ReSTIRGI #31
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ReSTIRGI #31
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PearCoding
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Sep 5, 2022
| @@ -1,4 +1,5 @@ | |||
| // Creates a purely two-sided diffuse BSDF | |||
| // note from Eric: isn't kd in make_bsdf_sample() wrong (no pdf and cos applied)? | |||
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The weight returned by the make_bsdf_sample is already divided by the pdf. The sampler of the diffuse bsdf has cos/pi. Dividing by it returns only kd.
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Stehe gerade wohl auf dem Schlauch, also beim orennayar bsdf hat man ja folgendes:
color_mulf(eval(gdir, out_dir), 1 / sample.pdf), was als color mitgegeben wird.
Beim purely diffuse bsdf jedoch nur die reflectance, also nur das kd, ohne dass da durch die pdf geteilt wird oder der cosinus multipliziert wird, oder nicht?
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In orennayar habe ich es einfach nicht selbst ausgerechnet. In diffuse habe ich die optimierung einfach selber gemacht.
PearCoding
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PearCoding
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Co-authored-by: Eric <Windholz.Eric@yahoo.de>
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