Sun light linking issue on direct sampling (with Light Tree on) #108374

Closed
opened 2023-05-28 14:06:28 +02:00 by Bintang Pratama · 3 comments

System Information
Operating system: Windows-10-10.0.19044-SP0 64 Bits
Graphics card: Quadro P5000/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 528.02

Blender Version
Broken: version: 4.0.0 Alpha, branch: main, commit date: 2023-05-27 16:27, hash: 0a004fbad460
Worked: not really sure

Short description of error
The direct sampling of Sun light isn't working properly with light linking and light tree, resulting in a massive increase in noise for the sun light.
On the file below, there are collection for light and shadow link to only affect "Chars" collection, however the sun light isn't working properly while others seem to be fine.

Exact steps for others to reproduce the error

  1. Open this blend file below.
  2. Do render viewport and change light type between all light types.
  3. See that the sun type isn't make the light visible on objects that is linked, only when increase the Angle of the sun that light is barely visible.
**System Information** Operating system: Windows-10-10.0.19044-SP0 64 Bits Graphics card: Quadro P5000/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 528.02 **Blender Version** Broken: version: 4.0.0 Alpha, branch: main, commit date: 2023-05-27 16:27, hash: `0a004fbad460` Worked: not really sure **Short description of error** The direct sampling of Sun light isn't working properly with light linking and light tree, resulting in a massive increase in noise for the sun light. On the file below, there are collection for light and shadow link to only affect "Chars" collection, however the sun light isn't working properly while others seem to be fine. **Exact steps for others to reproduce the error** 1. Open this blend file below. 2. Do render viewport and change light type between all light types. 3. See that the sun type isn't make the light visible on objects that is linked, only when increase the Angle of the sun that light is barely visible.
Bintang Pratama added the
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Normal
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labels 2023-05-28 14:06:29 +02:00
Iliya Katushenock added the
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Render & Cycles
label 2023-05-28 14:08:23 +02:00
Jesse Yurkovich changed title from Sun light linking issue on direct sampling to Sun light linking issue on direct sampling (with Light Tree on) 2023-05-28 21:46:14 +02:00

Turning the Light Tree off will allow things to work so the problem is related to that.

Turning the Light Tree off will allow things to work so the problem is related to that.
Member

@weizhen , can you check?

@weizhen , can you check?
Sergey Sharybin self-assigned this 2023-05-30 15:38:46 +02:00

It is something I've attempted to fix in #108311, but turns out I made a mistake in the regression test file and did not see it is not a complete fix.

Attaching a file which was supposed to be committed to the regression tests svn.

It is something I've attempted to fix in #108311, but turns out I made a mistake in the regression test file and did not see it is not a complete fix. Attaching a file which was supposed to be committed to the regression tests svn.
Blender Bot added
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Resolved
and removed
Status
Confirmed
labels 2023-05-30 17:39:59 +02:00
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Reference: blender/blender#108374
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