extinit: document why no*Extension fields need to be exported.
Usually no*Extension fields shouldn't be needed by drivers, but there are a few exceptions: some drivers need to know whether composite or Xinerama are active. Signed-off-by: Enrico Weigelt, metux IT consult <info@metux.net>
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@ -53,8 +53,10 @@ OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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#include "extnsionst.h"
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/* required by: libglx */
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extern _X_EXPORT Bool noCompositeExtension;
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/* required by: several video drivers (eg. vmware and sis) */
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#ifdef XINERAMA
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extern _X_EXPORT Bool noPanoramiXExtension;
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#endif /* XINERAMA */
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