Individual struct fields are inconvenient to index into, yet most
operations on a color just repeat the same for each of RGB channel.
Being able to index into RGB avoids repeating the same code for each
channel.
Alpha channel is left as separate, since it is almost never handled the
same as RGB.
The union keeps the old .r, .g and .b addressing working. The static
asserts ensure the aliasing is correct.
For demonstration, two simple functions in color_util.c are converted.
Unfortunately initializers need to be corrected everywhere. Field .a is
not explicitly initialized because it is unused in these cases.
This change should make code easier to read.
This change requires gnu99 or c11 standard. gnu99 is already the default
in top-level meson.build.
Signed-off-by: Pekka Paalanen <pekka.paalanen@collabora.com>
Given that the test-helper code relies on the screenshooter protocol,
make sure it's available for us to build, and the dependency ensures we
build in order.
Fixes: #588
Signed-off-by: Daniel Stone <daniels@collabora.com>
In certain situations these clients crash a lot due to the low
buffer limit. Four buffers is also what EGL allows without blocking
and what is arguably the upper limit of what a compositor should
demand.
Signed-off-by: Robert Mader <robert.mader@collabora.com>
1. Use fixture_setup to set the generated by LCMS output profile based on
given chromaticities and white points. The following list of well known
chromaticities:
- sRGB
- adobe RGB
- bt2020
and white point is D65. Use INTENT_ABSOLUTE_COLORIMETRIC to avoid BPC.
Input profile is always sRGB and it is used internally by Weston as
stock profile.
2. Use these hardcoded matrixes as part of pipeline 1DLUT->3x3->1DLUT.
The diagnostic code to retrieve the transform matrix is availble into
test in the comments. The conversion matrixes generated for the
following cases:
- sRGB to sRGB (unity)
- sRGB to adobeRGB
- sRGB to BT2020
3. Compare GPU shaders(gl texture3D) vs manual pipeline calculation
Use different max tolerable error per transform.
There are comments how number of points in 3DLUT is related to tolerance.
Tolerance depends more on the 1D LUT used for the inv EOTF than
the tested 3D LUT size: 9x9x9, 17x17x17, 33x33x33, 127x127x127.
4. Enable build matrix-shaper test if color-management-lcms is enabled.
Co-authored-by: Pekka Paalanen <pekka.paalanen@collabora.com>
Signed-off-by: Vitaly Prosyak <vitaly.prosyak@amd.com>
Use 3D LUT for color mapping.
For category CMLCMS_CATEGORY_INPUT_TO_BLEND use transform which has
3 profiles: input, output and light linearizing transfer function.
For category CMLCMS_CATEGORY_INPUT_TO_OUTPUT use input and output profiles +VCGT.
For category CMLCMS_CATEGORY_BLEND_TO_OUTPUT use output inverse EOTF + VCGT.
Co-authored-by: Pekka Paalanen <pekka.paalanen@collabora.com>
Signed-off-by: Vitaly Prosyak <vitaly.prosyak@amd.com>
Graeme sketched a linearization method there:
https://lists.freedesktop.org/archives/wayland-devel/2019-March/040171.html
Sebastian prototyped there:
https://gitlab.freedesktop.org/wayland/wayland-protocols/-/merge_requests/14/commits
Thanks to Pekka for great simplifications in implementation, like the xyz_dot_prod()
Quote: "should help untangle lots of the multiplications and summations by saying
we are computing dot products, etc".
The approach was validated using matrix-shaper and cLUT type of profiles.
If profile is matrix-shaper type then an optimization is applied.
The extracted EOTF is inverted and concatenated with VCGT, if it is availible.
Introduce function cmlcms_reasonable_1D_points which would be shared between
linearization method and number of points in 1DLUT for the transform.
