Dearl All, we have a large indexed faceset with about 1 million polygons.In addition we have about 20 to 100 time steps, each including new positions (or displacement) for all vertices.
This adds up to quite a lot of memory. Does anybody have a good idea on how to animate this efficiently?
In OpenGL we had a nice solution:we created one VBO for each timestep, then activated the VBO for the current time-step as texture coordinates and then simply let the vertex shader add the displacement to the vertex position.
We could even do a lerp to get a smoothed animation. For doing the animation we simply had to cycle through the VBOs. In OpenInventor we simply wrote a custom node that included the OpenGl code. In OpenSG we could not find any efficient solution yet.Creating a new geometry node for each timestep wastes to much memory in this case.
Any idea? Bests, Stefan -- ------------------------------------------------------------------- Stefan Wundrak Fraunhofer Institute for Computer Graphics (IGD) Industrial Applications Fraunhoferstrasse 5 64283 Darmstadt - Germany Tel: +49 6151 155-470 Fax: +49 6151 155-299 E-mail: [EMAIL PROTECTED]Web: www.igd.fraunhofer.de/igd-a2/
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