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2.8 blender freezes during preview render when using adaptive subdivision/displacement node with low displacement scale values
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Description

System Information
Operating system: Windows-7-6.1.7601-SP1 64 Bits
Graphics card: Quadro 1000M/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 354.42

Blender Version
Broken: version: 2.80 (sub 52), branch: master, commit date: 2019-03-29 00:43, hash: rB99d4321feff6
Worked: 2.79

Short description of error
Blender freezes when trying to initiate preview render while using adaptive subdivision/displacement node in experimental feature set with either small displacement scale or small dicing scale.

Exact steps for others to reproduce the error

  1. see attached blend file and use small displacement scale values or small dicing scale values.

http://pasteall.org/blend/index.php?id=51468

For example:

Preview render does initiate with displacement node scale value at .2 and dicing value at 1.00, but freezes if displacement scale value is set to .1. Blender will not freeze if displacement node is set to .1 and dicing value is at 3.00, for example, but will freeze if dicing value is set to 2.00.

Details

Type
Bug

Event Timeline

Jim C (semaj) renamed this task from 2.8 adaptive subdivision/displacement node freezes when displacement scale is set to low values to 2.8 adaptive subdivision/displacement node freezes before preview render when displacement scale is set to low values.Mar 30 2019, 2:14 AM
Jim C (semaj) renamed this task from 2.8 adaptive subdivision/displacement node freezes before preview render when displacement scale is set to low values to 2.8 blender freezes during preview render when using adaptive subdivision/displacement node with low displacement scale values .
Jim C (semaj) updated the task description. (Show Details)
Jim C (semaj) updated the task description. (Show Details)