
if (display->flags & ALLEGRO_GTK_TOPLEVEL_INTERNAL) {
ASSERT(gtk_override_vt);
if (!gtk_override_vt->create_display_hook(display, w, h)) {
goto LateError;
}
}
else {
default_overridable_vt.set_window_title(display, al_get_new_window_title());
if (!default_overridable_vt.create_display_hook(display, w, h)) {
goto LateError;
}
}
/* overridable_vt should be set by the create_display_hook. */
ASSERT(d->overridable_vt);
/* Send any pending requests to the X server. */
XSync(system->x11display, False);
/* To avoid race conditions where some X11 functions fail before the window
* is mapped, we wait here until it is mapped. Note that the thread is
* locked, so the event could not possibly have been processed yet in the
* events thread. So as long as no other map events occur, the condition
* should only be signalled when our window gets mapped.
*/
while (!d->is_mapped) {
_al_cond_wait(&d->mapped, &system->lock);
}
/* In tiling WMs, we might get resize events pretty much immediately after
* Window creation. This location seems to catch them reliably, tested with
* dwm, awesome, xmonad and i3. */
if ((display->flags & ALLEGRO_RESIZABLE) && d->resize_count > 0) {
xdpy_acknowledge_resize(display);
}
/* We can do this at any time, but if we already have a mapped
* window when switching to fullscreen it will use the same
* monitor (with the MetaCity version I'm using here right now).
*/
if ((display->flags & ALLEGRO_FULLSCREEN_WINDOW)) {
ALLEGRO_INFO("Toggling fullscreen flag for %d x %d window.\n",
display->w, display->h);
_al_xwin_reset_size_hints(display);
_al_xwin_set_fullscreen_window(display, 2);
_al_xwin_set_size_hints(display, INT_MAX, INT_MAX);
XWindowAttributes xwa;
XGetWindowAttributes(system->x11display, d->window, &xwa);
display->w = xwa.width;
display->h = xwa.height;
ALLEGRO_INFO("Using ALLEGRO_FULLSCREEN_WINDOW of %d x %d\n",
display->w, display->h);
}
if (display->flags & ALLEGRO_FULLSCREEN) {
/* kwin wants these here */
/* metacity wants these here too */
/* XXX compiz is quiky, can't seem to find a combination of hints that
* make sure we are layerd over panels, and are positioned properly */
//_al_xwin_set_fullscreen_window(display, 1);
_al_xwin_set_above(display, 1);
_al_xglx_fullscreen_to_display(system, d);
/* Grab mouse if we only have one display, ungrab it if we have more than
* one.
*/
if (_al_vector_size(&system->system.displays) == 1) {
al_grab_mouse(display);
}
else if (_al_vector_size(&system->system.displays) > 1) {
al_ungrab_mouse();
}
}
if (flags & ALLEGRO_MAXIMIZED) {
_al_xwin_maximize(display, true);
}
if (!_al_xglx_config_create_context(d)) {
goto LateError;
}
/* Make our GLX context current for reading and writing in the current
* thread.
*/
if (d->fbc) {
if (!glXMakeContextCurrent(system->gfxdisplay, d->glxwindow,
d->glxwindow, d->context)) {
ALLEGRO_ERROR("glXMakeContextCurrent failed\n");
}
}
else {
if (!glXMakeCurrent(system->gfxdisplay, d->glxwindow, d->context)) {
ALLEGRO_ERROR("glXMakeCurrent failed\n");
}
}
_al_ogl_manage_extensions(display);
_al_ogl_set_extensions(ogl->extension_api);
/* Print out OpenGL version info */
ALLEGRO_INFO("OpenGL Version: %s\n", (const char*)glGetString(GL_VERSION));
ALLEGRO_INFO("Vendor: %s\n", (const char*)glGetString(GL_VENDOR));
ALLEGRO_INFO("Renderer: %s\n", (const char*)glGetString(GL_RENDERER));
if (display->ogl_extras->ogl_info.version < _ALLEGRO_OPENGL_VERSION_1_2) {
ALLEGRO_EXTRA_DISPLAY_SETTINGS *eds = _al_get_new_display_settings();
if (eds->required & (1<<ALLEGRO_COMPATIBLE_DISPLAY)) {
ALLEGRO_ERROR("Allegro requires at least OpenGL version 1.2 to work.\n");
goto LateError;
}
display->extra_settings.settings[ALLEGRO_COMPATIBLE_DISPLAY] = 0;
}
if (display->extra_settings.settings[ALLEGRO_COMPATIBLE_DISPLAY])
_al_ogl_setup_gl(display);
/* vsync */
int vsync_setting = _al_get_new_display_settings()->settings[ALLEGRO_VSYNC];
vsync_setting = xdpy_swap_control(display, vsync_setting);
display->extra_settings.settings[ALLEGRO_VSYNC] = vsync_setting;
d->invisible_cursor = None; /* Will be created on demand. */
d->current_cursor = None; /* Initially, we use the root cursor. */
d->cursor_hidden = false;
d->icon = None;
d->icon_mask = None;
return d;
EarlyError:
al_free(d);
al_free(ogl);
return NULL;
LateError:
xdpy_destroy_display(display);
return NULL;
}