Currently these are always false, but if XRender use a pixman that supports filtering these could be turned on for that version.
ca9aee4 xcb: Add switches for whether XRender supports GOOD/BEST filtering
src/cairo-xcb-connection.c | 10 ++++++++++
src/cairo-xcb-private.h | 6 +++++-
2 files changed, 15 insertions(+), 1 deletion(-)
Upstream: cgit.freedesktop.org