http://bugs.freedesktop.org/show_bug.cgi?id=23469





--- Comment #1 from Alex Deucher <[email protected]>  2009-08-24 07:20:39 PST ---
Cooper looked into this and found the root cause.  We currently set up the
vertex fetch as part of the vertex shader itself. So if the vertex format
changes we end up with the wrong vertex format in the fetch clause.  The fix is
to either recompile a new vertex shader every time the vertex format changes
or, preferably, switch using fetch shaders.  Then the vertex shader would only
need to be compiled once, and the fetch shader would be adjusted for the
changing vertex format.  This probably explains most of the remaining
corruption issues.


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