util/region: constify

1 files changed, 6 insertions, 6 deletions

diff --git a/include/wlr/util/region.h b/include/wlr/util/region.h
index deecac0a..c3f1cbe8 100644
--- a/include/wlr/util/region.h
+++ b/include/wlr/util/region.h
@@ -26,33 +26,33 @@
  * The resulting coordinates are rounded up or down so that the new region is
  * at least as big as the original one.
  */
-void wlr_region_scale(pixman_region32_t *dst, pixman_region32_t *src,
+void wlr_region_scale(pixman_region32_t *dst, const pixman_region32_t *src,
 	float scale);
 
-void wlr_region_scale_xy(pixman_region32_t *dst, pixman_region32_t *src,
+void wlr_region_scale_xy(pixman_region32_t *dst, const pixman_region32_t *src,
 	float scale_x, float scale_y);
 
 /**
  * Applies a transform to a region inside a box of size `width` x `height`.
  */
-void wlr_region_transform(pixman_region32_t *dst, pixman_region32_t *src,
+void wlr_region_transform(pixman_region32_t *dst, const pixman_region32_t *src,
 	enum wl_output_transform transform, int width, int height);
 
 /**
  * Expands the region of `distance`. If `distance` is negative, it shrinks the
  * region.
  */
-void wlr_region_expand(pixman_region32_t *dst, pixman_region32_t *src,
+void wlr_region_expand(pixman_region32_t *dst, const pixman_region32_t *src,
 	int distance);
 
 /*
  * Builds the smallest possible region that contains the region rotated about
  * the point (ox, oy).
  */
-void wlr_region_rotated_bounds(pixman_region32_t *dst, pixman_region32_t *src,
+void wlr_region_rotated_bounds(pixman_region32_t *dst, const pixman_region32_t *src,
 	float rotation, int ox, int oy);
 
-bool wlr_region_confine(pixman_region32_t *region, double x1, double y1, double x2,
+bool wlr_region_confine(const pixman_region32_t *region, double x1, double y1, double x2,
 	double y2, double *x2_out, double *y2_out);
 
 #endif