Perspective not corrected

[skrat]

I checked out your code, adapted to my purposes, and noticed that the perspective doesn't seem to be corrected in the vertex shader. The lines further away from camera are indeed getting thinner. I then cloned your repo, played a bit with the view and projection matrices, and noticed that it does the same thing. Any idea what's going on and how to correct for perspective and have lines with constant width?

Also, my code is here https://github.com/skrat/webgl-line-rendering

[skrat]

All right in case anyone ever needs this:

// vertex shader
float t = u_thickness*currentProjected.w;

// fragment, if you do your own anti-aliasing in fragment shader
float t = u_thickness/gl_FragCoord.w;