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SPPM handling of portals

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SPPM handling of portals

Post Mon Jun 19, 2017 8:00 am

Hi David

I am still doing test about SPPM for a tutorial and I have a question about how this integrator is handling portal lights. In the standard PM integrator, in the usual configuration users disable firing photons from the background (yet the background is sampled for DL) and get portals to shoot "only photons" in front of windows, to get a much higher density of photons on the photon map.

However, if I try the same strategy in SPPM, I do not get the expected much higher density of photon hits in each pass, something does not work as in the standard PM integrator. Either the portals are not working or the balance of sources is not the same. am I right?
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Samo
 
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Re: SPPM handling of portals

Post Mon Jun 19, 2017 8:20 pm

Hello, Álvaro.

I will take a look.
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David Bluecame
 
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