Atmosphere haze color is dark in one direction, severity depending on skybox

[Defaultio]

BadAtmosphere.rbxl (19.9 KB)

When using atmosphere with Haze > 0, the haze color brightness shifts based on the direction. With most skyboxes I’ve tried, the haze darkens in the +X direction. With some skyboxes, the shift is severe, and with other skyboxes it is less severe but still noticeable.

“Whispy” skybox in positive X direction:

“Whispy” skybox in negative X direction:

“Cloudy4” skybox in positive X direction:

“Cloudy4” skybox in negative X direction:

In the .rbxl I attatched, I included several skyboxes in ReplicatedStorage to demonstrate. Cloudy5 is the only skybox to show the darkness happening on +Z instead of +X, and it is more subtle as well.

This discoloration is undesirable and disables accurate control of atmosphere color. In my game, players think there’s constantly a storm brewing to the east. I just want them to know that there isn’t a storm.

[Hippie_ofDoom]

Thanks for the report! We’ve filed a ticket to our internal database and we’ll follow up here when we have an update for you.

[Hippie_ofDoom]

I am in the process of checking over bug reports and following up on some bugs that haven’t received any activity in a while.
Is this issue still occurring or can you confirm that this bug has been resolved?

[FxllenCode (fallen)]

Actually, it doesn’t even work as intended on custom skyboxes at all:

0ee9aSVfca

Shall I file a separate bug report for this?

[Defaultio]

Still happening, easy to see by opening the repro file and looking at the haze color in different directions.

[Hippie_ofDoom]

Alright, thanks for the info i appreciate it.

[SamsonXVI (Samson)]

I noticed this in my game too. Is this a bug everyone is experiencing or are there only a few cases of it? Any idea of when it will be fixed?

[Firebrand1 (Firebrand)]

I’m currently experiencing this bug. There’s a dark splotch in one direction that doesn’t change no matter what properties I fiddle with. It’s difficult to achieve an immersive weather effect with this unexplained looming darkness in one direction.

Facing the +Z direction, fog looks mostly uniform (as expected):

After turning the camera left 90 degrees to look in the +X direction:

A dark splotch with a radial gradient is visible

[iiostream]

Hello! This is an issue with the skybox uploaded. If you examine the textures, the lower 3rd of them is very dark, and the lowermost texture used for the bottom of the skybox is black -therefore the irradiance calculated from the provided skybox is dark -A simple fix would be to replace the bottom image with a light color/white texture or find a skybox which is not predominantly dark on the lower portion. For clarity, here is a picture of one of the faces which is dark on the lower portion:

[Defaultio]

thank you for this long awaited explanation, but why does it disproportionately affect specific directions? The gradient to black is the same for all sides:

I’d like to keep my skybox black on the bottom because the underside of the map can be seen in some cases, and it makes sense for the void to be black.

[1nf1n1tyRX (F3lix)]

(sky512_bk_dark)
the gradient for sky to void has a more area of sky than void,
whereas,

(sky512_bk_dark)
the gradient has more void than sky.
if you want a side-by-side comparison-