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Participant
November 2, 2022
Answered

How do get cast shadows to react with Turbulent Displace on a shape?

  • November 2, 2022
  • 3 replies
  • 558 views

Basically, I have a wiggly shape on a 3D layer but the cast shadows aren't wiggling with the shape. Video attached.

 

The yellow shape has a Turbulent Displace effect on it. The evolution has an expression "time*200"
Cast shadows are switched on. There's a spotlight layer with cast shadows enabled.

The cast shadow only keeps the shape's original contour and doesn't reflect the turbulent displacement. How do I fix this?

 

This topic has been closed for replies.
Correct answer Rick Gerard

You have a rendering order problem. Pre-compose the layer with Turbulent Displace moving all attributes, move the Turbulent Displace Effect to a 2D Adjustment layer above the original 3D layer, and return to the Main comp and Collapse transformations.  That should solve your rendering order problem. 

 

3 replies

Rick GerardCommunity ExpertCorrect answer
Community Expert
November 3, 2022

You have a rendering order problem. Pre-compose the layer with Turbulent Displace moving all attributes, move the Turbulent Displace Effect to a 2D Adjustment layer above the original 3D layer, and return to the Main comp and Collapse transformations.  That should solve your rendering order problem. 

 

Participant
November 3, 2022

Fantastic! Thank you so much, this worked perfectly.

I also found that simply pre-composing the shape layer with the Turbulent Displace applied to the shape works just as well.

Mylenium
Legend
November 2, 2022

Turn off the motion blur preview and check your hardware acceleration and/ or turn off Draft 3D. This looks like just another of those quadrillion bugs/ issues with GPU functions.

 

Mylenium 

Participant
November 2, 2022

Thank you for your suggestions, unfortunately the cast shadows are still static.

Mylenium
Legend
November 2, 2022

Any chance you're using the C4D renderer? If so, switching to the Standard renderer would be the first thing to do. Otherwise a screenshot of the timeline and composition might clarify things. Cropped screenshots or rendered clips don't really tell us much.

 

Mylenium 

Participant
November 2, 2022

I'm using the Classic 3D renderer.

Here is a screenshot of everything.