It's a little unclear from the GLX_ARB_create_context spec whether the
list of supported extensions means what the client supports at all, or
what it knows an indirect GLX encoding for. You'd think it could only
really matter for indirect, since the only way the server would know
about GL commands (as opposed to GLX commands) is if the context was
indirect. And indeed for Xorg's GLX it doesn't matter, because it
doesn't check this, assuming that anything a direct client says works
works, and clamping the GL version based on the protocol it has code
for.
But if you're NVIDIA, apparently, you check this even for direct
contexts. And since drisw creates a nominally "direct" context, this
means llvmpipe and friends get clamped to 3.0 for desktop GL (since
that's as far as the protocol is defined) and can't do GLES at all.
So, whatever, just go ahead and claim to support everything. The wire
representation of the supported versions is strange (see comments in the
code) but it matches what NVIDIA does.
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/7369>
These calls allowed Xlib to use a custom memory allocator, but Xlib has
used the standard C library functions since at least its initial import
into git in 2003. It seems unlikely that it will grow a custom memory
allocator. The functions now just add extra overhead. Replacing them
will make future Coccinelle patches simpler.
This patch has been generated by the following Coccinelle semantic
patch:
// Remove Xcalloc/Xmalloc/Xfree calls
@@ expression E1, E2; @@
- Xcalloc (E1, E2)
+ calloc (E1, E2)
@@ expression E; @@
- Xmalloc (E)
+ malloc (E)
@@ expression E; @@
- Xfree (E)
+ free (E)
@@ expression E; @@
- XFree (E)
+ free (E)
Reviewed-by: Brian Paul <brianp@vmware.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>
Fix 'set but not used' warnings; gl_version, gl_versions_profiles and
glx_extensions variables are used just only HAVE_XCB_GLX_CREATE_CONTEXT
is defined. Thus those warnings are shown when that macro isn't defined.
Signed-off-by: Yuanhan Liu <yuanhan.liu@linux.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>
This function picks the correct client-info protocol (based on the
server's GLX version and set of extensions) and sends it to the
server.
Signed-off-by: Ian Romanick <ian.d.romanick@intel.com>
Adam Jackson
Juha-Pekka Heikkila
Matt Turner
Eric Anholt
Yuanhan Liu
Ian Romanick