no-reply@allegro.cc (Specter Phoenix) — Sun, 08 Oct 2017 03:44:25 +0000

I was reading this tutorial: https://wiki.allegro.cc/index.php?title=Creating_a_fullscreen_display_with_maximum/minimum_resolution

I executed the code and it compiled fine. I started goofing around with just the function for getting the resolution and my laptop doesn't seem to line up with what the wiki states.

Per wiki:

al_get_display_mode(al_get_num_display_modes() - 1, &disp_data); // minimum res
al_get_display_mode(0, &disp_data); // to get maximum supported resolution instead

My code:

#SelectExpand
  1#include 
  2
  3#include "allegro5/allegro.h"
  4
  5int main(int argc, char **argv){
  6    ALLEGRO_DISPLAY_MODE    disp_data;
  7
  8    al_init();  // skipped error checking 
  9
 10    al_get_display_mode(al_get_num_display_modes()-1, &disp_data); // wiki states this is minimum
 11    std::cout << "Minimum Resolution: " << disp_data.width << " x " << disp_data.height << std::endl;
 12
 13    al_get_display_mode(0, &disp_data); // wiki states this is maximum
 14    std::cout << "Maximum Resolution: " << disp_data.width << " x " << disp_data.height << std::endl;
 15
 16    return 0;
 17}

The output is what made it confusing.

>a5test
Minimum Resolution: 1366 x 768
Maximum Resolution: 320 x 200

So is this a wiki error, my strange laptop, or am I misreading the code or wiki?

no-reply@allegro.cc (Edgar Reynaldo) — Sun, 08 Oct 2017 04:04:17 +0000

It's an ascending sort. Smallest is first. Wiki is wrong I would guess.

no-reply@allegro.cc (Specter Phoenix) — Sun, 08 Oct 2017 04:53:23 +0000

Okay. I just wanted to verify it as I was just starting to think maybe I had a weird graphics card [Intel].

no-reply@allegro.cc (SiegeLord) — Sun, 08 Oct 2017 04:54:52 +0000

I don't think the order is defined. On Linux, 0 yields the largest option for me. The wiki is wrong, yes.

no-reply@allegro.cc (Chris Katko) — Sun, 08 Oct 2017 06:26:58 +0000

Specter Phoenix said:

I had a weird graphics card [Intel].

Don't worry. You do.

Allegro Wiki A5 Tutorial error or really odd laptop?