It turned out that with recent changes that call into dri3 from glFinish(),
it appears like different thread end up waiting for X events simultaneously,
causing deadlocks since they steal events from eachoter and update the dri3
counters behind eachothers backs.
This patch intends to improve on that. It allows at most one thread at a
time to wait on events for a single drawable. If another thread intends to
do the same, it's put to sleep until the first thread finishes waiting, and
then it rechecks counters and optionally retries the waiting. Threads that
poll for X events never pulls X events off the event queue if there are
other threads waiting for events on that drawable. Counters in the
dri3 drawable structure are protected by a mutex. Finally, the mutex we
introduce is never held while waiting for the X server to avoid
unnecessary stalls.
This does not make dri3 drawables completely thread-safe but at least it's a
first step.
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=102358
Fixes: d5ba75f888 "st/dri2 Plumb the flush_swapbuffer functionality through to dri3"
Signed-off-by: Thomas Hellstrom <thellstrom@vmware.com>
Acked-by: Nicolai Hähnle <nicolai.haehnle@amd.com>
While at it, drop the duplicate return.
Signed-off-by: Eric Engestrom <eric.engestrom@imgtec.com>
Reviewed-by: Emil Velikov <emli.velikov@collabora.com>
Reduce code duplication and automatically benefit from OS-specific
fixes to libdrm (e.g. in FreeBSD ports).
API was introduced with 2.4.74 and we already require 2.4.75 globally.
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=103283
Reviewed-by: Eric Engestrom <eric.engestrom@imgtec.com>
Reviewed-by: Emil Velikov <emil.velikov@collabora.com>
Rather than group dependencies in complex groups, use a flatter
structure with split dependencies to avoid checking for the same
dependencies twice.
v2: - Fix building vulkan drivers without gallium or dri drivers
v3: - Drop TODO comment that is done
- Fix typo in commit message
Signed-off-by: Dylan Baker <dylanx.c.baker@intel.com>
Reviewed-by: Eric Anholt <eric@anholt.net>
This gets GLX and the loader building. The resulting GLX and i965 have
been tested on piglit and seem to work fine. This patch leaves a lot of
todo's in it's wake, GLX is quite complicated, and the build options
involved are many, and the goal at the moment is to get dri and gallium
drivers building.
v2: - fix typo "vaule" -> "value"
- put the not on the correct element of the conditional
- Put correct description of dri3 option in this patch not the next
one (Eric A)
- fix non glvnd version (Eric A)
- build glx tests
- move loader include variables to this patch (Eric A)
v3: - set the version correctly for GL_LIB_NAME in libglx
v4: - set pkgconfig private fields
Signed-off-by: Dylan Baker <dylanx.c.baker@intel.com>
Reviewed-by: Eric Anholt <eric@anholt.net>
Avoid freeing buffers holding new back content
(with GLX_SWAP_COPY_OML and GLX_SWAP_EXCHANGE_OML)
Prevously that would have resulted in back buffer content becoming
incorrect after a swap, although I haven't managed to trigger such a
situation yet.
Signed-off-by: Thomas Hellstrom <thellstrom@vmware.com>
Reviewed-by: Sinclair Yeh <syeh@vmware.com>
Resize only in loader_dri3_get_buffers(),
where the dri driver has a chance to immediately update the viewport.
Signed-off-by: Thomas Hellstrom <thellstrom@vmware.com>
Reviewed-by: Sinclair Yeh <syeh@vmware.com>
When a drawable is resized, and we fill the resized buffers, with data
from the old buffers, use a local blit if there is a local buffer (back or
fake front), and we have local blitting capability.
Signed-off-by: Thomas Hellstrom <thellstrom@vmware.com>
Reviewed-by: Sinclair Yeh <syeh@vmware.com>
If we're seeing a drawable size change, in particular after processing a
configure notify event, make sure we invalidate so that the state tracker
picks up the new geometry.
Signed-off-by: Thomas Hellstrom <thellstrom@vmware.com>
Reviewed-by: Michel Dänzer <michel.daenzer@amd.com>
This tries to mimic dri2 behaviour where events are typically processed
while waiting for X replies. Since, during steady-state dri3 rendering, we
seldom wait for xcb replies, and haven't enabled any automatic event
processing, instead check for events after a fence wait.
Signed-off-by: Thomas Hellstrom <thellstrom@vmware.com>
Reviewed-by: Michel Dänzer <michel.daenzer@amd.com>
The copySubBuffer functionality always attempted a server side blit from
back to fake front if a fake front was present, and we weren't displaying
on a remote GPU.
