Draw only a single color in GL of overlapping waves / GL render to matrix?

    Mar 15 2013 | 4:08 am
    Hey there, Two problems. One, I have this patch drawing the attack function and base waveform of a midi note. I want only their overlap to be drawn. Check the patch below:
    Second question, I figure if I had it in a matrix my job would be easier given that I don't know too much about GL. Just can't get it to render to matrix, why is that?