static int win_get_num_display_modes(void)
{
int format = _al_deduce_color_format(_al_get_new_display_settings());
int refresh_rate = al_get_new_display_refresh_rate();
int flags = al_get_new_display_flags();
#if defined ALLEGRO_CFG_OPENGL
if (flags & ALLEGRO_OPENGL) {
return _al_wgl_get_num_display_modes(format, refresh_rate, flags);
}
#endif
#if defined ALLEGRO_CFG_D3D
return _al_d3d_get_num_display_modes(format, refresh_rate, flags);
#endif
return 0;
}
/* Create a new X11 display, which maps directly to a GLX window. */
static ALLEGRO_DISPLAY *gp2xwiz_create_display_fb(int w, int h)
{
(void)w;
(void)h;
/* Only one display allowed at a time */
if (set_gfx_mode)
return NULL;
lc_init_rest();
ALLEGRO_DISPLAY_GP2XWIZ_FB *d = _AL_MALLOC(sizeof *d);
ALLEGRO_DISPLAY *display = (void *)d;
memset(d, 0, sizeof *d);
ALLEGRO_SYSTEM_GP2XWIZ *system = (void *)al_get_system_driver();
display->w = 320;
display->h = 240;
display->vt = _al_display_gp2xwiz_framebuffer_driver();
display->refresh_rate = 60;
display->flags = al_get_new_display_flags();
display->flags |= ALLEGRO_FULLSCREEN;
/* Add ourself to the list of displays. */
ALLEGRO_DISPLAY_GP2XWIZ_FB **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 backbuffer and point it to the framebuffer */
al_set_new_bitmap_flags(ALLEGRO_MEMORY_BITMAP);
d->backbuffer = al_create_bitmap(320, 240);
d->screen_mem = d->backbuffer->memory;
d->backbuffer->memory = (unsigned char *)lc_fb1;
set_gfx_mode = true;
ALLEGRO_DEBUG("Display created successfully\n");
return display;
}
static ALLEGRO_DISPLAY_MODE *win_get_display_mode(int index,
ALLEGRO_DISPLAY_MODE *mode)
{
int format = _al_deduce_color_format(_al_get_new_display_settings());
int refresh_rate = al_get_new_display_refresh_rate();
int flags = al_get_new_display_flags();
#if defined ALLEGRO_CFG_OPENGL
if (flags & ALLEGRO_OPENGL) {
return _al_wgl_get_display_mode(index, format, refresh_rate, flags, mode);
}
#endif
#if defined ALLEGRO_CFG_D3D
return _al_d3d_get_display_mode(index, format, refresh_rate, flags, mode);
#endif
return NULL;
}
static ALLEGRO_DISPLAY* wgl_create_display(int w, int h)
{
ALLEGRO_SYSTEM_WIN *system = (ALLEGRO_SYSTEM_WIN *)al_get_system_driver();
ALLEGRO_DISPLAY_WGL **add;
ALLEGRO_DISPLAY_WGL *wgl_display = al_calloc(1, sizeof *wgl_display);
ALLEGRO_DISPLAY *ogl_display = (void*)wgl_display;
ALLEGRO_DISPLAY *display = (void*)ogl_display;
ALLEGRO_DISPLAY_WIN *win_disp = (ALLEGRO_DISPLAY_WIN *)display;
win_disp->adapter = _al_win_determine_adapter();
display->w = w;
display->h = h;
display->refresh_rate = al_get_new_display_refresh_rate();
display->flags = al_get_new_display_flags();
display->vt = &vt;
display->ogl_extras = al_calloc(1, sizeof(ALLEGRO_OGL_EXTRAS));
