Re: [Plib-users] works with Mesa 3.3?

[Steve B. <sjb...@ai...>]

Steve Wendt wrote:
 
> Has anyone tried using plib 1.2 with the 3Dfx Mesa 3.2.1 or 3.3?

Not yet.

>  First I tried 3.3,
> which seemed to have some problems of its own (like #including glext.h, and not
> copying it when you do a make install), as well as causing pui to really screw up
> when using glide on my Voodoo2.

Hmmm - not good - but then 3.3 is experimental/unstable.
 
> I switched to 3.2.1 (which had no internal problems that I could see), and it has the
> same problem:  the top of the screen is either severely distorted or blank, both in
> windowed and fullscreen modes.  Software mode (MESA_GLX_FX=d) works fine.
> The problem occurs in both tux:aqfh and tuxkart, so it's not my code.  :)

Can you either describe this more carefully (What *exactly* do you mean by "severely
distorted"? Does it flick back and forth between 'distorted' and 'blank' in a single
run - even if the eyepoint is stationary?  When it's "blank" - is it black or some
other colour?) - or better still, post a screenshot to a web site somewhere (or if
you must, email to me *privately* - not to the list).  I'm particularly interested
in seeing the "distorted" case - that'll tell me much more than the "blank" case.

> I haven't tested other OpenGL apps yet (I should), but is this more likely to be a
> Mesa or plib problem? 

PLIB doesn't do anything special at the top of the screen - it doesn't even know
when it's drawing at the top of the screen.  I havn't seen this problem on any other OpenGL
implementations - so it's pretty certain to be a Mesa problem - but I *really*
need either a very careful description or a screen dump.

Also, it's working in software mode - and since what Mesa does internally in
software and hardware modes is drastically different - but PLIB does the exact
same thing in both cases - we have to expect Mesa to be at fault.

> Did something get fixed in Mesa that plib was "working around,"....

Nope - nothing that I'm aware of.

> or did something in Mesa break (which seems less likely, since they put
> some 3Dfx specific fixes in this one)?

Let's see the screen dump before passing a final opinion...but I'm betting
on Mesa.

-- 
Steve Baker   HomeEmail: <sjb...@ai...>
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