Phong lighting/ shading on 3d surface with texture map

I'm visualizing a 3D face using patch.m (actually patcht.m) or surface.m with a texture map on it (a .bmp of a person's face). It looks very realistic when I visualize it without lights. But, when I put lights on it (with the lights command), it has a "flat" appearance (i.e. very cubic/triangulated). The light isn't being interpolated properly across the faces so the lighting effect isn't smooth, as it should be with phong lighting.

So far I haven't found a way to set a phong light or use shading interp with a surface that has a texture map applied to it. Does anybody know how to do this? Any help will be very much appreciated!!

Answer 1

[Walter Roberson]

http://www.mathworks.com/help/techdoc/ref/figure_props.html

OpenGL does not support the phong value for the FaceLighting and EdgeLighting properties of surfaces and patches.

Perhaps the above is affecting you ?