# Sandbox.LightModulator.ModulationBlendMode

Limits how the processed texture can change each colour channel of direct light.

- Kind: enum
- Assembly: `Sandbox.Engine`
- Modifiers: sealed

## Fields

- [`Darken`](/api/Sandbox.LightModulator.ModulationBlendMode/Darken): Keep multipliers at or below one, allowing shadows without boosting light.
- [`Lighten`](/api/Sandbox.LightModulator.ModulationBlendMode/Lighten): Keep multipliers at or above one. Raise brightness above one to produce highlights.
- [`Multiply`](/api/Sandbox.LightModulator.ModulationBlendMode/Multiply): Multiply light by the processed texture, allowing both attenuation and amplification.