rt_shadow

Traces shadow rays from each shaded point toward every light, sampling a disc at the light so the penumbra tightens where an occluder meets its receiver and widens with their separation.

Bindings

name	kind
scene_color	texture2d
scene_material	texture2d (sample: uint)
scene_depth	texture_depth
scene_tlas	acceleration_structure
frame_cam	buffer
lights	buffer
shadowed_out	storage2d (rgba16f)

Params

name	type	what it is
strength	float	how much a fully blocked light is reduced
bias	float	metres the ray origin lifts off the surface
sourceRadius	float	world radius each light is sampled as
samples	float	area rays per light
ambientR / ambientG / ambientB	float	the floor a fully shadowed point falls to