Why am I jittering? | Godot Café | Page 1

river oasis Jul 12, 2024, 4:02 PM

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I'm seeing quite a bit of litter when move around corners. I'm noticing it on the corners of buildings.

river oasis Jul 12, 2024, 6:02 PM

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So it's not just the GridMap. This is just a Mesh + StaticBody3D + CollisionShape3D.

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It's me that's jittering. If I lerp the camera position to player position and this is what I see now.

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Why am I jittering?

river oasis Jul 12, 2024, 7:03 PM

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I've increased the physics ticks per second to 90, re-enabling vsync reduces it, but it's still there.

solar veldt Jul 12, 2024, 8:29 PM

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Try setting the physics ticks to your screen refresh rate

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If that solves the jitter it's a physics interpolation issue

river oasis Jul 13, 2024, 12:44 AM

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So the physics ticks were set to refresh rate when the problem first revealed itself. But having physics ticks set to refresh rate gives me zero jitter with vsync on, but bad jitter with vsync off.

solar veldt Jul 13, 2024, 12:54 AM

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Mhmm I don't fully understand why but sounds like an interpolation issue nonetheless.
Currently there's no built-in interpolation for 3d you so would have to code it yourself or use a plugin like this one
https://github.com/lawnjelly/smoothing-addon/tree/4.x

GitHub

GitHub - lawnjelly/smoothing-addon at 4.x

Fixed timestep interpolation gdscript addon for Godot Engine (version 3.2 or later) - GitHub - lawnjelly/smoothing-addon at 4.x

river oasis Jul 13, 2024, 1:13 AM

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Amazing thanks, I was having a hard time with that addon because I was only finding links to the 3.x version. That has solved the problem 90%, it's far from perfect, but I can deal with it for now. Hopefully that gets implemented into the engine.

solar veldt Jul 13, 2024, 6:23 AM

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river oasis Amazing thanks, I was having a hard time with that addon because I was only find...

Currently targeted for v4.4 😉

#Why am I jittering?