Adaptive sampling artifacts #75388

New Issue

Jonathan Dent · 2020-04-04T20:50:26+02:00

Jonathan Dent commented

2020-04-04 20:50:26 +02:00

Just rebuilt Blender from scratch this morning. Upon rendering with adaptive sampling (both CPU and GPU), there is bad artifacting that resembles salt and pepper noise. This does not occur with non-adaptive rendering (CPU and GPU)

Steps to reproduce:

Open new file, select 'Cycles' as the render engine and enable Adaptive sampling, then render.

Git Revision: e455536943

Just rebuilt Blender from scratch this morning. Upon rendering with adaptive sampling (both CPU and GPU), there is bad artifacting that resembles salt and pepper noise. This does not occur with non-adaptive rendering (CPU and GPU) Steps to reproduce: Open new file, select 'Cycles' as the render engine and enable Adaptive sampling, then render. ![image.png](https://archive.blender.org/developer/F8448538/image.png) Git Revision: e455536943a862334a765fdef7edfd16b2e9b5b1

Jonathan Dent commented

2020-04-04 20:50:26 +02:00

Added subscriber: @jdent02

blender-admin commented

2020-04-04 20:50:26 +02:00

#75411 was marked as duplicate of this issue

blender-admin commented

2020-04-04 20:50:26 +02:00

#75396 was marked as duplicate of this issue

Jonathan Dent commented

2020-04-04 20:52:19 +02:00

This is with the adaptive threshold set to .001

![image.png](https://archive.blender.org/developer/F8448547/image.png) This is with the adaptive threshold set to .001

Philipp Oeser commented

2020-04-05 13:25:20 +02:00

Added subscribers: @brecht, @lichtwerk

Philipp Oeser commented

2020-04-05 13:25:20 +02:00

Changed status from 'Needs Triage' to: 'Confirmed'

Philipp Oeser commented

2020-04-05 13:25:20 +02:00

Caused by 82a8da0ec3.

CC @brecht

Caused by 82a8da0ec3. CC @brecht

Philipp Oeser commented

2020-04-05 13:26:23 +02:00

Added subscribers: @ronsn, @EAW

Philipp Oeser commented

2020-04-05 13:42:15 +02:00

Added subscriber: @Jewls

Jason Clarke commented

2020-04-05 17:51:57 +02:00

Added subscriber: @JasonClarke

Alaska commented

2020-04-06 07:23:02 +02:00

Added subscriber: @Alaska

Alaska commented

2020-04-06 07:23:02 +02:00

Just thought I'd add to this. Using build 505a19ed75 on Linux I experience this issue. However, I've noticed it affect's many other passes than just the just the beauty pass. Here's a list:

Affected Passes:
Combined (standard render)
Normal
UV
AO
Emission
Environment
Mist Pass
Diffuse Colour
Glossy Colour
Transmission Colour
Volume Direct
Volume Indirect
Debug Sample Count

Passes with no issues as far as I can tell:
Depth
Vector
Shadow
Diffuse Direct
Diffuse Indirect
Glossy Direct
Glossy Indirect
Transmission Indirect
Noisy Image
Denoising Normal
Denoising Albedo
Cryptomatte

Luckily for us, this means that we can use the "Noisy Image" pass in a compositor if we still want our image with adaptive sampling until a patch is out.

These are the passes I'm unsure about:
Object and Material ID
Transmission Direct
Denoising Depth
Denosing Clean
Render time

Just thought I'd add to this. Using build 505a19ed75b2 on Linux I experience this issue. However, I've noticed it affect's many other passes than just the just the beauty pass. Here's a list: **Affected Passes:** Combined (standard render) Normal UV AO Emission Environment Mist Pass Diffuse Colour Glossy Colour Transmission Colour Volume Direct Volume Indirect Debug Sample Count **Passes with no issues as far as I can tell:** Depth Vector Shadow Diffuse Direct Diffuse Indirect Glossy Direct Glossy Indirect Transmission Indirect Noisy Image Denoising Normal Denoising Albedo Cryptomatte Luckily for us, this means that we can use the "Noisy Image" pass in a compositor if we still want our image with adaptive sampling until a patch is out. **These are the passes I'm unsure about:** Object and Material ID Transmission Direct Denoising Depth Denosing Clean Render time

blender-admin commented

2020-04-06 23:19:01 +02:00

This issue was referenced by blender/cycles@0c170f7dae

This issue was referenced by blender/cycles@0c170f7daebf6a5168511ec16dbc763416f61423

blender-admin commented

2020-04-06 23:19:01 +02:00

This issue was referenced by e05552f7c4

This issue was referenced by e05552f7c4ac27faa510048e8c010e4323acb569

Brecht Van Lommel commented

2020-04-06 23:24:18 +02:00

Changed status from 'Confirmed' to: 'Resolved'

Brecht Van Lommel closed this issue

2020-04-06 23:24:18 +02:00

Brecht Van Lommel self-assigned this 2020-04-06 23:24:18 +02:00

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Adaptive sampling artifacts #75388