This isn't an error if the screen isn't accelerated in the first place.
Signed-off-by: Adam Jackson <ajax@redhat.com>
Acked-by: Keith Packard <keithp@keithp.com>
This appears to be essentially unused. The only known client-side
library for the SELinux extension is xcb, which does not look for the
name "Flask". The "SGI-GLX" alias for GLX appears to be a bit of
superstition at this point, NVIDIA's driver does not expose it and Mesa
does not check for it.
Signed-off-by: Adam Jackson <ajax@redhat.com>
Acked-by: Keith Packard <keithp@keithp.com>
A common meson pattern is to use empty arrays for optional sources and
dependencies, since it generally iterates over trees of arrays looking
for values. A value of '' will actually go looking for ''.
Daniel Stone <daniels@collabora.com>
Signed-off-by: Eric Anholt <eric@anholt.net>
This is a work in progress that builds Xvfb, Xephyr, Xwayland, Xnest,
and Xdmx so far. The outline of Xquartz/Xwin support is in tree, but
hasn't been built yet. The unit tests are also not done.
The intent is to build this as a complete replacement for the
autotools system, then eventually replace autotools. meson is faster
to generate the build, faster to run the bulid, shorter to write the
build files in, and less error-prone than autotools.
v2: Fix indentation nits, move version declaration to project(), use
existing meson_options for version-config.h's vendor name/web.
Signed-off-by: Eric Anholt <eric@anholt.net>
Acked-by: Keith Packard <keithp@keithp.com>
Reviewed-by: Peter Hutterer <peter.hutterer@who-t.net>
The clever pointer tricks were actually not working, and we were doing
the byte-by-byte moves in general. By just doing the memcpy and
obvious byte swap code, we end up generating actual byte swap
instructions, thanks to optimizing compilers.
text data bss dec hex filename
before: 2240807 51552 132016 2424375 24fe37 hw/xfree86/Xorg
after: 2215167 51552 132016 2398735 249a0f hw/xfree86/Xorg
Signed-off-by: Eric Anholt <eric@anholt.net>
Reviewed-by: Keith Packard <keithp@keithp.com>
This dumps a ton of configure-time checks for system endian macros.
Given that we're marking the mixed-endian fixup code as cold, getting
at the system macros is a waste of code.
Signed-off-by: Eric Anholt <eric@anholt.net>
Reviewed-by: Keith Packard <keithp@keithp.com>
Dead code since:
commit 8aacf47e17
Author: Adam Jackson <ajax@redhat.com>
Date: Fri Oct 4 12:58:19 2013 -0400
glx: Remove DRI1 AIGLX (v2)
Signed-off-by: Adam Jackson <ajax@redhat.com>
GLX_ARB_create_context, which we aspire to support, allows making GL 3.0
or newer contexts current with null current drawables. Strictly this
might not be legal for pre-3.0 contexts, but there's no harm in allowing
it anyway.
Signed-off-by: Adam Jackson <ajax@redhat.com>
Should you find yourself using a 16bpp display while also using a
compositor, you poor soul, you may find that your GLX applications
behave strangely; in particular, glxgears will be transparent. This is
because it clears to (0,0,0,0) which is transparent if you honor alpha,
and it will choose the synthetic visual because it has the most
available r/g/b bits.
To avoid this, bump synthetic visuals to a higher (less-preferred)
select group. Unless the client explicitly asks for non-zero alpha bits,
this will prefer any rgb565 visual ahead of the argb8888 visual.
Reviewed-by: Eric Anholt <eric@anholt.net>
Signed-off-by: Adam Jackson <ajax@redhat.com>
We already send this for fbconfigs. Mesa happens to implement
glXChooseVisual relative to the fbconfig data, but that might not be
true of NVIDIA's libGL.
Reviewed-by: Eric Anholt <eric@anholt.net>
Signed-off-by: Adam Jackson <ajax@redhat.com>
They're not needed, and they won't be present on win32.
Signed-off-by: Adam Jackson <ajax@redhat.com>
Reviewed-by: Emil Velikov <emil.l.veikov@gmail.com>
Presently the option guards both direct and accelerated indirect GLX. As
such when one toggles it off they end up without any acceleration.
Remove the option all together until we have the time to split/rework
things.
Cc: Jon Turney <jon.turney@dronecode.org.uk>
Reviewed-by: Adam Jackson <ajax@redhat.com>
Signed-off-by: Emil Velikov <emil.l.velikov@gmail.com>
The messages from glxdricommon.c (used by drisw) still have the A, but
at least we're don't have it locally.
