Introduction and New Composite Ops - Hard light and Soft Light

[Boudewijn Rempt]

On Friday 07 September 2007 03:41, Warren Baird wrote:

> That's good to hear...   One of the things I'd like to experiment with
> is in creating new and interesting composite modes...   Initially I'll
> probably do it by just recompiling krita --- but that isn't necessarily
> an ideal solution.   Has any thought been given to making composite ops
> plug ins? 

Yes, and we've gone a bit in that direction in 2.0, by making composite ops 
separate classes. It would be fairly simple to make composite ops plug-ins 
now.

> Or even a 'live' composite op, where users can specify 
> formulas interactively?    I'm guessing that an interpreted language
> would be way too slow, but maybe some kinda magic that compiled a shared
> object on the fly and linked it in...

Cool idea... I don't think the compiling-on-the-fly would work; but we could 
either smile winningly at our opengl guru's, Adrian and Tom, and ask them how 
hard it would be to allow glsl shaders for composite ops, or we could use one 
of the exising math packages to specify formulas that get executed. Or we 
could create a special kind of group node or filter node that processes two 
layers to produce one result and make this work with the existing glsl filter 
plugin.

-- 
Boudewijn Rempt 
http://www.valdyas.org/fading/index.cgi
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