Is it possible to change the sun shape?

i dunno tbh. you have a setup. i have a setup. i can get a directional light to cast a clean reflection on a mirror plane. i dunno how much water normals influence it. if you use the default sky sphere bp you gotta do some math and sync the blueprint’s sun size with the directional light’s source angle.

without skysphere… just a directional light doesn’t work. it’s not occluded by geometry. needs some hacksh!t.

i have no synced sky material at this point. don’t care.

i have a different low end setup that involves a baked or captured and synced skylight hdri. that does the sky light reflection, but it’s a prototype in my lab, rn. not ready yet. : )