Re: [Mesa3d-dev] mesa vbo validation issue [was Re: Wine/Gallium indexed strided VBO fail]

[Keith W. <ke...@vm...>]

On Wed, 2010-03-10 at 07:18 -0800, Corbin Simpson wrote:
> On Wed, Mar 10, 2010 at 6:59 AM, Keith Whitwell <ke...@vm...> wrote:
> > It's great you found a bug, but why all the excitement?  Just track it
> > down and propose a fix.  Mesa's pretty well debugged, but there are
> > always going to be new issues.  I'm not sure why it warrants this type
> > of implicit criticism when you come across something new.
> 
> I wasn't aware of any implicit criticism in my post. If I said
> something wrong, I'm sorry; I'm a little bit fried from studying for a
> final, and what started as a relaxing diversion from math review has
> kind of turned into a multi-package bug and increased my frustration
> more than just a bit.
> 
> I'll check the specs later and see if there's validation code missing,
> and also see if Wine needs similar patches.
> 
> Again, sorry and thanks.

No problem Corbin.

I suspect this is because DX9 allows negative offset values in some
surprising places.  Basically I think you've hit two bugs - one wine is
trying to send Mesa an illegal negative value instead of translating it
away somehow, and secondly we are accepting it...

Ketih