From: Jim Kjellin <jim.kjellin@sciron.se>
  To  : 'ggi-develop@eskimo.com' <ggi-develop@eskimo.com>
  Date: Wed, 7 Apr 1999 15:05:42 +0200

RE: GGI/GII difficulties

> -----Original Message-----
> From:	becka@rz.uni-duesseldorf.de [SMTP:becka@rz.uni-duesseldorf.de]
> Sent:	Tuesday, April 06, 1999 5:48 PM
> To:	ggi-develop@eskimo.com
> Subject:	Re: GGI/GII difficulties
> 
> Hi !
> 
> > Since there were few example of using GII compined with GGI i naturally
> > thought i had to do it all myself, and about an hour or so after I'd 
> > send this mail i found a demo which used joystick-input
> > combined with GGI.. 
> 
> *grin* - as always :-)
> 
> > Now to some other things:
> > Color Keying, is it implemented?
> 
> Not in LibGGI. It was supposed to be in LibGGI2D, but I don't know the
> state
> of that one ...
> 
> > Is there some way (without asking for larger visuals) to get visuals in
> > video-memory so graphics operations can be performed by hardware, 
> 
> No. For now you need to use a larger virtual and place the sprites there.
> 
	What happends if I ask for an inhumanly large visual? (I.e. larger
than
	the video-memory can cope with) Will it just say "sorry I couldn't
	create that visual for you" or will it emulate it somehow?

> > When I develop under console environment I have it set to 1600x1200x16
> and
> > when the program
> > calls ggiSetMode with a 640x480x16 mode the result is that the monitor
> > doesn't really like the
> > frequencies (go figure 200 Khz horizontal and 250Hz vertical :P), now is
> > there some way to get
> > the SetMode call to also change the frequencies used and not only the
> with
> > and height
> > (my guess is that frequency would be pixelclock).
> > This is all done with matroxfb btw.
> 
> The stock kernel matroxfb ? Or a kgicon driver ?
> 
	The matroxfb driver, AFAIK there is no kgicon driver for the G200
series
	(anyone, feel free to prove me wrong on this... please :P)

> The latter should calc appropriate frequencies automatically, given the 
> monitor's limits.
> 
> What happens on the "normal" fbcon driver on a mode-change BTW ?
> Does the driver select from a set of "uploaded" modes or what ?
> 
	The matroxfb driver changes the geometry settings but leaves timings
	as they were before the mode-change, so the pixelclock is usually
	way to low when going from a hi-res mode to a low-res mode.


	--- Jim Kjellin