Reviewed-by: Adam Jackson <ajax@redhat.com>
Signed-off-by: Emil Velikov <emil.l.velikov@gmail.com>
Prior to commit f95645c6f7 ("glx: Don't enable EXT_texture_from_pixmap
unconditionally") DRI glx would always advertise EXT_texture_from_pixmap.
That commit moved the setting of the extension in the extension bits from
__glXInitExtensionEnableBits to its callers so that
__glXInitExtensionEnableBits can be used more generally, but at the same
time made the setting of EXT_texture_from_pixmap conditionally on
__DRI_TEX_BUFFER being present.
This has result in an unintended behavior change which breaks e.g.
compositors running on llvmpipe. This commit makes the DRI swrast glx code
advertise EXT_texture_from_pixmap unconditionally again fixing this.
Fixes: f95645c6f7 ("glx: Don't enable EXT_texture_from_pixmap unconditionally")
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
---
Changes in v2:
-Only add unconditional advertising of GLX_EXT_texture_from_pixmap
to glxdriswrast.c, do not also add it to glxdri2.c
If windowsdriproto headers are available, build a Windows-DRI extension,
which supports requests to enable local clients to directly render GL to a
Windows drawable:
- a query to check if WGL is being used on a screen
- a query to map a fbconfigID to a native pixelformatindex
- a query to map a drawable to a native handle
Windows-DRI can only be useful if we are using WGL, so make an note if WGL
is active on a screen.
Make validGlxDrawable() public
Adjust glxWinSetPixelFormat() so it doesn't require a context, just a
screen and config.
That enables factoring out the deferred drawable creation code as
glxWinDeferredCreateDrawable()
Enhance glxWinDeferredCreateDrawable(), so that pixmaps are placed into a
file mapping, so they exist in memory which can be shared with the direct
rendering process.
Currently, this file mapping is accessed by a name generated from the XID.
This will not be unique across multiple server instances. It would perhaps
be better, although more complicated, to use an anonymous file mapping, and
then duplicate the handle for the direct rendering process.
Use glxWinDeferredCreateDrawable() to ensure the native handle exists for
the Windows-DRI query to map a drawable to native handle.
v2:
Various printf format warning fixes
v3:
Fix format warnings on x86
Move some uninteresting windows-dri output to debug log level
v4:
check for windowsdriproto when --enable-windowsdri
use windowsdriproto_CFLAGS
Signed-off-by: Jon Turney <jon.turney@dronecode.org.uk>
Reviewed-by: Colin Harrison <colin.harrison@virgin.net>
>From the GLX spec:
"GLX_X_RENDERABLE is a boolean indicating whether X can be used to
render into a drawable created with the GLXFBConfig. This attribute
is True if the GLXFBConfig supports GLX windows and/or pixmaps."
Every backend was setting this to true unconditionally, and then the
core ignored that value and sent true unconditionally on its own. This
is broken for ARB_fbconfig_float and EXT_fbconfig_packed_float, which
only apply to pbuffers, which are not renderable from non-GLX APIs.
Instead compute GLX_X_RENDERABLE from the supported drawable types. The
dri backends were getting _that_ wrong too, so fix that as well.
This is not a functional change, as there are no mesa drivers that claim
to support __DRI_ATTRIB_{UNSIGNED_,}FLOAT_BIT yet.
Signed-off-by: Adam Jackson <ajax@redhat.com>
Reviewed-by: Eric Anholt <eric@anholt.net>
noClientException is now never filled in with a meaningful value, it's
always -1. The sole caller of this function disregards the error value
in any case.
Reviewed-by: Eric Anholt <eric@anholt.net>
Signed-off-by: Adam Jackson <ajax@redhat.com>
GLX_EXT_tetxure_from_pixmap operates on a GLXPixmap, which takes a
reference on the backing pixmap; that GLXPixmap might be long-lived, so
we should account for it in ResQueryClientPixmapBytes.
Acked-by: Michel Dänzer <michel.daenzer@amd.com>
Signed-off-by: Adam Jackson <ajax@redhat.com>
When multiple processes are using GL with indirect rendering a race
condition can make drawables refcount never drop to zero.
This situation could happen when there are many X clients using indirect
GLX:
1 - client1: calls glXMakeCurrent
2 - client2: calls glXMakeCurrent
This is the first context switch for this client. So old_context_tag=0
3 - client1: calls glXRender
For the client, its context is already current.
