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Issue ID




[HDRP] Visual artifacts occur when an object is moved quickly

Package: Scriptable Render Pipeline HD


How to reproduce:
1. Open the attached 'H' project
2. Open 'Inventory' scene and go to Play Mode
3. Select item by pressing 'Enter' key
4. Use the arrow keys to move the item around on the grid
5. Observe the item when moving it

Expected result: No artifacts
Actual result: Texture artifacts stay on the grid lines for a few milliseconds

Reproducible: 2019.1.8f1 (5.16.1), 2019.2.0b7 (6.7.1), 2019.3.0a7 (6.7.1)
Can't reproduce:
- 2018.4.3f1, 2019.1.0a1, 2019.2.0a1, because of package errors
- 2017.4, because HDRP was not introduced

  1. Response avatar

    Resolution Note:

    The issue occurs because of the TemporalAA effect. Tweak a bit the TAA settings to minimize the problem but there isn't much to do here to solve this case other than updating the algorithm with more aggressive rejection which will kill the benefit of using TAA. Also, another antialiasing like FXAA or SMAA can be used to avoid this problem.

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