Now that we always have local blit capability on modern drivers, first
attempt a local blit, and only if that fails, try the server blit.
Signed-off-by: Thomas Hellstrom <thellstrom@vmware.com>
Reviewed-by: Michel Dänzer <michel.daenzer@amd.com>
Reviewed-by: Axel Davy <axel.davy@normalesup.org>
With GLX_SWAP_COPY_OML and GLX_SWAP_EXCHANGE_OML it may happen in situations
when glXSwapBuffers() is immediately followed by for example another
glXSwapBuffers() or glXCopyBuffers() or back buffer age querying, that we
haven't yet allocated and initialized a new back buffer because there was
no GL rendering in between.
Make sure that we have a back buffer in those situations.
v2: Eliminate the drawable have_back_format member.
v3: Make sure we re-initialize the back even if it exists.
Signed-off-by: Thomas Hellstrom <thellstrom@vmware.com>
Reviewed-by: Michel Dänzer <michel.daenzer@amd.com>
Add support for the exchange swap method. Since we're now forcing a fake front
buffer and we exchange the back and fake front on swaps, we don't need to add
much code.
Signed-off-by: Thomas Hellstrom <thellstrom@vmware.com>
Reviewed-by: Michel Dänzer <michel.daenzer@amd.com>
Eliminate the back-to-fake-front copy by exchanging the previous back buffer
and the fake front buffer. This is a gain except when we need to preserve
the back buffer content but in that case we still typically gain by replacing
a server-side blit by a client side non-flushing blit.
Signed-off-by: Thomas Hellstrom <thellstrom@vmware.com>
Reviewed-by: Michel Dänzer <michel.daenzer@amd.com>
It's not used anywhere and now that we're about to exchange back- and
fake fronts it doesn't serve a purpose.
Signed-off-by: Thomas Hellstrom <thellstrom@vmware.com>
Reviewed-by: Michel Dänzer <michel.daenzer@amd.com>
Support the GLX_SWAP_COPY_OML method. When this method is requested, we use
the same swapbuffer code path as EGL_BUFFER_PRESERVED.
Signed-off-by: Thomas Hellstrom <thellstrom@vmware.com>
Reviewed-by: Michel Dänzer <michel.daenzer@amd.com>
EGL uses the force_copy parameter to loader_dri3_swap_buffers_msc() to indicate
that it wants to preserve back buffer contents across a buffer swap.
While the loader then turns off server-side page-flipping there's nothing to
guarantee that a new backbuffer isn't chosen when EGL starts to render again,
and that buffer's content is of course undefined.
So rework the functionality:
If the client supports local blits, allow server-side page flipping and when
a new back is grabbed, if needed, blit the old back's content to the new back.
If the client doesn't support local blits, disallow server-side page-flipping
to avoid a client deadlock and then, when grabbing a new back buffer, sleep
until the old back is idle, which may take a substantial time depending on
swap interval.
Signed-off-by: Thomas Hellstrom <thellstrom@vmware.com>
Reviewed-by: Michel Dänzer <michel.daenzer@amd.com>
The code was relying on us always having a current context for client local
image blit operations. Otherwise the blit would be skipped. However,
glxSwapBuffers, for example, doesn't require a current context and that was a
common problem in the dri1 era. It seems the problem has resurfaced with dri3.
If we don't have a current context when we want to blit, try creating a private
dri context and maintain a context cache of a single context.
Signed-off-by: Thomas Hellstrom <thellstrom@vmware.com>
Reviewed-by: Michel Dänzer <michel.daenzer@amd.com>
It's not very usable since in the rare, but definitely existing case that
we don't have a current context, it will return NULL.
Presumably it will always be safe to use the dri screen the drawable was
created with for operations on that drawable.
Signed-off-by: Thomas Hellstrom <thellstrom@vmware.com>
Reviewed-by: Michel Dänzer <michel.daenzer@amd.com>
Having two callbacks to manage a single int seems like an overkill.
Use a cached copy and update that when needed.
Signed-off-by: Emil Velikov <emil.velikov@collabora.com>
---
Might want to look if the dimensions dance in .query_surface ...
speaking of which close to nobody implements that ...
Currently xmlconfig is conditionally used, only when --enable-dri is
available.
