Cycles – Rendering with "Adaptive Sampling" Produces Artifacts #75396

New Issue

ronsn · 2020-04-05T00:50:43+02:00

ronsn commented

2020-04-05 00:50:43 +02:00

System Information
Operating system: Linux-5.3.0-45-generic-x86_64-with-debian-buster-sid 64 Bits
Graphics card: GeForce GTX 1660 Ti/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 435.21

Blender Version
Broken: version: 2.83 (sub 11), branch: master, commit date: 2020-04-04 16:55, hash: 505a19ed75
Worked: with a version I compiled a few days ago

Update:
Bisecting the issue gave me:
82a8da0ec3 is the first bad commit.

Short description of error
When rendering with Cycles and Adaptive Sampling turned on the resulting image has artifacts.
Rendering on GPU (and CPU) looks like this:

Rendering on CPU looks like this (please take a look at the full image because in the preview the artifacts are not shown):

It's a little bit late here so I'm not able to make a bisect, but it worked with a version a few days ago :/

Exact steps for others to reproduce the error

Open Blender and click on General on the Splash Screen
Change the render engine to Cycles
Turn on Adaptive Sampling
Press F12 to render

––––––––––––––––––

Stay cool, have fun^^

**System Information** Operating system: Linux-5.3.0-45-generic-x86_64-with-debian-buster-sid 64 Bits Graphics card: GeForce GTX 1660 Ti/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 435.21 **Blender Version** Broken: version: 2.83 (sub 11), branch: master, commit date: 2020-04-04 16:55, hash: `505a19ed75` Worked: with a version I compiled a few days ago **Update:** Bisecting the issue gave me: 82a8da0ec38a70efde4a91957824c67d0e60b8ad is the first bad commit. **Short description of error** When rendering with Cycles and *Adaptive Sampling* turned on the resulting image has artifacts. Rendering on GPU (and CPU) looks like this: ![cycles_adaptive_sampliing_gpu_cpu.png](https://archive.blender.org/developer/F8449214/cycles_adaptive_sampliing_gpu_cpu.png) Rendering on CPU looks like this **(please take a look at the full image because in the preview the artifacts are not shown)**: ![cycles_adaptive_sampliing_cpu.png](https://archive.blender.org/developer/F8449216/cycles_adaptive_sampliing_cpu.png) It's a little bit late here so I'm not able to make a bisect, but it worked with a version a few days ago :/ **Exact steps for others to reproduce the error** 1. Open Blender and click on *General* on the *Splash Screen* 2. Change the render engine to *Cycles* 3. Turn on *Adaptive Sampling* 4. Press `F12` to render –––––––––––––––––– Stay cool, have fun^^

ronsn commented

2020-04-05 00:50:43 +02:00

Added subscriber: @ronsn

Evan Wilson commented

2020-04-05 01:53:57 +02:00

Added subscriber: @EAW

Evan Wilson commented

2020-04-05 01:53:57 +02:00

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

Evan Wilson commented

2020-04-05 01:53:57 +02:00

I can confirm the artifacts when rendering with the CPU.

System Information
Operating system: Windows-10-10.0.18362-SP0 64 Bits
Graphics card: GeForce GTX 470/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 376.51

Blender Version
Broken: version: 2.83 (sub 11), branch: master, commit date: 2020-04-04 16:55, hash: 505a19ed75

I can confirm the artifacts when rendering with the CPU. --- **System Information** Operating system: Windows-10-10.0.18362-SP0 64 Bits Graphics card: GeForce GTX 470/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 376.51 **Blender Version** Broken: version: 2.83 (sub 11), branch: master, commit date: 2020-04-04 16:55, hash: `505a19ed75`

ronsn commented

2020-04-05 01:56:02 +02:00

Update:
Bisecting the issue gave me:
82a8da0ec3 is the first bad commit.

**Update:** Bisecting the issue gave me: 82a8da0ec38a70efde4a91957824c67d0e60b8ad is the first bad commit.

Philipp Oeser commented

2020-04-05 13:26:01 +02:00

Added subscriber: @lichtwerk