RE: [Algorithms] Automatic Texture Atlas generation

[<cas...@ya...>]

Sim Dietrich wrote:
> This scheme is convenient b/c it fits in to the existing raytracing scheme,
> and combined with tracing towards the light and ignoring backfacing hits,
> handles curved and complex surfaces as well.

Yes, I do the same and that solves most of the problems. However, I      
was not talking about that kind of discontinuities. If there's a 0.5 texel
offset between the adjacent surfaces, you will get a discontinuity, even if
the lighting contribution is computed properly on both sides. However, as I
said, if the lighting is smooth or the lightmap resolution is high, that
won't be very noticeable. In any other case, you will probably see this kind
of artifacts.

With ortogonal projections it's quite easy to make the texels match properly,
but that will produce too many charts in order to have a good mapping. With
arbitrary parametrizations it's harder to match chart boundaries.


--
Ignacio Castaño
cas...@ya...



		
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