For the server side lastGLContext points to client2's context.
Reviewed-by: Adam Jackson <ajax@redhat.com>
Signed-off-by: Guilherme Quentel Melo <gqmelo@gmail.com>
This is only meaningful for indirect contexts, and all it does is
(maybe) prevent a flush when switching away from an indirect context.
Indirect contexts aren't worth optimizing for, and Mesa tracks whether
a flush is needed anyway.
Careful readers will note that ReadPixels would reset the flag even
though it doesn't imply a flush!
Reviewed-by: Eric Anholt <eric@anholt.net>
Signed-off-by: Adam Jackson <ajax@redhat.com>
No functional change, just rearranging some code to make later commits
more obvious.
Reviewed-by: Eric Anholt <eric@anholt.net>
Signed-off-by: Adam Jackson <ajax@redhat.com>
For the dri2 backend, we depend on xfree86 already, so we can walk the
options for the screen looking for a vendor string from xorg.conf. For
the swrast backend we don't have that luxury, so just say mesa. This
extension isn't really meaningful on Windows or OSX yet (since libglvnd
isn't really functional there yet), so on those platforms we don't say
anything and return BadValue for the token from QueryServerString.
v2: Use xnf* allocators when parsing options (Eric and Emil)
Reviewed-by: Eric Anholt <eric@anholt.net>
Reviewed-by: Emil Velikov <emil.velikov@collabora.com>
Signed-off-by: Adam Jackson <ajax@redhat.com>
Now that the enable bits are in the screen base class we can compute
this in one place, rather than making every backend do it.
Reviewed-by: Eric Anholt <eric@anholt.net>
Reviewed-by: Emil Velikov <emil.velikov@collabora.com>
Signed-off-by: Adam Jackson <ajax@redhat.com>
GLX 1.3 implies equivalent functionality, so this is safe to enable
unconditionally, and bindContext always takes both drawable and readable
arguments in any case. Mesa stopped exporting the __DRI_READ_DRAWABLE
extension in 8.0 (when the DRI1 drivers were removed) so this will
restore the extension string.
Reviewed-by: Eric Anholt <eric@anholt.net>
Reviewed-by: Emil Velikov <emil.velikov@collabora.com>
Signed-off-by: Adam Jackson <ajax@redhat.com>
Not all backend servers implement this. Those that don't happen to not
use __glXInitExtensionEnableBits, but we'd like that to change, so fix
it up before we switch them over.
Reviewed-by: Eric Anholt <eric@anholt.net>
Reviewed-by: Emil Velikov <emil.velikov@collabora.com>
Signed-off-by: Adam Jackson <ajax@redhat.com>
This extension is direct-only and has no GLX protocol. We don't even
track an enable bit for it, trying to turn it on is pointless.
Reviewed-by: Eric Anholt <eric@anholt.net>
Reviewed-by: Emil Velikov <emil.velikov@collabora.com>
Signed-off-by: Adam Jackson <ajax@redhat.com>
This existed only to be strdup'd and then immediately freed.
Reviewed-by: Eric Anholt <eric@anholt.net>
Reviewed-by: Emil Velikov <emil.velikov@collabora.com>
Signed-off-by: Adam Jackson <ajax@redhat.com>
The tokens for this are already defined by GLX_ARB_fbconfig_float, which
we already support, so just add the extension to the list and let the
driver provide those configs if it wants.
Reviewed-by: Eric Anholt <eric@anholt.net>
Signed-off-by: Adam Jackson <ajax@redhat.com>
This is correct as it is, but only because we know no DRI drivers
implement stereo.
v2: Use new ATTRIB macro
Reviewed-by: James Jones <jajones@nvidia.com>
Reviewed-by: Eric Anholt <eric@anholt.net>
Signed-off-by: Adam Jackson <ajax@redhat.com>
libglvnd would like to use this to map from drawable to screen, so it
can know which driver to dispatch to. Refer to the spec proposal here:
https://lists.freedesktop.org/archives/mesa-dev/2016-March/109543.html
Reviewed-by: Eric Anholt <eric@anholt.net>
Signed-off-by: Adam Jackson <ajax@redhat.com>
No functional change, just a little easier to read and harder to get
wrong.
Reviewed-by: Eric Anholt <eric@anholt.net>
Signed-off-by: Adam Jackson <ajax@redhat.com>
AddResource will have called DrawableGone, which takes care of the
destruction.
