Hard
Soft
Extra Soft
RADIUS
Setting values greater than 1 will soften the edges of the shadow.
Higher values might result in unwanted banding effects in the shadows. A larger mapSize allows for a higher value before these effects become noticeable.
If “Renderer shadowMap” is set to PCFSoftShadowMap, the radius won’t have any impact, and it’s recommended to increase smoothness by reducing the mapSize instead.
Please note that this won’t have any effect if the “Renderer shadowMap” is set to BasicShadowMap.
BLUR SAMPLES
The amount of samples to use when blurring a VSM shadowmap.