User:Necolatis/HDR
On this page I detail my experiences with playing around with PBR and HDR in Flightgear 2020.4.0.
Render quality
It looks absolutely amazing when using model-pbr.eff with ORM texture.
Bugs
Black areas
This happens sometimes in HDR. Only when using model-pbr.eff, model-combined.eff don't have the issue. It goes away if I sit and wait about 1 to 2 minutes.
Dark halo
Some aircraft have a dark halo around the lower edge of the objects in HDR. The used effect is just stock model-combined without any adjustments. The halo goes away moving camera lower than the object that displays a halo.
Weak AA
The only I got to work was FXAA from driver, and that don't get shown in screenshots. Also tried --prop:/sim/rendering/hdr/antialiasing-technique=1 or 2 to no avail.
Textranslate
This type of animation seems to not work in HDR.
Missing model features
Ignores canvas background alpha
Canvas background color alpha is constant at 1.0. So canvas HUDs wont work.
Ignores model alpha (AC3D material)
Constant at 1.0
Thruster effect
It don't show.
Backout
It does something weird.