if (!create_display_internals(wgl_display)) {
al_free(display->ogl_extras);
al_free(display);
return NULL;
}
/* 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\n", (const char*)glGetString(GL_RENDERER));
/* Add ourself to the list of displays. */
add = _al_vector_alloc_back(&system->system.displays);
*add = wgl_display;
/* Each display is an event source. */
_al_event_source_init(&display->es);
_al_win_set_system_mouse_cursor(display, ALLEGRO_SYSTEM_MOUSE_CURSOR_ARROW);
_al_win_show_mouse_cursor(display);
return display;
}
/* 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 = (ALLEGRO_SYSTEM_XGLX *)al_get_system_driver();
ALLEGRO_DISPLAY_XGLX *display;
int flags;
int 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;
}
flags = al_get_new_display_flags();
if (flags & ALLEGRO_GTK_TOPLEVEL_INTERNAL) {
if (gtk_override_vt == NULL) {
ALLEGRO_ERROR("GTK requested but unavailable\n");
return NULL;
}
if (flags & ALLEGRO_FULLSCREEN) {
ALLEGRO_ERROR("GTK incompatible with fullscreen\n");
return NULL;
}
}
_al_mutex_lock(&system->lock);
adapter = al_get_new_display_adapter();
display = xdpy_create_display_locked(system, flags, w, h, adapter);
_al_mutex_unlock(&system->lock);
return (ALLEGRO_DISPLAY *)display;
}
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;
}
int main() {
//allegro stuff
ALLEGRO_DISPLAY *al_display;
ALLEGRO_EVENT_QUEUE *queue;
ALLEGRO_EVENT event;
ALLEGRO_TIMER *loop_timer;
int need_draw = 1;
//widgets
ALGUI_DISPLAY *display;
//other
ALGUI_SKIN *skin;
/**** INIT ****/
//init allegro
al_init();
al_install_keyboard();
al_install_mouse();
al_init_image_addon();
al_init_font_addon();
al_init_ttf_addon();
al_init_primitives_addon();
//init algui
algui_init();
/**** CREATE ALLEGRO RESOURCES ****/
//set flags
al_set_new_display_flags(al_get_new_display_flags() | ALLEGRO_GENERATE_EXPOSE_EVENTS | ALLEGRO_RESIZABLE | ALLEGRO_WINDOWED);
//create a al_display
al_display = al_create_display(640, 480);
assert(al_display);
//create timers and events
queue = al_create_event_queue();
loop_timer = al_create_timer(1.0 / 60.0);
al_register_event_source(queue, al_get_keyboard_event_source());
al_register_event_source(queue, al_get_mouse_event_source());
al_register_event_source(queue, al_get_display_event_source(al_display));
al_register_event_source(queue, al_get_timer_event_source(loop_timer));
/**** CREATE WIDGETS ****/
//create the display widget
display = algui_create_display();
algui_resize_widget(algui_get_display_widget(display), 640, 480);
//skin widgets
skin = algui_load_skin("test/test-skin/test-skin.txt");
algui_skin_widget(algui_get_display_widget(display), skin);
/**** MANAGE EVENTS ****/
//event loop
al_start_timer(loop_timer);
for(;;) {
//wait for event
