This adds a test to ensure that the wl_shm formats YUV420, NV12 and YUYV
are decoded and converted to RGB correctly in GL-renderer.
The test deliberately uses a 256 x 256 test image so that effects from
width vs. pitch vs. stride cannot be observed, and row padding is zero.
Also padding between planes is zero. Attempting to use a test image with
less "round" dimensions lead to stride mismatch in GL-renderer, likely
due to GL_UNPACK_ALIGNMENT being left at value 4. It is unclear if YUV
wl_shm buffers' row stride needs to be aligned to 4 bytes or not, so I
did not pursue fixing it. GL-renderer seems to be confusing width, pitch
and stride even further, and not e.g. allow padding with ARGB buffers.
See also: https://gitlab.freedesktop.org/wayland/weston/-/issues/354
Furthermore, the test arranges so that each 2x2 pixel block has the same
color. This avoids having to consider chroma siting when sub-sampling.
This way all the test cases can use the same reference image.
The source image chocolate-cake.png is taken and copyright by Pekka
Paalanen, hereby licensed as
http://creativecommons.org/licenses/by-sa/4.0/ .
Signed-off-by: Pekka Paalanen <pekka.paalanen@collabora.com>
In anticipation of invasive future work on color management, add an
alpha blending test to make sure we don't break alpha blending.
The idea for doing a monotonicity test came from glennk on #dri-devel in
Freenode IRC.
Signed-off-by: Pekka Paalanen <pekka.paalanen@collabora.com>
This test ensures that
"pixman-renderer: half-fix bilinear sampling on edges"
keeps on working.
Unlike in the original report
https://gitlab.freedesktop.org/wayland/weston/issues/373, here we use buffer
scale 2 instead of output scale 2 to trigger bilinear filter. The effect is the
same, the actual resulting image in the failing case is just a little
different. This is so that it will be easy to add more viewport screenshooting
tests in this program in the future.
Signed-off-by: Pekka Paalanen <pekka.paalanen@collabora.com>
This patch continues the buffer and output transforms testing by iterating
through a representative selection of buffer transforms and scales.
For more details, see the previous patch "tests: add output transform tests".
https://gitlab.freedesktop.org/wayland/weston/issues/52
Signed-off-by: Pekka Paalanen <pekka.paalanen@collabora.com>
This goes through all output transforms with two different buffer transforms
and verifies the visual output against reference images.
This commit introduces a new test input image 'basic-test-card.png'. It is a
small image with deliberately odd and indivisible dimensions to provoke bad
assumptions about image sizes. It contains red, green and blue areas which are
actually text that makes it very obvious if you have e.g. color channels
swapped. It has a white thick circle to highlight aspect ratio issues, and an
orange cross to show a mixed color. The white border is for contrast and a 1px
wide detail. The whole design makes it clear if the image happens to be rotated
or flipped in any way.
The image has one pixel wide transparent border so that bilinear sampling
filter near the edges of the image would produce the same colors with both
Pixman- and GL-renderers which handle the out-of-image samples fundamentally
differently: Pixman assumes (0, 0, 0, 0) samples outside of the image, while
GL-renderer clamps sample coordinates to the edge essentially repeating the
edge pixels.
It would have been "easy" to create a full matrix of
every output scale & transform x every buffer scale & transform, but that
would have resulted in 2 renderers * 8 output transforms * 3 output scales *
8 buffer transforms * 3 buffer scales = 1152 test cases that would have all
ran strictly serially because our test harness has no parallelism inside one
test program. That would have been slow to run, and need a lot more reference
images too.
Instead, I chose to iterate separately through all output scales & transforms
(this patch) and all buffer scales & transforms (next patch). This limits the
number of test cases in this patch to 56, and allows the two test programs to
run in parallel.
I did not even pick all possible scale & transform combinations here, but just
what I think is a representative sub-set to hopefully exercise all the code
paths.
https://gitlab.freedesktop.org/wayland/weston/issues/52
Signed-off-by: Pekka Paalanen <pekka.paalanen@collabora.com>
This is marked as a FAIL_TEST, because the last image comparison fails
due to a bug in Weston.
Jointly authored by Pekka and Emilio.
Signed-off-by: Pekka Paalanen <pekka.paalanen@collabora.co.uk>
Signed-off-by: Emilio Pozuelo Monfort <emilio.pozuelo@collabora.co.uk>
Reviewed-by: Micah Fedke <micah.fedke@collabora.co.uk>
[Pekka: move weston-tests-env as terminator to EXTRA_DIST, change
ok/FAIL to PASS/FAIL, write diff image only on fail.]
Acked-by: Quentin Glidic <sardemff7+git@sardemff7.net>
We no longer have a race with shell startup because we create our own
colored surface and check that it's properly drawn.
Signed-off-by: Derek Foreman <derekf@osg.samsung.com>
Tested-by: Pekka Paalanen <pekka.paalanen@collabora.co.uk>
This also serves as a proof of concept of the screen capture
functionality and as a demo for snapshot-based rendering verification.
Implements screenshot saving clientside in the test itself.
This also demonstrates use of test-specific configuration files, in this
case to disable fadein animations and background images.
Signed-off-by: Bryce Harrington <bryce@osg.samsung.com>
Reviewed-By: Derek Foreman <derekf@osg.samsung.com>
Pekka Paalanen
Riku Viitanen
Pekka Paalanen
Derek Foreman
Bryce Harrington