Motion Blur renders Objects Black - But not in Viewport Preview #41115

New Issue

Frederik Steinmetz · 2014-07-18T13:41:51+02:00

2014-07-18 13:41:51 +02:00

System Information
Windows 7, GeForce560Ti

Blender Version
Broken:
2.71 two objects render as black, but not in Viewport preview.

Worked: (optional)
2.70 r2
The same two objects render as Black, but only if I turn on Motion Blur

Short description of error
There are some strange dots in my scene, one is green and belongs to the grasshopper's body and 3 to the armature. You can select the entire object if you click on the dot, but you cannot select the dot in edit/pose mode. There are no Groups in my scene.
I tried:
Flipping the normals.
There are no double Verts.
In 2.70, if I apply the Armature Modifier, it renders fine, but no motion. In 2.71 the problem persists.
If I set the shading to flat, it renders fine in all versions.MB_Bug.blend

The Blend file may be corrupted, but I don't know how, I did not download it, all was created on my computer, but I started in Blender 2.63.

Exact steps for others to reproduce the error
Press F12 (for comparison turn on Viewport Rendering)

**System Information** Windows 7, GeForce560Ti **Blender Version** Broken: 2.71 two objects render as black, but not in Viewport preview. Worked: (optional) 2.70 r2 The same two objects render as Black, but only if I turn on Motion Blur **Short description of error** There are some strange dots in my scene, one is green and belongs to the grasshopper's body and 3 to the armature. You can select the entire object if you click on the dot, but you cannot select the dot in edit/pose mode. There are no Groups in my scene. I tried: Flipping the normals. There are no double Verts. In 2.70, if I apply the Armature Modifier, it renders fine, but no motion. In 2.71 the problem persists. If I set the shading to flat, it renders fine in all versions.[MB_Bug.blend](https://archive.blender.org/developer/F98389/MB_Bug.blend) The Blend file may be corrupted, but I don't know how, I did not download it, all was created on my computer, but I started in Blender 2.63. **Exact steps for others to reproduce the error** Press F12 (for comparison turn on Viewport Rendering)

Frederik Steinmetz commented

2014-07-18 13:41:51 +02:00

Changed status to: 'Open'

Frederik Steinmetz commented

2014-07-18 13:41:51 +02:00

Added subscriber: @FrederikSteinmetz

Sergey Sharybin commented

2014-07-18 15:27:38 +02:00

Added subscriber: @Sergey

Sergey Sharybin commented

2014-07-18 15:27:38 +02:00

Motion blur is being disabled in viewport, afair. That's because it triggers scene frame update. It might be the same as #41116. need to check further. Will do it a bit later.

Sergey Sharybin self-assigned this 2014-07-18 15:27:45 +02:00

Frederik Steinmetz commented

2014-07-18 21:09:33 +02:00

I just added the Viewport remark, because in 2.71 it renders black regardless of MB or not, viewport is fine.