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Won't Fix
Votes
0
Found in
2018.2.14f1
2018.3.0a1
2019.1.0a1
2019.2.0a1
Issue ID
1095537
Regression
No
AnimationCurve.Evaluate() makes glitchy animation when used with System.Threading.Tasks.Parallel.For()
How to reproduce:
1. Download, extract and open user's attached project (New Unity Project.zip)
2. Open 'Scene'
3. Select 'NoiseViewer' object in the Hierarchy and in the 'Noise (Script)' component, change Scale to 50 to see the issue more clearly
4. Enter Play mode
5. Move around the X coordinate in the same component to see the issue
Expected result: Animation displays normally
Actual result: Glitchy green lines are appearing over the animation
Reproduced with: 2018.3.3f1, 2019.1.0a14, 2019.2.0a1
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Resolution Note:
AnimationCurve implementation is not thread safe. It uses a cache internally to speed up calculation and this will not behave properly when called concurrently. While you may evaluate a curve in a thread, you may not evaluate the same curve in multiple threads.