al_wait_for_event(queue, &event);
switch (event.type) {
//close
case ALLEGRO_EVENT_DISPLAY_CLOSE:
goto END;
//keydown
case ALLEGRO_EVENT_KEY_DOWN:
if (event.keyboard.keycode == ALLEGRO_KEY_ESCAPE) goto END;
algui_dispatch_event(algui_get_display_widget(display), &event);
break;
//redraw
case ALLEGRO_EVENT_DISPLAY_EXPOSE:
need_draw = 1;
break;
//remove the input focus
case ALLEGRO_EVENT_DISPLAY_SWITCH_OUT:
algui_dispatch_event(algui_get_display_widget(display), &event);
need_draw = 1;
break;
//handle timers
case ALLEGRO_EVENT_TIMER:
if (event.timer.source == loop_timer) need_draw = 1;
else algui_dispatch_event(algui_get_display_widget(display), &event);
break;
//dispatch event to the widgets
default:
algui_dispatch_event(algui_get_display_widget(display), &event);
break;
}
if (need_draw && al_is_event_queue_empty(queue)) {
algui_draw_widget(algui_get_display_widget(display));
al_flip_display();
need_draw = false;
}
}
/**** CLEANUP ****/
END:
//cleanup the gui
algui_destroy_widget(algui_get_display_widget(display));
algui_destroy_skin(skin);
algui_cleanup();
//cleanup allegro
al_destroy_timer(loop_timer);
al_destroy_event_queue(queue);
al_destroy_display(al_display);
return 0;
}
void GameEngine::initialise()
{
if (!al_init())
{
THROW_GAME_EXCEPTION(EXCEP_ALLEG_ENGINE_FAILED);
}
if (!al_init_font_addon())
{
THROW_GAME_EXCEPTION(EXCEP_ALLEG_FONT_FAILED);
}
if (!al_init_image_addon())
{
THROW_GAME_EXCEPTION(EXCEP_ALLEG_IMAGE_FAILED);
}
if (!al_install_keyboard())
{
THROW_GAME_EXCEPTION(EXCEP_ALLEG_KEYBOARD_FAILED);
}
if (!al_install_mouse())
{
THROW_GAME_EXCEPTION(EXCEP_ALLEG_MOUSE_FAILED);
}
//Temporary Display Options
al_set_new_display_flags(ALLEGRO_OPENGL);
al_set_new_display_option(ALLEGRO_SAMPLE_BUFFERS, 1, ALLEGRO_SUGGEST);
al_set_new_display_option(ALLEGRO_SAMPLES, 4, ALLEGRO_SUGGEST);
al_set_new_display_option(ALLEGRO_RENDER_METHOD, 1, ALLEGRO_SUGGEST);
al_set_new_display_option(ALLEGRO_VSYNC, 2, ALLEGRO_REQUIRE);
al_set_new_display_option(ALLEGRO_CAN_DRAW_INTO_BITMAP, 1, ALLEGRO_SUGGEST);
int originalDisplayFlags = al_get_new_display_flags();
int displayFlags = 0;
if (m_Config->getFullscreen())
{
displayFlags = displayFlags | ALLEGRO_FULLSCREEN_WINDOW | ALLEGRO_NOFRAME;
}
al_set_new_display_flags(displayFlags);
al_set_new_bitmap_flags(ALLEGRO_MIN_LINEAR | ALLEGRO_MAG_LINEAR | ALLEGRO_VIDEO_BITMAP);
if (m_Config->getResolutionWidth() < 0 || m_Config->getResolutionHeight() < 0)
{
ALLEGRO_DISPLAY_MODE largest_display_mode;
al_get_display_mode(al_get_num_display_modes() - 1, &largest_display_mode);
m_Config->setResolutionWidth(largest_display_mode.width);
m_Config->setResolutionHeight(largest_display_mode.height);
//std::cout << m_Config->getResolutionWidth() << " " << m_Config->getResolutionHeight() << endl;
