#4131·FlaxEngine

[Bug]: (Specific?) custom mesh breaks outline rendering tutorial

Author: xxSeys1Created May 31, 2026Updated Sep 22, 2026
Labelsbugconfirmedgraphics

Description

Adding the model (see attached .zip file) to a scene that also implements the Custom Renderpass Outline Rendering Tutorial will break the outline (so probably the PostProcessEffect):

https://github.com/user-attachments/assets/58ca5a4f-6468-4633-a639-d66f429e664f

The outline appears in random places or not at all.

It also appears that the outline has problems rendering if both the Main Edit Window and the Game Window show the scene, or it's just broken in general (it did work before, I don't know what specifically broke it).

The test project I made to reproduce this in is attached as well, but I suggest using a fresh project to reproduce as I believe that my test project is already broken by using the attached model.

OutlineRenderPassTest - Copy.zip

Skydome.zip

Steps to reproduce

  1. Do the Custom Renderpass Outline Rendering Tutorial
  2. Enter play mode to test that everything works (it should work)
  3. Download "Skydome.zip", extract it and import "M_SkyDome.fbx" into Flax (default settings) and add it to the scene
  4. Enter play mode again, it should now be broken

Version

master branch

Relevant logs

bash