Limited support
This feature is only present in Momentum Mod and Portal 2: Community Edition.

Quick Start Guide

"I want an unmoving normal Source engine light, but better, and not slow"

  1. Add a light_rt or light_rt_spot entity

  2. Set "Light mode" to "Specular"

  3. Make sure the "Shadowed" spawnflag is UNCHECKED

  4. Set "Radius" and "50 percent scale" KeyValues to adjust the look and feel

  5. For best results, use PBR textures with appropriate MRAOs and normal maps

Keyvalues

Spawnflags

"I want an expensive light that has fancy shadows or moves around"

  1. Add a light_rt or light_rt_spot entity

  2. Set "Light mode" to "Static Bounce" (for mostly stationary) or "Fully Dynamic" (frequently moves)

  3. Set "Initial Shadow Size" to somewhere around 5 to 7

  4. Make sure the "Shadowed" spawnflag is CHECKED

  5. Set "Radius" and "50 percent scale" KeyValues to adjust the look and feel

  6. For best results, use PBR textures with appropriate MRAOs and normal maps

Keyvalues

Spawnflags