polygonOffsetSlope

Bias based on the change in depth in depth-resolution units by which shadows are moved away from the light. The default value of 2.0 works well with SHADOW_SAMPLING_PCF_LOW. Generally this value is between 0.5 and the size in texel of the PCF filter. Setting this value correctly is essential for LiSPSM shadow maps. Ignored when the View's ShadowType is set to VSM. Default: 2.0.