[Bf-funboard] GPU accelerated rendering
tbaldridge at alertacademy.com
Fri Oct 22 16:23:10 CEST 2004
Okay, this is getting rediculus. I have been interested in GPU rendering
for blender for some time. And I a have researched it quite alot. I must
say that I am rather suprised at how little work it really takes.
Basicly there are two ways of doing GPU rendering:
OpenGL + Cg (or equivalent) - In this type of rendering, the renderer
uses OpenGL to draw the scene and Cg (Nvidia's free GPU programming
language) for shading. This is the fastest, but is the hardest to get
raytracing and GI working in.
Cg - Uses only Cg for rendering. Basicly all the triangle data is handed
to the GPU via a texture, and then each and each output pixel is
calculated in the GPU. For more information look up Purcell's documents
under raytracing on www.gpgpu.org.
It can be done. It takes a lot of work, and can be very frustrating (Cg
is a pain to debug). But I would be willing to work with someone on this
Note: the minimum requirements for somthing like this would be GeForce
FX ($100) or equivalent.
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