Co-authored-by: Pekka Paalanen <pekka.paalanen@collabora.com>
Co-authored-by: Sebastian Wick <sebastian@sebastianwick.net>
Signed-off-by: Vitaly Prosyak <vitaly.prosyak@amd.com>
Add to search parameter cmlcms_category, input and output profiles,
and render intent for output which would be used for both profiles.
Add common function setup_search_param for every category.
Signed-off-by: Vitaly Prosyak <vitaly.prosyak@amd.com>
The stock profile would be used when client or output
do not provide any profile or unaware of color management.
Signed-off-by: Vitaly Prosyak <vitaly.prosyak@amd.com>
1. The cmlcms_category is used to identify the purpose of transform:
- CMLCMS_CATEGORY_INPUT_TO_BLEND
- CMLCMS_CATEGORY_BLEND_TO_OUTPUT
- CMLCMS_CATEGORY_INPUT_TO_OUTPUT
2. Added following fields to cmlcms_color_profile:
- output_eotf - If the profile does support being an output profile and it
is used as an output then this field represents a light linearizing
transfer function and it can not be null. The field is null only if
the profile is not usable as an output profile. The field is set when
cmlcms_color_profile is created.
- vcgt - VCGT tag cached from output profile, it could be null if not exist
- output_inv_eotf_vcgt - if the profile does support being an output profile and it
is used as an output then this field represents a concatenation of inverse
EOTF + VCGT, if the tag exists and it can not be null.
3. Added field cmsHTRANSFORM to cmlcms_color_transform.
It is used to store LCMS optimized pipeline.
Signed-off-by: Vitaly Prosyak <vitaly.prosyak@amd.com>
The following GL extensions provide support for shaders CM:
-GL_OES_texture_float_linear makes GL_RGB32F linear filterable.
-GL ES 3.0 provides Texture3D support in GL API.
-GL_OES_texture_3D provides sampler3D support in ESSL 1.00.
If abovesaid is supported then renderer sets flag WESTON_CAP_COLOR_OPS
which means that all fields in struct weston_color_transform are
supported, for example, 1DLUT and 3DLUT.
Use GL_OES_texture_3D to implement 3DLUT function which
uses trilinear interpolation for pixel processing or bypass as is.
Quote from https://nick-shaw.github.io/cinematiccolor/luts-and-transforms.html
"3D LUTs have long been embraced by color scientists and are one of
the tools commonly used for gamut mapping. In fact, 3D LUTs are used
within ICC profiles to model the complex device behaviors necessary
for accurate color image reproduction".
Quote from https://developer.nvidia.com/gpugems/gpugems2/part-iii-high-quality-rendering/
chapter-24-using-lookup-tables-accelerate-color
is about interpolation: "By generating intermediate results based
on a weighted average of the eight corners of the bounding cube,
this algorithm is typically sufficient for color processing,
and it is implemented in graphics hardware".
Signed-off-by: Vitaly Prosyak <vitaly.prosyak@amd.com>
Introduce shader color mapping identity and 3D LUT.
Shader requirements struct uses union for color mapping
to prepare the place for 3x3 matrix.
Signed-off-by: Vitaly Prosyak <vitaly.prosyak@amd.com>
Introduce 3D LUT definition as part of Weston
color transform struct. A 3D LUT is a LUT containing
entries for each possible RGB triplets.
Co-authored-by: Pekka Paalanen <pekka.paalanen@collabora.com>
Signed-off-by: Vitaly Prosyak <vitaly.prosyak@amd.com>
Add VGEM to the Linux image that runs in the CI. There are tests that we
plan to add in the future that need this.
This brings a complication, as we already have VKMS in the image. The
order in which DRM devices are loaded is not always the same, so the
node they receive is non-deterministic. Until now we were sure that VKMS
(the virtual device we use to run the DRM-backend tests in the CI) would
be in "/dev/dri/card0", but now we can't be sure. To deal with this
problem we find the node of each device using a one-liner shell script.
This commit also updates the documentation section that describes
specificities of DRM-backend tests in our test suite.
