<aside> 📜 TABLE OF CONTENTS

1. Introduction
2. Getting Started
3. Converting Blockouts to Buildings
4. Creating Staircase
5. Designing Buildings
6. Placing Props
7. Adjusting Materials
8. Merging Actors for Optimization
9. Tips & Trick </aside>

Lumen and Interior

When you're working with modular instances, the Lumen lighting system sometimes merges these pieces together into what are called "cards." These cards are used to represent surfaces for calculating light and reflections.

However, when Lumen merges these modular parts, it can mistakenly treat the interior spaces like a single, large surface. This often results in dark interior spaces because the lighting isn't calculated correctly for each individual part.

To fix this issue, you can use a console command to tell Lumen not to merge those modular instances when calculating light:

r.LumenScene.SurfaceCache.MeshCardsMergeInstances 0