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-rw-r--r--backend/drm/atomic.c4
1 files changed, 2 insertions, 2 deletions
diff --git a/backend/drm/atomic.c b/backend/drm/atomic.c
index acc56e65..41b6424c 100644
--- a/backend/drm/atomic.c
+++ b/backend/drm/atomic.c
@@ -83,8 +83,8 @@ static void set_plane_props(struct atomic *atom, struct wlr_drm_plane *plane,
// The src_* properties are in 16.16 fixed point
atomic_add(atom, id, props->src_x, 0);
atomic_add(atom, id, props->src_y, 0);
- atomic_add(atom, id, props->src_w, plane->surf.width << 16);
- atomic_add(atom, id, props->src_h, plane->surf.height << 16);
+ atomic_add(atom, id, props->src_w, (uint64_t)plane->surf.width << 16);
+ atomic_add(atom, id, props->src_h, (uint64_t)plane->surf.height << 16);
atomic_add(atom, id, props->crtc_w, plane->surf.width);
atomic_add(atom, id, props->crtc_h, plane->surf.height);
atomic_add(atom, id, props->fb_id, fb_id);