Sounds like another case for a switchable feature. The difference in
layered planes each with a single filtered texture and a layered texture
on one plane is very noticeable. I always thought of it in terms of a
shadowlessness between the layers of a texture versus the physically
separate ones.

Nathan Kopp wrote:
> 
> Ken wrote:
> >
> >  I understand. I just thought you might take note that this particular
> > experiment had some adverse results. You mention merging with the Super
> > Patch. Will this include the photon mapping features as well as the rest
> > of the odds and ends with the experimental version ? What will you omit
> > with the merge if anything and are there any last minute additions ?
> > Any chance you will have dispersion fired up in time ?
> 
> Actually, dispersion does work now... if you specify a color_map in your
> light source, the colors in the color_map will be dispersed.  I don't
> have any default color maps, but I want to have some available for the
> final release (whenever that is).
> 
> When I merge with the superpatch, you'll probably only get the photon
> mapping stuff.  My experimental stuff will stay in my experimental
> compile.
> 
> I did notice this bug earlier (in Dave Cook's ring), but I didn't
> make it a priority at that time.  I just was playing with it and here's
> what I did:
> 
> When you use 'filter' in the official version of POV, the layers are NOT
> filtered, they are TRANSMITTED!!!  Try it... render your image, then
> change all of the 'filter' keywords to 'transmit' and render again.  You'll
> get the exact same texture... I just tested it in 3.1a.
> 
> The filter keyword only makes a difference for the FINAL filter for the
> sum of all textures (for objects that you see through this object).
> 
> I didn't think this was such a good idea, so I changed it.  The version
> of UVPov that you have still has a bug (things are too dark).  But
> what I have now acts the way I (only my humble opinion, of course) think
> that it SHOULD act.  Filter will filter layers below it.  So things still
> look different (old scenes and all of the standard textures look
> very different).
> 
> So.. when I merge with the superpatch, I won't merge this change, since it
> breaks lots of scenes, but I will leave it in my experimental compile.
> 
> Comments?
> 
> -Nathan

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