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What is RenderVelocities in GPU profile

5.7% 1.18ms RenderVelocities 160 draws 231774 prims 657568 verts

What does this do? And more importantly, can it be turned off?

Thanks in advance.

Product Version: UE 4.8 Preview
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asked May 20 '15 at 12:06 PM in Rendering

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Tarandus
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Yes, thanks. I just figured this out. It is actually possible to control a size threshold what goes into it under the motion blur setting. But doing so, makes the temporal AA look not so good. So I will not turn it off after all :)

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answered May 21 '15 at 03:08 PM

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Tarandus
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This renders the velocity map used as part of the motion blur.

If you turn of motion blur you should be able to get rid of it.

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answered May 20 '15 at 01:13 PM

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Tim.Leonard
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avatar image Tarandus May 20 '15 at 07:31 PM

That is what I thought it was, but turning motionblur off both in project settings and in commandline does not eliminate this.

avatar image Tim.Leonard May 21 '15 at 09:05 AM

It's also used for temporal-aa I believe, do you use that as well?

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