I just open sourced ofxPostProcessing, it gives you an easy way of putting together a chain of GLSL post-processing effects. At the moment, it comes with the following effects (some ported from other sources and some original) that I’ll gradually add to over time:
More info here: www.neilmendoza.com/ofxpostprocessing
How do I set uniforms manualy?
(sorry for the necroposting)
When you create a post processing pass, you get a shared pointer to that RenderPass returned that you can keep a reference to somewhere in your code, for example:
kaleido = post.createPass<KaleidoscopePass>();
You can then call the getters and setters in the RenderPass to change variables, for example:
kaleido->setSegments(kaleido->getSegments() + 0.1);
When I get some time, I’m going to integrate ofParameter into the addon so that you can get an ofParameterGroup back from a RenderPass.
cool going to try that, brb
Thanks that works well, i just have to figure out what some variables do hehe.
was a bit lost trying to get the bloom shader with less range, i had to change some pivate stuff to public to be able to do so but it works.
Great add-on Neil. I’m using it for a project but can’t seem to use ofBackgroundGradient or use an ofImage background. Any ideas on how to do this?
Nice examples. I have the same question @jamesalliban has done.
How to preserve the background? for instance
ofBackgroundGradient(colorOne, colorTwo, OF_GRADIENT_CIRCULAR);
I tried post.getPasses().at(0)->setEnabled(false); before the background but ofcourse it doesn’t work.