Prepar3D v4.5 terrain engine
Posted: Thu Mar 14, 2019 6:22 pm
I wondered if anyone from LM could confirm whether the terrain/autogen engine has been modified in v4.5?
Although I have a very smoothly running powerful machine and sim, after a >1hr flight across europe (Orbx, Active Sky yes) both terrain & autogen no longer continue to load in.
I have tried reducing and locking to 30FPS and not really pushing the rig (it will hit 60-80FPS). Eventually it does improve but at a substantial cost of fidelity which the system can easily handle. 2080TI / i9-9900K.
When I descend into the featureless, terrainless nothingness I press the wonderful Refresh Scenery mapped key and 1 minute later I have scenery loaded again.. BUT here is bug 2.. it only loads for that single tile!
If I continue to fly on say another 10 miles the autogen is nolonger loading and the CPU (8 of them) are at 100%. As a programmer I am desperate to know if there is a debug mode I could run to analyse what the engine is doing, it shouldnt be doing anything. Out of interest I left the sim paused CPU at 100% and watched TV. 21 minutes later suddenly the next tiles all loaded in and the sim was back from the dead! 21 minutes of computation on 8X 5GHZ cores! That's an absolutely insane amount of load!
My guess (as per my other posts) is that it is methodically still loading all the tiles along the route of the aircrafts path, which if it hasn't been keeping up could be half way across the world!
I know I am being ambitious here but could someone from LM confirm if this is a known issue and whether there are plans to address now or in future releases.
If my hunch is correct it seems there are a few relatively simple fixes that could help:
Finally, and pushing my luck further, I wondered if there is a way for me to apply to join the beta testing team for future versions? As a FS fan since '92 and a software developer of risk modelling systems with a high end rig + lots or scenery I might be able to provide useful feedback.
Thanks
Although I have a very smoothly running powerful machine and sim, after a >1hr flight across europe (Orbx, Active Sky yes) both terrain & autogen no longer continue to load in.
I have tried reducing and locking to 30FPS and not really pushing the rig (it will hit 60-80FPS). Eventually it does improve but at a substantial cost of fidelity which the system can easily handle. 2080TI / i9-9900K.
When I descend into the featureless, terrainless nothingness I press the wonderful Refresh Scenery mapped key and 1 minute later I have scenery loaded again.. BUT here is bug 2.. it only loads for that single tile!
If I continue to fly on say another 10 miles the autogen is nolonger loading and the CPU (8 of them) are at 100%. As a programmer I am desperate to know if there is a debug mode I could run to analyse what the engine is doing, it shouldnt be doing anything. Out of interest I left the sim paused CPU at 100% and watched TV. 21 minutes later suddenly the next tiles all loaded in and the sim was back from the dead! 21 minutes of computation on 8X 5GHZ cores! That's an absolutely insane amount of load!
My guess (as per my other posts) is that it is methodically still loading all the tiles along the route of the aircrafts path, which if it hasn't been keeping up could be half way across the world!
I know I am being ambitious here but could someone from LM confirm if this is a known issue and whether there are plans to address now or in future releases.
If my hunch is correct it seems there are a few relatively simple fixes that could help:
- When the user requests Refresh Scenery, kill all queued terrain loading requests.
- Constantly kill all terrain requests for autogen/mesh/terrain in the queue that are a) behind the aircraft and more than x miles away b) more than 20 miles away
- When a plane is > FL200 stop loading autogen / high res terrain textures / scenery
- Only consider or prioritise loading terrain / autogen in the direction of AC travel or Viewport.
Finally, and pushing my luck further, I wondered if there is a way for me to apply to join the beta testing team for future versions? As a FS fan since '92 and a software developer of risk modelling systems with a high end rig + lots or scenery I might be able to provide useful feedback.
Thanks