[PD] GEM: writing an arbitrary blend function (glsl)?
doktorp at mac.com
Fri Dec 25 22:42:45 CET 2009
You can do arbitrary blend modes in PD with GLSL as you suspect. take
a look at http://001.vade.info/?page_id=20 which has shaders for video
mixers (a through a+b to b blending, not just a+b) with most
photoshop blend modes.
You can use them verbatim with PD (Marius Schebella has some patches I
Feel free to use them as you wish, or hack them apart :)
On Dec 25, 2009, at 3:07 PM, Matteo Sisti Sette wrote:
> Matteo Sisti Sette escribió:
>> Basically, in the mentioned example you compute a resulting
>> gl_FracColor which is what is called the "source color".
> Well well, I am far from sure this is correct, this is just my
> understanding, and I don't even know whether for example lighting
> information is applied before or after this stage, but in the
> simplified case of a flat rectangle with no lighting, that becomes
> Matteo Sisti Sette
> matteosistisette at gmail.com
> Pd-list at iem.at mailing list
> UNSUBSCRIBE and account-management -> http://lists.puredata.info/listinfo/pd-list
More information about the Pd-list