Vector pass disabled when renderes motion blur is turned on #48908

New Issue

Mateusz Mielnicki · 2016-07-20T16:34:46+02:00

Mateusz Mielnicki commented

2016-07-20 16:34:46 +02:00

System Information
Windows 7 64bit
gtx 980

Blender Version
Broken: since cycles has motion blur

Short description of error
Vector pass is empty in render layer. there is no visual warning that pass will be blank when using motion blur. Also i find that sometimes i want one render layer to render motion bur while second to heve vector pass, could we make it working in both ways?

Exact steps for others to reproduce the error
Render vector pass with physical motion blur on... vector pass will be empty

**System Information** Windows 7 64bit gtx 980 **Blender Version** Broken: since cycles has motion blur **Short description of error** Vector pass is empty in render layer. there is no visual warning that pass will be blank when using motion blur. Also i find that sometimes i want one render layer to render motion bur while second to heve vector pass, could we make it working in both ways? **Exact steps for others to reproduce the error** Render vector pass with physical motion blur on... vector pass will be empty

Mateusz Mielnicki commented

2016-07-20 16:34:46 +02:00

Changed status to: 'Open'

Mateusz Mielnicki commented

2016-07-20 16:34:46 +02:00

Added subscriber: @MateuszMielnicki

Brecht Van Lommel commented

2016-07-21 00:12:04 +02:00

Added subscriber: @brecht

Brecht Van Lommel commented

2016-07-21 00:12:04 +02:00

Changed status from 'Open' to: 'Archived'

Brecht Van Lommel closed this issue

2016-07-21 00:12:04 +02:00

Brecht Van Lommel self-assigned this 2016-07-21 00:12:04 +02:00

Brecht Van Lommel commented

2016-07-21 00:12:04 +02:00

This is by design at the moment, not considered a bug.

In case we add support for this in the future, could you explain what you would use this for? Do you want to apply extra motion blur to already motion blurred objects? It might not work very well.

This is by design at the moment, not considered a bug. In case we add support for this in the future, could you explain what you would use this for? Do you want to apply extra motion blur to already motion blurred objects? It might not work very well.

Mateusz Mielnicki commented

2016-07-21 00:21:12 +02:00

The reason is deformation motion blur on fury character which i found extremely slow. I want to have it disabled on mesh with hairs. So characters will render fast without moblur whih i wil add in fusion. And enviro already has moblur in reflection etc... it works as i can do it on separate scenes.

If this behaviour is by design then ok. But it took me 5 hours to find why vector pass in one of my files is empty.
So when motion blur is enabled then vector pass should be not available to chose/check. At least a warning indicator like with experimental features has.

Thats ui bug then...

The reason is deformation motion blur on fury character which i found extremely slow. I want to have it disabled on mesh with hairs. So characters will render fast without moblur whih i wil add in fusion. And enviro already has moblur in reflection etc... it works as i can do it on separate scenes. If this behaviour is by design then ok. But it took me 5 hours to find why vector pass in one of my files is empty. So when motion blur is enabled then vector pass should be not available to chose/check. At least a warning indicator like with experimental features has. Thats ui bug then...

Mateusz Mielnicki commented

2016-07-21 00:27:50 +02:00

I forgot to add that objects with deformation motion blur disabled i keep on separate layer with alpha so they do not have double motion blur in compositor...

blender-admin commented

2016-07-21 01:02:21 +02:00

This issue was referenced by blender/cycles@f3d96574ac

This issue was referenced by blender/cycles@f3d96574acf6f8b06e36fc6d43a8fcf3dad657b7

blender-admin commented

2016-07-21 01:02:21 +02:00

This issue was referenced by 97ef8777fc

This issue was referenced by 97ef8777fcd2228e1787d79572b5491387a3eeee

Brecht Van Lommel commented

2016-07-21 01:04:08 +02:00

Changed status from 'Archived' to: 'Resolved'

Brecht Van Lommel commented

2016-07-21 01:04:38 +02:00

Ok, the vector pass is grayed out in the UI now.

So what we should ideally fix is the slow deformation motion with hair..

Ok, the vector pass is grayed out in the UI now. So what we should ideally fix is the slow deformation motion with hair..

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Vector pass disabled when renderes motion blur is turned on #48908