Developer Notes

This is caused by temporal AA and not easily fixable.

Description

When adding a bsp Geometry object into the world the edges flicker. The effect can sometimes be seen better if you change the tessellation of an object that has it.
Observed on border edges of a selected Additive brush.
When using with a Subtractive brush, effect is observed where a Subtractive brush intersects and Additive brush.

Steps to Reproduce
  1. Open a default new level
  2. Create an add sphere object
  3. Navigate to the brush settings and increase the tessellation to max

Result: Heavy flickering

Expected No flickering should occur.

Have Comments or More Details?

There's no existing public thread on this issue, so head over toAnswerHub just mention UE-30764 in the post.

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ComponentTools - BSP
Affects Versions4.124.13.24.14.34.15.24.16.14.184.194.204.21
CreatedMay 13, 2016
UpdatedMay 21, 2019