Here we are again, indeed I am currently experiencing bad FPS on the last stable version of FlightGear (2018.2.1). In Fact, the bad performances started with the first of the 2018 releases. Last time I posted a similar problem, but it was all my fault, a library conflict due to open scene graph from Open Morrowind, but this time it seems not to be mine. Even with lower graphics settings my FPS are around 20. In the 2017 releases it was almost all the time at 60 FPS. This issue is present on all aircraft in all airports.
So here are my computer specs :
OS : Debian Testing 64 bits (in order to obtain the last open-source driver for my AMD card)
CPU : AMD FX 6300 3.5 GHz Hexa-Core
GPU : AMD R9 380 - Open-source Drivers (Mesa 18.0.3.1 - Kernel 4.16)
RAM : 16GB RAM DDR3
SPU : Focusrite Scarlet 2i2
MIC : MB-60 set Mic
I forgot to mention that I have compiled Simgear and FlightGear myself, from the last stable available at Sourceforge. So here are the option I use for cmake.
Simgear cnake config =
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cmake. -DENABLE_OPENMP=ON -DENABLE_SIMD=ON
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make -j6
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make install
Flightgear = Only using
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cmake.
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make -j6
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make install
And here are my launch option for the FGFS in the launcher :
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--prop:/sim/rendering/multithreading-mode=AutomaticSelection
#--prop:/sim/rendering/multithreading-mode=CullDrawThreadPerContext
#--prop:/sim/rendering/multithreading-mode=DrawThreadPerContext
#--prop:/sim/rendering/multithreading-mode=CullThreadPerCameraDrawThreadPerContext
--callsign=F-DGRS
--multiplay=out,10,mpserver01.flightgear.org,5000
--multiplay=in,10,,5005
--enable-horizon-effect
--fog-nicest
--shading-smooth
--enable-distance-attenuation
--enable-ai-models
--disable-ai-traffic
--httpd=7070
#--visibility=50000
--ai-scenario=foch_demo
--ai-scenario=nimitz_demo
--ai-scenario=clemenceau_demo
#--carrier=Eisenhower
#--prop:bool:/sim/multiplay/hot=true
#--console
#--prop:/sim/terrasync/svn-server=http://ns334561.ip-5-196-65.eu:8888/trunk/data/Scenery/
#--multiplay=out,10,54.165.96.98,5000
#--disable-random-objects
#--prop:/sim/rendering/texture-compression=off
#--prop:/sim/rendering/random-vegetation=0
#--prop:/sim/rendering/random-buildings=0
#--disable-specular-highlight
#--disable-clouds
#--disable-clouds3d
#--shading-flat
#--fog-fastest
#--disable-distance-attenuation
#--disable-enhanced-lighting
#--prop:/sim/rendering/particles=0
#--prop:/sim/rendering/multi-sample-buffers=1
#--prop:/sim/rendering/multi-samples=2
#--prop:/sim/rendering/quality-level=0
#--prop:/sim/rendering/shaders/quality-level=0
#--prop:/sim/sceneryloaded-override=1
#--prop:/sim/rendering/draw-mask/terrain=0
#--model-hz=500
#--addon=/home/dogers/flightgear-fgaddon/Addons/SpokenATC
#--addon=/home/dogers/flightgear-fgaddon/Addons/SpokenGCA
I also use ALS rendering and advanced weather modeling.
So it would be nice to know if anyone else is experiencing the same issue as myself and if there is a potential clue about what cause it.
If you need any other information, feel free to ask.
Thank you very much !