Workbench: Shadow with spike artifacts #120663
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Reference: blender/blender#120663
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System Information
Operating system: Linux-6.5.0-26-generic-x86_64-with-glibc2.35 64 Bits, X11 UI
Graphics card: NVIDIA GeForce RTX 2060/PCIe/SSE2 NVIDIA Corporation 4.6.0 NVIDIA 535.161.07
Blender Version
Broken: 4.0.3, 4.1.1, 4.2
Worked: 3.5.1 was not perfect, but way better (
19dbe049db
caused a "regression" of sorts here)Short description of error
Rendering in workbench with Shadow enabled is showing some weird line artifacts on some meshes. This same mesh and previous version of the file did not show these artifacts in 4.0.
Exact steps for others to reproduce the error
Based on the default startup or an attached .blend file
Workbench Render Line Artifactsto Regression: Workbench Render Line ArtifactsI can confirm.
Looks like shadow spikes.
Possibly related to:
#113430: Solid viewport shading shadow rendering bug
4.0 presents the same problem
Regression: Workbench Render Line Artifactsto Workbench: Shadow with spike artifacts3.5.1 was still fine, will try to check which commit broke this
Hold on, 3.5.1 can also have the artifact if you change the light direction... but in 3.6, it is definitely worse...
Like I said, 3.5.1 is also not perfect, but this is the commit that had a bad influence (or at least exposed something that was wrong from the beginning) :
19dbe049db
CC @ideasman42
CC @HooglyBoogly