Reviewed-by: Rémi Cardona <remi@gentoo.org>
Signed-off-by: Julien Cristau <jcristau@debian.org>
As of v4 of this extension, any GLES version number may be requested (to
enable GLES3 and later). To comply with this, simply remove the API
version checks and leave it to the DRI driver to validate. This happens
to also enable using GLES1 in direct contexts, so if that's the dire
situation you find yourself in, your client driver at least stands a
chance of working.
v4 also specifies that both extension strings should be advertised for
compatibility with clients written against v1 of the extension spec, so
add the es_profile bit to the extension list and enable it whenever we
would enable es2_profile.
Reviewed-by: Ilia Mirkin <imirkin@alum.mit.edu>
Signed-off-by: Adam Jackson <ajax@redhat.com>
So copy sub buffer isn't a core extensions it's a driver extension
which means we are using totally the wrong interface to query for it
here, which means bad things happen when you roll out this code,
for instance MESA_copy_sub_buffer stops working.
This is just the hack I'm sticking in Fedora to avoid the regression
for now, but hopefully will inspire us.
Reviewed-by: Adam Jackson <ajax@redhat.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
This extension allows clients to opt out of the implicit glFlush on
context release, which is quite nice for performance for clients using
multiple contexts. The server doesn't really need to be aware of the
client's decision, at least for direct contexts, but it does need to not
reject the context attribute out of hand.
This patch won't do anything unless built against a Mesa that defines
the __DRI2_FLUSH_CONTROL extension (and a new enough glxext.h, but
that's been there since 10.3 at least).
Reviewed-by: James Jones <jajones@nvidia.com>
Signed-off-by: Adam Jackson <ajax@redhat.com>
This gets you nice things like core contexts when using Xvfb.
Also, no, MESA_copy_sub_buffer is not enabled automatically.
Reviewed-by: James Jones <jajones@nvidia.com>
Reviewed-by: Jon Turney <jon.turney@dronecode.org.uk>
Signed-off-by: Adam Jackson <ajax@redhat.com>
This reverts commit d61ae18074.
If the DRI2 provider is disabled, then we don't advertise the correct
GLX extensions to clients, and things like GLES fail.
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=90442
Reviewed-by: Eric Anholt <eric@anholt.net>
Reviewed-by: Michel Dänzer <michel.daenzer@amd.com>
There is no point in setting up the acceleration for indirect GLX if
indirect GLX is itself disabled.
Reviewed-by: Adam Jackson <ajax@redhat.com>
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
v2: fixup whitespace
Signed-off-by: Alan Coopersmith <alan.coopersmith@oracle.com>
Reviewed-by: Matt Turner <mattst88@gmail.com>
Reviewed-by: Michel Dänzer <michel.daenzer@amd.com>
Some people like to call this on bare Window XIDs and expect reasonable
results. I sure wish they wouldn't, but since they do, if we're given
a window without any glx decoration just fill in as much as we can. This
means you won't actually get an answer for GLX_FBCONFIG_ID and friends,
but there's not much to be done about that, and it matches what NVIDIA's
driver seems to do.
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=54080
Reviewed-by: Eric Anholt <eric@anholt.net>
Signed-off-by: Adam Jackson <ajax@redhat.com>
This adds a dummy implementation for the loseCurrent function in
__GLXContext for direct contexts which just returns GL_TRUE. Without
this then the X server can crash if receives a MakeCurrent message for
a direct context because it will attempt to call loseCurrent when
cleaning up the client in the callback for ClientStateGone.
[ajax: added assumed s-o-b line]
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=86531
Reviewed-by: Adam Jackson <ajax@redhat.com>
Signed-off-by: Neil Roberts <neil@linux.intel.com>
Signed-off-by: Keith Packard <keithp@keithp.com>
We're using compiler compatibility settings which generate warnings
when a variable is declared after the first statement.
