clutter_actor_get_transformed_position() would write the uninitialized
values of v2 when clutter_actor_apply_transform_to_point() fails in
_clutter_actor_fully_transform_vertices() because the actor has not been
added to the stage yet.
When called from JS this would overwrite the zero initialized values
passed in from gjs. If the uninitialized values now happen to correspond
to one of the NaN float values used by mozjs to represent a pointer
type, this would lead to seemingly random crashes in mozjs code later
on.
Avoid this by using _clutter_actor_fully_transform_vertices() directly,
which allows us to check if it failed.
Related: https://gitlab.gnome.org/GNOME/gnome-shell-extensions/-/issues/469
Related: https://gitlab.gnome.org/GNOME/gjs/-/issues/591
Part-of: <https://gitlab.gnome.org/GNOME/mutter/-/merge_requests/3453>
Although they're in the same units, `radius` is easier to understand than
`sigma` and makes the public API independent of the blur algorithm used
behind the scenes. We now only keep the `sigma` terminology where the
implementation is Gaussian-specific.
The assumption that `sigma = radius / 2.0` is actually not new here. We
just move it from `_st_create_shadow_pipeline` (gnome-shell!1905) into
`clutter_blur_new`.
Part-of: <https://gitlab.gnome.org/GNOME/mutter/-/merge_requests/1908>
Some actors have a well-defined layout manager other than FixedLayout.
If they do, we can handle the layout manager creation at the
ClutterActor instantiation, like GTK does for widget layout managers.
Part-of: <https://gitlab.gnome.org/GNOME/mutter/-/merge_requests/3445>
Tracy can filter its statistics by user text, in our case by span
description. It's useful to filter by actor type and name, and not so
much by the pointer. So, remove it, and also reduce the amount of
punctuation.
Part-of: <https://gitlab.gnome.org/GNOME/mutter/-/merge_requests/3417>
Transfer none was achieved using a stack GArray in the stage which
would get resized to 0 at the end of every frame to "free" it.
In the case of direct scanout however, painting the next frame only
happens after leaving fullscreen again. Until then the array just kept
growing and because GArrays don't reallocate when shrunk, this memory
remained allocated even after leaving fullscreen.
There is no cache benefit from storing paint volumes this way, because
nothing accesses them after their immediate use in the calling code.
Also the reduced overhead from avoiding malloc calls seems negligible as
according to heaptrack this only makes up about 2-3% of the temporary
allocations.
Changing this to transfer full and removing the stack array simplifies
the code and fixes the "leak".
Closes: https://gitlab.gnome.org/GNOME/mutter/-/issues/3191
Part-of: <https://gitlab.gnome.org/GNOME/mutter/-/merge_requests/3442>
It was for a failed expriment that tried to mmap() dmabuf memory and
find damaged regions to decrease the amount that was eventually used to
write to an onscreen, but mmap:ing is only fast enough on intel, and
it's only relevant on various server GPUs. For it to be achievable, we
need to render to system memory in a way that we don't need to copy it
out of OpenGL, but that's currently not possible.
Part-of: <https://gitlab.gnome.org/GNOME/mutter/-/merge_requests/3443>
This is a step in cleaning up the Clutter context management. By making
it a GObject it's easier to add e.g. properties and features that helps
with introspection.
For now, this means the context creation is changed to go via a
"constructor" (clutter_create_context()). This is so that the global
context singleton can be mantained outsid of ClutterContext, until it
can be removed.
Part-of: <https://gitlab.gnome.org/GNOME/mutter/-/merge_requests/2016>
The original purpose of being able to report errors is no longer
relevant, since the Clutter backend is now practically a thin wrapper
around the actual backend, which has already dealt with error reporting.
Thus move this to the regular constructor path.
Part-of: <https://gitlab.gnome.org/GNOME/mutter/-/merge_requests/2016>
The intention for ClutterContext is to be more or less the MetaContext
or CoglContext equivalent. Lets rename the type so that it becomes more
consistent with the other similar types.
