OIDN GPU denoise: Black/broken render when using large output image sizes #120686

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BAI · 2024-04-16T05:37:15+02:00

BAI commented

2024-04-16 05:37:15 +02:00

System Information
Operating system:Windows-10-10.0.22621-SP0
Graphics card:NVIDIA RTX A4000/PCIe/SSE2

Blender Version
Broken: version: 4.1.1, branch: blender-v4.1-release, commit date: 2024-04-15 15:11, hash: e1743a0317, type: Release
Worked: (newest version of Blender that worked as expected)

Short description of error

Exact steps for others to reproduce the error
Based on the default startup or an attached .blend file (as simple as possible).

**System Information** Operating system:Windows-10-10.0.22621-SP0 Graphics card:NVIDIA RTX A4000/PCIe/SSE2 **Blender Version** Broken: version: 4.1.1, branch: blender-v4.1-release, commit date: 2024-04-15 15:11, hash: e1743a0317bc, type: Release Worked: (newest version of Blender that worked as expected) **Short description of error** **Exact steps for others to reproduce the error** Based on the default startup or an attached .blend file (as simple as possible).

PixPin_2024-04-16_11-31-15.png

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BAI added this to the 4.1 milestone 2024-04-16 05:37:15 +02:00

BAI added the

labels 2024-04-16 05:37:15 +02:00

YimingWu commented

2024-04-16 07:35:28 +02:00

Hi @BAI , Could you provide us with a test file? Any older version you can correctly render? Thanks!

YimingWu added

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Status

Needs Triage

labels 2024-04-16 07:41:12 +02:00

BAI commented

2024-04-16 09:12:31 +02:00

Hi @BAI , Could you provide us with a test file? Any older version you can correctly render? Thanks!

Only version 4.1 will have this problem, not version 4.0. In version 4.1, just create a new file and set the output pixel to 15000*10800 or above, and this will happen.

The following is a file I tested

> Hi @BAI , Could you provide us with a test file? Any older version you can correctly render? Thanks! Only version 4.1 will have this problem, not version 4.0. In version 4.1, just create a new file and set the output pixel to 15000*10800 or above, and this will happen. The following is a file I tested

untitled.blend

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Thomas Dinges removed this from the 4.1 milestone 2024-04-16 10:14:27 +02:00

Jesse Yurkovich commented

2024-04-16 23:29:34 +02:00

It seems related to the use of GPU denoising, at least for me. If I use CPU denoising, it seems ok for a few frames I rendered. Does this reproduce for you if you unselect the following option:

It seems related to the use of GPU denoising, at least for me. If I use CPU denoising, it seems ok for a few frames I rendered. Does this reproduce for you if you unselect the following option: ![gpudenoise.png](/attachments/f81322de-7e18-40d3-89fa-963635a6cf2f)

gpudenoise.png

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BAI commented

2024-04-17 03:29:30 +02:00

It seems related to the use of GPU denoising, at least for me. If I use CPU denoising, it seems ok for a few frames I rendered. Does this reproduce for you if you unselect the following option:

grateful! If you remove it, you can indeed render normally.

> It seems related to the use of GPU denoising, at least for me. If I use CPU denoising, it seems ok for a few frames I rendered. Does this reproduce for you if you unselect the following option: > ![gpudenoise.png](/attachments/f81322de-7e18-40d3-89fa-963635a6cf2f) grateful! If you remove it, you can indeed render normally.

Jesse Yurkovich changed title from ~~When version 4.1 renders large-size images with pixel settings, they will appear completely black or become darker.~~ to OIDN GPU denoise: Black/broken render when using large output image sizes

2024-04-17 09:27:25 +02:00

Jesse Yurkovich added

and removed

Needs Information from User

labels 2024-04-17 09:27:36 +02:00

Jaakan-Shorter commented

2024-04-20 04:43:40 +02:00

Seems like OIDN - GPU denoising just rans out of VRAM and tried to fall back to system ram like in #102115

First rendering, at denoising stage used 32GB of ram ( I have the A750 so only 8GB of Vram and my system has 64GB of ram )
I noticed "reading full buffer from disk" before denoising finished

I dropped the samples to 1 and I had cache result and persistent data turned on
Second rendering with persistent data wants to start with more Vram than I have.

I'm running 4.1.1

4.0 and older don't have OIDN - GPU denoising just CPU

Seems like OIDN - GPU denoising just rans out of VRAM and tried to fall back to system ram like in #102115 First rendering, at denoising stage used 32GB of ram ( I have the A750 so only 8GB of Vram and my system has 64GB of ram ) I noticed "reading full buffer from disk" before denoising finished I dropped the samples to 1 and I had cache result and persistent data turned on Second rendering with persistent data wants to start with more Vram than I have. I'm running 4.1.1 4.0 and older don't have OIDN - GPU denoising just CPU

first rendering.png

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second rendering.png

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