Under X11 we can only ever have the same scale configured on all
monitors. In order to use e.g. scale 2 when there is a HiDPI monitor
connected, we must not disallow it because there is a monitor that does
not support scale 2. Thus we must show the same scale for every monitor
and monitor mode, even though it might result in a bad experience.
Do this by iterating through all the monitors adding all supported
scales by the preferred mode, combining all the supported scales. This
supported scales list is then used for all monitor and modes no matter
what.
https://bugzilla.gnome.org/show_bug.cgi?id=788901
When determining whether we should unredirect a window or not, ignore
offscreen windows, and just check the top most visible window.
Previously this was not an issue, but since 'stack-tracker: Keep
override redirect windows on top' we started sorting the UI frames
window, which is an offscreen override redirect window, on top, causing
the unredirect checking code to always check whether to unredirect the
UI frames window. This effectively disabled the compositor bypass
functionality.
https://bugzilla.gnome.org/show_bug.cgi?id=788493
Adding an internal signal and use it to update the internal state before
emitting "monitors-changed" which will be repeated by the screen to the world.
https://bugzilla.gnome.org/show_bug.cgi?id=788860
Don't use MAX(logical monitor scales) to determine the UI scaling
factor, just use the primary logical monitor. That's where the shell UI
will most likely be.
https://bugzilla.gnome.org/show_bug.cgi?id=788820
When we received two hot plug events that both resulted in headless
configuration, we tried to find a new window monitor given the old.
That resulted in a null pointer dereference; avoid that by only trying
to find the same monitor if there was an old one.
https://bugzilla.gnome.org/show_bug.cgi?id=788607
On hybrid GPU systems, hardware cursors needs to be realized on all the
GPUs, as scanout cursor planes cannot be shared. Do this by moving gbm
buffer and drm buffer ID management to a per GPU struct, realizing a
cursor on each GPU when previously only realized on the primary GPU.
https://bugzilla.gnome.org/show_bug.cgi?id=785381
A hybrid GPU system is a system where more than one GPU is connected to
connectors. A common configuration is having a integrated GPU (iGPU)
connected to a laptop panel, and a dedicated GPU (dGPU) connected to
one or more external connector (such as HDMI).
This commit adds support for rendering the compositor stage using the
iGPU, then copying the framebuffer content onto a secondary framebuffer
that will be page flipped on the CRTC of the dGPU.
This can work in two different ways: GPU accelerated using Open GL ES
3, or CPU unaccelerated.
When supported, GPU accelerated copying works by exporting the iGPU
onscreen framebuffer as a DMA-BUF, importing it as a texture on a
separate dGPU EGL context, then using glBlitFramebuffer(), blitting it
onto a framebuffer on the dGPU that can then be page flipped on the dGPU
CRTC.
When GPU acceleration is not available, copying works by creating two
dumb buffers, and each frame glReadPixels() from the iGPU EGL render
context directly into the dumb buffer. The dumb buffer is then page
flipped on the dGPU CRTC.
https://bugzilla.gnome.org/show_bug.cgi?id=785381
Add helper functions and macros for managing and drawing OpenGL ES 3.
It will be used for blitting framebuffers between multiple GPUs in
hybrid GPU systems.
https://bugzilla.gnome.org/show_bug.cgi?id=785381
Eventually, we'll render buffers without using Cogl, and for this we
need to be able to do things like creating, destroying and changing the
context, as well as swapping buffers.
https://bugzilla.gnome.org/show_bug.cgi?id=785381
First find the primary GPU and open it. Then go through all other
discovered GPUs with connectors and add those too. MetaRendererNative
still fails to initialize when multiple added GPUs and
MetaCursorRendererNative still always falls back on OpenGL based cursor
rendering when there are multiple GPUs.
https://bugzilla.gnome.org/show_bug.cgi?id=785381
When creating a renderer with a custom winsys (which is always how
mutter uses cogl) make it possible to pass a user data with the winsys.
