With current git, the xscreensaver hack moebius renders the Moebius ribbon incorrectly. It looks different with the i915tex and r300 drivers but not correct with either. I tracked this down to http://gitweb.freedesktop.org/?p=mesa/mesa.git;a=commit;h=8dcfcad7a2598ba835930aac8f3fd6576e464c1c with git-bisect.
I've put in a fix which might fix this on r300. However, i915tex must suffer from another problem. (also note that some drivers, I'm sure at least for radeon and r200, rely on current values of _TriangleCaps in their driver state update callbacks, which will no longer work correctly and needs to be fixed. Neither r300 nor i915tex seem to be affected though.)
(In reply to comment #1) > I've put in a fix which might fix this on r300. However, i915tex must suffer > from another problem. Thanks. The ribbon's grid structure is back with r300, but it's still grey instead of red. i915tex is unchanged (red but incorrect texturing), as you suspected.
Mass version move, cvs -> git
Works fine now with the r300 driver.
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