Light probe iterators yield values of this type. Note that multiple light probes can affect a single fragment.

This is the version used when light probes are clustered.

This is the version that’s used when sufficient storage buffers aren’t available and consequently when light probes aren’t clustered. It simply does a brute force search of all light probes. Because platforms without sufficient SSBO bindings typically lack bindless shaders, there will usually only be one of each type of light probe present anyway.

Creates a new light probe iterator ready to iterate through light probes in the froxel containing the world_position.

Creates a new light probe iterator ready to search through light probes.

Note that multiple light probes can affect a fragment. The caller is generally expected to blend their influences together in a weighted sum.

Note that, theoretically, multiple light probes can affect a fragment, and the caller is generally expected to blend their influences together in a weighted sum. In practice, this version of light_probe_iterator_next is used on platforms that lack bindless shaders, so there will only be at most one light probe that affects the current fragment in the first place.