What happens to the lighting values in an irradiance volume?
The lighting values from an Irradiance Volume will fade outwards until the volume bounds are reached. They will fade into the world’s lighting or another Irradiance Volume’s lighting.
What happens when more than one irradiance volume overlaps?
If multiple Irradiance Volumes overlap, smaller (in volume) ones will always have more priority. If an object is not inside any Irradiance Volume, or if the indirect lighting has not been baked, the world’s diffuse lighting will be used to shade it.
How is the spatial resolution of irradiance determined?
Spatial resolution for Irradiance Volumes is determined per probe. The local volume is divided into a regular grid of the specified dimensions. One irradiance sample will be computed for each cell in this grid. Defines the near and far clip distances when capturing the scene.
How is the irradiance volume computed in Blender?
Lighting is computed at the dot positions visible when the Irradiance Volume object is selected. If Ambient Occlusion is enabled, it will be applied onto diffuse indirect lighting. If both Ambient Occlusion and “Bent Normals” are enabled the indirect lighting will be sampled from the least occluded direction and appear more correct.
How are Irradiance Volumes stored in an array?
Irradiance Volumes ¶ Diffuse indirect lighting is stored in volumetric arrays. These arrays are defined by the user using Irradiance Volume objects. They control how arrays are placed in the world as well as their resolution.
How is the volume of an irradiance probe defined?
A probe object only influences the lighting of nearby surfaces. This influence zone is defined by the Distance parameter and object scaling. The influence distance varies a bit, depending on the probe type. For Irradiance Volumes, the influence inside the volume is always 100%.