On Wed, 7 Dec 2011 11:09:13 -0800, Paul Berry <stereotype...@gmail.com> wrote: > When the GS is not in use, the entire URB space is available for the > VS. When the GS is in use, we split the URB space 50/50. > > The 50/50 split is probably not optimal--we'll probably want tune this > for performance in a future patch. For example, in most situations, > it's probably worth allocating more than 50% of the space to the VS, > since VS space is used for vertex caching. But for now this is good > enough.
> assert(brw->urb.nr_vs_entries >= 24); Looks like we'll still be OK in the worst case here: 32KB URB / 2 / (24 entries/URB) / (16 bytes/attribute) = 42 attributes/entry, which is more than we expose even with rounding of entry size and the things in the VUE that aren't attributes. Reviewed-by: Eric Anholt <e...@anholt.net>
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