Regression: Brushes in Sculpt, Weight, Vertex modes with Projected Falloff aren't consisent while in orthographic camera snapped to 90 axis #109555

New Issue

Jaromir · 2023-06-30T14:16:25+02:00

Jaromir commented

2023-06-30 14:16:25 +02:00

System Information
Operating system: Windows-10-10.0.22621-SP0 64 Bits
Graphics card: NVIDIA GeForce RTX 3080/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 531.79

Blender Version
Broken: version: 3.6.0, branch: blender-v3.6-release, commit date: 2023-06-27 08:08, hash: c7fc78b81ecb
Worked: 3.4 (newest version of Blender that worked as expected)

Caused by 7f256e0d33

Short description of error
I found the issue in 3.5, 3.6 and 4.0 on defaults startups.
Brushes in sculpt, weight paint and vertex modes aren't working consistently when are set to Projected Falloff, and while orhographic camera snapped to 90 degree axis eg. by pressing numpad 1, numpad 3 etc.

When geometry is small, there seems to be some kind of worldspace sized bounding box deadzone around mesh in which brushes don't work. There's no issue when geometry is big enough, because some second geometry bounding box is larger than this worldspace sized one. This is weird, but I couldn't make more sense out of it, so there's a video showcasing the issue.

Just to note, brushes do work as expected in any other angles in both orthographic and perspective modes.

Exact steps for others to reproduce the error

Make default cube smaller, either by object mode or edit mode
In sculpt mode, pick any brush (Grab is best for testing) and change Falloff to Projected
Enter orthographic mode in front/side/top view
Try to move vertices using grab brush.
If it still works, try make cube even smaller and try again.
At some point, brush doesn't work in somekind of inflated boundingbox. It works past it and inside expected real geometry bounding box.

**System Information** Operating system: Windows-10-10.0.22621-SP0 64 Bits Graphics card: NVIDIA GeForce RTX 3080/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 531.79 **Blender Version** Broken: version: 3.6.0, branch: blender-v3.6-release, commit date: 2023-06-27 08:08, hash: `c7fc78b81ecb` Worked: 3.4 (newest version of Blender that worked as expected) Caused by 7f256e0d33dd545c6527828a05aef61beb30d8ab **Short description of error** I found the issue in 3.5, 3.6 and 4.0 on defaults startups. Brushes in sculpt, weight paint and vertex modes aren't working consistently when are set to Projected Falloff, and while orhographic camera snapped to 90 degree axis eg. by pressing numpad 1, numpad 3 etc. When geometry is small, there seems to be some kind of worldspace sized bounding box deadzone around mesh in which brushes don't work. There's no issue when geometry is big enough, because some second geometry bounding box is larger than this worldspace sized one. This is weird, but I couldn't make more sense out of it, so there's a video showcasing the issue. Just to note, brushes do work as expected in any other angles in both orthographic and perspective modes. **Exact steps for others to reproduce the error** 1. Make default cube smaller, either by object mode or edit mode 2. In sculpt mode, pick any brush (Grab is best for testing) and change Falloff to Projected 3. Enter orthographic mode in front/side/top view 4. Try to move vertices using grab brush. 5. If it still works, try make cube even smaller and try again. 6. At some point, brush doesn't work in somekind of inflated boundingbox. It works past it and inside expected real geometry bounding box.

projected brushes in 90 ortho.mp4

26 MiB

Jaromir added the

labels 2023-06-30 14:16:26 +02:00

Philipp Oeser commented

2023-07-03 11:28:21 +02:00

Can confirm, will check

Philipp Oeser added

and removed

labels 2023-07-03 11:28:29 +02:00

Philipp Oeser commented

2023-07-03 11:50:52 +02:00

Caused by 7f256e0d33

CC @JosephEagar

Caused by 7f256e0d33dd545c6527828a05aef61beb30d8ab CC @JosephEagar

Philipp Oeser added

Module

Sculpt, Paint & Texture

and removed

labels 2023-07-03 11:51:22 +02:00

Joseph Eagar referenced this issue from a commit

2023-07-04 07:28:29 +02:00

Sculpt: Fix #109555: Small object scales break sculpt

Joseph Eagar closed this issue

2023-07-04 07:28:30 +02:00

Blender Bot added

and removed

labels 2023-07-04 07:28:32 +02:00

Philipp Oeser commented

2023-07-04 09:42:25 +02:00

Not fixed, try the file below, still not working

109555.blend

902 KiB

Philipp Oeser reopened this issue

2023-07-04 09:42:27 +02:00

Blender Bot added

and removed

labels 2023-07-04 09:42:30 +02:00

Julien Kaspar added

and removed

labels 2023-07-04 10:05:04 +02:00

Julien Kaspar added

and removed

labels 2023-07-04 10:13:47 +02:00

Joseph Eagar referenced this issue from a commit

2023-07-06 19:21:56 +02:00

Sculpt: Second attempt at fix #109555: Fix floating-point error.

Joseph Eagar closed this issue

2023-07-06 19:21:57 +02:00

Blender Bot added

and removed

labels 2023-07-06 19:21:59 +02:00

Philipp Oeser commented

2023-07-07 09:38:42 +02:00

Em, nope, this now works wrong as well, you now have full influence if you start your stroke here

(same file as above)

Em, nope, this now works wrong as well, you now have full influence if you start your stroke here ![image](/attachments/68e1053d-3222-4cfb-ba21-30db54bf5e76) (same file as above)

image.png

198 KiB

Philipp Oeser reopened this issue

2023-07-07 09:38:44 +02:00

Blender Bot added

and removed

labels 2023-07-07 09:39:14 +02:00

Joseph Eagar referenced this issue from a commit