compositor: Add surface-to-buffer and buffer-to-surface matrices
Add matrix representations of these two transformations. Future patches
will leverage these to simplify the coordinate transformation code.
[Pekka: commit message]
Reviewed-by: Pekka Paalanen <pekka.paalanen@collabora.co.uk>
Reviewed-By: Derek Foreman <derekf@osg.samsung.com>
Reviewed-by: Jason Ekstrand <jason@jlekstrand.net>
diff --git a/src/compositor.h b/src/compositor.h
index 207767e..ead03ae 100644
--- a/src/compositor.h
+++ b/src/compositor.h
@@ -926,6 +926,12 @@
/* All the pending state, that wl_surface.commit will apply. */
struct weston_surface_state pending;
+ /* Matrices representating of the full transformation between
+ * buffer and surface coordinates. These matrices are updated
+ * using the weston_surface_build_buffer_matrix function. */
+ struct weston_matrix buffer_to_surface_matrix;
+ struct weston_matrix surface_to_buffer_matrix;
+
/*
* If non-NULL, this function will be called on
* wl_surface::commit after a new buffer has been set up for