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47 lines
2.2 KiB
Plaintext
47 lines
2.2 KiB
Plaintext
The compositor is the box of tricks inside the window manager which performs
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special effects on the windows on your screen. Metacity's window manager is
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under development. Your help is requested in finding and fixing bugs. This
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document tells you how to configure Metacity so that you can use compositing.
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To turn the compositor on initially, you need to pass --enable-compositor to
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the configure script. This will introduce a dependence on libcm, which you
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can get from <URL:http://ftp.gnome.org/pub/GNOME/sources/libcm/>.
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When Metacity is compiled, you will need to turn the compositor on in gconf
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for it to have any effect. You will find the boolean switch at
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/apps/metacity/general/compositing_manager
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When that's done, you can set some environment variables before you launch
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Metacity to influence how the compositor works. These will eventually become
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configuration options or gconf options when they grow up. Define them to any
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value to turn them on; leave them undefined to turn them off. Currently the
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options you can set are:
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LIBCM_DIRECT
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If this is set, the compositor will bypass the X server and do all its
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work directly with the hardware. I know of no reason you would want to
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do so, but perhaps you do.
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LIBCM_TFP
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If this is set ("tfp mode"), the compositor will feel free to use the
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texture_from_pixmap extension; if this is not set ("non-tfp mode"), the
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compositor will use a workaround. Many drivers require non-tfp mode in
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order to work, and will paint all windows clear blue or clear white
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without it. Thanks to Travis Watkins for suggesting this switch; he
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cautions that some games or video players may require tfp mode.
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METACITY_BLING
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This turns on several pretty but non-essential animations (dialogues
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fracturing and exploding, minimisations doing a shrinkydink effect,
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and so on). If it is not set, the standard non-GL animations are
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retained. This affects only window event animations; it doesn't change
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menus zooming, dialogues being semi-transparent, and so on. Try it
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and see whether you like it.
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If you have any problems, ask on metacity-devel-list@gnome.org, or
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#gnome-hackers on gimpnet, or come and find me (tthurman at gnome) and ask.
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