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authorwm4 <wm4@nowhere>2020-05-13 22:46:29 +0200
committerwm4 <wm4@nowhere>2020-05-13 22:46:29 +0200
commit97706a2aec04bc91b8ac4d7c2fa3549d44ccc661 (patch)
tree350b0f643e740046f8a3a4380b654f51939f7c31
parentb36484063f1dcf7928f848e78572d1e5d1d5a62b (diff)
downloadmpv-97706a2aec04bc91b8ac4d7c2fa3549d44ccc661.tar.bz2
mpv-97706a2aec04bc91b8ac4d7c2fa3549d44ccc661.tar.xz
draw_bmp: make another small guarantee to users
Mostly self-evident.
-rw-r--r--sub/draw_bmp.h2
1 files changed, 2 insertions, 0 deletions
diff --git a/sub/draw_bmp.h b/sub/draw_bmp.h
index 90e0ef6368..e9560e1ca5 100644
--- a/sub/draw_bmp.h
+++ b/sub/draw_bmp.h
@@ -31,6 +31,8 @@ char *mp_draw_sub_get_dbg_info(struct mp_draw_sub_cache *c);
// rectangles are regions that were changed since the last call. This function
// always makes the act region a subset of the mod region. Rectangles within a
// list never overlap with rectangles within the same list.
+// If num_mod_rcs==0 is returned, this function guarantees that the act region
+// did not change since the last call.
// If the user-provided lists are too small (max_*_rcs too small), multiple
// rectangles are merged until they fit in the list.
// You can pass max_act_rcs=0, which implies you render the whole overlay.