How long has it been? checks calendar 4 MONTHS?!?! It's been a WHILE indeed!
Let's have a look at how far along the HDR pipeline, one of the features being actively(ish) developed for FlightGear, is in 2023! It's poised to add some muchneeded modernization to FlightGear's rendering, and it mostly works for terrain. however, work is still needed to bring the ancient GUI to modern OpenGL and make sure the planes work!
Location: Reykjavík Airport (BIRK), Phuket Intl (VTSP)
More details: https://wiki.flightgear.org/HDR_Pipeline
Music: Palace of Roses Aakash Gandhi
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Get FlightGear 2020.3 lts: https://www.flightgear.org/
FlightGear is the free PC flight simulator under GNU GPL. It runs on Windows, Linux (Ubuntu, Red Hat...) and even Mac! It also has support for multiplayer and lots of APIs that you can use to support your own projects.