Regression: Geometry Nodes - Setting curve_type, nurbs_order and knots_mode through Named Attributes is broken in latest 3.2/3.3 builds #98522

New Issue

Crowe · 2022-05-31T20:42:46+02:00

Crowe commented

2022-05-31 20:42:46 +02:00

System Information
Operating system: Windows-8.1 64 Bits
Graphics card: NVIDIA GeForce GTX 1060 6GB/PCIe/SSE2 4.5.0 NVIDIA 466.47

Blender Version
Broken: 3.3.0 Alpha, commit date: 2022-05-30 17:30, branch: master, hash: ca59391704 &
3.2.0 Beta, commit date: 2022-05-29 19:19, branch: master, hash: 32bf6455a0
Worked: 3.2.0 Alpha, commit date: 2022-03-22 22:06, branch: master, hash: 5c27391b0f

Short description of error
Curves have some named attributes that don't always have dedicated nodes like "Radius" but are still available to Geometry Nodes, being visible in the Spreadsheets and everything. Some of them are: knots_mode, curve_type, nurbs_order, and nurbs_weight.

In 3.2 alpha it was possible to set them through GN (not sure about the latest version it worked). In most recent builds curve_type and knots_mode are broken. (Edit: I just found out nurbs_order is also broken)

This is the expected result of setting each one of the three attributes at a time:

Curve 1 is the original one for comparison.
Curve 2 had the nurbs_weight of control point 2 altered, included as an example of a "nodeless" named attribute that fully works.
Curve 3, knots_mode set to its original value.
Curve 4, curve_type set to its original value.

With the important note that even in 3.2 setting either curve_type or knots_mode makes them disappear from the spreadhseet, complicating debugging. Unlike them, nurbs_weight updates fine.

This is what happens in 3.3:

The bottom curves shouldn't change, just like in 3.2, because they're being set to their original values.

Exact steps for others to reproduce the error

Add a Store Named Attribute node to a NURBS curve, setting the Name to either knots_mode, curve_type, or nurbs_order and then typing the original value in Value.

**System Information** Operating system: Windows-8.1 64 Bits Graphics card: NVIDIA GeForce GTX 1060 6GB/PCIe/SSE2 4.5.0 NVIDIA 466.47 **Blender Version** Broken: 3.3.0 Alpha, commit date: 2022-05-30 17:30, branch: master, hash: ca5939170461 & 3.2.0 Beta, commit date: 2022-05-29 19:19, branch: master, hash: 32bf6455a019 Worked: 3.2.0 Alpha, commit date: 2022-03-22 22:06, branch: master, hash: 5c27391b0f8c **Short description of error** Curves have some named attributes that don't always have dedicated nodes like "Radius" but are still available to Geometry Nodes, being visible in the Spreadsheets and everything. Some of them are: `knots_mode`, `curve_type`, `nurbs_order`, and `nurbs_weight`. In 3.2 alpha it was possible to set them through GN (not sure about the latest version it worked). In most recent builds **curve_type** and **knots_mode** are broken. (*Edit*: I just found out **nurbs_order** is also broken) This is the **expected result** of setting each one of the three attributes at a time: ![bug_3.3_curveAttr_working.jpg](https://archive.blender.org/developer/F13125252/bug_3.3_curveAttr_working.jpg) Curve 1 is the original one for comparison. Curve 2 had the `nurbs_weight` of control point 2 altered, included as an example of a "nodeless" named attribute that fully works. Curve 3, `knots_mode` set to its original value. Curve 4, `curve_type` set to its original value. With the important note that even in 3.2 setting either `curve_type` or `knots_mode` makes them disappear from the spreadhseet, complicating debugging. Unlike them, `nurbs_weight` updates fine. ![bug_3.3_curveAttr_spreadsheet_missing_detail.jpg](https://archive.blender.org/developer/F13125256/bug_3.3_curveAttr_spreadsheet_missing_detail.jpg) This is what happens in 3.3: ![bug_3.3_curveAttr_broken.jpg](https://archive.blender.org/developer/F13125254/bug_3.3_curveAttr_broken.jpg) The bottom curves shouldn't change, just like in 3.2, because they're being set to their original values. **Exact steps for others to reproduce the error** 1. Add a **Store Named Attribute** node to a NURBS curve, setting the Name to either `knots_mode`, `curve_type`, or `nurbs_order` and then typing the original value in Value.

Crowe commented

2022-05-31 20:42:46 +02:00

Added subscriber: @crowe

Crowe changed title from ~~Regression: Geometry Nodes - Setting curve_type and knots_mode through Named Attributes is broken in Blender 3.3~~ to Regression: Geometry Nodes - Setting curve_type, nurbs_order and knots_mode through Named Attributes is broken in latest 3.2/3.3 builds

2022-06-01 07:05:39 +02:00

Philipp Oeser commented

2022-06-01 09:09:29 +02:00

Added subscriber: @lichtwerk

Philipp Oeser commented

2022-06-01 09:09:29 +02:00

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

Philipp Oeser commented

2022-06-01 09:09:29 +02:00

I can see that the behavior changed, but was setting those attributes actually working? (as in: setting it to a different value than the original? seems like this was also not working prior...)
Will bisect when this changed, maybe this gives us a hint already

I can see that the behavior changed, but was setting those attributes actually working? (as in: setting it to a different value than the original? seems like this was also not working prior...) Will bisect when this changed, maybe this gives us a hint already

Philipp Oeser commented

2022-06-01 09:12:42 +02:00

Changed status from 'Confirmed' to: 'Needs User Info'

Philipp Oeser commented

2022-06-01 09:12:42 +02:00

Sorry, meant to put this on Needs Information from User because of

In #98522#1367421, @lichtwerk wrote:
was setting those attributes actually working? (as in: setting it to a different value than the original? seems like this was also not working prior...)

can you provide your example .blend file where this was working in 5c27391b0f?

Sorry, meant to put this on `Needs Information from User` because of > In #98522#1367421, @lichtwerk wrote: > was setting those attributes actually working? (as in: setting it to a different value than the original? seems like this was also not working prior...) can you provide your example .blend file where this was working in 5c27391b0f?

Hans Goudey commented

2022-06-01 10:41:09 +02:00

Added subscriber: @HooglyBoogly

Hans Goudey commented

2022-06-01 10:41:09 +02:00

Thanks for the report. Unfortunately this isn't really expected to work at this point. I'll close this in favor of a TODO task.

Hans Goudey commented

2022-06-01 10:42:09 +02:00

Closed as duplicate of #98533

Hans Goudey closed this issue

2022-06-01 10:42:09 +02:00

Sign in to join this conversation.

No Label

Download

What's New

Blender Studio

Manual

Developers Blog

Documentation

Benchmark

Blender Conference

Development Fund

One-time Donations

Regression: Geometry Nodes - Setting curve_type, nurbs_order and knots_mode through Named Attributes is broken in latest 3.2/3.3 builds #98522