/* Function: al_create_event_queue */ ALLEGRO_EVENT_QUEUE *al_create_event_queue(void) { ALLEGRO_EVENT_QUEUE *queue = al_malloc(sizeof *queue); ASSERT(queue); if (queue) { _al_vector_init(&queue->sources, sizeof(ALLEGRO_EVENT_SOURCE *)); _al_vector_init(&queue->events, sizeof(ALLEGRO_EVENT)); _al_vector_alloc_back(&queue->events); queue->events_head = 0; queue->events_tail = 0; queue->paused = false; _AL_MARK_MUTEX_UNINITED(queue->mutex); _al_mutex_init(&queue->mutex); _al_cond_init(&queue->cond); _al_register_destructor(_al_dtor_list, "queue", queue, (void (*)(void *)) al_destroy_event_queue); } return queue; }
/* Function: al_create_cond */ ALLEGRO_COND *al_create_cond(void) { ALLEGRO_COND *cond = al_malloc(sizeof(*cond)); if (cond) { _al_cond_init(&cond->cond); } return cond; }
/* Function: al_create_thread_with_stacksize */ ALLEGRO_THREAD *al_create_thread_with_stacksize( void *(*proc)(ALLEGRO_THREAD *thread, void *arg), void *arg, size_t stacksize) { ALLEGRO_THREAD *outer = create_thread(); outer->thread_state = THREAD_STATE_CREATED; _al_mutex_init(&outer->mutex); _al_cond_init(&outer->cond); outer->arg = arg; outer->proc = proc; _al_thread_create_with_stacksize(&outer->thread, thread_func_trampoline, outer, stacksize); /* XXX _al_thread_create should return an error code */ return outer; }
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"); } return &s->system; }
/* Create a new system object for the dummy X11 driver. */ 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) { ALLEGRO_ERROR("XOpenDisplay failed.\n"); return NULL; } /* Never ask. */ gfxdisplay = XOpenDisplay(0); if (!gfxdisplay) { ALLEGRO_ERROR("XOpenDisplay failed.\n"); XCloseDisplay(x11display); return NULL; } _al_unix_init_time(); s = _AL_MALLOC(sizeof *s); memset(s, 0, sizeof *s); /* We need to put *some* atom into the ClientMessage we send for * faking mouse movements with al_set_mouse_xy - so lets ask X11 * for one here. */ s->AllegroAtom = XInternAtom(x11display, "AllegroAtom", False); _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->gfxdisplay = gfxdisplay; s->x11display = x11display; s->system.vt = xglx_vt; 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)); #ifdef ALLEGRO_XWINDOWS_WITH_XINERAMA _al_xsys_xinerama_init(s); #endif _al_xglx_store_video_mode(s); _al_thread_create(&s->thread, xglx_background_thread, s); ALLEGRO_INFO("events thread spawned.\n"); return &s->system; }
/* 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; }