}
m_Display = al_create_display(m_Config->getResolutionWidth(), m_Config->getResolutionHeight());
if (!m_Display)
{
THROW_GAME_EXCEPTION(EXCEP_ALLEG_DISPLAY_FAILED);
}
al_set_new_display_flags(originalDisplayFlags);
m_RedrawTimer = al_create_timer(ALLEGRO_BPS_TO_SECS(m_Config->getFrameSpeed()));
if (!m_RedrawTimer)
{
THROW_GAME_EXCEPTION(EXCEP_ALLEG_TIMER_FAILED);
}
m_EventQueue = al_create_event_queue();
if (!m_EventQueue)
{
THROW_GAME_EXCEPTION(EXCEP_ALLEG_EQUEUE_FAILED);
}
al_register_event_source(m_EventQueue, al_get_display_event_source(m_Display));
al_register_event_source(m_EventQueue, al_get_timer_event_source(m_RedrawTimer));
al_register_event_source(m_EventQueue, al_get_keyboard_event_source());
}
static ALLEGRO_DISPLAY *raspberrypi_create_display(int w, int h)
{
ALLEGRO_DISPLAY_RASPBERRYPI *d = al_calloc(1, sizeof *d);
ALLEGRO_DISPLAY *display = (void*)d;
ALLEGRO_OGL_EXTRAS *ogl = al_calloc(1, sizeof *ogl);
display->ogl_extras = ogl;
display->vt = _al_get_raspberrypi_display_interface();
display->flags = al_get_new_display_flags();
ALLEGRO_SYSTEM_RASPBERRYPI *system = (void *)al_get_system_driver();
/* Add ourself to the list of displays. */
ALLEGRO_DISPLAY_RASPBERRYPI **add;
add = _al_vector_alloc_back(&system->system.displays);
*add = d;
/* Each display is an event source. */
_al_event_source_init(&display->es);
display->extra_settings.settings[ALLEGRO_COMPATIBLE_DISPLAY] = 1;
display->w = w;
display->h = h;
if (!pi_create_display(display)) {
// FIXME: cleanup
return NULL;
}
if (getenv("DISPLAY")) {
_al_mutex_lock(&system->lock);
Window root = RootWindow(
system->x11display, DefaultScreen(system->x11display));
XWindowAttributes attr;
XGetWindowAttributes(system->x11display, root, &attr);
d->window = XCreateWindow(
system->x11display,
root,
0,
0,
attr.width,
attr.height,
0, 0,
InputOnly,
DefaultVisual(system->x11display, 0),
0,
NULL
);
XGetWindowAttributes(system->x11display, d->window, &attr);
XSelectInput(
system->x11display,
d->window,
PointerMotionMask | KeyPressMask | KeyReleaseMask | ButtonPressMask | ButtonReleaseMask
);
XMapWindow(system->x11display, d->window);
_al_xwin_reset_size_hints(display);
_al_xwin_set_fullscreen_window(display, 2);
_al_xwin_set_size_hints(display, INT_MAX, INT_MAX);
d->wm_delete_window_atom = XInternAtom(system->x11display,
"WM_DELETE_WINDOW", False);
XSetWMProtocols(system->x11display, d->window, &d->wm_delete_window_atom, 1);
_al_mutex_unlock(&system->lock);
}
al_grab_mouse(display);
_al_ogl_manage_extensions(display);
_al_ogl_set_extensions(ogl->extension_api);
setup_gl(display);
al_set_blender(ALLEGRO_ADD, ALLEGRO_ONE, ALLEGRO_INVERSE_ALPHA);
display->flags |= ALLEGRO_OPENGL;
