I’m just using coloured polygons (no textures) and whenever I have it enabled, everything’s a shade of grey.
It looks like the normals are fine, (since I pulled them straight out of the .ase file) but there’s none of the colour info!!
Please help!
You need to pass vertex colors with the glMaterial* functions.
You can also call
glEnable(GL_COLOR_MATERIAL);
glColorMaterial(GL_FRONT, GL_DIFFUSE);
to tell OpenGL to use the color in glColor as the diffuse color component for front facing triangles (in this example, other combinations can also be used).
I strongly recomend you read the chapter about Lightning in the Red Book .