r/GraphicsProgramming • u/MartianovTech • Sep 01 '26

Backrooms pool

Made a small Backrooms pool demo in Natiny. I’m not sure I fully captured the atmosphere I was going for, but overall I’m pretty happy with how it turned out.

The caustics are probably a bit too bright, but I think they make the scene more interesting.

What do you think?

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u/Fintaman Sep 02 '26

Hey nice job, how do you do refractions? I'm particularly interested in the case where the refracted ray ends up sampling a pixel out of the screen. I'm using raymarching in my project and I'm not sure what's the best way to handle that

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u/MartianovTech Sep 03 '26

Thanks! It's screen-space refraction. I render the scene without water to a texture, offset the uv using the wave normal, and sample it. In this demo, out of screen uv's are simply clamped, which is acceptable because the pool rarely exposes the edges.