[cairo] [patch] XCopyArea fast path
graydon at redhat.com
Tue May 18 07:51:08 PDT 2004
this patch adds a fast path to the xlib backend to call XCopyArea when
it detects a "surface showing" operation with no mask and a SRC
compositing operator. this is handy when doing double buffered drawing
with cairo, as I can have cairo composite the final "image".
to accomodate this change, two macros for reasoning about cairo fixed
point values were moved from cairo_gstate.c to cairoint.h, and the xlib
clipping function was augmented to set the drawable's clip as well as
the previously-set picture clip.
ok to commit?
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