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Fixed in 2022.1.X

Votes

0

Found in

2018.4

2019.4.7f1

2021.1

Issue ID

1278866

Regression

No

[Other] Recorded large 'int' values in AnimationClip are not preserved

Animation

-

How to reproduce it:
1. Open attached project '1278866.zip'
2. Load '[Test] Record Clip' from 'Assets' folder
3. Enter Play mode and let this scene play until it ends
4. Check recorded values in the Console window
5. Load '[Test] Play Clip' from 'Assets' folder
6. Enter Play mode
7. Check observed values in the Console window

Expected result: 'Test Animation Clip' AnimationClip preserves large 'int' value and prints the same value as recorded
Actual result: 'Test Animation Clip' AnimationClip doesn't preserve large 'int' value and prints the different value

Reproducible with: 2018.4.28f1, 2019.4.13f1, 2020.1.10f1, 2020.2.0b8, 2021.1.0a2

Notes:
- 'Test Animation Clip' prints '-869495424' instead of recorded int value - '-869495431'
- 'Test Animation Clip' AnimationClip preserves large 'double' and other types of value

  1. Response avatar

    Resolution Note (fix version 2022.1):

    Fixed in 2022.1.0a12
    Int curves are not supported in animation clip, see here: https://docs.unity3d.com/2021.2/Documentation/Manual/animeditor-AnimationCurves.html for a list of types that are supported.

    Under the hood, int values are converted to float values, so for numbers above 16777216, there is an imprecision.

    You can see that the bug is caused by a float conversion using this website: https://www.h-schmidt.net/FloatConverter/IEEE754.html
    Entering '-869495431' yields the expected '-869495424' value.

    Update : It only works for discrete attribute int now.

    This means Enum types will work, as well as the types that have the attribute [discreteAttribute]

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