Maniphest T97729

Bug? Cycles. Double faces looks black in Cycles. (z-fight, overlapping faces)
Closed, Duplicate
Actions

Assigned To
None
Authored By
Vyacheslav (hitrpr)
Apr 30 2022, 2:28 AM
Tags
  • BF Blender
Subscribers
Pratik Borhade (PratikPB2123)
Vyacheslav (hitrpr)

Description

System Information
Operating system: Windows-8.1-6.3.9600-SP0 64 Bits
Graphics card: NVIDIA GeForce GTX 660 Ti/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 473.04

Blender Version
Broken: version: 3.1.2, branch: master, commit date: 2022-03-31 17:40, hash: rBcc66d1020c3b
Worked: 3.0.1, dc2d18018171, 2022-01-25 17:19

Short description of error
Double face in geometry (from different objects or same) looks black in Cycles render.

double_faced_cube.blend679 KBDownload

b3.1

b3.0

Exact steps for others to reproduce the error
Open file and enable Cycles render in viewport to see it

Related Objects

Event Timeline

Vyacheslav (hitrpr) created this task.Apr 30 2022, 2:28 AM
Vyacheslav (hitrpr) updated the task description.
Pratik Borhade (PratikPB2123) added a subscriber: Pratik Borhade (PratikPB2123).Apr 30 2022, 4:11 AM

Hi, thanks for the report.
This is a same issue as reported in T96475

In T96475#1323543, @brecht wrote:

This is not considered a bug currently, it's a documented trade-off of the new method.

Also mentioned in wiki page: https://wiki.blender.org/wiki/Reference/Release_Notes/3.1/Cycles#Ray_Tracing_Precision
Will close this as duplicate.

Pratik Borhade (PratikPB2123) closed this task as a duplicate of T96475: Overlapping geometry shows black faces on Cycles Blender 3.1 (Ray Tracing Precision).Apr 30 2022, 7:11 AM
Vyacheslav (hitrpr) renamed this task from Bug? Cycles. Double faces looks black in Cycles. to Bug? Cycles. Double faces looks black in Cycles. (z-fight, overlapping faces).May 3 2022, 7:46 PM