I didn't get what the actual idea is, do you have an additional scaler in mind
that squeezes everything into a fixed resolution?

Maybe check nop's port (pocketpc):
n0p is alive - and coding
which has some qvga/vga scaler (no idea what it does).

Yeah basically fit higher resolutions into smaller resolutions.
Force 640x400 into 320x200 if the physical screen only supports 320x240.

Thanks I will take a look and see whats there in the n0p version.

The tricky thing might be that what you're thinking of depends on the
input resolution (320x200->320x200, 640x400->320x200, 640x480->320x2?0).
Otherwise i'd have suggested a "skip every second row/column" or an
averaging filter.

As long as the screen is a 4:3 aspect we could use alternating lines?

320x200->320x200 (physical size is 320x240)
640x400->320x200 (physical size is 320x240)
640x480->320x240

Small hint btw:

Edit: Well i havnt got one response, I dont know whats worse instant rejection or none at all.

This sort of edit is quite bad because it slips through the "new post" feature.
Only read it now by accident.

I would look at averaging filters before things like alternating line reduction so that you hopefully lose less detail.

HunterZ wrote:

I would look at averaging filters before things like alternating line reduction so that you hopefully lose less detail.

you may loose way too much detail in any case...

wd wrote:

Small hint btw: […]
Show full quote

Small hint btw:

Edit: Well i havnt got one response, I dont know whats worse instant rejection or none at all.

This sort of edit is quite bad because it slips through the "new post" feature.
Only read it now by accident.

I took it out, i didnt think I was going to get any feedback. So thank you very much for responding 😀

For the question of loss of detail, maybe if the alternating lines looks really bad then maybe an average approach would be better. But the way I see it now theres nothing in dosbox to handle this so any solution id better than none.