Module binding 

Binding indices inside the “lit + shadow” bind group (group 3).

Constants

ATLAS_2D

Binding slot for the 2D depth-array atlas (directional / spot).

ATLAS_CUBE

Binding slot for the cube-array depth atlas (point lights).

LIGHTING_UNIFORMS

Binding slot for the lit lane’s LightingUniforms uniform buffer.

SAMPLER

Binding slot for the comparison sampler shared by both atlases.