[Bug]: TransparencySupersampling breaks rendering on AMD cards

[RetroForeverDev]

Tweaks version

outrun2006tweaks-b41d4e0f5be93bb67a20ad1cba4519bb291ab8a2

Describe your issue here (please attach the OutRun2006Tweaks.log file with your report, you can drag+drop it into the text area)

In the latest autobuild at the time of writing this, TransparencySupersampling was changed to work with alpha to coverage on AMD cards. While the effect looks great on the textures its supposed to apply to, its instead applied to most of the image:

Also note it does not apply to the trees in Deep Lake:

The above images are taken on Linux Mint using Proton. This is what it looks like on Windows 11:

Log from Linux Mint:

OutRun2006Tweaks.log

[emoose]

Ah darn, hoped it might work the same as NV's ATOC but guess not - just to make sure, does changing DX/ANTIALIASING in outrun2006.ini to 0/1/2 make any difference?
RestoreSkyGlow might also be affecting it, maybe worth testing that as 0

[RetroForeverDev]

While RestoreSkyGlow doesn't affect it, it is visibly affected by how high anti-aliasing is set (especially the dithering):
DX/ANTIALIASING=0

DX/ANTIALIASING=1

DX/ANTIALIASING=3

[emoose]

Guess with antialiasing = 0 there's probably nothing for the ATOC to work with there, too bad the others couldn't help it.

Just noticed NV's ATOC does actually show the same issue too, but our code would always switch it from ATOC -> SSAA immediately, so it wasn't noticeable - I'll disable the ATOC code for now, but will try seeing if there's some way to work it in only for certain objects soon.