As the library has moved to src/util and has wider wisebase, this guard
is no longer correct. Strictly speaking - it wasn't since the
introduction of xmlconfig into st/nine a while ago.
Unconditionally enable xmlconfig and drop the linking. As said before
there's other users of the library, so depending on the configure
options we will get multiple definitions of said symbols.
NOTE: To avoid breaking other combinations, this commit adds the
xmlconfig link to the required places - throughout gallium and the DRI
loaders.
Cc: Aaron Watry <awatry@gmail.com>
Signed-off-by: Emil Velikov <emil.velikov@collabora.com>
Reviewed-by: Nicolai Hähnle <nicolai.haehnle@amd.com>
Tested-by: Dieter Nützel <Dieter@nuetzel-hh.de>
This implements a wait for glXWaitGL, glXCopySubBuffer, dri flush_front and
creation of fake front until all pending SwapBuffers have been committed to
hardware. Among other things this fixes piglit glx-copy-sub-buffers on dri3.
Signed-off-by: Thomas Hellstrom <thellstrom@vmware.com>
Reviewed-by: Brian Paul <brianp@vmware.com>
Reviewed-by: Sinclair Yeh <syeh@vmware.com>
Reviewed-by: Eric Anholt <eric@anholt.net>
Cc: <mesa-stable@lists.freedesktop.org>
As of last commit, no invalid swap interval can be stored, so there's
no need to sanitize the values when reading them anymore.
Signed-off-by: Eric Engestrom <eric.engestrom@imgtec.com>
Reviewed-by: Daniel Stone <daniels@collabora.com>
Reviewed-by: Emil Velikov <emil.velikov@collabora.com>
Reviewed-by: Tapani Pälli <tapani.palli@intel.com>
If the application hasn't done any drawing since the last call, we
would reuse the same back buffer which was used for the previous swap,
which may not have completed yet. This could result in various issues
such as tearing or application hangs.
In the normal case, the behaviour is unchanged.
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=97957
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=101683
Cc: mesa-stable@lists.freedesktop.org
[Michel Dänzer: Make Thomas' fix from bugzilla actually work as
intended, write commit log]
Same as the previous commit, but this one was split out because it's
a bit more complicated: this field is given as a pointer to a function,
so the function had to be changed as well, and the function was use in
a bunch of places, which needed updating as well.
Signed-off-by: Eric Engestrom <eric@engestrom.ch>
Reviewed-by: Emil Velikov <emil.velikov@collabora.com>
Pretty much every other place does the same.
Cc: mesa-stable@lists.freedesktop.org
Signed-off-by: Emil Velikov <emil.velikov@collabora.com>
Reviewed-by: Eric Engestrom <eric@engestrom.ch>
By this allows us to fetch the device list/info w/o the revision field.
At the moment retrieving the latter wakes up the device.
Note: kernel patch to resolve that should be in 4.10.
Signed-off-by: Emil Velikov <emil.velikov@collabora.com>
Reviewed-by: Michel Dänzer <michel.daenzer@amd.com>
Reviewed-by: Eric Engestrom <eric.engestrom@imgtec.com>
Tested-by: Mike Lothian <mike@fireburn.co.uk>
Currently when running mesa on imx6 the following loader warnings
are seen:
# kmscube -D /dev/dri/card1
MESA-LOADER: device is not located on the PCI bus
MESA-LOADER: device is not located on the PCI bus
MESA-LOADER: device is not located on the PCI bus
Using display 0x1920948 with EGL version 1.4
As this is not an error message, change it to debug level in
order to have a cleaner log output.
Signed-off-by: Fabio Estevam <festevam@gmail.com>
Reviewed-by: Emil Velikov <emil.velikov@collabora.com>
This is a DRI3 version of a change made for DRI2
(4d6d4f939e, "egl/dri2: implement query surface hook"),
that fixed failures in dEQP-EGL.functional.resize.surface_size.grow
and dEQP-EGL.functional.resize.surface_size.shrink.
Cc: Tapani Pälli <tapani.palli@intel.com>
Cc: Mark Janes <mark.a.janes@intel.com>
Cc: Chad Versace <chadversary@chromium.org>
Signed-off-by: Brendan King <Brendan.King@imgtec.com>
Reviewed-by: Tapani Pälli <tapani.palli@intel.com>
Cc: "17.0" <mesa-stable@lists.freedesktop.org>
Otherwise we would fail with "implicit declaration of function" geteuid
and getenv respectively.
