Thanks for that! I made you a donation, not's much but hope helps in some way to continue doing more shaders <img src="{SMILIES_PATH}/icon_e_wink.gif" alt=";)" title="Wink"> .
I tested the code you sent me, i'm editing on shadertoy but can't get nothing that i like at the moment, i know is a wip but maybe can improve in some way.
Also i replied to your PM with lot of examples of shaders with glow i found on other site that also i'm trying to edit to see if can be useful to the glow effect for sprites.
Edit:
There is the codes for a Glow/Bloom effect in GLSL format:
https://gist.github.com/BlackBulletIV/4218802
https://facepunch.com/showthread.php?t=1078357