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    Sky Light

    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

    Sky 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

    Sky Light 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:
    OptionDescription
    Capture SceneThe captured scene will be used as a light source.
    Custom TextureThe custom cube texture will be used as a light source.
    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

    Sky Light 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.

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