POV-Ray: Newsgroups: povray.beta-test: SSLT and Photons

POV-Ray : Newsgroups : povray.beta-test : SSLT and Photons		Server Time 18 May 2024 13:26:29 EDT (-0400)

From: Mike Raiford
Subject: SSLT and Photons
Date: 26 Feb 2011 07:05:08
Message: <4d68ec74$1@news.povray.org>

This may be corrected already, but I've noticed if an object with SSLT 
is set to gather photons, it really alters the appearance of the object, 
causing it to be much darker than it was.

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From: clipka
Subject: Re: SSLT and Photons
Date: 26 Feb 2011 13:56:34
Message: <4d694ce2@news.povray.org>

Am 26.02.2011 13:04, schrieb Mike Raiford:
> This may be corrected already, but I've noticed if an object with SSLT
> is set to gather photons, it really alters the appearance of the object,
> causing it to be much darker than it was.

That is to be expected: POV-Ray's code for classic illumination handling 
totally suppresses light shining through any photon target to any photon 
gathering object, in order to delegate those computations to the photons 
code. As SSLT does not yet support photons, that leaves the SSLT object 
in full shadow even if the shadow-casting object is fully transparent.

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