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GL_EXT_vertex_weighting ?


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#1 Blueshift   Members   -  Reputation: 122

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Posted 13 August 2001 - 05:34 AM

Hi, I would like to HW accelerate my realtime skeletal skinning system, and I stumbled over this GL_EXT_vertex_weighting extension. It seems to be rather interesting, but as far as I got it, it can''t weight between more than 2 matrices per vertex ? Now you can''t do serious skin deformation with max. 2 matrix-blends. Is there any HW out there that supports say blending between 4 matrices ? And how to access that feature ? D3D8 supports up to 4 matrices, I think, there must be a way under OGL to do the same ? A.H aka Blueshift

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#2 zedzeek   Members   -  Reputation: 528

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Posted 13 August 2001 - 02:53 PM

use a vertex program extension im not to sure howmany u could do but it sahould at least be 4

#3 Blueshift   Members   -  Reputation: 122

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Posted 14 August 2001 - 04:06 AM

Now that''s what I''d call a nice and complex extension Unfortunately it''s GeForce3 only.
AFAIK, GeForce2 chipsets can hardware blend up to 4 matrices. But the vertex_weighting extension only handles 2. Isn''t there some way of using the 4 matrices on a GeForce2 ?

A.H aka Blueshift

#4 zedzeek   Members   -  Reputation: 528

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Posted 14 August 2001 - 10:04 AM

its supportted on all geforce cards not just the geforce3 u need the realease 10 drivers to use it. sorry as ive only got a vanta im not much help with this extension




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