Signed-off-by: Keith Packard <keithp@keithp.com>
Reviewed-by: Alan Coopersmith <alan.coopersmith@oracle.com>
Signed-off-by: Alan Coopersmith <alan.coopersmith@oracle.com>
On a system where sizeof(unsigned) != sizeof(intptr_t), the unary
bitwise not operation will result in a mask that clears all high bits
from temp_buf in the expression:
temp_buf = (temp_buf + mask) & ~mask;
Signed-off-by: Robert Morell <rmorell@nvidia.com>
Reviewed-by: Alan Coopersmith <alan.coopersmith@oracle.com>
Signed-off-by: Alan Coopersmith <alan.coopersmith@oracle.com>
v2: Handle more multiplies in indirect_reqsize.c (Julien Cristau)
Reviewed-by: Julien Cristau <jcristau@debian.org>
Reviewed-by: Michal Srb <msrb@suse.com>
Reviewed-by: Andy Ritger <aritger@nvidia.com>
Signed-off-by: Adam Jackson <ajax@redhat.com>
Signed-off-by: Alan Coopersmith <alan.coopersmith@oracle.com>
v2:
Fix single versus vendor-private length checking for ARB_imaging subset
extensions. (Julien Cristau)
v3:
Fix single versus vendor-private length checking for ARB_imaging subset
extensions. (Julien Cristau)
Reviewed-by: Michal Srb <msrb@suse.com>
Reviewed-by: Andy Ritger <aritger@nvidia.com>
Signed-off-by: Adam Jackson <ajax@redhat.com>
Signed-off-by: Julien Cristau <jcristau@debian.org>
Signed-off-by: Alan Coopersmith <alan.coopersmith@oracle.com>
Reviewed-by: Keith Packard <keithp@keithp.com>
Reviewed-by: Michal Srb <msrb@suse.com>
Reviewed-by: Andy Ritger <aritger@nvidia.com>
Signed-off-by: Adam Jackson <ajax@redhat.com>
Signed-off-by: Alan Coopersmith <alan.coopersmith@oracle.com>
Reviewed-by: Keith Packard <keithp@keithp.com>
Reviewed-by: Julien Cristau <jcristau@debian.org>
Reviewed-by: Michal Srb <msrb@suse.com>
Reviewed-by: Andy Ritger <aritger@nvidia.com>
Signed-off-by: Adam Jackson <ajax@redhat.com>
Signed-off-by: Alan Coopersmith <alan.coopersmith@oracle.com>
Reviewed-by: Keith Packard <keithp@keithp.com>
Reviewed-by: Julien Cristau <jcristau@debian.org>
Reviewed-by: Michal Srb <msrb@suse.com>
Reviewed-by: Andy Ritger <aritger@nvidia.com>
Signed-off-by: Adam Jackson <ajax@redhat.com>
Signed-off-by: Alan Coopersmith <alan.coopersmith@oracle.com>
This is a half-measure until we start passing request length into the
varsize function, but it's better than the nothing we had before.
v2: Verify that there's at least a large render header's worth of
dataBytes (Julien Cristau)
Reviewed-by: Michal Srb <msrb@suse.com>
Reviewed-by: Andy Ritger <aritger@nvidia.com>
Signed-off-by: Adam Jackson <ajax@redhat.com>
Signed-off-by: Alan Coopersmith <alan.coopersmith@oracle.com>
v2:
Fix constants in __glXMap2fReqSize (Michal Srb)
Validate w/h/d for proxy targets too (Keith Packard)
v3:
Fix Map[12]Size to correctly reject order == 0 (Julien Cristau)
Reviewed-by: Keith Packard <keithp@keithp.com>
Reviewed-by: Michal Srb <msrb@suse.com>
Reviewed-by: Andy Ritger <aritger@nvidia.com>
Signed-off-by: Adam Jackson <ajax@redhat.com>
Signed-off-by: Alan Coopersmith <alan.coopersmith@oracle.com>
v2:
Remove can't-happen comparison for cmdlen < 0 (Michal Srb)
Reviewed-by: Adam Jackson <ajax@redhat.com>
Reviewed-by: Michal Srb <msrb@suse.com>
Reviewed-by: Andy Ritger <aritger@nvidia.com>
Signed-off-by: Julien Cristau <jcristau@debian.org>
Signed-off-by: Alan Coopersmith <alan.coopersmith@oracle.com>
These are paranoid about integer overflow, and will return -1 if their
operation would overflow a (signed) integer or if either argument is
negative.
Note that RenderLarge requests are sized with a uint32_t so in principle
this could be sketchy there, but dix limits bigreqs to 128M so you
shouldn't ever notice, and honestly if you're sending more than 2G of
rendering commands you're already doing something very wrong.
v2: Use INT_MAX for consistency with the rest of the server (jcristau)
v3: Reject negative arguments (anholt)
Reviewed-by: Keith Packard <keithp@keithp.com>
Reviewed-by: Julien Cristau <jcristau@debian.org>
Reviewed-by: Michal Srb <msrb@suse.com>
Reviewed-by: Andy Ritger <aritger@nvidia.com>
Signed-off-by: Adam Jackson <ajax@redhat.com>
Signed-off-by: Alan Coopersmith <alan.coopersmith@oracle.com>
Without this we'd reject the request with BadLength. Note that some old
versions of Mesa had a bug in the same place, and would _send_ zero
bytes of image data; these will now be rejected, correctly.
