Light Strategies in Luxcore

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sigstan
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Light Strategies in Luxcore

Postby sigstan » Sun Jul 03, 2016 3:12 pm

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Luxcore_light_strategies_v1.pdf
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Emissive_uniform.jpg
emissive_power.jpg
Emissive_log_power.jpg
Last edited by sigstan on Wed Jul 13, 2016 6:43 pm, edited 15 times in total.
/Sigstan

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Marcel2586
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Re: Light Strategies in Luxcore

Postby Marcel2586 » Sun Jul 03, 2016 3:17 pm

Great! thank you!
this would be funny if it weren't happening to me :shock:

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Nathanomir
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Re: Light Strategies in Luxcore

Postby Nathanomir » Sun Jul 03, 2016 8:57 pm

Excellent! Thank you.
Sometimes, my wife wakes up grumpy. Sometimes, she lets me sleep.

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Nathanomir
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Re: Light Strategies in Luxcore

Postby Nathanomir » Mon Jul 04, 2016 3:33 pm

I threw together a quick test to test this strategy on one of my favorite props from the R2.5 era -- the candle from Faveral's Medieval Tavern. Unlike most 3D candlemakers, he uses a mesh prop for the flame instead of a plane with a transmap. It was easy to convert it to a mesh light and get great ambiance. Lux 1.5 didn't much like it. The mesh slogged down the render time, overriding any increase in speed, and causing massive grain.

Using the above light strategy, and adding the POWER line, this is the result at only 100 s/P (five minutes). At the last second, I threw in some candle glow in Lux.

Image

Lights are just the candle with the flame turned into a mesh light, and one of Lee's IBL spots. The scatter is expected from a scene that is only partially cooked. But overall, it looks like the Medieval Tavern candle is back in action.

So, thank you again, Sigstan!
Sometimes, my wife wakes up grumpy. Sometimes, she lets me sleep.

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sigstan
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Re: Light Strategies in Luxcore

Postby sigstan » Sat Jul 09, 2016 3:45 pm

/Sigstan

Fatbear
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Re: Light Strategies in Luxcore

Postby Fatbear » Wed Jul 13, 2016 4:24 am

Amazing info, thanks!

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sigstan
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Re: Light Strategies in Luxcore

Postby sigstan » Wed Jul 13, 2016 6:44 pm

I have added a PDF version of the guide to the original post.
/Sigstan

SamWM
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Re: Light Strategies in Luxcore

Postby SamWM » Mon Jul 18, 2016 5:25 pm

Just a quick question - could you change the light strategy on an already partly rendered file? For instance, do uniform for an hour or so, then change to one of the others? Perhaps for doing a test to see which lights you may want to use for a long render in case you aren't quite sure what to start with, or perhaps just for creative effect

pciccone
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Re: Light Strategies in Luxcore

Postby pciccone » Mon Jul 18, 2016 5:31 pm

Nope, if you change strategy then you need to restart.
--
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Kimberly58
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Re: Light Strategies in Luxcore

Postby Kimberly58 » Sun Jul 24, 2016 10:45 am

I have another question, and I'm pretty sure the answer is no, you need to start over. I have a scene that I let render over night only to find I had something I need to modify in the scene. Will I need to export the the .lxs file again and change the light strategy, or will it keep the change since I'm not re naming the file?


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