[Piglit] [PATCH 7/7] Add occlusion-query tests for various meta operations.

Carl Worth cworth at cworth.org
Fri Jan 11 12:37:36 PST 2013

Eric Anholt <eric at anholt.net> writes:
> Do not trust anything related to bitmap and OQs in any code path we have
> right now.  Looking at the GL 3.0 spec section 3.8:
> "Bitmaps are rectangles of zeros and ones specifying a particular
> pattern of fragments to be produced. Each of these fragments has the
> same associated data. These data are those associated with the current
> raster position."
> So I think the answer should be OQ incrementing per bit set in your
> bitmap.

Thanks. That's a sufficient specification citation for me to be able to
write a more precise test. (I already have the test failing for the
current OQ result of zero for glBitmap, but now I can make it look for the
correct number before it can pass.)

It's the other meta-operations that are currently giving non-zero OQ
results where I'll see if the current results look sane enough for me to
codify into the tests.

And I'm assuming that the bug with OQs around glBitmap is not something
high priority for now. (So we can add a failing test case to piglit here
and fix it "sometime" in the future...)


carl.d.worth at intel.com
-------------- next part --------------
A non-text attachment was scrubbed...
Name: not available
Type: application/pgp-signature
Size: 197 bytes
Desc: not available
URL: <http://lists.freedesktop.org/archives/piglit/attachments/20130111/73c88c28/attachment.pgp>

More information about the Piglit mailing list