[Bug 92578] [BDW HSW dEQP] deqp-gles2 functional.texture.vertex.cube.filtering is failing in 4 of 36 test cases

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=92578

Kenneth Graunke <kenneth at whitecape.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|REOPENED                    |RESOLVED
         Resolution|---                         |WONTFIX

--- Comment #9 from Kenneth Graunke <kenneth at whitecape.org> ---
I suspect this is an issue with the test.  GLES 3.0 enabled seamless cube map
filtering by default, while GLES 2.0 didn't.  But since GLES 2.0 can be legally
and silently promoted to 3.0, it's basically undefined whether it's enabled. 
There are comments in some of the tests that they try and avoid corner/edge
pixels that would hit this undefined behavior, but...the failures are all a
single pixel at the very corner.

Notably, these two tests begin to pass if we disable seamless cubemap filtering
(which we can't reasonably do):

dEQP-GLES2.functional.texture.vertex.cube.filtering.linear_mipmap_linear_nearest_clamp
dEQP-GLES2.functional.texture.vertex.cube.filtering.linear_mipmap_linear_nearest_mirror

These two continue failing:

dEQP-GLES2.functional.texture.vertex.cube.filtering.linear_mipmap_linear_nearest_repeat
dEQP-GLES2.functional.texture.vertex.cube.filtering.linear_mipmap_linear_linear_repeat

Notably, i965 passes the dEQP-GLES3 versions of the same tests.  I'm not aware
of us doing something different for GLES2 and GLES3, so my guess is some bug
fix to the tests didn't get copy and pasted back to the older GLES2 test.

More importantly, these are not in the Android CTS mustpass list, which means
Google doesn't require them.  If Google doesn't think it's reasonable to
require graphics vendors to pass these tests, and neither does Khronos, I'm
inclined to agree and not spend any effort fixing them.  I think you should
change how you're running the test suite to only run tests in the mustpass
list.

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