On 11/2/06, Keith Whitwell <[EMAIL PROTECTED]> wrote:
> Jerome Glisse wrote:
> > On 11/2/06, Keith Whitwell <[EMAIL PROTECTED]> wrote:
> >> Keith Whitwell wrote:
> >>> OK, the first round of work on the VBO branch seems to have gone quite
> >>> smoothly.  It'd be great if a couple of the key r200/r300 people could
> >>> check the branch out and verify whether I've broken those drivers or not.
> >>>
> >>> It'd be particularly interesting to see if someone (Aapo?) can take a
> >>> look at the disabled vtxfmt_a code and see if it is easy to port that
> >>> over to the new archiecture.  I've got a feeling it should be fairly
> >>> straight-forward, as it's simple to fallback to the tnl/ module for any
> >>> unexpected or non-handled situations.
> >> I took a quick look at this and it seems doable.  I sketched out a
> >> simplified approach that just attempts to hook the existing code into a
> >> _radeon_draw_prims() callback.  It looks like it might work, but it
> >> would be better to try for a deeper integration.
> >>
> >> I'm pretty bullish about the vbo code & would like to see an early
> >> merge, so please take a look at this.
> >>
> >> Keith
> >>
> >>
> >
> > I investigated recently a bug (8348) and we don't check if in
> > DrawRangeElement max - min won't requiert a memory area
> > bigger than what we can have with DMA (which if i am right
> > can't be bigger than RADEON_BUFFER_SIZE * 16). Do you see
> > any easy they to work around this. I will try to test VBO branch
> > today and complete your change.
>
> OK.  I've got a couple of bugs to fix yet, and I've still got to try
> running glean, etc, so it'll be a couple of days before anything
> happens.  But it would be good to have the r200/r300 drivers up to speed
> prior to a merge.
>
> Keith
>

I have tried to play a bit with that but i segfault in vbo_exec_array.c line 127
with varray in progs/redbook know bug or something from my side ?

Btw i have thinked a bit more about the need to update max-min vertices
in drawelements and drawrangeelements and i don't see an easy way to
split the rendering as we have to go throught all indices and make sure
that (max-min)*primsize never need more memory than what dma alloc
can give us. Don't you have similar problem with intel ?

best,
Jerome Glisse

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