To trigger (re)move the libdrm.pc file and use the following:
$ ./autogen.sh --disable-egl --disable-gbm --disable-dri \
--with-dri-drivers=swrast --with-gallium-drivers=swrast
$ make
Cc: Vinson Lee <vlee@freedesktop.org>
Fixes: 3f462050c ("loader: Add an environment variable to override driver name choice.
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=99701
v2: [Emil: handle stdlib.h add commit message]
Signed-off-by: Emil Velikov <emil.velikov@collabora.com>
My vc4 simulator has been implemented so far by having an entrypoint
claiming to be i965, which was a bit gross. The simulator would be a lot
less special if we entered through the vc4 entrypoint like normal, so add
a loader environment variable to allow the i965 fd to probe as vc4.
Reviewed-by: Emil Velikov <emil.velikov@collabora.com>
Reviewed-by: Nicolai Hähnle <nicolai.haehnle@amd.com>
This makes it possible to 'use' the imx-drm driver. Remeber that it
is not possible to have sysmbol names in C/C++ with a '-' in it.
Changes since v1:
- move the fix to loader.c
Signed-off-by: Christian Gmeiner <christian.gmeiner@gmail.com>
Reviewed-by: Eric Engestrom <eric.engestrom@imgtec.com> (v1)
Reviewed-by: Emil Velikov <emil.velikov@collabora.com>
Changes since v1:
- renamed function to loader_get_extensions_name
- moved function into loader
Signed-off-by: Christian Gmeiner <christian.gmeiner@gmail.com>
V2: [Emil Velikov]
- Use local define.
Signed-off-by: Emil Velikov <emil.velikov@collabora.com>
With previous patches nearly all the original code (as seen in the
various loaders) is gone.
Update the copyright/license section to reflect that.
Signed-off-by: Emil Velikov <emil.velikov@collabora.com>
Reviewed-by: Axel Davy <axel.davy@ens.fr>
Reviewed-by: Nicolai Hähnle <nicolai.haehnle@amd.com>
Reminiscent from the pre-loader days, were we had multiple instances of
the loader logic in separate places and one could build a "GALLIUM_ONLY"
version.
Since that is no longer the case and the loaders (glx/egl/gbm) do not
(and should not) require to know any classic/gallium specific we can
drop the argument and the related code.
Signed-off-by: Emil Velikov <emil.velikov@collabora.com>
Reviewed-by: Axel Davy <axel.davy@ens.fr>
Reviewed-by: Nicolai Hähnle <nicolai.haehnle@amd.com>
Effectively everyone with actual hardware and/or requesting the
"device_name" requires a working libdrm. Thus they could/should already
be using the (now only) codepath.
Apart from the code simplification, we can slim down our configure.ac
even further. But that will be done in separate patch(es).
Cc: Gary Wong <gtw@gnu.org>
Signed-off-by: Emil Velikov <emil.l.velikov@gmail.com>
Reviewed-by: Axel Davy <axel.davy@ens.fr>
Reviewed-by: Nicolai Hähnle <nicolai.haehnle@amd.com>
As of last commit nothing in mesa depends on libudev.
Signed-off-by: Emil Velikov <emil.velikov@collabora.com>
Reviewed-by: Axel Davy <axel.davy@ens.fr>
Reviewed-by: Nicolai Hähnle <nicolai.haehnle@amd.com>
With this all the libudev related code is now gone.
Signed-off-by: Emil Velikov <emil.velikov@collabora.com>
Reviewed-by: Axel Davy <axel.davy@ens.fr>
Reviewed-by: Nicolai Hähnle <nicolai.haehnle@amd.com>
Currently not everyone has libudev and with follow-up patches we'll
completely remove the divergent codepaths.
Use the libdrm drm device API to construct the required ID_PATH_TAG-like
string, to preserve the current functionality for libudev users and
allow others to benefit from it as well.
v2: Drop ranty comments, pick the correct device
v3: \n -> \0 in PCI_ID_PATH_TAG_LENGTH comment (Axel).
v4: Use snprintf (Nicolai)
Signed-off-by: Emil Velikov <emil.velikov@collabora.com>
Reviewed-by: Axel Davy <axel.davy@ens.fr>
Improves readability and allows us to do further cleanups a lot easier.
Signed-off-by: Emil Velikov <emil.velikov@collabora.com>
Reviewed-by: Axel Davy <axel.davy@ens.fr>
Reviewed-by: Nicolai Hähnle <nicolai.haehnle@amd.com>
