Easy Cloud Rendering Quality Settings

Started by D.A. Bentley, September 21, 2018, 05:12:00 pm

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D.A. Bentley

I'm trying to render a scene with three Easy Clouds, and it is so slow even on my 16-Core Threadripper.  There must be some settings I can change to achieve good-great quality without so much chugging (I hope).

For Rendering Quality:
I have Anti-aliasing set to 6 and Defer atmo/cloud turned On.

For GI:
I have GI cache detail 2, GI sample quality at 4, and Cloud GI quality set to "Still/Very high"
I have Cloud GI max ray depth set to 3 and Voxel scattering quality at 50.

For Easy Clouds:
Acceleration cache is set to Conservative.
What do I set the "Millions of voxels" to under the Optimization tab?  I put 10.
What about Ray-marching under Quality under the Quality tab?  I left it at 2.

Any other suggestions?

My final render is going to be a 4000x2000 Spherical Cam Render (Skybox).

Thanks,

Derek





Matt

1) With multiple cloud layers, this one is really important:

GI Settings -> Cloud GI max ray depth = 1 or 2

2) Both of the following changes *combined* should reduce render times:

GI Settings -> Voxel scattering quality = 150
Edit Sampling -> First sampling level = 1/16th

3) Ray march quality should rarely go above 1. Your AA is high enough that you should reduce this to 0.5 or 0.75.

If you follow all of those steps you should see a big improvement.
Just because milk is white doesn't mean that clouds are made of milk.

D.A. Bentley

Thanks Matt!  Kicking off my render now.  :)

Derek

ackdoh

Quote from: Matt on September 21, 2018, 09:04:48 pm1) With multiple cloud layers, this one is really important:

GI Settings -> Cloud GI max ray depth = 1 or 2

2) Both of the following changes *combined* should reduce render times:

GI Settings -> Voxel scattering quality = 150
Edit Sampling -> First sampling level = 1/16th

3) Ray march quality should rarely go above 1. Your AA is high enough that you should reduce this to 0.5 or 0.75.

If you follow all of those steps you should see a big improvement.

Thx for the settings! I was wondering also, if I were to do an animated sequence for easy clouds, what render settings would you generally recommend for a non noisy look on the clouds?
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WAS

Quote from: ackdoh on January 15, 2020, 12:54:04 pm
Quote from: Matt on September 21, 2018, 09:04:48 pm1) With multiple cloud layers, this one is really important:

GI Settings -> Cloud GI max ray depth = 1 or 2

2) Both of the following changes *combined* should reduce render times:

GI Settings -> Voxel scattering quality = 150
Edit Sampling -> First sampling level = 1/16th

3) Ray march quality should rarely go above 1. Your AA is high enough that you should reduce this to 0.5 or 0.75.

If you follow all of those steps you should see a big improvement.

Thx for the settings! I was wondering also, if I were to do an animated sequence for easy clouds, what render settings would you generally recommend for a non noisy look on the clouds?
If your still is fairly noiseless your animation should follow suit. You may look into saving your cache though.