Fogshadows graphical glitch.

[roboman2444]

This happens when looking straight up through a shadow.

Entire gallary: https://imgur.com/a/w1oe7

[VelocityRa]

Thank you for the report.
Can you provide more information, for example, what platform are you on and what are your specs (GPU mainly) ?

[roboman2444]

Debian testing
Nvidia 770 4gb
Nvidia prop drivers version 370.28

[yvt]

This bug was introduced in the commit 4047b61 when the equation of the fog density was modified to match the original client.

[pielover88888]

I am able to reproduce on Intel HD 4000 igpu on Windows 7

[roboman2444]

The offending line is
voxelDistanceFactor *= length(viewDir.xy) / length(viewDir); // remove vertical fog

or line 62 in Resources/Shaders/PostFilters/Fog.fs
Removing that lines fixes the weird artifacts, but I am not sure how much it matters for "correct" fog.

Also, I do believe that line should be AFTER
float screenVoxelDistance = screenDistance * voxelDistanceFactor; (line 68)
since it should only be modifying the density of the fog, not the raymarching sample distance and length, but I am not entirely sure.