static void RemoveCaster(ShadowCaster c)
{
casters.Remove(c);
for (int i = 0; i < casters.Count; i++)
{
casters[i].index = 1 << i;
casters[i].ApplyPropertyBlock();
}
}
static int AddCaster(ShadowCaster c)
{
casters.Add(c);
return(casters.Count - 1);
}