Operating system: Windows-10-10.0.18362-SP0 64 Bits
Graphics card: Radeon (TM) RX 470 Graphics ATI Technologies Inc. 4.5.14758 Core Profile Context 21.2.2 27.20.14535.1000
Broken: version: 2.92.0 Release Candidate, branch: master, commit date: 2021-02-19 18:02, hash: rBb1142858d4ca
Short description of error
When rendering with Adaptive Sampling and Progressive Refine both enabled, white artefacts appear in parts of the image. Note that they only appear after a certain number of samples, when adaptivity kicks in, I presume. Also I only tested CPU rendering.
Top is rendered in 2.91, bottom in 2.92 rc, on same exacts settings.
Exact steps for others to reproduce the error
- Open attached file or:
- with the default scene set the render engine to Cycles
- enable Adaptive Sampling and Progressive Refine
- press F12 to render