3D features ignore terrain elevation

[bloerwald]

Describe the bug

With terrain elevation turned on, everything is floating in the air. Location is irrelevant, only determines how high things float.

Expected behavior

Things should clamp to the ground.

Screenshots

System information

• OS: macOS Ventura 13.3.1 (22E261)
• Browser with version: Safari 16.4 (18615.1.26.11.23)

Additional context

Console shows possibly related warning:

[Log]     Vendor: Apple Inc.                         (main.460c71927472f098d2fd.js, line 4206)
          Renderer: Apple GPU
[Warning] Couldn't sample height                     (main.460c71927472f098d2fd.js, line 4192, x6)

[ivanbranco]

Seems to be a Safari related problem, reported also with Safari 16.3 (link)

[kayD]

I experience a possibly related problem #133

[wiesmann]

I'm seeing the same issue with Safari 16.5.2, note that the buildings on the nearby mountain (Züriberg) at around 600m altitude seem to correctly elevated, while the buildings in the plains (~430m) seem to be flying.

[kayD]

@wiesmann It would be nice to know if on Safari the strange behavior shown in 133#issuecomment-1611086030 is also present.

[bloerwald]

It would be nice to know if on Safari the strange behavior shown in 133#issuecomment-1611086030 is also present.

Not that exact behavior, but it really is weird: https://www.youtube.com/watch?v=o66AbxiUXxE

• pressed only a s and d, then panned with mouse a bit
• Safari 16.4 (18615.1.26.11.23).

[gy-mate]

The issue still persists in Safari 17.2.1.

[StrandedKitty]

@bloerwald @ivanbranco @kayD @wiesmann @gy-mate Hi guys, please let me know if any of you can still reproduce this problem. It seems like there is a bug in some webgl implementations related to immutable textures (or it's just me not using this part of the API properly), so I've changed the code a bit and it should be fixed now.

[gy-mate]

@StrandedKitty It works for me now, thanks a lot! :)

[kayD]

@StrandedKitty No issues with floating any more, neither on Firefox 120.0, nor on Vivaldi 6.5 (both on ubuntu)! Thanks so much!

[wiesmann]

Also fixed in Safari, thank you very much.

[bloerwald]

Original location to confirm, beautiful drop down to the neighbouring village. :)

[kayD]

@bloerwald which one is the correct image, the elevation in the second screenshot is much more pronounced (can be easily seen by flipping the two images back and forth). Was this another problem apart from the floating buildings?

[bloerwald]

@bloerwald which one is the correct image, the elevation in the second screenshot is much more pronounced (can be easily seen by flipping the two images back and forth). Was this another problem apart from the floating buildings?

Bottom one is with enabled terrain, top with disabled, see settings in top right. Terrain was fine before, it was only the buildings from what I can remember. Features are now correctly attached to terrain.

[kayD]

Please excuse stupid me overlooking that setting... Thanks for the answer!