Add a glow effect, and an effect that linearly mixes two sources (because glow needed...
[movit] / mix_effect.frag
1 vec4 FUNCNAME(vec2 tc) {
2         vec4 first = INPUT1(tc);
3         vec4 second = INPUT2(tc);
4         return vec4(PREFIX(strength_first)) * first + vec4(PREFIX(strength_second)) * second;
5 }