a506b4ecb6
`glGetString(GL_VERSION)` will return NULL without a current context. Commitdabc7d8b(“xwayland: Fall back to GLES2 if we don't get at least GL 2.1 in glamor”) would check the context is created, but it is made current just after, so the call to `epoxy_gl_version()` would return 0, hence defeating the version check. Make the context current prior to call `epoxy_gl_version()`. Fixes:dabc7d8b- xwayland: Fall back to GLES2 if we don't get at least GL 2.1 in glamor Closes: https://gitlab.freedesktop.org/xorg/xserver/issues/932 https://gitlab.freedesktop.org/xorg/xserver/merge_requests/324 Signed-off-by: Olivier Fourdan <ofourdan@redhat.com>
X Server
The X server accepts requests from client applications to create windows, which are (normally rectangular) "virtual screens" that the client program can draw into.
Windows are then composed on the actual screen by the X server (or by a separate composite manager) as directed by the window manager, which usually communicates with the user via graphical controls such as buttons and draggable titlebars and borders.
For a comprehensive overview of X Server and X Window System, consult the following article: https://en.wikipedia.org/wiki/X_server
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