[Algorithms] indexing...

[Andrew <an...@aw...>]

hi!

I was just wondering if anyone had a good solution to tackling this
problem...

I'm doing soft skinning on the vertices in a mesh, however I'm using
an indexbuffer to draw the polygons.  Since its in an indexbuffer I've had
to duplicate vertices which are not unique(same normal/uv).  I don't want
to perform the skinning calculation on any more vertices than I have to, so
after I do the skinning on the unique vertices I copy the results to the
nonunique
vertices, before uploading them to the vertexbuffer.  Surely there is
another way
to do this without doing this copying.  I thought perhaps if I used 3
vertexbuffers (xyz, normals, uvs)
then each would have a seperate indexbuffer..however this doesn't seem to be
the case.

Well, I know what I'm doing sounds ghastly..but I just can't think of
another way to do it.
Hope you understand the problem I'm trying to explain :)

Andrew

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