Drawing outline of a display list

I have a display list that draws several objects. I specify the colour for each object in the display list. I wanted to draw an outline of the objects using 1 solid colour for all objects - which is a problem because I already specify the colour in the display list.

Any simple solutions?

I could have another display list that draws the same objects without colour - but that’s another display list to make. I could also write a fragment shader that outputs a colour of my choice. These are kind of a pain.


Use one display list per object.