3f3c489e51
We cover all Render ops under the "blend" group, so when we're doing the cross products of some formats for the masking operation, skip most of the ops (covering just zero, one, and src/dst alpha blend factors along with a definitely non-glamor-accelerated one) . All the tests now complete in <20s of runtime on my skylake. Signed-off-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
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