Render Settings OpenCL / BiDir

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GeorgeP
Posts: 1
Joined: Sat Aug 04, 2018 12:38 pm

Render Settings OpenCL / BiDir

Post by GeorgeP » Sat Aug 04, 2018 12:51 pm

Just hoping someone can help me come up with a good workflow for using Luxcore, the tutorials and wiki seem quite out of date. I am just trying to figure out the best/fastest settings for a simple chrome balls in a room with one sun lamp type scene. I tried with OpenCL and Path and after about an hour and 25,000 samples it was still quite far from resolving the caustics.

(render)
Luxcore-Render.png
I'm trying now with BiDir and Metropolis and it's doing its thing but I'm getting about 197k samples/sec as opposed to my 3.5M or so with the GPU/CPU with Path tracing (GTX 960). Will BiDir ever be GPU accelerated or is it mathematically not suited to GPU processing?

On another note, about network rendering, we have a few machines here in the house is it possible to have them all work on a single frame at once (ie: different tiles, although Luxcore doesn't seem tile based but progressive)

(scene)
Luxcore-Noodling.blend
(542.44 KiB) Downloaded 17 times

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Sharlybg
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Posts: 747
Joined: Mon Dec 04, 2017 10:11 pm
Location: Ivory Coast

Re: Render Settings OpenCL / BiDir

Post by Sharlybg » Sat Aug 04, 2018 2:32 pm

Here you go : modified file : https://drive.google.com/open?id=1GxSxM ... HLAKeRzNcK

1/ i've change your tonemap setting linear (=1) auto off

2/ sun power reduced to .0001

3/ sky to .002

4/ clamp value = 10

the concept is to work with small sun power ( SUN is the most powerfull light source in luxcore) value so you can use little clamping number.
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