Build Your Own Arcade Controls Forum

Software Support => GroovyMAME => Topic started by: edslp on August 21, 2017, 05:12:55 am

Title: 1:1 and vertical games on 4:3 monitor.. which aspect output is correct?
Post by: edslp on August 21, 2017, 05:12:55 am

example 1 - Burger Time:
Original resolution is 240x240.. I can run at 720x720 and set aspect to 1:1.. or run at 960x720 and leave aspect at 4:3.

example 2 - 1942:
Original res is 224x256.. so its 672x768 (aspect 1:1) vs 896x768 (aspect 4:3)

Both options scale perfectly without filtering, though they differ in pixel width.. and I can't decide which looks right.. as one seems too wide (maybe) while other too thin  :lol
Which one is correct?

Title: Re: 1:1 and vertical games on 4:3 monitor.. which aspect output is correct?
Post by: buttersoft on August 21, 2017, 07:56:41 pm

I think you've stumbled on a case where it doesn't really matter.I'd probably pick the larger horizontal res as it might be slightly clearer. Like with super resolutions but not as much :)

Why are you not just using super resolutions, btw? It almost sounds like you're going to be creating a mode for each game you want to play.

Title: Re: 1:1 and vertical games on 4:3 monitor.. which aspect output is correct?
Post by: edslp on August 22, 2017, 02:20:30 am

thanks, yeh both options are perfectly sharp, it's just the pixel width that varies. I do use super resolutions also, which tends to pick an aspect closer to option B, but not exactly the same and I was trying to determine why.. but your right I will just stick to super resolutions in these cases ;D

Title: Re: 1:1 and vertical games on 4:3 monitor.. which aspect output is correct?
Post by: Calamity on August 22, 2017, 03:42:28 am

I'm missing something here. Which orientation is your monitor?

Title: Re: 1:1 and vertical games on 4:3 monitor.. which aspect output is correct?
Post by: edslp on August 22, 2017, 04:05:15 am

Monitor orientation is horizontal. It's ok calamity, super resolutions are working well and look correct (btime = 2560x480 / 1942 = 2560x512).
I was just wondering why I couldn't reproduce the same correct scale using the options I mention in the first post.. I assumed one of them would be correct but it turns out neither are. All is well if just stick with super resolutions :D

Title: Re: 1:1 and vertical games on 4:3 monitor.. which aspect output is correct?
Post by: Calamity on August 22, 2017, 01:11:05 pm

Ok, just for information.

The proper horizontal resolution to display a vertical game on a 4:3 horizontal monitor with the correct aspect ratio is 16/9 x height.

Example: 1942, 224x256 (256x224 vertical)
height: 224 -> 16/9 x 224 = 398,22 -> 400 (round to 8-multiple)

So the correct resolution is: 400x256
Or any multiple: 800x512, 1200x768, etc.

Title: Re: 1:1 and vertical games on 4:3 monitor.. which aspect output is correct?
Post by: edslp on August 23, 2017, 07:57:07 am

So that's the formula! Perfect, thanks calamity :)