PhotonGI animations and flickering.

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daros
Posts: 274
Joined: Thu Dec 12, 2019 3:25 pm
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PhotonGI animations and flickering.

Post by daros »

Hi to everyone.
I'm trying to make some animations using luxcore+photonGI.

To be honest I'm very very happy with the results and soon i will publish a bunch of HD animations.
However i encounter problems in very complex scenes, scenes which i never have been able to animate decently using any other rendering engine.

At his link you find 4 animations, each with a different clamping value. The clamping value is the name of the file. The only clamping which improves the flickering turns off the most important lights.
The 3 full HD frames are using clamping 200.000. Those are 2000 samples/pixel images but they still show strong flickering.
The animation "simple scene 200000000000000000.mp4" was created with clamping 200000000000000000 and it looks perfect to me but is has 1/10 of polygons, no transparencies, and 1/100 of light sources.
Does someone has an advice about how to improve the animation quality of such a type complex scenes?

https://drive.google.com/drive/folders/ ... sp=sharing

Thanks for any suggestion!

Those are the other rendering paarameters is have in this scene

light.maxdepth 64
path.maxdepth 256
sampler.metropolis.maxconsecutivereject 512
renderengine.type "PATHCPU"
sampler.type "SOBOL"
film.filter.type "NONE"
lightstrategy.type "LOG_POWER"
sampler.metropolis.largesteprate 0.4
sampler.metropolis.imagemutationrate 0.10000000000000001
film.filter.width 1.5
film.opencl.enable 0
path.forceblackbackground.enable 0
filesaver.renderengine.type "BIDIRCPU"
filesaver.format "TXT"
path.clamping.variance.maxvalue 200000
scene.epsilon.min 0.000001
scene.epsilon.max 0.1
path.albedospecular.type "REFLECT_TRANSMIT"
path.albedospecular.glossinessthreshold 0.05
path.photongi.photon.maxcount 20000000
path.photongi.photon.maxdepth 8
path.photongi.glossinessusagethreshold 0.049
path.photongi.indirect.enabled 1
path.photongi.indirect.maxsize 0
path.photongi.indirect.haltthreshold 0.05
path.photongi.indirect.lookup.radius 0
path.photongi.indirect.lookup.normalangle 10
path.photongi.indirect.usagethresholdscale 8
path.photongi.caustic.enabled 0
path.photongi.caustic.maxsize 100000
path.photongi.caustic.lookup.radius 0.075
path.photongi.caustic.lookup.normalangle 10
path.photongi.caustic.updatespp 8
path.photongi.caustic.updatespp.radiusreduction 0.96
path.photongi.caustic.updatespp.minradius 0.003
path.photongi.persistent.file /mnt/z/MATADOR/AnimOutput/Untitled.pgi
path.hybridbackforward.enable 0
path.hybridbackforward.partition 0.8
path.hybridbackforward.glossinessthreshold 0.049
zuljin3d
Posts: 76
Joined: Sun Apr 08, 2018 12:13 pm
Location: Moscow

Re: PhotonGI animations and flickering.

Post by zuljin3d »

Usually the flicker appears when you use any denoiser.
Actualy sorry for my google translate english :)
daros
Posts: 274
Joined: Thu Dec 12, 2019 3:25 pm
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Re: PhotonGI animations and flickering.

Post by daros »

Sorry i forgotten to tell that those animations already have a strong neat video time interpolated denoising.
daros
Posts: 274
Joined: Thu Dec 12, 2019 3:25 pm
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Re: PhotonGI animations and flickering.

Post by daros »

i also added a new animation "clamping 2000000 caustics caching on.mp4" which has 2000 SPP, 2000000 clamping and caustics caching on. Still there is a lot a flickering.
Any ideas what i can do?
daros
Posts: 274
Joined: Thu Dec 12, 2019 3:25 pm
Location: inside human language
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Re: PhotonGI animations and flickering.

Post by daros »

This is the best i got for the moment. 20.000.000 clamping and light tracing on with treshold 0.01. Any idea about how to reduce the flashes?
https://drive.google.com/file/d/1bkpWxr ... sp=sharing
PetrT
Posts: 81
Joined: Sun Dec 02, 2018 6:13 pm
Location: Russia
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Re: PhotonGI animations and flickering.

Post by PetrT »

May be try to render lights on wall separatly
and when mix them with all
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