NodeGroup input doesn't work when unconnected in Eevee renderer. (Also Cycles to a degree) #54906

Closed
opened 2018-05-01 08:45:20 +02:00 by Doriphor · 12 comments

System Information
Windows 10 Home 64, with NVIDIA GeForce 940MX

Blender Version
Broken: 2.8 c21ceb3 (win64-vc14) and 5dab34d (win64-vc14)

Description
Like it says in the title when a NodeGroup has an unconnected socket, the textbox/slider/color selector for that socket won't work in Eevee renderer.

Exact steps for others to reproduce the error
In a new file (default cube):

  • Assign a new material to the default cube.

  • Set shading to "Rendered".

  • Switch to Node Editor (this is easier to notice if the window is split to keep a 3D View open.)

  • Select Principled BSDF in Node Editor, and group it (Ctrl-G). This is simply an example, but from my experience, this happens with every NodeGroup.

  • The values assigned in the textboxes, sliders and color boxes of the NodeGroup won't have any effect on the rendering anymore.

  • If a Value Node or RGB Node is connected to them, and then used to change the parameter, everything works fine, but as soon as they're disconnected, it stops working again.

  • This happens in Eevee renderer, but a very similar issue happens in Cycles, where the renderer won't update material parameters until the user switches to another renderer, and back to Cycles. In this case, the NodeGroup inputs work, but only after switching renderer.

**System Information** Windows 10 Home 64, with NVIDIA GeForce 940MX **Blender Version** Broken: 2.8 c21ceb3 (win64-vc14) and 5dab34d (win64-vc14) **Description** Like it says in the title when a NodeGroup has an unconnected socket, the textbox/slider/color selector for that socket won't work in Eevee renderer. **Exact steps for others to reproduce the error** In a new file (default cube): - Assign a new material to the default cube. - Set shading to "Rendered". - Switch to Node Editor (this is easier to notice if the window is split to keep a 3D View open.) - Select Principled BSDF in Node Editor, and group it (Ctrl-G). This is simply an example, but from my experience, this happens with every NodeGroup. - The values assigned in the textboxes, sliders and color boxes of the NodeGroup won't have any effect on the rendering anymore. - If a Value Node or RGB Node is connected to them, and then used to change the parameter, everything works fine, but as soon as they're disconnected, it stops working again. - This happens in Eevee renderer, but a very similar issue happens in Cycles, where the renderer won't update material parameters until the user switches to another renderer, and back to Cycles. In this case, the NodeGroup inputs work, but only after switching renderer.
Author

Added subscriber: @doriphor

Added subscriber: @doriphor
Member

Added subscribers: @fclem, @Sergey, @lichtwerk

Added subscribers: @fclem, @Sergey, @lichtwerk
Member

Changed status from 'Open' to: 'Archived'

Changed status from 'Open' to: 'Archived'
Philipp Oeser self-assigned this 2018-05-02 12:14:47 +02:00
Member

I can confirm the described behaviour.
However 2.8 is still WIP in many areas.

Raising awareness with @Sergey and @fclem (but I am pretty sure this is a known issue atm.)

Have to archive this due to our tracker policy on 2.8:

Thank you for the report. Currently we are aware of many issues in 2.8 and actively working to fix them. But since replying to reports takes time, we have decided to limit bug reports to module team members.

I can confirm the described behaviour. However 2.8 is still WIP in many areas. Raising awareness with @Sergey and @fclem (but I am pretty sure this is a known issue atm.) Have to archive this due to our tracker policy on 2.8: > Thank you for the report. Currently we are aware of many issues in 2.8 and actively working to fix them. But since replying to reports takes time, we have decided to limit bug reports to [module team ](https://wiki.blender.org/index.php/Dev:Doc/Process/Module_Owners/List) members.
Author

Thank you! I tried looking for this issue everywhere and couldn't find anything. I won't report any more 2.8 issues for now then!

Olivier

Thank you! I tried looking for this issue everywhere and couldn't find anything. I won't report any more 2.8 issues for now then! Olivier

Added subscriber: @AdamPreisler

Added subscriber: @AdamPreisler

Changed status from 'Archived' to: 'Open'

Changed status from 'Archived' to: 'Open'

Reopening this to raise awareness after 5 months as many many materials rely on NodeGroups with inputs.

