Hi Ben!

Yeap, as I said, a lot of work is needed to make the MGA driver really 
faster, I am too in the phase of discovering how all this stuff works, 
so it is not relly easy for me to tell you everything that needs to be 
done in it.

About the AGP texturing, a lot of work has been by ralf willenbacher and 
friends :), and you can keep in touch in what's going on about it by 
reading the thread "mga.o still doesn't use AGP memory for g200" in this 
news group (you'll find a patch too).

About Video flipping, this is something bigger that I think is needed to 
improve the performance of the driver. I've already started to do some 
work to enable it, and if it gets somewhere, this mailing list gonna be 
the first one to know it.

And if you're looking for documentation to improve your knowledge in 
graphics driver, well it may scares you, but the best thing you can do 
is going deeply into the code and begin to trace... but you may find a 
lot of information about DRI on the DRI project web page 
(dri.sourceforge.net), and the old Precision Insight site web page 
(www.precisioninsight.com/piisights.html).

Enjoy!

Karl


Ben Smith wrote:

> I'm really sorry about that.  I was going to cancel and I(obviously) wasn't 
> paying enough attention.  I was going to cancel because I thought I would 
> look at the source some before saying anything, but since I've inadvertently 
> delurked I may as well say it anyway.
> 
> I have a matrox G400.  I have Tribes 2.  I want better performance, 
> it's not playable for me right now.  I know c well, but I am by no 
> means an expert.  I also know nothing of hardware drivers.  I would 
> like to learn in order to improve the performance.  I'm a registered
> matrox developer, so I have access to the card register specs they
> provide.
> 
> I wanted to look at the code before sending my mail to get some idea 
> as to how communicating with the video card works, but if anyone has
> references to introductory material to this sort of thing to help get 
> me off to a good start I would love to use them and learn.  I'm eager
> to get my feet wet, though I can't promise I'll deliver due to being 
> a novice in this particular area.  I appreciate any help that can be 
> sent my way.
> 
> Also, does anybody know what is being handled in software for the 
> mga drivers that can be handled in the hardware?  Karl Lessard replied
> to this same thread saying he was interested in doing some of the work
> for these cards, and listed a few things, AGP texturing and video page
> flipping, that could provide performance gains.  Are there other things?
> Karl, are you still interested?  Perhaps we have some things we can 
> gain through cooperation.
> 
> Thank you, and sorry about the slip-up,
> -b
> 
> 
> On Fri, 25 May 2001, Ben Smith wrote:
> 
>> 
>> 
>> On Wed, 23 May 2001, Brian Paul wrote:
>> 
>>> We haven't done any real work on the MGA driver in a long time.
>>> Nobody's funding us to do so.
>>> 
>>> You may get a bit of a performance improvement when we move
>>> to Mesa 3.5-based driver.  (still underway)
>>> 
>>> -Brian
>>> 
>>> _______________________________________________
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>>> 
>> 
>> 
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> 
> 
> 
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