ios - How to exclude model's shadows on itself? -


i have scnlight type scnlighttypedirectional. when scene rendered, model casts shadows on , wasn't expectation. how exclude model's shadows on itself?

or how smooth shadows edge? looks unnatural now.

there scenario : enter image description here

well, find simple way achieve loss material details.

change light model of material scnlightingmodelconstant , exclude model lighting calculation of scnlight.

1. set light model

scnlightingmodelconstant consider ambient light shading, need ambient lights keep model visible.

model.geometry.materials.firstobject.lightingmodelname = scnlightingmodelconstant;

2. set category bit mask of model , lights

model.categorybitmask = 1; directionallight.categorybitmask = ~1ul;

if results of bitwise , of categorybitmask zero, node not take consideration light illumination, there no self-shadows anymore. shadows model casted still remain in scene.


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