Still unused.
https://bugzilla.gnome.org/show_bug.cgi?id=785381
Make dumb buffer creation/destruction reusable by introducing a
MetaDumbBuffer type (private to meta-renderer-native.c). This will
later be used for software based fallback paths for copying render GPU
buffers onto secondary GPUs.
https://bugzilla.gnome.org/show_bug.cgi?id=785381
On a CRTC that doesn't report any transforms at all, setting the normal
transform will fail. Avoid failing by checking if any transforms are
supported before applying it, and early out if no transforms are
supported.
https://bugzilla.gnome.org/show_bug.cgi?id=785381
Get rid of some technical dept by removing the support in the native
backend for drawing the the whole stage to one large framebuffer.
Previously the only way to disable stage views was to set the
MUTTER_STAGE_VIEWS environment variable to 0; doing that now will cause
the native backend to fail to initialize.
https://bugzilla.gnome.org/show_bug.cgi?id=785381
Don't permanently fall back to OpenGL based cursor rendering when
setting the HW cursor fails with EACCES as that may happen on VT
switching and other things temporarily revoking fd access.
https://bugzilla.gnome.org/show_bug.cgi?id=785381
When drmHandleEvent() returns an error and errno is set to EAGAIN,
instead of ending up in a busy loop, poll() the fd until there is
anything to read.
https://bugzilla.gnome.org/show_bug.cgi?id=785381
The prefix, if any, of a variable name often contains information about
the namespace (such as clutter_backend is the ClutterBackend, while
backend is a MetaBackend). Clean up some more inconsistencies in
meta-renderer-native.c where various variable names were egl_ prefixed
but in fact was Cogl types.
https://bugzilla.gnome.org/show_bug.cgi?id=785381
In order to eventually support multilpe GPUs with their own connectors,
split out related meta data management (i.e. outputs, CRTCs and CRTC
modes) into a new MetaGpu GObject.
The Xrandr backend always assumes there is always only a single "GPU" as
the GPU is abstracted by the X server; only the native backend (aside
from the test backend) will eventually see more than one GPU.
The Xrandr backend still moves some management to MetaGpuXrandr, in
order to behave more similarly to the KMS counterparts.
https://bugzilla.gnome.org/show_bug.cgi?id=785381
Pass the backend to a new factory function, and keep a pointer to the
monitor manager, which is accessed elsewhere in the same file instead of
fetching the singleton. The HW cursor initialization part is also made
more obvious, without depending on seemingly irrelevant clutter
features.
https://bugzilla.gnome.org/show_bug.cgi?id=785381
Move finding, opening and managment of the KMS file descriptor to
MetaMonitorManagerKms. This means that the monitor manager creation can
now fail, both if more than one GPU with connectors is discovered, or
if finding or opening the primary GPU fails.
https://bugzilla.gnome.org/show_bug.cgi?id=785381
The monitor manager instance was created and setup in one step; at
construction. This is problematic if, in the future, the monitor manager
creation can fail, as the monitor manager is created quite late.
To make it possible to in the future fail creating a monitor manager,
create the instance very early when initiating the backend, then on
post init backend setup, "setup" the monitor manager state, i.e. read
the current state and setup the stage.
https://bugzilla.gnome.org/show_bug.cgi?id=785381
The error was printed, then dropped, eventually resulting in another
generic error being printed. Lets just propogate the error all the way
up instead.
https://bugzilla.gnome.org/show_bug.cgi?id=785381
Move code dealing with Xrandr MetaCrtcs and related functionality to its
own file. Eventually, MetaCrtcCrtc should be introduced, based on
MetaCrtc, and this commit is in preparation for that.
https://bugzilla.gnome.org/show_bug.cgi?id=785381
Move code dealing with X11 MetaOutputs and related functionality to its
own file. Eventually, a MetaOutputXrandr should be introduced, based on
MetaOutput, and this commit is in preparation for that.
https://bugzilla.gnome.org/show_bug.cgi?id=785381
Move code dealing with MetaCrtcKms and related functionality to its
own file. Eventually, MetaCrtcKms should become a GObject based on
MetaCrtc, and this commit is in preparation for that.
https://bugzilla.gnome.org/show_bug.cgi?id=785381
Instead of passing it around or fetching the singleton, keep a pointer
to the monitor manager that owns the CRTC. This will eventually be
replaced with a per GPU/graphics card object.
https://bugzilla.gnome.org/show_bug.cgi?id=785381
