#AMD visual bug with seeing out of water's surface

1 messages · Page 1 of 1 (latest)

lyric plank
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not sure if this is just how water works or what.. certainly not how it works irl. complete reflection instead of partial.

ivory flicker
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are you referring to snell's window?

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we simulate proper refraction angles, irl when underwater they call it snell's window.
It's realistic, but no other game does it realistically because it requires to be fully ray-traced (like this game is).. so I understand the confusion.

lyric plank
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the second I go bellow the surface I can't see anything in the sky at all - is this too fancy

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is this a "my whole life is a lie" moment.. haha

ivory flicker
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yeah it's the snell's window... you only see a certain angle above you, then it's just reflection of whatever is underwater

ivory flicker
lyric plank
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I need to go outside more thats crazy

ivory flicker
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Welcome to Archean!

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will flag this as "not a bug" then

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Apparently, fish use that phenomenon to hunt for other fish, they can see them even if hidden beind something

lyric plank
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but like

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if there are like 10mm of water between me and the sky

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this still happens

ivory flicker
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yes, and even more so

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your snell's window is a specific angle, so a smaller window when closer to the surface

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it's not a opacity thing, it's really an refraction thing

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light changes direction as soon as it changes medium (from air to water and vice versa)

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Snell's window (also called Snell's circle or optical man-hole) is a phenomenon by which an underwater viewer sees everything above the surface through a cone of light of width of about 96 degrees. This phenomenon is caused by refraction of light entering water, and is governed by Snell's Law. The area outside Snell's window will either be compl...

lyric plank
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that's so weird

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when I'm underwater I'm generally not looking up I'm diving for things

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I am getting some irl footage of this

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thats so cool

ivory flicker
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I bet you wanna go take a swim irl now to try and experience this for real

lyric plank
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yea

ivory flicker
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report back on here once you did that 🙂