The naive way to combine output transforms is not great, especially
because of the for loop.
The output transform kind enums have the following bit pattern:
- rotate-0: 000
- rotate-90: 001
- rotate-180: 010
- rotate-270: 011
- flip-0: 100
- flip-90: 101
- flip-180: 110
- flip-270: 111
`(rotate-a + rotate-b) & 0x3` can be used to combine two rotation
transforms. The rotatation is clockwise.
If the first transform is a flip transform, then we should rotate
counter-clockwise, i.e. `(rotate-a - rotate-b) & 0x3`.
When users simultaneously press Shift and Tab, the keys are sometimes
registered as Shift+Tab, and sometimes as Shift+Backtab.
So we need to match received Shift+Tab against shortcuts containing
Shift+Backtab, and vice versa. Previously the code only checks for
the first case. This commit adds checks for the second case.
BUG: 438991
FIXED-IN: 6.0
Our painting code is assumed to work as following: scale the geometry,
snap it to the pixel grid, apply the render transform, e.g. flip the
geometry vertically.
However, with QMatrix4x4 in RenderViewport, we have a slightly different
order: scale the geometry, apply the render transform, snap to the pixel
grid. It results in mapToRenderTarget() not properly mapping logical
geometry to the device geometry, which later manifests as glitches.
BUG: 477455
Automatic backend selection is a very normal by-design activity that warrants informing. Decrease from log level Warning to Info to avoid spoiling the log at too high of a log priority.
If an output is disabled, the Output object will be kept alive. That
means that the aboutToChange connection will be kept.
If the output is enabled again and its transform changes, its contents
will be captured more than once.
In order to fix, the screentransform plugin has to break the
aboutToChange connection.
If the output configuration doesn't touch the output transform,
capturing the previous screen contents is pointless.
I believe the main reason why the screen transform operates this way is
because it couldn't access OutputConfiguration before.
Polling the dmabuf for readability doesn't appear to work on NVidia and
we're no longer using an egl surface where the driver does this for us,
so we need to explicitly wait for rendering to complete or there are glitches
on the output
The OpacityMask is used purely for rounding the corners. We can get rid
of it by using ShadowedTexture which does the same thing while also
drawing the shadow, meaning we can also eliminate the ShadowedRectangle.
If the wl_surface is unmapped, the compositor should unmap the window.
Most clients don't do it, and instead destroy the wl_surface or the
surface role object or both. A very tiny fraction of clients actually
close the window by unmapping the wl_surface. Either way, it's worth
handling that case because xdg-shell protocol says that the clients are
allowed to do it.
BUG: 478297
OverlayWindow had different paths for GLX and EGL when it came to
managing size. On EGL the initial size comes from the overlay resizing
to workspace, but future updates were explicitly handled by the backend.
On GLX the backend tracked changes, but then it was the overlay's job to
resize but using a different method.
This patch also prevents use of workspace after destruction fixing
kwin_x11 --replace.
Milou.ResultsView loads runners regardless whether the query string is
empty. It's not clear what milou should do. There are valid arguments
both in favor and against preloading runners.
This change puts Milou.ResultsView behind a Loader so milou is loaded
when it's actually needed and not when starting overview.
CCBUG: 455780
Captions are set to elide with ElideRight, which does allow for multi-line captions.
However, this means that the height of the captions depends on their width (since a shorter
width results in more lines), and the width of the captions depends on the size of the
window thumbnail, which depends on the height of the caption to be positioned. If the
caption is really long, this can cause visual glitches. Having a maximum line value avoids that.
BUG: 477103
To do this, this commit adds infrastructure to include glsl files,
extracts all the color management functions and uniforms into such a
file, and makes use of it in the invert effect
BUG: 443148
The pageflip event may never arrive, as the GPU to trigger it is gone. It
also doesn't make a difference, as the GPU is unaccessible anyways, so
KWin can't affect the relevant output(s) anymore
If the client sets invalid min or max size, that can cause some code in KWin
to assert. To ensure that doesn't happen, enforce that the minimum size is
always at most as big as the maximum.
CCBUG: 478269
WindowThumbnails are image providers meaning it can provide textures
directly to ShaderEffects
layer.enabled is effectively a ShaderEffectSource meaning we render our
single desktop background item into an offscreen texture to ultimately
contain our desktop background.
We can cut out the middle-man and use the DesktopBackground as a source
directly saving a massive texture being generated.
The compilation step still takes a significant amount of time on the
first launch. On my machine, it's around 1s. Even if it happens just
once, freezing the session for 1 second is not great.
This change makes the overview effect load main.qml asynchronously
when plasma session starts. By the time the session is loaded, it should
be ready.
CCBUG: 455780
