Well, my inaugural attempts at GLSL coding pretty much went down in flames.
As this is a minor cosmetic issue for me, I decided to hack around it: I found a big, high rez image of film grain, cut 15 frames out of it, and layered it in.
It looks better and I have 1 less effect in the chain. Color me happy. <img src="{SMILIES_PATH}/icon_e_smile.gif" alt=":)" title="Smile">
If anyone else wants/needs to do this, here is the image I used:
http://byscuits.com/grain-tm400.png
Courtesy of this article:
http://www.prime-junta.net/pont/How_to/ ... tml?page=5
Still, it is a shame this basic effect doesn't work on mobile. Ashley