Fileoutput Node does not export Z-Depth in 'singlepass' EXR from Compositor #107265

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opened 2023-04-23 12:51:35 +02:00 by NIklas Schneider · 5 comments

NIklas Schneider commented

2023-04-23 12:51:35 +02:00

System Information
Operating system: WIndows
Graphics card: 1070gtx

Blender Version
Blender 3.6.0 Alpha

Short description of error
Hi! Since the support of z-depth is especially mentioned for 'single' EXR in the documentation of the compositor fileoutput node, I report this as a bug.
https://docs.blender.org/manual/en/latest/compositing/types/output/file.html

Exact steps for others to reproduce the error

If you export an exr with the fileoutput node, with z-depth option checked from compositor, the depth
gets not exported. Probably because there is no input socket on the fileoutput node when 'single exr' is used. I think it would make the nodetree clearer if you dont have to embed the depth pass seperately for each file, and multexr makes the filesizes unessecary big.

All the best!

**System Information** Operating system: WIndows Graphics card: 1070gtx **Blender Version** Blender 3.6.0 Alpha **Short description of error** Hi! Since the support of z-depth is especially mentioned for 'single' EXR in the documentation of the compositor fileoutput node, I report this as a bug. https://docs.blender.org/manual/en/latest/compositing/types/output/file.html **Exact steps for others to reproduce the error** If you export an exr with the fileoutput node, with z-depth option checked from compositor, the depth gets not exported. Probably because there is no input socket on the fileoutput node when 'single exr' is used. I think it would make the nodetree clearer if you dont have to embed the depth pass seperately for each file, and multexr makes the filesizes unessecary big. All the best!

NIklas Schneider added the

labels 2023-04-23 12:51:36 +02:00

Iliya Katushenock added the

Nodes & Physics

labels 2023-04-23 12:56:10 +02:00

Pratik Borhade commented

2023-04-24 13:51:47 +02:00

Member

Hi, thanks for the report. I can confirm

Hi, thanks for the report. I can confirm

Pratik Borhade added

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labels 2023-04-24 13:51:57 +02:00

Iliya Katushenock added the

EEVEE & Viewport

label 2023-04-24 15:11:33 +02:00

Habib Gahbiche commented

2023-05-18 20:16:29 +02:00

Member

Thanks for reporting @Ctcnick

I was looking into fixing this but I am not sure how the solution should look like. There is no way for the output file node to know where to get the z-information from. The compositor node gets this information from a Z input socket.

I see following options how to fix this:

Remove "Z Buffer" option for file output node. It remains of course possible to save depth information either by manually creating an input socket for file output node, or by going through image viewer -> image -> save image and checking Z Buffer
Add a "Z" input socket to output file node (e.g. when "Z buffer" is selected).

I simply prefer option 1. @Jeroen-Bakker any opinion on this?

Thanks for reporting @Ctcnick I was looking into fixing this but I am not sure how the solution should look like. There is no way for the output file node to know where to get the z-information from. The compositor node gets this information from a Z input socket. I see following options how to fix this: 1. Remove "Z Buffer" option for file output node. It remains of course possible to save depth information either by manually creating an input socket for file output node, or by going through `image viewer -> image -> save image` and checking `Z Buffer` 2. Add a "Z" input socket to output file node (e.g. when "Z buffer" is selected). I simply prefer option 1. @Jeroen-Bakker any opinion on this?

Jeroen Bakker commented

2023-05-22 08:12:42 +02:00

Member

I would consider it to be an error in the documentation as well. I would remove the "Z Buffer" option in this case. Think it was never supported, but the documentation was copied from the render output part.

Also make sure that the manual change is also done.

I would consider it to be an error in the documentation as well. I would remove the "Z Buffer" option in this case. Think it was never supported, but the documentation was copied from the render output part. Also make sure that the manual change is also done.

Jeroen Bakker added this to the Compositing project 2023-05-22 08:13:01 +02:00

Jeroen Bakker removed the

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Nodes & Physics

labels 2023-05-22 08:13:32 +02:00

NIklas Schneider commented

2023-05-22 14:21:33 +02:00

Author

@zazizizou @Jeroen-Bakker
The most consequent way would be option nr2: to add a z-input socket when Zbuffer is checked,
because then you get the same output you would save from the render output. And: the Image Output Node offers Image, Alpha and Depth for single-exr, so it is somewhat misleading when the channel is there, but is empty.

On the other hand, I compared multi and single exr filsizes, it is not that much difference as long as you dont create an extra Alpha channel. Alpha channel cannot be accessed directly from the multi-exr node. But you can use the split color node and get the alpha from there. So you dont need the extra channel but an extra node for each layer.

Thanks all for your attentions! :)

@zazizizou @Jeroen-Bakker The most consequent way would be option nr2: to add a z-input socket when Zbuffer is checked, because then you get the same output you would save from the render output. And: the Image Output Node offers Image, Alpha and Depth for single-exr, so it is somewhat misleading when the channel is there, but is empty. On the other hand, I compared multi and single exr filsizes, it is not that much difference as long as you dont create an extra Alpha channel. Alpha channel cannot be accessed directly from the multi-exr node. But you can use the split color node and get the alpha from there. So you dont need the extra channel but an extra node for each layer. Thanks all for your attentions! :)

Habib Gahbiche self-assigned this 2023-05-28 03:54:51 +02:00

Habib Gahbiche referenced a pull request that will close this issue

2023-05-28 08:58:05 +02:00

Fix #107265 Compositor: Fileoutput Node does not export Z-Depth in 'singlepass' EXR #108365

Habib Gahbiche referenced a pull request that will close this issue

2023-05-29 10:40:42 +02:00

Fix #107265 Compositor: Fileoutput Node does not export Z-Depth in 'singlepass' EXR #108387

Habib Gahbiche referenced this issue from a commit

2023-06-08 08:14:21 +02:00

Fix #107265 Compositor: Fileoutput Node does not export Z-Depth in 'singlepass' EXR

Habib Gahbiche closed this issue

2023-06-08 08:14:24 +02:00

Blender Bot added

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labels 2023-06-08 08:14:26 +02:00

NIklas Schneider commented

2023-06-08 09:00:21 +02:00

Author

@zazizizou: Thank you for your work on this!

@zazizizou: Thank you for your work on this!

Sergey Sharybin removed this from the Compositing project 2023-07-06 14:25:31 +02:00

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