Sky Light
Sky Light draws an ambient light emitted by the skybox, sky or other distant parts of the scene. It helps with image-based lighting (Wikipedia).
Sky lights are very good choice for outdoor scenes where a lot of sky is visible. Under the hood Sky Light uses a cube texture and samples it (low mip map) to simulate realistic directional irradiance. Sky Light can use a custom texture or baked one. To update the capture press Bake button under the object properties.
Light Properties
| Property | Description |
|---|---|
| Color | Light emission color. |
| Additive Color | Additional light color to add. Source texture colors are sumed with it. Can be used to apply custom ambient color. |
| Radius | Light range (in world units). Use very high value to apply light globally. |
| Brightness | Light brightness parameter. Controls intensity of the light emitted by this actor. |
| View Distance | Controls light visibility range. The distance at which the light be completely faded. Use value 0 to always draw a light. |
Prope Properties
| Property | Description | ||||||
|---|---|---|---|---|---|---|---|
| Mode | Defines sky light source mode. Possible options: | ||||||
| Sky Distance Threshold | Distance from the light at which any geometry should be treated as part of the sky (in world units). Possible options:
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| Custom Texture | Custom light texture. Used only if Mode is set to Custom Texture. |
If Mode is set to Capture Scene, then use Bake button to update the captured image.
Note
To learn more about cube textures in Flax see this page.
Volumetric Fog Properties
| Property | Description |
|---|---|
| Scattering Intensity | Controls how much this light will contribute to the Volumetric Fog. When set to 0, there is no contribution. |
| Cast Shadow | If checked, light will cast a volumetric shadow to Volumetric Fog. Also shadows casting by this light should be enabled in order to make it cast volumetric fog shadow. |
Note
To learn more about Volumetric Fog effect see this page.