coordinate generation. Original code by Roland Schiedegger, with changes by
myself. While here, ensure that the swtcl path does tnl_install_attrs enough
when fog/specular are being (en/dis)abled.
Notable effects:
- projtex test works with TCL and is closer with swtcl (Bugzilla #1461)
- 8/9 squares work in texgenmix instead of 3.
- texcyl "reflect" mode works (GL_SPHERE_MAP is now a fallback -- unclear if the
hardware can actually support it).
- flickering in doom3 replaced by just plain darkness.
- blocktube fixed (Bugzilla #984)
- fixes stex3d
Eric Anholt
b1ebd306bf