Reviewed-by: Keith Packard <keithp@keithp.com>
Reviewed-by: Julien Cristau <jcristau@debian.org>
Reviewed-by: Michal Srb <msrb@suse.com>
Reviewed-by: Andy Ritger <aritger@nvidia.com>
Signed-off-by: Adam Jackson <ajax@redhat.com>
Signed-off-by: Alan Coopersmith <alan.coopersmith@oracle.com>
If the computed reply size is negative, something went wrong, treat it
as an error.
v2: Be more careful about size_t being unsigned (Matthieu Herrb)
v3: SIZE_MAX not SIZE_T_MAX (Alan Coopersmith)
Reviewed-by: Julien Cristau <jcristau@debian.org>
Reviewed-by: Michal Srb <msrb@suse.com>
Reviewed-by: Andy Ritger <aritger@nvidia.com>
Signed-off-by: Adam Jackson <ajax@redhat.com>
Signed-off-by: Alan Coopersmith <alan.coopersmith@oracle.com>
Before this we'd just clamp the image size to 0, which was just
hideously stupid; if the parameters were such that they'd overflow an
integer, you'd allocate a small buffer, then pass huge values into (say)
ReadPixels, and now you're scribbling over arbitrary server memory.
Reviewed-by: Keith Packard <keithp@keithp.com>
Reviewed-by: Julien Cristau <jcristau@debian.org>
Reviewed-by: Michal Srb <msrb@suse.com>
Reviewed-by: Andy Ritger <aritger@nvidia.com>
Signed-off-by: Adam Jackson <ajax@redhat.com>
Signed-off-by: Alan Coopersmith <alan.coopersmith@oracle.com>
If the size computation routine returns -1 we should just reject the
request outright. Clamping it to zero could give an attacker the
opportunity to also mangle cmdlen in such a way that the subsequent
length check passes, and the request would get executed, thus passing
data we wanted to reject to the renderer.
Reviewed-by: Keith Packard <keithp@keithp.com>
Reviewed-by: Julien Cristau <jcristau@debian.org>
Reviewed-by: Michal Srb <msrb@suse.com>
Reviewed-by: Andy Ritger <aritger@nvidia.com>
Signed-off-by: Adam Jackson <ajax@redhat.com>
Signed-off-by: Alan Coopersmith <alan.coopersmith@oracle.com>
With the previous patches applied, we now have crash due to use-after-free when
a client exits without deleting all it's GL contexts
On client exit, CloseDownClient first calls glxClientCallback() with
ClientStateGone, which calls __glXFreeContext() directly.
Subsequently CloseDownClient() frees all the clients resources, which leads to
ContextGone() being called for a context resource where the context has already
been freed.
Fix this by modifiying glxClientCallback() to free the context resource.
Also make __glXFreeContext() static, as calling it directly leads to this
problem, instead the context resource should be released.
With the previous patches applied, this can be demonstrated with e.g. glxinfo,
which doesn't delete it's context before exit.
Signed-off-by: Jon TURNEY <jon.turney@dronecode.org.uk>
Reviewed-by: Adam Jackson <ajax@redhat.com>
Some sequences of glean tests fail with GLXBadCurrentWindow when using indirect
rendering, e.g. glean -t 'fpexceptions getString'.
Flush a context which is being made non-current due to the drawable on which is
it is current going away. Waiting until another context is made current is too
late, as the drawable no longer exists.
v2: Rewrite for direct GL dispatch
v3: Inline FlushContext(), doesn't need to be a separate function
e.g. LIBGL_ALWAYS_INDIRECT=1 ./glean -r results -o --quick -t "fpexceptions
getString" fails with a BadContextTag error.
Signed-off-by: Jon TURNEY <jon.turney@dronecode.org.uk>
Reviewed-by: Adam Jackson <ajax@redhat.com>
This reverts commit 7f5adf73a0.
This seems to miss the whole point of the idExists flag, as it makes the
lifetime of that being true the same as the lifetime of the Context resource.
The previously current context tag is always given in a MakeContextCurrent
request, even if that context tag is no longer valid (for example, the context
has been deleted), so this leads to BadContextTag errors.
