Mesa (master): ci/vc4: Skip VS dynamic loops tests that cause GPU hangs.

[GitLab Mirror]

Module: Mesa
Branch: master
Commit: bc3225272aeb363ba03cdd3319081de1239a0521
URL:    http://cgit.freedesktop.org/mesa/mesa/commit/?id=bc3225272aeb363ba03cdd3319081de1239a0521

Author: Eric Anholt <eric at anholt.net>
Date:   Tue Dec  8 15:18:34 2020 -0800

ci/vc4: Skip VS dynamic loops tests that cause GPU hangs.

We've been getting spurious failures from the new VC4 CI, which I believe
are due to this set of tests (which have been showing up along with a GPU
hang report in the list of flaky tests in the failing jobs).  This was a
known issue I had in vc4.

Reviewed-by: Jose Maria Casanova Crespo <jmcasanova at igalia.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/7998>

---

 .gitlab-ci/deqp-vc4-rpi3-skips.txt | 11 +++++++++++
 1 file changed, 11 insertions(+)

diff --git a/.gitlab-ci/deqp-vc4-rpi3-skips.txt b/.gitlab-ci/deqp-vc4-rpi3-skips.txt
index 1e8718abbae..759aaff42ea 100644
--- a/.gitlab-ci/deqp-vc4-rpi3-skips.txt
+++ b/.gitlab-ci/deqp-vc4-rpi3-skips.txt
@@ -15,3 +15,14 @@ dEQP-GLES2.functional.fragment_ops.scissor.outside_render_line
 # These are very slow
 dEQP-GLES2.functional.uniform_api.random.3
 dEQP-GLES2.functional.uniform_api.random.79
+
+# Conformance issue: VC4 needs dynamic loops in the VS to cause a
+# shader link failure.
+#
+# The issue is that the HW doesn't have an exec mask at dispatch
+# for the VS, so the shouldn't-be-exec channels have undefined
+# contents and may cause infinite loops, leading to GPU hangs.  The
+# process of GPU hang reset causes flakes in whatever other jobs are
+# running simultaneously, so we can't even leave these in the flakes
+# list for tracking.
+dEQP-GLES2.functional.shaders.loops.*dynamic.*vertex