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Store previous relative transforms in XRHandModifier3D #91335

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merged 1 commit into from
Apr 30, 2024

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devloglogan
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This change makes it so that XRHandModifier3D stores the transforms of each joint on every full execution of the _process_modification() function. These transforms can then be applied if XRHandTracker::get_has_tracking_data() returns false.

After recent updates I was bumping into issues on Quest 2 / Pro where, on opening the system menu, the hand models would jarringly snap back to a resting position. With this PR, the hands will instead remain frozen in position.

@devloglogan devloglogan requested a review from a team as a code owner April 29, 2024 21:09
@dsnopek dsnopek added this to the 4.x milestone Apr 29, 2024
@dsnopek dsnopek modified the milestones: 4.x, 4.3 Apr 29, 2024
@dsnopek dsnopek requested a review from a team April 29, 2024 21:14
scene/3d/xr_hand_modifier_3d.cpp Outdated Show resolved Hide resolved
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Thanks!

In my testing, this works perfectly, fixing the regression. (I tested with the 'godot_openxr_vendors' demo on Quest 3.)

The code looks good too! The one thing I wonder is if we should have an option to turn off this behavior or a way clear the previous data? Although, I can't fully picture the use-cases for that now, so I don't think we should hold up the PR on that.

@akien-mga akien-mga merged commit ec73f56 into godotengine:master Apr 30, 2024
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Thanks!

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5 participants