Graphics glitches

Started appearing in Aug 24 build, probably also occurs on older August builds. Semi-transparent faces appear thinly striped and very occasionally there's a bogie object hanging in F2 view (very hard to reproduce tho, couldn't myself after it started happening)

It's mega hard to see anything much in that picture.

I think I can reproduce it though, let me think about it / twiddle.


Should now be fixed in the build from today- Actully a typo

TLDR: Needed to implement the GL.AlphaFunction inside a shader to *finally* get GL3 working right on Apple, and allow things to work properly on later than High Sierra.
This doesn't seem to be quite right.

The issue is visible on panels next to doors - there's striped transparency, also light vertical part pokes through darkened glass far in front.

The stripes are gone now, but there are still transparency glitches when I go farther from that door, also invisible transparency edges seem more visible now.

Hmm.

I'll play some more, but as we've found, it's seriously hard to reproduce a closed box

whoops, forgot the train - SOAC from https://bveworldwide.forumotion.com/t1943-1970s-new-york-city-transit-recreation-in-openbve

also seems to occur only when there's enough other transparent objects around sometimes