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Texture Mapping issues on large brush radius #110921

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opened 2023-08-08 12:36:10 +02:00 by Julien Kaspar · 3 comments
Julien Kaspar commented 2023-08-08 12:36:10 +02:00
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System Information
Operating system: Linux-6.4.6-gentoo-x86_64-AMD_Ryzen_Threadripper_1950X_16-Core_Processor-with-glibc2.37 64 Bits, X11 UI
Graphics card: AMD Radeon RX 7900 XT (gfx1100, LLVM 15.0.7, DRM 3.52, 6.4.6-gentoo) AMD 4.6 (Core Profile) Mesa 23.3.0-devel (git-50c29e1ffa)

Blender Version
Broken: version: 4.0.0 Alpha, branch: main, commit date: 2023-08-07 21:02, hash: ecb3262bf049
Worked: --

Short description of error

When a large brush radius for textured brushes in sculpt mode, the outer-most affected geometry doesn't apply the texture fully. This is especially noticeble on the Clay Strips and Paint brushes when the stroke method is set to anchored.

image

image

Exact steps for others to reproduce the error
Blend file = bug.blend

  • Open the File
  • Use the provided paint brush and clay strips brush on a subdivided cube or suzanne head like shown
  • Notice how the outer edges of the falloff is not updating the geoemtry fully
**System Information** Operating system: Linux-6.4.6-gentoo-x86_64-AMD_Ryzen_Threadripper_1950X_16-Core_Processor-with-glibc2.37 64 Bits, X11 UI Graphics card: AMD Radeon RX 7900 XT (gfx1100, LLVM 15.0.7, DRM 3.52, 6.4.6-gentoo) AMD 4.6 (Core Profile) Mesa 23.3.0-devel (git-50c29e1ffa) **Blender Version** Broken: version: 4.0.0 Alpha, branch: main, commit date: 2023-08-07 21:02, hash: `ecb3262bf049` Worked: -- **Short description of error** When a large brush radius for textured brushes in sculpt mode, the outer-most affected geometry doesn't apply the texture fully. This is especially noticeble on the Clay Strips and Paint brushes when the stroke method is set to anchored. ![image](/attachments/66003c5f-447b-4bb0-8db4-30aa0e440be2) ![image](/attachments/b2d3ef59-5a87-4474-8be3-d5e33e1a78d9) **Exact steps for others to reproduce the error** Blend file = [bug.blend](/attachments/0ac4ad0b-dc37-4278-9440-957b914deefb) - Open the File - Use the provided paint brush and clay strips brush on a subdivided cube or suzanne head like shown - Notice how the outer edges of the falloff is not updating the geoemtry fully
bug.blend
5.0 MiB
Julien Kaspar added the
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 labels 2023-08-08 12:36:11 +02:00
Iliya Katushenock added the
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Sculpt, Paint & Texture
 label 2023-08-08 13:29:42 +02:00
YimingWu commented 2023-08-08 15:14:21 +02:00
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To me it looks like that the texture simply projected outside the mesh, from the angle of that it looks like the normal is perpendicular and already folded to back face when this is texture is drawn, thus it's not affecting anywhere. So I guess this is expected?

To me it looks like that the texture simply projected outside the mesh, from the angle of that it looks like the normal is perpendicular and already folded to back face when this is texture is drawn, thus it's not affecting anywhere. So I guess this is expected?
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Julien Kaspar commented 2023-08-08 15:25:08 +02:00
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The effect is quite a lot more glitchy while using the brush. There's definitely something going wrong here.

The effect is quite a lot more glitchy while using the brush. There's definitely something going wrong here.
Pratik Borhade commented 2023-08-09 06:12:27 +02:00
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Can confirm

Can confirm
Bart van der Braak added
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Bug
 and removed
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 labels 2024-08-14 13:10:09 +02:00
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