Created attachment 135359 [details]
Glut test program for GL_POINT_SMOOTH

I'm working on a legacy system with an RV730, reports as a Radeon E4690, on
RHEL 6.9. The software I'm supporting tries to draw points on a globe (using
the NASA worldwind map software). On fglrx, these render correctly; on mesa,
they render as squares. Close as I can tell, r600 is not handling
GL_POINT_SMOOTH correctly.

I have tested on Fedora all the way to rawhide, which just built mesa 17.3 rc3
and the problem still persists. Attached is a simple glut test I threw together
and tested against swrast, r600, and nva5. Swrast and nva5 render a circle,
r600 renders a square.