camllight graphics and video card S3 trio 64V+, etc.

camllight graphics and video card S3 trio 64V+, etc.

[Jean-Christophe Filliatre]

Hello,

[ I post this questions for 3 persons who do not have access to mail ]

1. I have a video card "S3 trio 64 V+ PCI" and there seems to be no
driver for this
card in order to use the graphics library of camllight 0.71 under DOS.
Is it possible to get it somewhere ? Or is there any "standard" SVGA
driver which can be used with this card ?

2. Is the 256 colors limitation of the graphics library inherent to this
library,
or is it possible to find drivers for more than 256 colors (for 24 bits
video cards
for instance) ?


Thank you.

Sincerely,

-- 
| Jean-Christophe FILLIATRE
(Jean-Christophe.Filliatre@ens-lyon.fr)       |
|   WWW:
http://www.eleves.ens.fr:8080/home/filliatr/                     |

Re: camllight graphics and video card S3 trio 64V+, etc.

[Xavier Leroy]

> 1. I have a video card "S3 trio 64 V+ PCI" and there seems to be no
> driver for this
> card in order to use the graphics library of camllight 0.71 under DOS.
> Is it possible to get it somewhere ? Or is there any "standard" SVGA
> driver which can be used with this card ?

You're probably talking about release 0.7 or earlier. You should try
VESA_S3.GRN first, which seems to be a "generic" S3 driver. If this
fails, try other drivers for cards that have S3 chips in them, such as
STEALTH.GRN and F1280.GRN

This said, graphics under MSDOS are a mess, and you're strongly
encouraged to do graphics under the Windows version of Caml Light 0.71.
At least, Windows takes care of the graphics drivers.

> 2. Is the 256 colors limitation of the graphics library inherent to
> this library, or is it possible to find drivers for more than 256
> colors (for 24 bits video cards for instance) ?

The graphics code for 0.7 was built on top of the CBGRX library for
DJGPP version 1, and I don't think this library can handle more than
256 colors. (This is code I wrote almost five years ago, so I can be
wrong.)

For 0.71, Caml Light will happily let you access all colors that
Windows provides.

- Xavier Leroy