render line on top of everything

i am using opengl to render a line, but unfortunatly i am not able to draw the line on top of everything else. the point is that i am using line to point and mark clearly objects in the scene. but sometimes it happens that line goes through other objects and you dont know where the line points. so drawing on top of everything else i think should solve the problem.

just is it possible?

thanks.

make another camera - and setup layers for example: set the line render object layer - drawFront make child camera and set that it renders only drawFront(in main camera disable this layer)

i dont know if i understood correctly

1.) create another camera
2.) make transform matches original camera (so it sees what other camera sees) - or make it a child camera of the original camera
3.) make layer “drawFront”
4.) disable this layer in the original camera
5.) enable only this layer to render newly created camera

is this correct?

i managed to do it this way, thank you very much!