BVE6 Route lags and bugs.

[adfriz]

Description

as title said.

Reproduction

Load Uchibo_3793F_ATS-P.txt to route viewer, and look at the statistic. it should show a lot of opaque faces, unstable fps and weirdly large rail radius

note: do not turn on shadow feature, i haven't found the solution why turning it on in BVE5/6 route is so heavy than openbve csv route.

Route

https://bvets.net/uchibo/

Train

no trains, just try loads in route viewer.

Logs

Route viewer report :

Warning		BVE5: The structure HamanoSta has been declared twice: The most recent declaration will be used.
Warning		BVE5: An invalid sound radius was specified for key ,,(バッファー数),,その音を同時に再生できる数. 省略した場合は 1 になります.
Warning		BVE5: No sound file was specified for key ,,(バッファー数),,その音を同時に再生できる数. 省略した場合は 1 になります.
Error		BVE5: Structure KTK200_0 was not found on Track KTK-3 at track position 13355m
Error		BVE5: Structure KTK200_0 was not found on Track KTK-3 at track position 13375m
Error		BVE5: Structure KTK200_0 was not found on Track KTK-8 at track position 13400m
Error		BVE5: Structure KTK200_0 was not found on Track KTK-6 at track position 13432m
Error		BVE5: Structure KTK200_0 was not found on Track KTK-9 at track position 13435m
Error		BVE5: Structure KTK200_0 was not found on Track KTK-5 at track position 13450m
Error		BVE5: Structure KTK200_0 was not found on Track KTK-9 at track position 13455m
Error		BVE5: Structure KTK200_0 was not found on Track KTK-5 at track position 13477m
Error		BVE5: Structure KTK200_0 was not found on Track KTK-5 at track position 13497m

Related information

• Operating system : windows 11
• OpenBVE : latest master with commit 9b04df1

[leezer3]

The radius is probably fine- Those are normally an artifact of the interpolation used.

Sane with the opaque faces. Most stuff uses a 5m rail segment, and this tends to add up fast. IIRC if you try in the main game it'll do more aggressive face squashing than the viewers.

Shadow speed is essentially just going to be a factor of the number of faces, when you're running multiple passes :)

[adfriz]

more extremely large radius.

---

but what i think odd is after certain position the fps getting stable again and i can use shadow with very playable fps, maybe because its unloaded previous part of the route?

[adfriz]

i think this is the suspect... this overhead wire pole seems to be too much, or maybe it get rendered not efficiently? transparency overdraw? too much drawcalls?

[leezer3]

OK, those poles are nuts....

I've added Uchibo20 to the aggressive optimisation list. At this rate, it might be more sensible to aggressively optimise all BVE5 content, but that slows down loading significantly.

Have also made a tweak to the interpolation function, which I think will eliminate most of the overlarge interpolated values. (Although they were essentially harmless)
Please keep an eye out for any new bugs though.