I render a red cube with glut. When I set the polygon mode to smooth mode by calling:
glEnable(GL_POLYGON_SMOOTH);
glEnable(GL_BLEND);
glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_DST_ALPHA);
I see black 'stiches' in the borders between the triangles the cube is made of.
Why is that and how can I avoid this artifact.
Many thanks,
Yossi