Most likely the light is not set to cast volumetric shadows, or you’re using raytraced shadows which don’t support volumetrics.
You’d most likely get better results with a spotlight, this really doesn’t seem like an appropriate use of a rect light.
Most likely the light is not set to cast volumetric shadows, or you’re using raytraced shadows which don’t support volumetrics.
You’d most likely get better results with a spotlight, this really doesn’t seem like an appropriate use of a rect light.