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Maniphest T33554

Full render (f12) "clears" dynamic paint displacement and renders "flat"
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Description

All recent builds I have tried (including the daily build as of 12-15-12)

Open the attached Blend

Play the animation and pause at a displaced frame.
F12 to render.

Note" viewport render in Cycles will work, but either renderer will "clear" the displacement in a full render.

System info file also attached.

Event Timeline

Phil Leavens (pappy) edited a custom field.Dec 15 2012, 10:40 PM
Phil Leavens (pappy) attached 1 file(s): F25249: paint_displace_render.blend.
Phil Leavens (pappy) attached 1 file(s): F25251: system-info.txt.
Brecht Van Lommel (brecht) added a comment.Dec 16 2012, 12:04 AM

If you set the subsurf levels the same for the viewport and render, it will work. The problem is that the dynamic paint is baked for a specific mesh resolution. Maybe there should be a warning about this, there's a similar case with cloth and softbody that is confusing;

Phil Leavens (pappy) added a comment.Dec 16 2012, 1:48 AM

Yes, a warning would be nice.

Ton Roosendaal (ton) added a comment.Dec 16 2012, 3:40 PM

Shall we ask Miika?

Miika Hamalainen (miikah) added a comment.Dec 16 2012, 5:02 PM

Simulation is only calculated for for single mesh "resolution", so if mesh structure changes at some point (in this case when rendering with higher subdivision level) the simulation is reset.

This seems to be a common cause of confusion for cloth, softbody and dynamic paint modifiers, so some kind of warning would indeed be nice until those modifiers are updated with multi-resolution bake support.

Anyway, since this isn't actual bug I'm closing the report. :/

Miika Hamalainen (miikah) changed the task status from Unknown Status to Archived.Dec 16 2012, 5:02 PM