I show how to make a scan line effect using Affinity Photo's procedural texture filter.

Scan Lines

var v=vec2(rx,ry)*a/h; var col=vec3(r1,g1,b1); var d1=d*a/h; var d2=d1*g; var n1=b*perlinhcubic(v.x-h1*d1,f*d1,o,s); var o1=mapcui(e1,e2,osccr(v.y+n1-d2)); var o2=step(e,osc((v.y-d2)/c)); col*o1*o2+o2*j

I found a bug in the code, d2 should be:
var d2=d1*g;

instead of
var d2=d1*f;

I think that will work better.

Procedural Textures Playlist:

   • Procedural Textures with Affinity Photo  

The Procedural Texture filter and related information can be found on Affinity Photo's website:

https://affinity.help/photo/en-US.lpr...