More blend modes - AVS Forums

vanderphunck

29th July 2004 08:44 UTC

More blend modes
It would be cool to have more blend modes (especially for effect lists). This would avoid some buffer saves.

* A replace blend mode that is transparent for a specific color.

* A blend mode that first subtracts and then adds. (That would be transparent for black, semi transparent for grey and solid for white).

UnConeD

29th July 2004 09:12 UTC

Subtract-then-add = maximum blend ;).

vanderphunck

29th July 2004 10:43 UTC

Ahh yes ofcourse... :-)

Still there is room for some more complicated blend modes. (but maybe they are a little too exotic?)

Check:
http://www.digitalartform.com/imageArithmetic.htm

unripeLemon

30th July 2004 10:41 UTC

Yeh liike all the ones in paintshop pro and photoshop. Well not all of them, but some of them ;)

dirkdeftly

1st August 2004 06:52 UTC

|a-b| would be useful...it's fucking slow if you do it "by hand." i'd look up exactly how i did it before in order to demonstrate just how slow, but i just got out of about 12.5 hours of flying and not flying and i'm a bit tired

[Ishan]

1st August 2004 07:03 UTC

well yeah some of the PSP blend modes would be really cool. :D

TomyLobo

5th August 2004 21:36 UTC

|a-b| would be max(a-b,b-a)
or in other words:


+- <a>
+- EL(ignore/sub1)
|   +- <b>
+- EL(ignore/max)
    +- <a>
    +- EL(ignore/sub2)
        +- <b>

tell me if you have a better solution :)
btw i could write an ape that restores a buffer with that blend mode if anyone needs it... wouldnt be much work :)

PAK-9

6th August 2004 06:18 UTC

Your just desperate to make APE's aren't you

TomyLobo

7th August 2004 12:59 UTC

maybe... :)
here's the APE for absolute blending...
i'm gonna extend it to the other blend modes soon so stay tuned :)
this extension will be compatible to the presets made with this version
[edit]
uploaded it to my devart account:
http://www.deviantart.com/deviation/9561609/
[/edit]