Pool test scene
Pool test scene
Bidir 35k samples:
Path 7051k samples:
Re: Pool test scene
At such high sample counts it's almost useless to continue rendering because this is exceeding the limits of floating point precision.
Nice scene, I wonder why the caustics are so different.
- Egert_Kanep
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Re: Pool test scene
How can you render caustics with path engine?
Re: Pool test scene
If the light source can be intersected by a ray (like area lights, sun or HDR), it can be done (even if most of the times will produce just a lot of fireflies if the light is not very large and easy to hit).
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Re: Pool test scene
Try using the path engine with metropolis sampler. In my experience, this is the best method for rendering SDS caustics such as this.
Re: Pool test scene
I was starting to think it wasn't going to get any better at about 3M.
I'll give it a go.jgrover110 wrote: ↑Wed Aug 15, 2018 7:44 pm Try using the path engine with metropolis sampler. In my experience, this is the best method for rendering SDS caustics such as this.
how it looks in old lux for comparison:
Re: Pool test scene
5000k Path + Metropolis.
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Re: Pool test scene
The absorption looks stronger in that image. Are all the values being kept the same? Also, with the old Lux image, the refraction doesn't look as strong.
Re: Pool test scene
Yes they are same values, all i changed was rendering method.jgrover110 wrote: ↑Sat Aug 18, 2018 10:47 am The absorption looks stronger in that image. Are all the values being kept the same? Also, with the old Lux image, the refraction doesn't look as strong.
The old lux scene uses a cauchy C value, the new has cauchy B. I just copied the value, but I think it should have been converted somehow.
- FarbigeWelt
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Re: Pool test scene
Sprocket wrote: ↑Sat Aug 18, 2018 12:38 pmYes they are same values, all i changed was rendering method.jgrover110 wrote: ↑Sat Aug 18, 2018 10:47 am The absorption looks stronger in that image. Are all the values being kept the same? Also, with the old Lux image, the refraction doesn't look as strong.
The old lux scene uses a cauchy C value, the new has cauchy B. I just copied the value, but I think it should have been converted somehow.
Are you sure? Any how..
I like your test pool scene. Especially the one showing caustics with path rendering.
Do you use volumes?
I got good results with the assumption: If you're medium is 2 m deep and you have an absorption of 2 medium gets the color of absorption at ground (if you look into the medium 90° from its surface).
Light and Word designing Creator - www.farbigewelt.ch - aka quantenkristall || #luxcorerender
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