Signed-off-by: Leandro Ribeiro <leandro.ribeiro@collabora.com>
Make it slightly easier to disambiguate clients when we log the protocol
stream from the server side.
Signed-off-by: Daniel Stone <daniels@collabora.com>
Name the seat created by the screen share plugin "screen-share" instead of
"default", to make it easier to recognize. No functional change intended.
Signed-off-by: Marek Vasut <marex@denx.de>
Test different scenarios where child subsurfaces of unmapped
subsurfaces would get mapped. This test will fail in various
ways without the commit
"libweston/compositor: Do not map subsurfaces without buffer"
Also try to test potential regressions of that patch.
Signed-off-by: Robert Mader <robert.mader@collabora.com>
We can end in `subsurface_committed()` in different scenarios
without the surface having an attached buffer. While setting
the mapped state to `true` in that case doesn't matter for
that (sub)surface itself, it triggers its own child subsurfaces
to get mapped when they shouldn't.
Closes https://gitlab.freedesktop.org/wayland/weston/-/issues/426
Signed-off-by: Robert Mader <robert.mader@collabora.com>
With commit 'compositor: Remove desktop zoom' weston_output_zoom was removed
from weston_output thus needing a libweston major bump.
Signed-off-by: Marius Vlad <marius.vlad@collabora.com>
Suggested-by: Pekka Paalanen <pekka.paalanen@collabora.com>
This isn't about opening new windows but the start-up animation
that desktop-shell does when it is being brought on/started.
Signed-off-by: Marius Vlad <marius.vlad@collabora.com>
Users should rely on wayland-info from wayland-utils [1] instead.
We've been printing a deprecation since 85382d394a ("clients:
deprecate weston-info"), so users should be aware already.
[1]: https://gitlab.freedesktop.org/wayland/wayland-utils/
Signed-off-by: Simon Ser <contact@emersion.fr>
Many years ago (2014) systemd-logind was brought into libsystemd.
We've supported old versions of systemd-logind ever since.
Let's remove support for old versions of systemd-logind before the
merge for a tiny code simplification.
Signed-off-by: Derek Foreman <derek.foreman@collabora.com>
Zoom is a neat trick, but in its current form it's very hard to test
and maintain.
It also causes output damage to scale outside of the output's boundaries,
which leads to an extra clipping step that's only necessary when zoom
is enabled.
Remove it to simplify desktop-shell and compositor.
Signed-off-by: Derek Foreman <derek.foreman@collabora.com>
Changing `wl_surface_damage()` to `wl_surface_damage_buffer()`
should not have an effect on the existing tests.
The new test will fail without the commit
"libweston/compositor: Cache buffer damage for synced subsurfaces"
Signed-off-by: Robert Mader <robert.mader@collabora.com>
The spec states:
> Because buffer transformation changes and damage requests may be
> interleaved in the protocol stream, it is impossible to determine
> the actual mapping between surface and buffer damage until
> wl_surface.commit time. Therefore, compositors wishing to take both
> kinds of damage into account will have to accumulate damage from the
> two requests separately and only transform from one to the other after
> receiving the wl_surface.commit.
For subsurfaces in sync mode, arguably the same is the case until the
cached state gets applied eventually. Thus, in order to keep complexity
to a sane level, just accumulate buffer damage and convert it only
when the cached state gets applied.
This mirrors how other compositors like Mutter implement cached damage
and what the spec arguably should demand.
Closes https://gitlab.freedesktop.org/wayland/weston/-/issues/446
Signed-off-by: Robert Mader <robert.mader@collabora.com>
In multiple output cases, finding the succesor from the inactive layer
might result in picking the wrong view when there are multiple views
being stacked in the inactive layer. This adds two additional checks to
favor views on the same output as the one being destroyed/removed.
Signed-off-by: Marius Vlad <marius.vlad@collabora.com>
This adds an additional check to make sure the current focus surface
is on the same output as the surface that is going to be activated.
