Re: [hatari-devel] Hatari screen updating bug?

[Eero Tamminen <oak@xxxxxxxxxxxxxx>]

Hi,

On 8.10.2022 11.24, Nicolas Pomarède wrote:
> Le 07/10/2022 à 23:57, Eero Tamminen a écrit :
> > There's an odd issue with demo here:
> > https://www.atari-forum.com/viewtopic.php?t=42218
> >
> > Under Falcon emulation, its main menu gets Hatari to a state where 
> > e.g. statusbar does not get refreshed when toggling fast forward, and 
> > screen is not refreshed when Hatari options dialog goes away.

Note that this happens only with TOS v4 as that demo panics EmuTOS 
before it reaches this point.


> maybe a video mode / resolution for falcon that confuses the SDL UI, 
> making it believe the UI has the wrong size and not refreshing the 
> correct area ?
>
> did it work with previous Hatari version to see if this can be bisected 
> with git ?

It happens also with Hatari v.2.3.1.

That version still has the useful warnings about weird resolutions, and 
such thing could indeed be the trigger:
-------------------------------------------
WARN : Strange screen size 320x50 -> aspect corrected by 1x4!
WARN : Strange screen size 320x25 -> aspect corrected by 1x8!
WARN : Strange screen size 320x12 -> aspect corrected by 1x16!
WARN : Strange screen size 320x6 -> aspect corrected by 1x32!
WARN : Strange screen size 320x3 -> aspect corrected by 1x64!
WARN : Strange screen size 320x1 -> aspect corrected by 1x256!
-------------------------------------------

I guess Hatari Videl emulation / SDL2 code has some bug regarding Atari 
screen sizes with height of 1...


	- Eero