[gen9][iris][regression][bisected] flaky piglit tests
Issues started after mesa=293f2518 introduced:
Author: Alyssa Rosenzweig alyssa.rosenzweig@collabora.com Date: Thu Jul 9 13:42:25 2020 -0400
panfrost: Use Midgard-specific reloads
v2: Be more explicit about sampler types. Prefer the term "load" to
"resolve" to match VK convention. Generate shaders for MRT 8x. Blit
shader generation adds about 6ms to startup cost. We could cache thes.
shaders to disk if we needed to (or indeed, ship binaries).
v3: Fallback on u_blitter on Bifrost so Bifrost continues to work.
KHR_partial_update support is mostly no-oped on Bifrost now, but that's
okay for now - compositors are still functional.
v4: Specialize on multisample state as well to enable reloads of MSAA
textures. This requires 2x the shader variants, so I assume we're up to
12ms startup cost for generation. Annoying. Also fix interactions with
depth- or stencil-only clears of combined depth-stencil surfaces.
v5: Cache to the device (screen) instead of the context, reducing
duplicated work in apps that create many contexts (e.g. Chromium)
v6: Squash in KHR_partial_update cleanup to fix intermediate
regressions on a few tests.
Signed-off-by: Alyssa Rosenzweig <alyssa.rosenzweig@collabora.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/5824>
Tests fail on most CI runs after this point, but I haven't managed to reproduce the failure manually yet (still working on that, will post update when I do). The failing tests are:
piglit.spec.ext_packed_depth_stencil.fbo-clear-formats stencil piglit.spec.arb_depth_buffer_float.fbo-clear-formats stencil
Here's the output from https://mesa-ci.01.org/mesa_master/builds/21746/results/749751236:
stdout:
/tmp/build_root/m64/lib/piglit/bin/fbo-clear-formats GL_EXT_packed_depth_stencil stencil -auto -fbo
Using test set: GL_EXT_packed_depth_stencil
Testing GL_DEPTH_STENCIL
Probe color at (453,1)
Expected: 11 11 11
Observed: 0 0 0
Testing GL_DEPTH24_STENCIL8
stderr:
pid: [3822]
start time: 1594984341.6563964
end time: 1594984341.7408214