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-rw-r--r--src/compositor.c4
1 files changed, 2 insertions, 2 deletions
diff --git a/src/compositor.c b/src/compositor.c
index 94e1b9ff..83a53916 100644
--- a/src/compositor.c
+++ b/src/compositor.c
@@ -2708,10 +2708,10 @@ weston_surface_commit_subsurface_order(struct weston_surface *surface)
}
static void
-weston_surface_build_buffer_matrix(struct weston_surface *surface,
+weston_surface_build_buffer_matrix(const struct weston_surface *surface,
struct weston_matrix *matrix)
{
- struct weston_buffer_viewport *vp = &surface->buffer_viewport;
+ const struct weston_buffer_viewport *vp = &surface->buffer_viewport;
double src_width, src_height, dest_width, dest_height;
weston_matrix_init(matrix);