void _al_iphone_setup_opengl_view(ALLEGRO_DISPLAY *d)
{
int w, h;
_al_iphone_get_screen_size(&w, &h);
_al_iphone_reset_framebuffer();
glViewport(0, 0, w, h);
glMatrixMode(GL_PROJECTION);
glLoadIdentity();
glOrthof(0, w, h, 0, -1, 1);
_screen_w = w;
_screen_h = h;
/* We automatically adjust the view if the user doesn't use 320x480. Users
* of the iphone port are adviced to provide a 320x480 mode and do their
* own adjustment - but for the sake of allowing ports without knowing
* any OpenGL and not having to change a single character in your
* application - here you go.
*/
if (d->w != w || d->h != h) {
double scale = 1, xoff = 0, yoff = 0;
if (d->w >= d->h) {
if (d->w * w > d->h * h) {
scale = h * 1.0 / d->w;
xoff = (w - d->h * scale) * 0.5;
_screen_y = 0.5 * (d->h - w / scale);
}
else {
scale = w * 1.0 / d->h;
yoff = (h - d->w * scale) * 0.5;
_screen_x = 0.5 * (d->w - h / scale);
}
glTranslatef(xoff, yoff, 0);
glTranslatef(w, 0, 0);
glRotatef(90, 0, 0, 1);
glScalef(scale, scale, 1);
}
else {
// TODO
}
if (!_screen_hack) {
_screen_hack = true;
_screen_scale = scale;
_screen_iscale = 1.0 / _screen_scale;
ALLEGRO_INFO("Auto-scaling/rotating %dx%d display to %.fx%.f screen.\n",
d->w, d->h, _screen_w, _screen_h);
ALLEGRO_DEBUG("x-off:%.f y-off:%.f scale:%.2f\n", _screen_x,
_screen_y, _screen_scale);
}
}
glMatrixMode(GL_MODELVIEW);
glLoadIdentity();
}
static bool iphone_get_monitor_info(int adapter, ALLEGRO_MONITOR_INFO *info)
{
int w, h;
_al_iphone_get_screen_size(adapter, &w, &h);
info->x1 = 0;
info->y1 = 0;
info->x2 = w;
info->y2 = h;
return true;
}
static ALLEGRO_DISPLAY *iphone_create_display(int w, int h)
{
ALLEGRO_DISPLAY_IPHONE *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_iphone_display_interface();
display->flags = al_get_new_display_flags();
if (display->flags & ALLEGRO_FULLSCREEN_WINDOW) {
_al_iphone_get_screen_size(&w, &h);
}
display->w = w;
display->h = h;
ALLEGRO_SYSTEM_IPHONE *system = (void *)al_get_system_driver();
/* Add ourself to the list of displays. */
ALLEGRO_DISPLAY_IPHONE **add;
add = _al_vector_alloc_back(&system->system.displays);
*add = d;
/* Each display is an event source. */
_al_event_source_init(&display->es);
_al_iphone_update_visuals();
ALLEGRO_EXTRA_DISPLAY_SETTINGS *eds[system->visuals_count];
memcpy(eds, system->visuals, sizeof(*eds) * system->visuals_count);
qsort(eds, system->visuals_count, sizeof(*eds), _al_display_settings_sorter);
ALLEGRO_INFO("Chose visual no. %i\n", eds[0]->index);
memcpy(&display->extra_settings, eds[0], sizeof(ALLEGRO_EXTRA_DISPLAY_SETTINGS));
/* This will add an OpenGL view with an OpenGL context, then return. */
_al_iphone_add_view(display);
_al_iphone_make_view_current();
_al_ogl_manage_extensions(display);
_al_ogl_set_extensions(ogl->extension_api);
setup_gl(display);
display->flags |= ALLEGRO_OPENGL;
return display;
}
