How to fill polygon with different color than boundary?

Question

I need to draw a polygon that has the boundary lines with one color and fill the interior with another color. Is there an easy way to do this ? I currently draw two polygon

Answer 1

I think you should see this answer: fill and outline

first draw your triangle using glPolygonMode(GL_FRONT_AND_BACK,GL_FILL) and use your desired color. then draw the triangle again using glPolygonMode(GL_FRONT_AND_BACK,GL_LINE) using your outline color.