No support for Alpha's in Motion Blur or DOF?

[Kokosing]

Apologies if this has been brought up before. I didn't find it when I searched.

Am I right in thinking that objects who's visibility is controlled by an alpha matte in their texture will not render correctly with vector motion blur or depth of field?

For instance, I created a plane and mapped a texture with a circular gradient in the alpha. Behind it, I placed another plane with no alpha.

From the multipass output, I can see that the plane with the circular alpha still appears as a square shape in both the vector motion blur and the depth output.

I then tried these renders as composites and noticed that essentially the same thing was happening. Even though the plane in the foreground appears as a circle, it's motion blur is applied as a square, and therefore onto the object behind it as well.

Is this correct? Is there a way around this?

Many, many thanks for any suggestions.

W

[Kokosing]

a way around it would be to shape your geometry to match your alpha.

I'd love to, but the alpha's a video file!

Cheers,

W

[basilisk]

I think we probably have to wait for the next release of Advanced Render to sort out these alpha problems. I am hoping this is now a top priority.

[EPICI]

Try with zBLUR or enDOFinare 2 plugINs that let you use motion blur and DoF together, but they also implement the use of alphas.. if I am not wrong.




EPICI

[Kokosing]

Try with zBLUR or enDOFinare 2 plugINs that let you use motion blur and DoF together, but they also implement the use of alphas.. if I am not wrong.

EPICI

Thanks, Epici. I didn't know these were out there. Obviously these handle the dof issue. Is there a way to use them for motion vectors? I couldn't think of one.

Thanks,

W

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