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#174 Bug with al_resize_display()

closed
nobody
None
5
2012-10-09
2009-02-26
Bruno Adami
No

I'm trying the new allegro library (4.9.8) and when I resize my display from 320x240 to 800x600, my sprites that I draw on the screen get bigger too:

http://img120.imageshack.us/img120/5203/large.jpg (The sprite shown on the image should be 150x40.)

I posted it on allegro.cc forums and they said that perhaps is my video card or my OS: I'm using Windows Vista and NVidia GeForce.

I tried it with the code that is attached.

Discussion

  • Bruno Adami

    Bruno Adami - 2009-02-26

    Code with the display issue

     
    test.cpp

  • Bruno Adami

    Bruno Adami - 2009-02-26

    Bugged display

     
    Thumbnail
    large.jpg

  • Bruno Adami

    Bruno Adami - 2009-02-26

    Update: I uploaded the image too.

     

  • Peter Wang

    Peter Wang - 2009-03-12

    Works okay on Linux, so probably Windows or D3D specific.

     

  • Trent Gamblin

    Trent Gamblin - 2009-03-15

    This is a code error in your test program. This is how it should be done:

    include <allegro5 allegro5.h=""></allegro5>

    include <allegro5 a5_iio.h=""></allegro5>

    int main(void)
    {
    ALLEGRO_DISPLAY display;
    ALLEGRO_BITMAP     bitmap;
    ALLEGRO_EVENT_QUEUE *queue;
    ALLEGRO_EVENT event;

    al_init();
al_iio_init();

display = al_create_display(320, 240);
bitmap = al_iio_load("allegro.pcx");

queue = al_create_event_queue();
al_register_event_source(queue, (ALLEGRO_EVENT_SOURCE *)display);

al_clear(al_map_rgb(0, 0, 0));
al_draw_bitmap(bitmap, 0, 0, 0);
al_flip_display();
al_rest(3);

al_resize_display(800, 600);

while (1) {
    al_wait_for_event(queue, &event);
    if (event.type == ALLEGRO_EVENT_DISPLAY_RESIZE) {
        al_acknowledge_resize(event.display.source);
        break;
    }
}

al_clear(al_map_rgb(0, 0, 0));
al_draw_bitmap(bitmap, 0, 0, 0);
al_flip_display();
al_rest(3);

return 0;

    }
    END_OF_MAIN()

     

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