See fd.o bug #30089 for the makecurrenttest.c testcase, and some discussion of
previous manifestations of this bug.
Signed-off-by: Jon TURNEY <jon.turney@dronecode.org.uk>
Reviewed-by: Adam Jackson <ajax@redhat.com>
ctx_attribs had room for 3 pairs of attributes, but if both flags & reset
attributes were being returned it was storing 4 pairs in the array.
Found by Coverity #53442: Out-of-bounds write
This could cause an immediate crash or incorrect computations.
In create_driver_context: Out-of-bounds write to a buffer (CWE-119)
Signed-off-by: Alan Coopersmith <alan.coopersmith@oracle.com>
Reviewed-by: Adam Jackson <ajax@redhat.com>
Signed-off-by: Keith Packard <keithp@keithp.com>
This function can return NULL; make sure every caller tests for that.
Reviewed-by: Adam Jackson <ajax@redhat.com>
Signed-off-by: Keith Packard <keithp@keithp.com>
Present didn't provide the 'kind' argument to the
present_complete_notify hook that GLX uses to construct
GLX_BufferSwapComplete events, so GLX was reporting events for
PresentCompleteKindMSC notifications, which resulted in duplicate
GLX_BufferSwapComplete events and crashes in clutter.
See the gnome bug: https://bugzilla.gnome.org/show_bug.cgi?id=733282
Signed-off-by: Keith Packard <keithp@keithp.com>
Reviewed-by: Eric Anholt <eric@anholt.net>
Mesa no longer supports rendering to anything less. GLX 1.2 requires
that the server advertise at least one GLX visual. GLX 1.3 and 1.4 are
more subtle: they require at least one fbconfig capable of window
rendering, and _also_ require that window-capable fbconfigs have a
non-zero value for the GLX_VISUAL_ID. In either case we should refuse
to init GLX if there's not at least one GL-capable visual on at least
one screen.
Signed-off-by: Adam Jackson <ajax@redhat.com>
Signed-off-by: Keith Packard <keithp@keithp.com>
The attack surface for indirect GLX is huge, and it's of no use to
most people (if you get an indirect GL context, you're better served
by a immediate X error than actually trying to use an indirect GL
context and finding out that it doesn't support doing anything you
want, slowly). This flag gives you a chance to disable indirect GLX
in environments where you just don't need it.
I put in both the '+' and '-' arguments right now, so that it's easy
to patch the value to change the default policy.
Signed-off-by: Eric Anholt <eric@anholt.net>
Acked-by: Julien Cristau <jcristau@debian.org>
Reviewed-by: Keith Packard <keithp@keithp.com>
Signed-off-by: Keith Packard <keithp@keithp.com>
By changing the context, it may also invalidate the DRI2 buffer
information, so we need to get that again.
Fixes crashes due to use-after-free with LIBGL_ALWAYS_INDIRECT=1
glxgears and piglit.
Signed-off-by: Michel Dänzer <michel.daenzer@amd.com>
Signed-off-by: Eric Anholt <eric@anholt.net>
Reviewed-by: Eric Anholt <eric@anholt.net>
Reviewed-by: Adam Jackson <ajax@redhat.com>
These functions are called from the GL driver, in some series of GL
calls by GLX. If some server component (like glamor CreatePixmap for
GetBuffers()) changes the GL context on us, we need to set it back or
the later GL calls will land in the glamor context instead of the GLX
context.
Signed-off-by: Eric Anholt <eric@anholt.net>
Reviewed-by: Michel Dänzer <michel.daenzer@amd.com>
Reviewed-by: Adam Jackson <ajax@redhat.com>
I needed to add some code to each one, so it's a good time to make a
helper func.
Signed-off-by: Eric Anholt <eric@anholt.net>
Reviewed-by: Michel Dänzer <michel.daenzer@amd.com>
Reviewed-by: Adam Jackson <ajax@redhat.com>
This hook calls unbindContext in the DRI driver interface, which
unsets the dispatch table, regardless of whether the context argument
was the current one or not.
Signed-off-by: Eric Anholt <eric@anholt.net>
Reviewed-by: Michel Dänzer <michel.daenzer@amd.com>
Reviewed-by: Adam Jackson <ajax@redhat.com>
We want to make sure that lastGLContext is set correctly during
makeCurrent, because we may have recursive GL context changes in the
DRI2 interfaces due to glamor.
