Version: 2020.2
public bool streamingMipmaps ;

説明

Enable mipmap streaming for this texture.

When mipmap streaming is enabled, Unity will automatically load only the mipmap levels needed to render the Scene based on the current camera positions. Mipmap streaming must be enabled in order to use the Texture2D mipmap streaming API.

See Also: QualitySettings.streamingMipmapsFeatureEnabled.