Documentation
Brightness / Contrast
VFX Loom 1.0 reference for the Brightness / Contrast node.
Color
processing.brightnessContrast 
Overview
Adjusts bounded RGB brightness and contrast while preserving alpha.
Straight-alpha RGB adjustment with clamped adjusted RGB; Factor blends original RGB with adjusted RGB; alpha is copied exactly.
- Category
- Color
- Internal ID
processing.brightnessContrast- Version
- VFX Loom 1.0
Inputs
| Input | Type | Required | Default | Meaning |
|---|---|---|---|---|
| in | Image | Required | — | See the overview for the node's documented behavior. |
Properties
| Property | Type | Default | Animatable | Range / options | Effect |
|---|---|---|---|---|---|
| Brightness | Scalar | 0 | Yes | Hard -1..1 · UI range: soft | Animatable control; changing it over time varies the node response. |
| Contrast | Scalar | 0 | Yes | Hard -1..1 · UI range: soft | Animatable control; changing it over time varies the node response. |
| Factor / Influence | Scalar | 1 | Yes | Hard 0..1 | Animatable control; changing it over time varies the node response. |
Outputs
| Output | Type | Meaning |
|---|---|---|
| out | Image | The production node output described by the overview. |
Usage
In practice
- Use Brightness / Contrast when the graph needs Adjusts bounded RGB brightness and contrast while preserving alpha.
- Straight-alpha RGB adjustment with clamped adjusted RGB; Factor blends original RGB with adjusted RGB; alpha is copied exactly.
- Use it after a source or scalar field, then send the adjusted image or colour value to a downstream composite or material stage.
Notes / limitations
- No step is declared for Brightness, Contrast, or Factor.