Water Shader turns into a pixelated mess

[turtle09]

When the player's camera it at the edge of the surface of the water, almost submerged, this happens:

Close (reflection looks normal):


Closer (pixelated):


Closest (a mess):


Screenshots were taken on the 0.44 Release Build with all water shader settings turned on highest.

[psi29a]

What kinda hardware and OS are you running? Do you have an idea to driver/module version for your GPU?

[AnyOldName3]

Wait, this isn't a thing for everyone? I assumed it was just how the water shader worked.

[psi29a]

Wait, this isn't a thing for everyone? I assumed it was just how the water shader worked.

I honestly can't tell if this is sarcasm or not.

[AnyOldName3]

No, I've legitimately always had this issue and thought it was an edge case where our shader's approach just wasn't very good rather than a bug where the behaviour was unexpected and therefore worth investigating and fixing.

[psi29a]

I saw this once and chalked it up to a driver/module issue. Now I'm curious... I have Intel, Nvidia and Amd lying around.

Can anyone else chime in if they can reproduce this and with what GPU hardware and driver version?

[AnyOldName3]

For reference, I'm seeing this on a Vega 56 with AMD's proprietary Windows driver. I tested on another machine, too, which has a GT 850M and Nvidia's proprietary Windows driver and it didn't exhibit the issue. I couldn't test on that machine's integrated Intel GPU as it's not detected as having S3TC support properly.

[turtle09]

My pics were taken from an RX 580, so it probably is an AMD issue. Latest drivers, Windows 10.

[Pop000100]

I also use a AMD GPU(R9 390) with 18.5.1 drivers and get this issue.

[AnyOldName3]

I'll try running the shader through a GLSL verifier in case it's a case of the shader relying on undefined behaviour.