ci: Disable shader cache on vulkan CI runs.

I found it to be flaky in freedreno CI, and tracked down the issue to
parallel-deqp-runner needing to manage the shader cache
(https://gitlab.freedesktop.org/mesa/parallel-deqp-runner/-/merge_requests/13).
Until we fix that in the runner, disable it.  This should matter less now
that we prebuild the SPIRV, though.

Reviewed-by: Bas Nieuwenhuizen <bas@basnieuwenhuizen.nl>
Reviewed-by: Christian Gmeiner <christian.gmeiner@gmail.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/5266>

diff --git a/.gitlab-ci/deqp-runner.sh b/.gitlab-ci/deqp-runner.sh
index bcaa5d3..b9f14fe 100755 (executable)
--- a/.gitlab-ci/deqp-runner.sh
+++ b/.gitlab-ci/deqp-runner.sh
@@ -7,6 +7,11 @@ DEQP_OPTIONS="$DEQP_OPTIONS --deqp-surface-type=pbuffer"
 DEQP_OPTIONS="$DEQP_OPTIONS --deqp-gl-config-name=rgba8888d24s8ms0"
 DEQP_OPTIONS="$DEQP_OPTIONS --deqp-visibility=hidden"
 
+# deqp's shader cache (for vulkan) is not multiprocess safe for a common
+# filename, see:
+# https://gitlab.freedesktop.org/mesa/parallel-deqp-runner/-/merge_requests/13
+DEQP_OPTIONS="$DEQP_OPTIONS --deqp-shadercache=disable"
+
 if [ -z "$DEQP_VER" ]; then
    echo 'DEQP_VER must be set to something like "gles2", "gles31" or "vk" for the test run'
    exit 1