Add preliminary damage tracking

This is initially based around the requirements for handling internal
fallbacks to the image compositor and reducing the number of pixels
required to be transferred.

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>

1 files changed, 1 insertions, 0 deletions

diff --git a/src/cairo-types-private.h b/src/cairo-types-private.h
index 2fdd0a19a..3a1882be9 100644
--- a/src/cairo-types-private.h
+++ b/src/cairo-types-private.h
@@ -66,6 +66,7 @@ typedef struct _cairo_color_stop cairo_color_stop_t;
 typedef struct _cairo_contour cairo_contour_t;
 typedef struct _cairo_contour_chain cairo_contour_chain_t;
 typedef struct _cairo_contour_iter cairo_contour_iter_t;
+typedef struct _cairo_damage cairo_damage_t;
 typedef struct _cairo_device_backend cairo_device_backend_t;
 typedef struct _cairo_font_face_backend     cairo_font_face_backend_t;
 typedef struct _cairo_gstate cairo_gstate_t;