# SceneBackdrop

> Talos next · Since next

A stylised backdrop drawn in the standard renderer's sky pass: cel clouds and distant ridges, no geometry.

The HD renderer ignores it. See docs/SKY.md, Backdrop.

## Fields

| Field | Type | Required | Default | Allowed values | Description |
|---|---|---|---|---|---|
| `preset` | `SceneBackdropPreset` | no |  | `coast`, `hills`, `alpine` | A ready backdrop, so a swap is one word: coast (clouds, a low sandstone headland and green hills), hills (clouds, two green rolling layers), alpine (few clouds, a jagged grey-blue range with a near forest layer). Fields written beside it override that part of it. |
| `skyScale` | `number` | no | `1` |  | Brightness of the sky as a background only, 0..4: the light it casts is unchanged, so a bright exposure no longer whites the sky out. Default 1. |
| `clouds` | `SceneBackdropClouds` | no |  |  | Cel clouds. Absent: the preset's, or none. |
| `ridges` | `SceneBackdropRidge[]` | no |  |  | Distant silhouettes, farthest first, at most 3. Absent: the preset's, or none. |

## See also

- `SceneBackdropPreset`
- `SceneBackdropClouds`
- `SceneBackdropRidge`