Filter Forge - Angular Gradient Snippet by Sphinx.

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ronviers

lighter/generalist

Posts: 4456
Filters: 35

Angular Gradient Snippet by Sphinx.
http://www.filterforge.com/filters/5029.html

@ronviers

Posted: January 23, 2008 6:52 am

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ronviers

lighter/generalist

Posts: 4456
Filters: 35

Excellent work Sphinx.. smile:)

This was a pet project of mine for a while but never could nail it down myself so I had to move on. When I finally gave up and peeked to see how they did it I was glad I did because I was not even close. I had curves out the ass trying to get it done. I never even considered blend modes. Btw, some credit should go to byRÃ´ as well for the original solution.
Here are a couple of classic threads relating to the original work.

http://www.filterforge.com/forum/read...#nav_start

http://www.filterforge.com/forum/read...essage2618

Thanks smile:)

@ronviers

Posted: January 23, 2008 6:55 am

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Sphinx.

Filter Optimizer

Posts: 1750
Filters: 39

Ahh right! Updated credits and resubmitted, thanks smile:)

Njyldgarkn init/prepare process x no. of render blocks x no. of passes

Posted: January 23, 2008 7:07 am

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Kraellin

Kraellin

Posts: 12749
Filters: 99

ok, i dont get it. how is this different from the one(s) that came before like this?

If wishes were horses... there'd be a whole lot of horse crap to clean up!

Craig

Posted: January 23, 2008 2:21 pm

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Sphinx.

Filter Optimizer

Posts: 1750
Filters: 39

Quote
Kraellin wrote: ok, i dont get it. how is this different from the one(s) that came before like this?

Its all about how it "fakes" the angular gradient. None of the solutions I've seen so far (including my own) are perfect in the gradient ramp curvature (do a difference blend + levels white point down check to see the visual difference). My version is a tiny bit faster, its easier to control the curvature approximation (where the gain goes in) and the curvature is a little bit closer to the real curvature (not much though).

Njyldgarkn init/prepare process x no. of render blocks x no. of passes

Posted: January 23, 2008 3:23 pm

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Kraellin

Kraellin

Posts: 12749
Filters: 99

ah, ok. thanks, sphinx smile:)

If wishes were horses... there'd be a whole lot of horse crap to clean up!

Craig

Posted: January 23, 2008 3:55 pm

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