http://bugs.freedesktop.org/show_bug.cgi?id=11594





------- Comment #14 from [EMAIL PROTECTED]  2007-07-16 05:24 PST -------
(In reply to comment #13)
> This means the position invariant will work
> correctly, but the user will still get an assertion if they create a
> non-position invariant program that does not write result.position.  I believe
> this is the correct behaviour, as (iirc) result.position must be written for
> the program to be valid.
No, this is not true. Programs are indeed valid if they don't write position
(and even if they were not abort would not be an option). The spec explicitly
mentions this, though results are undefined. So either drop to swrast if the
driver can't handle it at all, or just write that position and be done with it
if it works well enough, as results are undefined it must just not lock up
doesn't really matter how results turn out...


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