aspect ratio viewport not staying consistent per game - Retroarch stella Atari 2600 emulation with bezel overlay

[zoemorn]

update: i'm noticing the below behavior for the atari 7800 core (prosystem) as well.

So  i'm trying to configure  a bezel overlay for atari 2600 games, using retroarch, stella core,   when i configure the bezel overlay, each game is getting a different viewport and i cant figure out why. i can set the viewport for one game and then save the Content override, but when loading a different game the display of the game doesnt line up with the overlay. and then  if i open yet a different game, it has a different alignment even from the other two before it.

Its acting like i'd have to configure a custom aspect ratio in scaling  PER game. and more odd is that the custom aspect ratio configuration isnt showing as different. so for each game i can jump into the retroarch menu, look at the custom aspect ratio width & height & positions and they show as what i had configured but the display of the game is out of whack.   i dont recall if i had this issue in prior setups of retroarch overlays and i've not noticed it yet for other core/platforms.

i've tried setting aspect ratio  set to Core provided, or Custom and again, each game seems to have a different viewport alignment and doesnt  line up with the bezel.  I welcome anyone's advice about what i may have configured wrong.

 

Attached scrrenshots. One shows example of a game displaying well (though i'd need to increase the overlay opacity, but i'll do that whenthe aspect ratio issue figured out). The other shows a different game and you can see how even wthe same config, it is displaying the game very differently with the view port totally mis-aligned to the overlay.

Edited September 19, 2022 by zoemorn