Black boxes on a denoising render when using a .exr image as a environmental texture #51529

New Issue

bigbad · 2017-05-17T10:23:26+02:00

bigbad commented

2017-05-17 10:23:26 +02:00

System Information
OS: Windows 10
GPU: AMD 390X 8gb, latest drivers
CPU+RAM: i7-5820k, 32gb Ram

Blender Version
2.78 12651ab

I'm using the benchmark file from Gooseberry and when default rendering with denoise on the black boxes appear at random when denoise kicks in. But it only appears when rendering with '.exr' file as environmental texture. If I convert the same file to '.hdr' file then the boxes are gone. No visual difference noted except for the black boxes.

**System Information** OS: Windows 10 GPU: AMD 390X 8gb, latest drivers CPU+RAM: i7-5820k, 32gb Ram **Blender Version** 2.78 12651ab I'm using the benchmark file from Gooseberry and when default rendering with denoise on the black boxes appear at random when denoise kicks in. But it only appears when rendering with '.exr' file as environmental texture. If I convert the same file to '.hdr' file then the boxes are gone. No visual difference noted except for the black boxes. ![gpu-black-blocks.jpg](https://archive.blender.org/developer/F600666/gpu-black-blocks.jpg)

bigbad commented

2017-05-17 10:23:26 +02:00

Changed status to: 'Open'

bigbad commented

2017-05-17 10:23:26 +02:00

Added subscriber: @bigbad

Steffen Dünner commented

2017-05-17 10:54:55 +02:00

Added subscriber: @SteffenD

Steffen Dünner commented

2017-05-17 10:54:55 +02:00

This EXR coming with this scene is known to contain NaNs. Saving it to HDR format "fixes" this. But even saving it as a new EXR (I tried 16bit half-float with ZIPS compression) got rid of the black boxes.
If you load the original environment EXR into Natron it displays a yellow warning that it replaced some NaNs with white.

This EXR coming with this scene is known to contain NaNs. Saving it to HDR format "fixes" this. But even saving it as a new EXR (I tried 16bit half-float with ZIPS compression) got rid of the black boxes. If you load the original environment EXR into Natron it displays a yellow warning that it replaced some NaNs with white.

Sergey Sharybin commented

2017-05-17 14:30:15 +02:00

Added subscribers: @LukasStockner, @brecht, @Sergey

Sergey Sharybin self-assigned this 2017-05-17 14:30:15 +02:00

Sergey Sharybin commented

2017-05-17 14:30:15 +02:00

This is similar to bug i've fixed in 581c819. Guess we need to move finiste check to image.cpp.

@LukasStockner , @brecht, any objections on that?

This is similar to bug i've fixed in 581c819. Guess we need to move finiste check to image.cpp. @LukasStockner , @brecht, any objections on that?

Lukas Stockner commented

2017-05-17 14:48:00 +02:00

Sounds fine if it doesn't cause a significant slowdown.
Releasing a fixed version of the scene would probably also be a good idea, this is the third "bug" caused by that HDR.

Sounds fine if it doesn't cause a significant slowdown. Releasing a fixed version of the scene would probably also be a good idea, this is the third "bug" caused by that HDR.

blender-admin commented

2017-05-17 15:29:47 +02:00

This issue was referenced by blender/cycles@081d59035b

This issue was referenced by blender/cycles@081d59035bfc42162f3bca32021ab007ef8e4b62

blender-admin commented

2017-05-17 15:29:47 +02:00

This issue was referenced by 1d49205b1a

This issue was referenced by 1d49205b1a1d39bdc47ac85ce8ec70a773a1a7e0

Sergey Sharybin commented

2017-05-17 15:31:05 +02:00

Changed status from 'Open' to: 'Resolved'

Sergey Sharybin closed this issue

2017-05-17 15:31:05 +02:00

Brecht Van Lommel commented

2017-05-20 17:07:27 +02:00

I'm not sure if we should release a fixed scene, testing if we handle weird HDR images correct is also valuable since users will likely encounter the as well.

mathieu menuet commented

2017-05-21 15:07:24 +02:00

Added subscriber: @bliblubli

mathieu menuet commented

2017-05-21 15:07:24 +02:00

@brecht and @Sergey wouldn't it be better and possible to take last valid texel value instead of 0,0,0 for replacing NaNs while cycling through all the texels of the texture?

Sign in to join this conversation.

No Label

Download

What's New

Blender Studio

Manual

Developers Blog

Documentation

Benchmark

Blender Conference

Development Fund

One-time Donations

Black boxes on a denoising render when using a .exr image as a environmental texture #51529