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Text+ and Blur in Fusion page and alpha weirdness

https://forum.blackmagicdesign.com/viewtopic.php?f=21&t=144244

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Text+ and Blur in Fusion page and alpha weirdness

PostPosted: Thu Jul 08, 2021 4:17 pm
by Paul Curtis
This is clearly just me not getting what is going on

Create Text+, open page in Fusion, add a defocus node and blur - looks great in fusion. Back on the timeline the blur is masked to the original alpha in the text.

In settings for the defocus node i have RGBA all checked, it should be blurring the alpha no?

So why is something so simple not working?

What am i missing?!

Kindest
Paul

Re: Text+ and Blur in Fusion page and alpha weirdness

PostPosted: Thu Jul 08, 2021 4:52 pm
by Hendrik Proosa
Possible reasons:
- alpha is actually not affected and possibly mediaout does a wrong additional premult. Check alpha channel on Fu side.
- edit page does not properly read alpha from Fu side and uses original alpha instead. One way to test is to transform the text and see if it is similar, masked with original alpha.

What does the manual say?