[Radiance-general] Slow rendering with transparant textures

[Greg Ward]

Hi Lars,

> BTW, as it is related to textures and came to my mind some days ago  
> - it should be quite doable to modify the source of mkillum in a  
> way that it outputs polygons with a prerendered ambient calculation  
> mapped onto them, right? It would be one step towards a nice vrml/ 
> x3d-export from radiance scenes, as the x3d- / vrml-viewer could  
> render the direct light, while the view-point independent ambient  
> calculation would be left to radiance. The only problem would be  
> the need of correct surface normals for the whole model.

I don't know if I would call this 'easy' -- you would have to mesh  
the surfaces in some way, which is not done by mkillum at all.   
Others have worked on similar converters, but I don't know how far  
they got.  Richard Gillibrand (formerly of Bristol Univ.) and his  
2003 workshop presentation springs to mind.  Here is a related  
earlier post, relating also to the presentation by Bernhard Spanlang  
in 2002.

	http://www.radiance-online.org/pipermail/radiance-dev/2005-January/ 
000551.html

Hope this helps.
-Greg