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Maniphest T96490

Denoise + Pixel Size + Render Region = Artifacts in Viewport
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Description

System Information
Operating system: Windows-10-10.0.19044-SP0 64 Bits
Graphics card:
NVIDIA GeForce RTX 2080 SUPER/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 472.84,
NVIDIA GTX 1080.
Optix is used.

Blender Version
Broken: version: 3.2.0 Alpha, branch: master, commit date: 2022-03-14 19:06, hash: rBfc259d4c30cb
Worked: Don't know.

Short description of error
When the pixel size for render preview is increased, (2X, or 4X), Render region is set, and viewport denoiser is turned on, the viewport render gives weird artifacts.

Exact steps for others to reproduce the error
Turn on render preview, and zoom in this file:

Pixl Size Denoise Render region.blend828 KBDownload

Event Timeline

Paulius Mscichauskas (freemind) created this task.Mar 15 2022, 11:04 AM
Raimund Klink (Raimund58) changed the task status from Needs Triage to Needs Information from User.EditedMar 15 2022, 11:51 AM
Raimund Klink (Raimund58) added a subscriber: Raimund Klink (Raimund58).

Can not reproduce on a single GTX 1070.
Please update your GPU driver and report back.

Paulius Mscichauskas (freemind) added a comment.Mar 15 2022, 12:11 PM

I noticed, that the artifacts do not appear if I'm only using one of the two GPU's.
The artifacts only appear if both GPUs are used.

Raimund Klink (Raimund58) added a comment.EditedMar 15 2022, 12:16 PM

Since you have two different GPUs that alone calls for issues.
Also, please update your drivers.
And remember to restart the PC after you did.

Paulius Mscichauskas (freemind) added a comment.Mar 18 2022, 11:17 AM

I have installed the latest NVIDIA studio driver, then restarted my computer.
That did not fix anything.

It also seems, that rendering with both GPU's might actually be slower, then just rendering with the RTX one? Will have to test that.

Paulius Mscichauskas (freemind) added a comment.Apr 4 2022, 3:28 PM

Tested it.
Rendering with both cards is faster overall.
But orbiting in render preview, with only the RTX card seems more responsive on the first few samples, with Optix denoising on...

Thomas Dinges (dingto) added a subscriber: Thomas Dinges (dingto).Dec 15 2022, 5:00 PM

Is this still an issue for you in Blender 3.4?