xlib, xcb: Hand off EXTEND_PAD/EXTEND_REFLECT to Render

Most drivers and the X server used to have incorrect RepeatPad/RepeatReflect
implementations, forcing cairo to fall back to client-side software rendering,
which is painfully slow due to pixmaps being transfered over the wire.  These
issues are mostly fixed in the drivers (with the exception of radeonhd, whose
developers didn't respond) and the RepeatPad software fallback is implemented
correctly as of pixman-0.15.0, so this patch will hand off composite operations
with EXTEND_PAD/EXTEND_REFLECT source patterns to XRender.

There is no way to detect whether the X server or the drivers use a
broken Render implementation, we make a guess based on the server
version:  It's probably safe to assume that 1.7 X servers will use
fixed drivers and a recent enough version of pixman.

1 files changed, 1 insertions, 0 deletions

diff --git a/src/cairo-xlib-surface-private.h b/src/cairo-xlib-surface-private.h
index fe37e5fbd..164fe15f2 100644
--- a/src/cairo-xlib-surface-private.h
+++ b/src/cairo-xlib-surface-private.h
@@ -76,6 +76,7 @@ struct _cairo_xlib_surface {
      * we can reuse the test for now.
      */
     cairo_bool_t buggy_repeat;
+    cairo_bool_t buggy_pad_reflect;
 
     int width;
     int height;