Hugo wrote:
> 
> Well I'm not into the source code, but what about to precalculate just the
> bit of isosurface, that is currently rendering? I mean, POV-Ray renders
> pixel by pixel, line by line. For each pixel, many things has to be done,
> but it shouldn't be necessary to calculate the surface, for that pixel, more
> than once.. I wonder if it's calculated many times, since some objects like
> iso's takes much longer.

I don't really understand, without reflection/refraction you have usually
only two intersection tests per pixel, where do you want to avoid
calculations?

There is already a cache for the last ray that speeds up renders of
isosurfaces with large 'empty' areas, for example a torus with small minor
radius.

Christoph

-- 
POV-Ray tutorials, IsoWood include,                 
TransSkin and more: http://www.tu-bs.de/~y0013390/  
Last updated 18 Mar. 2002 _____./\/^>_*_<^\/\.______

Post a reply to this message