Buffering of nodeGroups is not working correctly #72939

New Issue

Reza Saberi Rad · 2020-01-06T21:43:30+01:00

Reza Saberi Rad commented

2020-01-06 21:43:30 +01:00

System Information
Operating system: Fedora 31 (5.3.16-300.fc31.x86_64)
Graphics card: Intel Corporation UHD Graphics 620 (rev 07)
NVIDIA Corporation GP108M [GeForce MX150] (rev a1)

Blender Version
Broken: 2.81
Worked: (optional)

Short description of error
In compositing mode, when connecting output of a Value node to Y input of Translate node, every thing works as expected.
But when putting the Value node to a group and enables the Buffer Groups, connecting the output of group (which is output of Value node inside it) to Y input of Translate node does not works as expected!

Exact steps for others to reproduce the error
Open:
problem.blend

F12 to update.
Note that the Buffer Groups option is enabled (SideBar).
Note that by disabling this option and updating the tree, node group will work again.

**System Information** Operating system: Fedora 31 (5.3.16-300.fc31.x86_64) Graphics card: Intel Corporation UHD Graphics 620 (rev 07) NVIDIA Corporation GP108M [GeForce MX150] (rev a1) **Blender Version** Broken: 2.81 Worked: (optional) **Short description of error** In compositing mode, when connecting output of a Value node to Y input of Translate node, every thing works as expected. But when putting the Value node to a group and enables the `Buffer Groups`, connecting the output of group (which is output of Value node inside it) to Y input of Translate node does not works as expected! **Exact steps for others to reproduce the error** Open: [problem.blend](https://archive.blender.org/developer/F8263227/problem.blend) * F12 to update. * Note that the `Buffer Groups` option is enabled (SideBar). * Note that by disabling this option and updating the tree, node group will work again.

Reza Saberi Rad commented

2020-01-06 21:43:30 +01:00

Added subscriber: @RezaSR

Germano Cavalcante commented

2020-01-07 19:13:07 +01:00

Changed status from 'Needs Triage' to: 'Confirmed'

Reza Saberi Rad commented

2020-01-07 19:49:15 +01:00

I created almost the same setup in a new blend file, and everything works as expected. It seems there should be something to do with this file itself!

Germano Cavalcante commented

2020-01-07 20:25:04 +01:00

Added subscriber: @mano-wii

Germano Cavalcante commented

2020-01-07 20:25:04 +01:00

On further investigation, this is a problem with Buffer Groups:
https://docs.blender.org/manual/en/latest/compositing/properties.html#performance

It seems that the node group buffer in the example is created but not written.

On further investigation, this is a problem with `Buffer Groups`: https://docs.blender.org/manual/en/latest/compositing/properties.html#performance It seems that the node group buffer in the example is created but not written.

Germano Cavalcante changed title from ~~Integer output of nodeGroup is not working correctly~~ to Buffering of nodeGroups is not working correctly

2020-01-07 20:30:29 +01:00

Reza Saberi Rad commented

2020-01-07 20:39:50 +01:00

In #72939#843590, @mano-wii wrote:
On further investigation, this is a problem with Buffer Groups:
https://docs.blender.org/manual/en/latest/compositing/properties.html#performance

It seems that the node group buffer in the example is created but not written.

Aha, yeas. Thanks for your help.

> In #72939#843590, @mano-wii wrote: > On further investigation, this is a problem with `Buffer Groups`: > https://docs.blender.org/manual/en/latest/compositing/properties.html#performance > > It seems that the node group buffer in the example is created but not written. Aha, yeas. Thanks for your help.

Philipp Oeser removed the

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Buffering of nodeGroups is not working correctly #72939