Principled hair BSDF shading incorrect when input is connected #93102
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Reference: blender/blender#93102
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System Information
Operating system: Windows-10-10.0.19043-SP0 64 Bits
Graphics card: NVIDIA GeForce GTX 1080/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 496.49
Blender Version
Broken: version: 3.0.0 Beta, branch: master, commit date: 2021-11-11 18:49, hash:
bd734cc441
(and master 2021-11-15 hash:7e82c840b7a43b0594ba274c745f3049e0148d12
)Worked: 2.93.5
Short description of error
For the principle hair BSDF there is a difference between filling in the "Melanin" input in the node itself and connecting this input to another node with the same value; see the screenshots below. This also happens for the "Melanin Redness" and "Coat" inputs. The issue is also present for CPU renders.
Exact steps for others to reproduce the error
principled_hair_bsdf_issue.blend
Expected:
Problem:
Added subscriber: @mlaveaux
Principled hair BSFW shading incorrect when input are connectedto Principled hair BSDF shading incorrect when input are connectedPrincipled hair BSDF shading incorrect when input are connectedto Principled hair BSDF shading incorrect when input is connectedAdded subscriber: @PratikPB2123
Changed status from 'Needs Triage' to: 'Confirmed'
Added subscriber: @leesonw
I ran from debug mode and got the following assert P2599 and I added a call stack.
This issue was referenced by blender/cycles@3ef618eb5f
This issue was referenced by
8c0370ef7b
Changed status from 'Confirmed' to: 'Resolved'
This issue was referenced by
e1a3b697ec