renderer2: fix 'fogvars' fog / fog issues

[ETLegacyTeam]

Author: @IR4T4 (IR4T4)
Date: 2014-08-02
Redmine Issue: 553, https://dev.etlegacy.com/issues/553

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As the title says - fog doesn't work.

Affected maps (f.e.):

• stalingrad
• baserace

Actually q3 and ET use different foq code! Vanilla ET/r1 don't use the fogTable. This has been removed with http://dev.etlegacy.com/projects/etlegacy/repository/revisions/4e5eba5b3977847342143350f0603514a495d3b9

I did try to add the q3 style for r1 but I wasn't able to adjust the density of foq to 'known ET' style fog. See attached images. Unfortunately I didn't do a screeny of a wide sight - the range of view is very short (max 1024 game units).

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Related commit(s):
f0633a9 - renderer2: q3/ET fog enabled refs 553
d6e4020 - renderer2: read all available submodel data from b..

[ETLegacyTeam]

From: @jackeri (Jacker)
Date: 2014-08-06T07:24:12Z

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This needs to be fixed with a custom glsl shader path, not a hard fix to do :)

[ETLegacyTeam]

From: @thunderpwn (thunder)
Date: 2017-04-08T15:38:46Z

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http://in2gpu.com/2014/07/22/create-fog-shader/

[ETLegacyTeam]

From: @IR4T4 (IR4T4)
Date: 2017-09-29T15:43:00Z

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I've had a look at this again and figured out why q3/ET fog wasn't visible in general. This has been fixed.

{FIXME}

• Make fog more foggy. Compared to r1 it's currently more a cut at the horizon.
• Rework SetFarClip() - see buildings (f.e. baserace) on different distances. It doesn't look natural.

[ETLegacyTeam]

From: @IR4T4 (IR4T4)
Date: 2017-11-21T21:36:04Z

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FIxed https://dev.etlegacy.com/projects/etlegacy/repository/revisions/7559cf478e9b50f9def18714aa2f44df5afa07ec

[ETLegacyTeam]

From: @IR4T4 (IR4T4)
Date: 2018-02-11T15:55:21Z

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Re-opened. Fog needs some optimizations see baserace or radar.
Compared to r2 It looks a bit too intensive and the sky on radar isn't visible.

[ETLegacyTeam]

From: @IR4T4 (IR4T4)
Date: 2018-03-20T09:42:31Z

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{FIXME}
Maps with fogvars set don't display this fog. Example: https://www.wolffiles.de/index.php?filebase&fid=4901

[ETLegacyTeam]

From: @IR4T4 (IR4T4)
Date: 2018-03-24T13:36:05Z

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Fog has been reworked (should be fine for a release) but it's still WIP.

[ETLegacyTeam]

From: @IR4T4 (IR4T4)
Date: 2018-03-27T08:55:48Z

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{FIXME}

• inspect global world fog using static density?

[ETLegacyTeam]

From: @thunderpwn (thunder)
Date: 2019-09-29T12:24:39Z

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still need to get both fogs on the maps loaded with shader only

[ETLegacyTeam]

From: @thunderpwn (thunder)
Date: 2019-10-06T11:19:10Z

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cant fix that maps issues atm..