I was not just trying it with 2.79b imported Nodes but also with 2.8 fresh nodes and it still persists.

Here's a GIF showing exactly what the problem is:
NodegroupInputsDontRegisterUnlessPluggedInto.gif

Reopening this to raise awareness after 5 months as many many materials rely on NodeGroups with inputs. I was not just trying it with 2.79b imported Nodes but also with 2.8 fresh nodes and it still persists. Here's a GIF showing exactly what the problem is: ![NodegroupInputsDontRegisterUnlessPluggedInto.gif](https://archive.blender.org/developer/F5042006/NodegroupInputsDontRegisterUnlessPluggedInto.gif)
Member

Added subscriber: @LazyDodo

Added subscriber: @LazyDodo
Member

Changed status from 'Open' to: 'Archived'

Changed status from 'Open' to: 'Archived'
Member

Please don't re-open tickets, especially if they are not yours to begin with.

Please don't re-open tickets, especially if they are not yours to begin with.

I don't recall reading there is a rule not to reopen tasks from others when they are still valid.

Sorry about that,

will create a new ticket then.

I don't recall reading there is a rule not to reopen tasks from others when they are still valid. Sorry about that, will create a new ticket then.
Sign in to join this conversation.
No Label
Interest
Alembic
Interest
Animation & Rigging
Interest
Asset Browser
Interest
Asset Browser Project Overview
Interest
Audio
Interest
Automated Testing
Interest
Blender Asset Bundle
Interest
BlendFile
Interest
Collada
Interest
Compatibility
Interest
Compositing
Interest
Core
Interest
Cycles
Interest
Dependency Graph
Interest
Development Management
Interest
EEVEE
Interest
EEVEE & Viewport
Interest
Freestyle
Interest
Geometry Nodes
Interest
Grease Pencil
Interest
ID Management
Interest
Images & Movies
Interest
Import Export
Interest
Line Art
Interest
Masking
Interest
Metal
Interest
Modeling
Interest
Modifiers
Interest
Motion Tracking
Interest
Nodes & Physics
Interest
OpenGL
Interest
Overlay
Interest
Overrides
Interest
Performance
Interest
Physics
Interest
Pipeline, Assets & IO
Interest
Platforms, Builds & Tests
Interest
Python API
Interest
Render & Cycles
Interest
Render Pipeline
Interest
Sculpt, Paint & Texture
Interest
Text Editor
Interest
Translations
Interest
Triaging
Interest
Undo
Interest
USD
Interest
User Interface
Interest
UV Editing
Interest
VFX & Video
Interest
Video Sequencer
Interest
Virtual Reality
Interest
Vulkan
Interest
Wayland
Interest
Workbench
Interest: X11
Legacy
Blender 2.8 Project
Legacy
Milestone 1: Basic, Local Asset Browser
Legacy
OpenGL Error
Meta
Good First Issue
Meta
Papercut
Meta
Retrospective
Meta
Security
Module
Animation & Rigging
Module
Core
Module
Development Management
Module
EEVEE & Viewport
Module
Grease Pencil
Module
Modeling
Module
Nodes & Physics
Module
Pipeline, Assets & IO
Module
Platforms, Builds & Tests
Module
Python API
Module
Render & Cycles
Module
Sculpt, Paint & Texture
Module
Triaging
Module
User Interface
Module
VFX & Video
Platform
FreeBSD
Platform
Linux
Platform
macOS
Platform
Windows
Priority
High
Priority
Low
Priority
Normal
Priority
Unbreak Now!
Status
Archived
Status
Confirmed
Status
Duplicate
Status
Needs Info from Developers
Status
Needs Information from User
Status
Needs Triage
Status
Resolved
Type
Bug
Type
Design
Type
Known Issue
Type
Patch
Type
Report
Type
To Do
No Milestone
No project
No Assignees
4 Participants
Notifications
Due Date
The due date is invalid or out of range. Please use the format 'yyyy-mm-dd'.

No due date set.

Dependencies

No dependencies set.

Reference: blender/blender#54906
No description provided.