This is necessary in order to avoid placing the currently focused one in
the inactive layer, which shouldn't happen in situations where the new
surface is going to be placed on a different output than the currently
focused one.
Signed-off-by: Marius Vlad <marius.vlad@collabora.com>
Some applications would set-up the app_id after the initial commit
(without a buffer) which is too late to correctly assign the application
to the corresponding output set-up in the configuration file.
This patch fixes that by checking one more time, after a buffer has been
attached, if indeed there's an output with an app_id set.
Fixes: #469
Signed-off-by: Marius Vlad <marius.vlad@collabora.com>
These formats are useful because they are often easier to produce
on CPU than half-float formats, and abgr16161616 has both >= 10bpc
color channels and adequate alpha, unlike abgr2101010.
The 16-bpc textures created from buffers with these formats require
the GL_EXT_texture_norm16 extension.
As WL_SHM_FORMAT_ABGR16161616 was introduced in libwayland 1.20,
update Weston's build requirements and CI.
The formats also needed to be registered in the pixel format table,
and defined in a fallback path if recent libdrm is not available.
Signed-off-by: Manuel Stoeckl <code@mstoeckl.com>
Specifically log if there were no suitable planes for us to use, or if
we tried to place it on a plane but were told no by the kernel.
Signed-off-by: Daniel Stone <daniels@collabora.com>
There's no real reason for these to be separate now that the eligibility
checks have been moved up so we don't call them unless it makes sense.
Signed-off-by: Daniel Stone <daniels@collabora.com>
We just copy the SHM buffer straight into a separately-allocated GBM BO,
so no need to take a reference on the buffer itself or keep it from
being released.
All drm_output_try_view_on_plane really does at this point is to call
the prepare_*_view function for the requisite plane type, and take a ref
on the weston_buffer from the client. Given that we don't need to keep
the client buffer alive, we can short-circuit
drm_output_try_view_on_plane, and instead just call
drm_output_prepare_cursor_view directly when we have a cursor plane.
This also makes it easier to just remove drm_output_try_view_on_plane in
following patches when we merge the overlay/scanout plane path into one.
Doing so gives us two clearly-separated paths: one for copying a SHM
client buffer into a cursor, and another for directly scanning out
client content.
Signed-off-by: Daniel Stone <daniels@collabora.com>
At some point this got hobbled, such that NO_PLANES and
NO_PLANES_ACCEPTED became the same thing, so we can just check if the
returned plane_state is NULL or not.
Signed-off-by: Daniel Stone <daniels@collabora.com>
For views which cover the entire output, we always attempt to place them
on the primary plane, to avoid a situation where we place a fullscreen
view into an overlay plane and then have to disable the primary plane,
which doesn't always work.
Move this check earlier, so we don't consider overlay planes to be
candidates for fullscreen views. This check should be changed in future
to only filter for opaque views, but that's for another time.
Signed-off-by: Daniel Stone <daniels@collabora.com>
We shouldn't get down into trying to place a view on a cursor plane if
these checks are not met, so change them to asserts rather than early
returns.
Signed-off-by: Daniel Stone <daniels@collabora.com>
When we introduced support for variable zpos, we did so by filtering the
list of acceptable planes and then creating a separate zpos-ordered
list. Now that the planes are already zpos-sorted in the backend list,
and we have more early filtering, we can replace this with a single
plane-list walk.
Signed-off-by: Daniel Stone <daniels@collabora.com>
For better or worse, cursor planes can only be used by uploaded SHM
buffers right now, so ignore them when we're calculating the acceptable
plane mask for client dmabufs.
Signed-off-by: Daniel Stone <daniels@collabora.com>
Pekka Paalanen
Daniel Stone
Robert Mader
Vitaly Prosyak
Leandro Ribeiro
Marek Vasut
Marius Vlad
Simon Ser
Veeresh Kadasani
Derek Foreman
Manuel Stoeckl