Signed-off-by: Eric Anholt <eric@anholt.net>
Reviewed-by: Michel Dänzer <michel.daenzer@amd.com>
Reviewed-by: Adam Jackson <ajax@redhat.com>
GLX is trying to track whether the context it wants is current, to
avoid the glFlush() (and the rest of the overhead) that occurs on all
MakeCurrent calls. However, its cache can be incorrect now that
glamor exists. This is a step toward getting glamor to coordinate
with GLX.
Signed-off-by: Eric Anholt <eric@anholt.net>
Reviewed-by: Michel Dänzer <michel.daenzer@amd.com>
Reviewed-by: Adam Jackson <ajax@redhat.com>
The visualSelectGroup wasn't getting set (since our DRI drivers don't
use it), and and since it's the top priority in the sort order, you
got random sorting of your visuals unless malloc really returned you
new memory. This manifested as Xephyr -glamor rendering to a
multisampled window on my system, which as you might guess was
slightly lower performance than expected.
Signed-off-by: Eric Anholt <eric@anholt.net>
Reviewed-by: Michel Dänzer <michel.daenzer@amd.com>
Fixes Solaris Studio compiler warning & error:
"glxext.c", line 557: warning: assignment type mismatch:
pointer to void "=" pointer to function(void) returning void
"glxext.c", line 559: error: operands have incompatible types:
pointer to void ":" pointer to function(void) returning void
Signed-off-by: Alan Coopersmith <alan.coopersmith@oracle.com>
Signed-off-by: Keith Packard <keithp@keithp.com>
These have been throwing a compiler warning about missing prototypes,
since the generated code to define the prototypes stopped being
generated (possibly because the code was dead).
Signed-off-by: Eric Anholt <eric@anholt.net>
Reviewed-by: Adam Jackson <ajax@redhat.com>
Signed-off-by: Keith Packard <keithp@keithp.com>
They're not officially in the ABI, so you shouldn't use them anyway.
Signed-off-by: Eric Anholt <eric@anholt.net>
Reviewed-by: Adam Jackson <ajax@redhat.com>
Signed-off-by: Keith Packard <keithp@keithp.com>
In theory, the linux libGL ABI exposes just GL 1.2 plus GLX 1.3. But,
thanks to libglapi, we're letting glGetCompressedTexImageARB() be
exposed too. The GLX code was inappropriately relying on it by using
GL_GLEXT_PROTOTYPES.
Signed-off-by: Eric Anholt <eric@anholt.net>
Reviewed-by: Adam Jackson <ajax@redhat.com>
Signed-off-by: Keith Packard <keithp@keithp.com>
Commit be668096 "glx: convert to direct GL dispatch (v2)" removes glthread.c
from Makefile.am along with the rest of the dispatch table code, but doesn't
remove glthread.c itself.
Signed-off-by: Jon TURNEY <jon.turney@dronecode.org.uk>
Reviewed-by: Eric Anholt <eric@anholt.net>
Reviewed-by: Adam Jackson <ajax@redhat.com>
Signed-off-by: Keith Packard <keithp@keithp.com>
This lets us stop using the 'pointer' typedef in Xdefs.h as 'pointer'
is used throughout the X server for other things, and having duplicate
names generates compiler warnings.
Signed-off-by: Keith Packard <keithp@keithp.com>
Reviewed-by: Eric Anholt <eric@anholt.net>
We can't remove all the ifdefs (__DRI_TEX_BUFFER_VERSION) because
configure.ac is only checking for that version of Mesa in the absence
of dri2.
Reviewed-by: Ian Romanick <ian.d.romanick@intel.com>
Thanks to configure.ac's check, we know that we have a new enough
dri_interface.h that we don't need to conditionalize all this code.
Reviewed-by: Ian Romanick <ian.d.romanick@intel.com>
This can't happen when GLX is the backing window system, but can
elsewhere. We may as well protect against it at a high level.
Reviewed-by: Eric Anholt <eric@anholt.net>
Signed-off-by: Adam Jackson <ajax@redhat.com>
At the moment we have a mix of ARB and non-ARB suffixed forms for ARB_multitexture functions
e.g. glMultiTexCoord1fvARB and glMultiTexCoord1dv
Consistently use the ARB-suffixed form, assuming that is present in all libGL
which provide the OpenGL 1.2.1 ABI we expect to be able to directly link with.
Signed-off-by: Jon TURNEY <jon.turney@dronecode.org.uk>
Reviewed-by: Adam Jackson <ajax@redhat.com>
