Local reflections

Phil101

Hi everyone. As you can see in the above image I have local reflections on the water. The problem is it looks like there is no roof on the hanger.

To see more clearly what the reflections are doing I put this test material on the water to just show the reflections and it clearly shows a lot of annoying occlusion happening.

Thanks for any ideas on getting a solution to this

EarthQuake

Local reflections are screen-space based, this means that only what is visible in the frame can be reflected. So areas like the underside of the plane and the roof of the hangar unfortunately can't be reflected as they are not visible.

Phil101

Dam of course. Is there really no alternatives in Marmoset? Without proper reflections its hard to get this scene to the next level.

CrazyButcher

maromeset could add support for cubemap proxies? Those are artist defined boxes that can be scaled individually on their axis, and would serve as fallback to the screen-space reflection.

EarthQuake

Phil: Sorry, but local reflections are the only option at this time.

Christoph: We're looking into some solutions for handling this better in the future, we would like to keep everything realtime with no pre-baking though so IBL probes are probably not the direction we will take.

Phil101

Hmm this is quite a strange one. Seriously I would take any solution having paid for a license on this. Otherwise it feels like the only way around this is to not have water in my scene which destroys my whole concept. Are you guys just doing forward rendering with this? I agree with CrazyButcher, there should at least be a fallback until their is a better solution to just local reflections.

monkeyscience

Add some rippling to the water and you'd be amazed at what you'll get away with.

Cubemaps won't help you much either. They are point-sources of reflection and you'll run into issues with contact reflections, trading benefits for short-comings, etc. Raytracing is the answer, obviously. But

Phil101

I'm so so sorry Marmoset for breaking your engine lol. Cheers Monkeyscience I will give that a go. Maybe I can somehow impose that over it, might be a bit fiddly.

radiancef0rge

You didn't break the engine... Its screenspace reflections and the roof is not on the screen.

Phil101

Yeah its broke for this scene lol

radiancef0rge

Its not broke if its expected behavior

NeonMonkey

This may be nutty but can you go old school and have all of your geometry above your water plane flipped vertically beneath the water to fake a reflection? That's how we did it back in the Nintendo DS days ;-)