if (al_is_mouse_installed() && !getenv("DISPLAY")) {
_al_evdev_set_mouse_range(0, 0, display->w-1, display->h-1);
}
set_cursor_data(d, default_cursor, DEFAULT_CURSOR_WIDTH, DEFAULT_CURSOR_HEIGHT);
return display;
}
static ALLEGRO_DISPLAY *sdl_create_display_locked(int w, int h)
{
ALLEGRO_DISPLAY_SDL *sdl = al_calloc(1, sizeof *sdl);
ALLEGRO_DISPLAY *d = (void *)sdl;
d->w = w;
d->h = h;
d->flags = al_get_new_display_flags();
d->flags |= ALLEGRO_OPENGL;
int flags = SDL_WINDOW_OPENGL;
if (d->flags & ALLEGRO_FULLSCREEN)
flags |= SDL_WINDOW_FULLSCREEN;
if (d->flags & ALLEGRO_FULLSCREEN_WINDOW)
flags |= SDL_WINDOW_FULLSCREEN_DESKTOP;
if (d->flags & ALLEGRO_FRAMELESS)
flags |= SDL_WINDOW_BORDERLESS;
if (d->flags & ALLEGRO_RESIZABLE)
flags |= SDL_WINDOW_RESIZABLE;
GLoption(ALLEGRO_COLOR_SIZE, SDL_GL_BUFFER_SIZE);
GLoption(ALLEGRO_RED_SIZE, SDL_GL_RED_SIZE);
GLoption(ALLEGRO_GREEN_SIZE, SDL_GL_GREEN_SIZE);
GLoption(ALLEGRO_BLUE_SIZE, SDL_GL_BLUE_SIZE);
GLoption(ALLEGRO_ALPHA_SIZE, SDL_GL_ALPHA_SIZE);
GLoption(ALLEGRO_ACC_RED_SIZE, SDL_GL_ACCUM_RED_SIZE);
GLoption(ALLEGRO_ACC_GREEN_SIZE, SDL_GL_ACCUM_GREEN_SIZE);
GLoption(ALLEGRO_ACC_BLUE_SIZE, SDL_GL_ACCUM_BLUE_SIZE);
GLoption(ALLEGRO_ACC_ALPHA_SIZE, SDL_GL_ACCUM_ALPHA_SIZE);
GLoption(ALLEGRO_STEREO, SDL_GL_STEREO);
GLoption(ALLEGRO_DEPTH_SIZE, SDL_GL_DEPTH_SIZE);
GLoption(ALLEGRO_STENCIL_SIZE, SDL_GL_STENCIL_SIZE);
GLoption(ALLEGRO_SAMPLE_BUFFERS, SDL_GL_MULTISAMPLEBUFFERS);
GLoption(ALLEGRO_SAMPLES, SDL_GL_MULTISAMPLESAMPLES);
sdl->window = SDL_CreateWindow(sdl->title, sdl->x, sdl->y,
d->w, d->h, flags);
if (!sdl->window) {
ALLEGRO_ERROR("SDL_CreateWindow failed: %s", SDL_GetError());
return NULL;
}
flags =
SDL_RENDERER_ACCELERATED |
SDL_RENDERER_PRESENTVSYNC |
SDL_RENDERER_TARGETTEXTURE;
sdl->renderer = SDL_CreateRenderer(sdl->window, -1, flags);
sdl->context = SDL_GL_CreateContext(sdl->window);
ALLEGRO_DISPLAY **add;
ALLEGRO_SYSTEM *system = al_get_system_driver();
add = _al_vector_alloc_back(&system->displays);
*add = d;
_al_event_source_init(&d->es);
d->vt = vt;
d->extra_settings.settings[ALLEGRO_COMPATIBLE_DISPLAY] = true;
d->ogl_extras = al_calloc(1, sizeof *d->ogl_extras);
_al_ogl_manage_extensions(d);
_al_ogl_set_extensions(d->ogl_extras->extension_api);
_al_ogl_setup_gl(d);
return d;
}
/* 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;
}
void _al_d3d_generate_display_format_list(void)
{
static bool fullscreen = !(al_get_new_display_flags() & ALLEGRO_FULLSCREEN); /* stop warning */
static int adapter = ~al_get_new_display_adapter(); /* stop warning */
int i;
if (!_al_vector_is_empty(&eds_list) && (fullscreen == (bool)(al_get_new_display_flags() & ALLEGRO_FULLSCREEN))
&& (adapter == al_get_new_display_adapter())) {
return;
}
