Compositing artifacts with a group nodes setup. #38011

New Issue

tuqueque tuquequin · 2014-01-01T09:40:30+01:00

2014-01-01 09:40:30 +01:00

- Operating System, Graphics card ---

O.S.: Windows 7, 64-bit (SP1)
Processor: Intel Q9550, memory: 8GB DDR3
Graphic Card: Nvidia Geforce 550 Ti (2x in SLI)
Nvidia graphics driver version: 331.93

- Blender version with error, and version that worked ---

blender-2.69-19103b4-win64 (downloaded from builder.blender.org)

- Short description of error ---

A fairly simple node setup I use for "postpro" in most of my renders, is giving problems and artifacts in some random renders/frames... (I'm just experimenting this problem since a couple of months).

Attached is a 10MB 7-zip (link, 'cause of Phabricator limitations) with an example scene (is a little heavy, ~26MB, but it shows a lot the problems I describe)... There's also a video file with a sequence rendered showing the random black squares in the top corners and some random frames getting messed up with the "Lens Distortion" parameter/node.

http://www.mediafire.com/download/5f1fy83cplm2hn7/CompoBug.7z

P.S.: Thanks and happy new year, :)

- Operating System, Graphics card --- O.S.: Windows 7, 64-bit (SP1) Processor: Intel Q9550, memory: 8GB DDR3 Graphic Card: Nvidia Geforce 550 Ti (2x in SLI) Nvidia graphics driver version: 331.93 - Blender version with error, and version that worked --- blender-2.69-19103b4-win64 (downloaded from builder.blender.org) - Short description of error --- A fairly simple node setup I use for "postpro" in most of my renders, is giving problems and artifacts in some random renders/frames... (I'm just experimenting this problem since a couple of months). Attached is a 10MB 7-zip (link, 'cause of Phabricator limitations) with an example scene (is a little heavy, ~26MB, but it shows a lot the problems I describe)... There's also a video file with a sequence rendered showing the random black squares in the top corners and some random frames getting messed up with the "Lens Distortion" parameter/node. http://www.mediafire.com/download/5f1fy83cplm2hn7/CompoBug.7z P.S.: Thanks and happy new year, :)

tuqueque tuquequin commented

2014-01-01 09:40:30 +01:00

Changed status to: 'Open'

tuqueque tuquequin commented

2014-01-01 09:40:30 +01:00

Added subscriber: @tuqueque

Lukas Tönne self-assigned this 2014-01-02 10:12:42 +01:00

Lukas Tönne commented

2014-01-02 10:12:42 +01:00

This seems to be related to the way the distort node reads values for the distort/dispersion inputs in combination with the Glare node.

I have reduced this file to a point where the bug(s) still show up but can be tested quicker, using an image input node instead of render layers (just touch one of the links to trigger recomposite):
CompoBug6.blend

The black corners show up every time (composite "hangs" on 100% for a few seconds before finishing and showing errors, this seems to be from the glare node).

As soon as you disconnect both the Distort and Dispersion inputs of the Distort node the bug does not show up
Likewise if you remove either the Glare node or the Distort node (passing through the input image directly), the bug will not show up - somehow the combination of both does not work.

This seems to be related to the way the distort node reads values for the distort/dispersion inputs in combination with the Glare node. I have reduced this file to a point where the bug(s) still show up but can be tested quicker, using an image input node instead of render layers (just touch one of the links to trigger recomposite): [CompoBug6.blend](https://archive.blender.org/developer/F60344/CompoBug6.blend) The black corners show up every time (composite "hangs" on 100% for a few seconds before finishing and showing errors, this seems to be from the glare node). * As soon as you disconnect both the Distort and Dispersion inputs of the Distort node the bug does not show up * Likewise if you remove either the Glare node or the Distort node (passing through the input image directly), the bug will not show up - somehow the combination of both does not work.

Lukas Tönne commented

2014-01-02 10:27:33 +01:00

Added subscriber: @Jeroen-Bakker