cc.brcosa.jxs and edges

hi,

msp user far from home here, well only two clicks really ;)
i'm doing some gl stuff for a performance (hmm tomorrow :) )
and i'd like some basic control to adjust to the projection.
jit.gl.shader with the cc.brcosa.jxs shader seems the best way, but i lose these nice illumuinated edges i had.
anyone know why and how to avoid this?

i just made the shader object and bound it to the context and jit.gl.render.

i put screenshots in attach.

thanks!

isjtar