else if (!_al_vector_is_empty(&eds_list)) {
_al_d3d_destroy_display_format_list();
}
fullscreen = (al_get_new_display_flags() & ALLEGRO_FULLSCREEN) != 0;
adapter = al_get_new_display_adapter();
if (adapter < 0)
adapter = 0;
_al_vector_init(&eds_list, sizeof(ALLEGRO_EXTRA_DISPLAY_SETTINGS *));
/* Loop through each bit combination of:
* bit 0: 16/32 bit
* bit 1: single-buffer
* bit 2: vsync
*/
for (i = 0; i < 8; i++) {
int format_num = !!(i & 1);
int single_buffer = !!(i & 2);
int vsync = !!(i & 4);
int allegro_format = ALLEGRO_PIXEL_FORMAT_XRGB_8888;
if (format_num == 1) allegro_format = ALLEGRO_PIXEL_FORMAT_RGB_565;
D3DFORMAT d3d_format = (D3DFORMAT)_al_pixel_format_to_d3d(allegro_format);
/* Count available multisample quality levels. */
DWORD quality_levels = 0;
if (_al_d3d->CheckDeviceMultiSampleType(adapter, D3DDEVTYPE_HAL, d3d_format,
!fullscreen, D3DMULTISAMPLE_NONMASKABLE, &quality_levels) != D3D_OK) {
_al_d3d->CheckDeviceMultiSampleType(adapter, D3DDEVTYPE_REF, d3d_format,
!fullscreen, D3DMULTISAMPLE_NONMASKABLE, &quality_levels);
}
/* Loop through available depth/stencil formats. */
for (int j = 0; j < D3D_DEPTH_FORMATS; j++) {
if (j == 0 || IsDepthFormatExisting(
depth_stencil_formats[j].format, d3d_format)) {
DEPTH_STENCIL_DESC *ds = depth_stencil_formats + j;
for (int k = 0; k < (int)quality_levels + 1; k++) {
ALLEGRO_EXTRA_DISPLAY_SETTINGS *eds, **peds;
peds = (ALLEGRO_EXTRA_DISPLAY_SETTINGS **)_al_vector_alloc_back(&eds_list);
eds = *peds = (ALLEGRO_EXTRA_DISPLAY_SETTINGS *)al_malloc(sizeof *eds);
memset(eds->settings, 0, sizeof(int) * ALLEGRO_DISPLAY_OPTIONS_COUNT);
eds->settings[ALLEGRO_COMPATIBLE_DISPLAY] = 1;
if (format_num == 0) {
eds->settings[ALLEGRO_RED_SIZE] = 8;
eds->settings[ALLEGRO_GREEN_SIZE] = 8;
eds->settings[ALLEGRO_BLUE_SIZE] = 8;
eds->settings[ALLEGRO_RED_SHIFT] = 16;
eds->settings[ALLEGRO_GREEN_SHIFT] = 8;
eds->settings[ALLEGRO_BLUE_SHIFT] = 0;
eds->settings[ALLEGRO_COLOR_SIZE] = 32;
}
else if (format_num == 1) {
eds->settings[ALLEGRO_RED_SIZE] = 5;
eds->settings[ALLEGRO_GREEN_SIZE] = 6;
eds->settings[ALLEGRO_BLUE_SIZE] = 5;
eds->settings[ALLEGRO_RED_SHIFT] = 11;
eds->settings[ALLEGRO_GREEN_SHIFT] = 5;
eds->settings[ALLEGRO_BLUE_SHIFT] = 0;
eds->settings[ALLEGRO_COLOR_SIZE] = 16;
}
if (single_buffer) {
eds->settings[ALLEGRO_SINGLE_BUFFER] = 1;
eds->settings[ALLEGRO_UPDATE_DISPLAY_REGION] = 1;
}
if (vsync) {
eds->settings[ALLEGRO_VSYNC] = 1;
}
eds->settings[ALLEGRO_DEPTH_SIZE] = ds->d;
eds->settings[ALLEGRO_STENCIL_SIZE] = ds->s;
if (k > 1) {
eds->settings[ALLEGRO_SAMPLE_BUFFERS] = 1;
// TODO: Is it ok to use the quality level here?
eds->settings[ALLEGRO_SAMPLES] = k;
}
}
}
}
}
ALLEGRO_INFO("found %d format combinations\n", _al_vector_size(&eds_list));
}