Part-of: <https://gitlab.gnome.org/GNOME/mutter/-/merge_requests/2016>
We might pick an actor that needs relayout. I've seen this happen inside
hiding / unmapping in particular. In this case, calculate_clear_area ()
will call clutter_actor_get_abs_allocation_vertices () which in turn
will force a relayout. However, this is not what we want, because:
1. We don't want to run layout during picking.
2. If the actor needs an allocation, then the pick stack could not have
used an up-to-date allocation, because it is not computed. Therefore
this clear area would use a potentially completely different
allocation than the one stored in the pick stack.
Thankfully, clear area seems to be used as a cache/optimization, so
let's just avoid computing it if the actor is not allocated.
Part-of: <https://gitlab.gnome.org/GNOME/mutter/-/merge_requests/3425>
In profilers with a timeline or flame graph views it is a very common
scenario that a span name must be displayed in an area too short to fit
it. In this case, profilers may implement automatic shortening to show
the most important part of the span name in the available area. This
makes it easier to tell what's going on without having to zoom all the
way in.
The current trace span names in Mutter don't really follow any system
and cannot really be shortened automatically.
The Tracy profiler shortens with C++ in mind. Consider an example C++
name:
SomeNamespace::SomeClass::some_method(args)
The method name is the most important part, and the arguments with the
class name will be cut if necessary in the order of importance.
This logic makes sence for other languages too, like Rust. I can see it
being implemented in other profilers like Sysprof, since it's generally
useful.
Hence, this commit adjusts our trace names to look like C++ and arrange
the parts of the name in the respective order of importance.
Part-of: <https://gitlab.gnome.org/GNOME/mutter/-/merge_requests/3402>
NULL actor pointers seem to arise sometimes in `clutter_stage_update_device`
when using a touchscreen, but that's only fatal with `CLUTTER_DEBUG=event`.
So just handle NULL where it was crashing: `_clutter_actor_get_debug_name`.
Part-of: <https://gitlab.gnome.org/GNOME/mutter/-/merge_requests/3413>
Scoped traces are less error prone, and they can still be ended
prematurely if needed (this commit makes that work). The only case this
doesn't support is starting a trace inside a scope but ending outside,
but this is pretty unusual, plus we have anchored traces for a limited
variation of that.
Part-of: <https://gitlab.gnome.org/GNOME/mutter/-/merge_requests/3396>
Allow only specific files to use those deprecated APIs making
it easier to find where deprecated APIs are still in use
and avoid introducing new usages without being noticed
Part-of: <https://gitlab.gnome.org/GNOME/mutter/-/merge_requests/3400>
Group all the three config files from clutter/cogl/meta into one
and also remove unnused configurations and replace duplicated ones
This also fixes Cogl usage of HAS_X11/HAS_XLIB to match the expected
build options
Part-of: <https://gitlab.gnome.org/GNOME/mutter/-/merge_requests/3368>
clutter_keyval_name() returns a pointer to a static array, not
newly allocated memory. Add a transfer annotation to indicate
that callers must not free the returned memory.
While add it, make the return value const to stress further that
callers shouldn't touch the returned memory.
Part-of: <https://gitlab.gnome.org/GNOME/mutter/-/merge_requests/3386>
Currently, nothing uses the dumped json of the paint nodes tree. So
let us drop them in a separate commit so it can easily be reverted
if someone ends up wanting to build a tool to consume and inspect
the JSON.
Part-of: <https://gitlab.gnome.org/GNOME/mutter/-/merge_requests/3354>
Currently, json-glib is used for two things:
- For loading scripts, nothing seems to use that in real life other
than some tests
- For debugging paint nodes
For now, the PR drops the first use case and only require json-glib
if it is a debug build
Part-of: <https://gitlab.gnome.org/GNOME/mutter/-/merge_requests/3354>
We don't actually need the host to be a container, so simply work on
actors saving us a few casts.
This'll simplify dropping ClutterContainer entirely later, and
StViewport/ShellWindowPreviewLayout will also need to be updated for the
new signatures
Part-of: <https://gitlab.gnome.org/GNOME/mutter/-/merge_requests/3384>
The layout manager takes the generic ClutterActor expand/align
properties into account. Everyone should already use those instead
of the custom layout/child properties, so removing them should have
little fallout, while making for a nice cleanup.
Part-of: <https://gitlab.gnome.org/GNOME/mutter/-/merge_requests/3382>
