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Maniphest T79310

Eevee Grass flickering
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Description

System Information:
Operating system: Windows 10
Graphics card: RTX 2080Ti
CPU: Intel i9 9900K

Broken version: 2.82a

Short description of error:
Grass flikering in Eevee engine, as you can see in this video example: https://youtu.be/NT1xwBta_yc

Exact steps for others to reproduce the error:
Open the grass file, and render the animation, then play the animation and you will see that grass is flickering.

The only workaround I found at this point is by using a different software to remove the noise:
Example DE:Noise for Premiere https://revisionfx.com/products/denoise/
The result after apply DE:Noise plugin: https://youtu.be/yRTKW3kwgZ0

Hope Blender can handle this in future, or maybe is a bug.

Grass.blend2 MBDownload

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Event Timeline

pistol ioan (pistoltoto) created this task.Jul 27 2020, 9:20 AM
pistol ioan (pistoltoto) updated the task description. (Show Details)
Germano Cavalcante (mano-wii) added a subscriber: Germano Cavalcante (mano-wii).Jul 28 2020, 8:47 PM

I don't see "Grass flikering" in the video. (Maybe it's because I don't have a trained eye).

pistol ioan (pistoltoto) added a comment.Jul 29 2020, 1:17 AM

Here I made one more video where I scale it so you can see it bigger and slower.
https://youtu.be/5utbCECHewA

I have test it by render it with different sampling settings, ex: 50 and 200 and is make no difference in result, the flickering is still visible.
Hope you can find out why.

Germano Cavalcante (mano-wii) added a comment.Jul 29 2020, 3:35 PM

This has to do with "Soft Shadows". So it is the same problem described in T68594

Germano Cavalcante (mano-wii) closed this task as a duplicate of T68594: Eevee: Soft shadows causing flickering in animation and temporal AA in scenes.Jul 29 2020, 3:35 PM