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Some question about Mantra's motion blur


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Hi all!

Can Mantra call a shader several times when she is doing a motion blur? I mean if the surface color is changing in time from red to green I want to see a motion blur with gradient from red to green. I know it's impossible with RenderMan. Maybe Mantra is more clever? :lol:

But I made some tests and see that Mantra calls a surface shader once :(

I'm right?

And what about animated displacement?

P.S. Picture rendered with MentalRay. We can see a motion blur with gradient from blue to violet.

http://www.puppet.cgtalk.ru/mb.jpg

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Nope, mantra renders one sample and smears it. It can be potentially disastrously intensive for a renderer to execute the shader at every time sample.

However, a deeply hidden switch to do this would be great; and we've wanted it occaisionally.

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