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For direct contexts, most context attributes don't require any particular awareness on the part of the server. Examples include GLX_ARB_create_context_no_error and GLX_ARB_context_flush_control, where all of the behavior change lives in the renderer; since that's on the client side for a direct context, there's no reason for the X server to validate the attribute. The context attributes will still be validated on the client side, and we still validate attributes for indirect contexts since the server implementation might need to handle them. For example, the indirect code might internally use ARB_context_flush_control for all contexts, in which case it would need to manually emit glFlush when the client switches between two indirect contexts that didn't request the no-flush attribute. Signed-off-by: Adam Jackson <ajax@redhat.com> Reviewed-by: Eric Anholt <eric@anholt.net>
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
All questions regarding this software should be directed at the
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Please submit bug reports to the Xorg bugzilla:
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The master development code repository can be found at:
git://anongit.freedesktop.org/git/xorg/xserver
https://cgit.freedesktop.org/xorg/xserver
For patch submission instructions, see:
https://www.x.org/wiki/Development/Documentation/SubmittingPatches
For more information on the git code manager, see:
https://wiki.x.org/wiki/GitPage
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https://www.freedesktop.org/wiki/CodeOfConduct