Blender 2.92 Alpha – Hybrid Rendering using Adaptive Sampling will cause broken CPU tiles when GPU is finished #82474
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Reference: blender/blender#82474
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System Information
Operating system: Windows-10-10.0.19041-SP0 64 Bits
Graphics card: GeForce GTX 1060/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 457.09
CPU: AMD Ryzen Threadripper 1950X 16-Core Processor 3.40 GHz
Blender Version
Broken: version: 2.92.0 Alpha, branch: master, commit date: 2020-11-06 06:10, hash:
9a7da1242dWorked: n.a.
Short description of error
When rendering hybrid the render looks fine till the point the GPU has finished and the remaining CPU tiles will finish immediately with broken tiles (see picture).
Exact steps for others to reproduce the error
Maybe it's an AMD Ryzen issue?
AI043_006_v006_Portal_Lights_CYCLES_BUG.blend
Added subscriber: @Renderbicks
#82473 was marked as duplicate of this issue
Not an AMD Ryzen issue. Tested it with a GTX 1060 and i7-8750H. Same result.
The issue also appears when using the empty scene with a default cube set to full screen. There are broken tiles at the end. In this case just one because of the different render speed.
Added subscriber: @rboxman
Potentially a duplicate or related to #82351
Added subscriber: @Alaska
Yes, this is most likely a duplicate of #82351. Merging the tasks.
Closed as duplicate of #82351