Path: utzoo!attcan!uunet!wuarchive!uwm.edu!linac!att!pacbell.com!pacbell!barn!everexn!exactus!dave
From: dave@exactus.UUCP (David Salas)
Newsgroups: comp.windows.ms
Subject: Re: vga speed
Keywords: vga, graphics
Message-ID: <5XFgV3w163w@exactus.UUCP>
Date: 8 Jan 91 12:16:27 GMT
References: <1991Jan7.160127.25819@sunee.waterloo.edu>
Organization: Exactus Inc, Santa Rosa, CA
Lines: 41

> >   Can anybody out there who has access to both a VGA equiped machine
> >   and one with a graphics coprocessor board please tell how
> >   much faster one is than the other.
> 
> I would say that the only speedup you would realize would be with the`
> 256 colour VGA drivers.  They are not optimized as yet, and in the next
> few months 30-40% speedups will be available by upgrades from the 
> manufacturers, as microsoft releases better DDK kits.
> 
> The internal bitmap drivers will be much faster in the next release for
> the 256 case.  (rumour again...but founded on stuff I'va seen).
> 

I have a NEC Multisync Graphic Engine (34010 and VGA on the same card).
I also have both an ATI VGA wonder and a Genoa 5400 board. I have different
Windows directories for each one of them (all of this working on a Lantastic
Network).. I have my DGIS driver installed on the 34010 (MGE Card), at
1024x768 mode. Albeit slower than I care for sometimes, it is actually
faster somewhat faster than the 4 bit (16 colors) drivers of both the
ATI and the Genoa. I have installed the 256 color driver for the ATI, but
found the performance to be totally unaceptable.

Now, there is something that bothers me a bit, and perhaps you may have
a good answer or explanation to it. I have been using Toolbook quite a bit
lately, and when I open certain books, the 'opening screen' (the one
showing the title of the book with the Asymetrix stuff), the screen speed
of this operation is so slow that I have to wait for as much as 30 seconds
for the whole book window to update. When I do this same operation on my
VGA driver, this operation happens significantly faster. Is there any
reason for this to be?

Also, is it reasonable to expect that Windows 3.x will sometimes make
better use of graphics co-processors like the 34010 or the 34020?

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