[sldev] branches/shadow-draft missing llrender.cpp

[Soft]

On Wed, May 28, 2008 at 4:11 PM, Tofu Linden <tofu.linden at lindenlab.com> wrote:
>
> The unexpected 'bonus' tessellation on flat surfaces does nothing
> to help describe the shape of the geometry but exists (AFAIK) as
> a hack to make per-vertex lighting look significantly less ugly.
>
> The shadow-draft branch's per-pixel lighting almost certainly
> makes the extra tessellation redundant, but on the other hand
> I don't think there's data to suggest that the extra polygons
> are an appreciable performance hit (not that they help).

Actually, they can help tremendously. Our ginormous 4 megabyte 1k by
1k RGBA textures blow out the texture cache on many a graphics card.
Tesselating large surfaces increases the likelihood of cache hits.