Re: [MiNT] LDG vs. SLB vs. custom OVL-thingies

[Lonny Pursell <atari@bright.net>]

on 4/10/11 4:18 PM, Peter Persson wrote:

> 
> 10 apr 2011 kl. 22.09 skrev Jo Even Skarstein:
> 
>> CAB and Papillon atleast. fVDI installs an EdDI cookie during startup,
>> and zView doesn't start at all if this cookie isn't present.
> 
> That doesn't mean offscreen bitmaps are there and actually works. Highwire for
> example requires this cookie + vq_scrninfo(), but doesn't use offscreen
> bitmaps at all.
> 
> Offscreen bitmaps in fVDI are either broken or bogus. It's possible that there
> was some experimental implementation of it 10 years ago, but fVDI needs a lot
> of work in this area if it is to become a useful alternative to NVDI. I tried
> opening offscreen bitmaps on fVDI, and it fails. That was about a year ago
> though. Might be driver specific, but then it should create bitmaps in fastram
> instead - which it doesn't.

I just tried a test app I wrote for Ozk to stress test off screen bitmaps
when he was working on oVDI. It exits with "open_bm() error!" in the console
under fVDI. Certainly a bogus handle is returned.  The message is generated
by my test app after looking at the handle, its <= 0 apparently.

-- 
Lonny Pursell    http://www.bright.net/~gfabasic/