Unlike the legacy CreateContext path, we would try to send the
GLXCreateContextAttribs request regardless of whether we'd successfully
created the client context state. And there's not a lot on the server
side to go wrong besides BadAlloc, so if the request succeeded but
the client side didn't we'd need to destroy the server context and
synthesize an X error. Since that itself involves more X protocol it's
tricky to get the request number right in the error, and tests and apps
can notice when you get it wrong.
Since we have now fixed client-side validation to generate the right
errors at the right times, this patch does something simpler, we match
CreateContext and fail early if the client-side setup fails. Now there's
no question of what request number to use, because we haven't sent any
protocol, the error is for the request as if it'd been sent.
Closes: https://gitlab.freedesktop.org/mesa/mesa/-/issues/4763
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/12006>
Some applications may request an indirect context but this feature is
disabled by default on Xorg and thus context creation will fail.
This commit adds a drirc setting to force the creation of direct glx
context, regardless of what the app is requesting.
Reviewed-by: Adam Jackson <ajax@redhat.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/13246>
This is Sort Of handled by nerfing GL_VERSION in __indirect_glGetString,
but that doesn't cover GLES contexts which we also don't have any
indirect support for. Xorg's GLX would reject this for us since it has
the same limitation, but NVIDIA's GLX seems to interpret a request for
ES 2.0 as desktop, despite having the ES2 profile bit set, leading to a
very confusing GL_VERSION string and probably not the ES2-compatible
context you were hoping for.
Since we may now return NULL from indirect_create_context_attribs for
reasons other than malloc failure, we need to reasonably handle the case
where gc == NULL by the time we get to the XCB call. We rely on the
server to generate correct return values in this case, but if it
succeeds despite our client-side failure we just throw GLXBadFBConfig
(chosen to keep piglit/glx-create-context-core-profile happy, since
nothing else seems to hit it).
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/7369>
v2 (idr): Open-code the check for GLX_RENDER_TYPE.
dri2_convert_glx_attribs can't be called from here because that function
only exists in direct-rendering builds. Also add a stub version of
indirect_create_context_attribs to tests/fake_glx_screen.cpp to prevent
'make check' regressions.
Signed-off-by: Tomasz Lis <tomasz.lis@intel.com>
Signed-off-by: Ian Romanick <ian.d.romanick@intel.com>
Reviewed-by: Ian Romanick <ian.d.romanick@intel.com>
Without that, people with buggy apps that looked at just the server
string for GLX_ARB_create_context would call this function that just
threw an error when you tried to make a context. Google shows plenty
of complaints about this.
Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
Reviewed-by: Ian Romanick <ian.d.romanick@intel.com>
Detect whether a new enough version of XCB is installed at configure
time. If it is not, don't enable the extension and don't build the
unit tests.
v2: Move the AM_CONDIATION outside the case-statement so that it is
invoked even for non-GLX builds. This prevents build failures with
osmesa, for example.
Signed-off-by: Ian Romanick <ian.d.romanick@intel.com>
Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
Tested-by: Robert Hooker <robert.hooker@canonical.com>
A lot of tests in 'make check' will fail under these circumstances,
but at least the build should work.
Signed-off-by: Ian Romanick <ian.d.romanick@intel.com>
Reviewed-by: Dave Airlie <airlied@redhat.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
