compositor: Document options for headless compositor
Signed-off-by: Bryce Harrington <bryce@osg.samsung.com>
[Pekka: s/Wayland surface/memory surface/, and say default renderer.]
Signed-off-by: Pekka Paalanen <pekka.paalanen@collabora.co.uk>
diff --git a/src/compositor.c b/src/compositor.c
index 0db6d73..17e930c 100644
--- a/src/compositor.c
+++ b/src/compositor.c
@@ -4595,6 +4595,16 @@
"\n");
#endif
+#if defined(BUILD_HEADLESS_COMPOSITOR)
+ fprintf(stderr,
+ "Options for headless-backend.so:\n\n"
+ " --width=WIDTH\t\tWidth of memory surface\n"
+ " --height=HEIGHT\tHeight of memory surface\n"
+ " --transform=TR\tThe output transformation, TR is one of:\n"
+ "\tnormal 90 180 270 flipped flipped-90 flipped-180 flipped-270\n"
+ " --use-pixman\t\tUse the pixman (CPU) renderer (default: no rendering)\n\n");
+#endif
+
exit(error_code);
}