[Bug 103047] lighting render issue with i965 on SKL+

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=103047

--- Comment #18 from Denis <denys.kostin at globallogic.com> ---
Hello guys. As we didn't have update here for a while, I tested the fix,
provided by by Kenneth with a test, provided by Danylo. I can say, that test
passes in drm-intel-next (commit exists there), and fails in my ubuntu kernel
4.15.
upd - test is still not added to master, so I applied it as a patch.

Results below:

>Linux and-Vostro-15-3568 4.17.0-rc3+
"spec at arb_provoking_vertex@arb-provoking-vertex-clipped-geometry-flatshading":{
"__type__":"TestResult",
"command":"/usr/local/lib/piglit/bin/arb-provoking-vertex-clipped-geometry-flatshading
-auto",
"environment":"PIGLIT_SOURCE_DIR=\"/usr/local/lib/piglit\"
PIGLIT_PLATFORM=\"mixed_glx_egl\"",
"err":"",
"out":"",
"result":"pass",
"returncode":0,
"subtests":{
"__type__":"Subtests"
},
"time":{
"start":1533032151.0282168,
"end":1533032151.1608405,
"__type__":"TimeAttribute"
},
"exception":null,
"traceback":null,
"dmesg":"",
"pid":[
29258
__________________________________________________________________________
>Linux and-Vostro-15-3568 4.15.0-29-generic
"spec at arb_provoking_vertex@arb-provoking-vertex-clipped-geometry-flatshading":{
"__type__":"TestResult",
"command":"/usr/local/lib/piglit/bin/arb-provoking-vertex-clipped-geometry-flatshading
-auto",
"environment":"PIGLIT_SOURCE_DIR=\"/usr/local/lib/piglit\"
PIGLIT_PLATFORM=\"mixed_glx_egl\"",
"err":"",
"out":"Probe color at (158,79)\n Expected: 1.000000 0.000000 0.000000\n
Observed: 0.000000 1.000000 0.000000\n",
"result":"fail",
"returncode":1,
"subtests":{
"__type__":"Subtests"
},
"time":{
"start":1533032579.1013076,
"end":1533032579.2158325,
"__type__":"TimeAttribute"
},
"exception":null,
"traceback":null,
"dmesg":"",
"pid":[
2069
]

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