[jitter] "prepend texture" vs "jit.gl.texture"

> 
>>-question 3-
>>How can I reproduce the "lighten" and "screen" layer's filters normally used in photo-editing software? I use many GL layers with blend_enable activated.
>>
> 
> 
> You may want to render your scene to a texture and use jit.gl.slab to
> do some kind of scene post processing.
> 

...and take a look at the co.lighten.jxs and co.screen.jxs shader!

ciao
Marco