Re: [hatari-devel] VDI resolution limits (was: Problems with some FPU tests)

[Eero Tamminen <oak@xxxxxxxxxxxxxx>]

Hi,

On 04/28/2018 10:23 AM, Thorsten Otto wrote:
> On Samstag, 28. April 2018 08:49:03 CEST Thomas Huth wrote:
> > - You are using monochrome resolution in TT mode in your config file,
> >    right?
>
> When starting normally, i currently request 1280x960@4 planes, with extended
> VDI resolution. but VDI resolutions are disabled in testing mode. Also, the
> actual resolution Hatari then uses is 896x672, i think because of the limit of
> 300k for the screen buffer Hatari imposes (which is imho rather random,
> atleast TOS 3.06 does not have any problem with larger screens).

Users select VDI mode to run applications, not just to marvel at TOS
desktop. :-)

300kB is a bit odd size, but that's what I found to be about largest
that works with wider variety of GEM programs.  E.g. older NVDI and
Calamus (v1.09 that still works with monochrome ST).

If you have contrary test-data for different VDI bit-depths from:
- multiple TOS versions (1.04, 2.06, 3.06 and latest EmuTOS),
- in multiple memory configurations (2, 4 and 14MB),
- with few of the most popular SW VDI accelerator versions,
- and with large set of GEM applications

I would be interested about the results.


Besides, as mentioned in the Hatari manual, in monochrome 300kB is
enough for resolutions like FullHD (1920×1080), WUXGA (1920x1200)
and QWXGA (2048x1152), so it's not *that* small...


	- Eero