Vertex weights without an extension??

Hi all,

I am currently writing an OpenGL driver for our 3D engine (for work) and have come across the following problem…

We use beta weights that are attached to vertices under D3D for skinning our models; now I know that there is an extension to do thi, but my card’s ICD doesn’t have it - Graphics Blaster 3D TNT2 - and we are going to need it.

How easy would it be to provide a software version if the extension isn’t available and is there any information anywhere that I can use?

Thanks in advance,
Luke A. Guest,
Bubball.

You should start by looking at the DirectX Immediate mode Bend sample ( a bending banana ) in the DX SDK. Then, you can get more info in the MSDN library. There is a document on skinning. Just do a topic search on “blending weights” and you’ll find it.

Good luck !