From 8a71b9ded31ba392f27e1710357b972a2f00ef9c Mon Sep 17 00:00:00 2001
From: Gleb Mazovetskiy <glex.spb@gmail.com>
Date: Wed, 15 Sep 2021 23:35:42 +0100
Subject: [PATCH] libsmacker: Add `smk_palette_updated` changes

This is a DevilutionX-specific patch to enable efficient rendering
---
 3rdParty/libsmacker/smacker.c | 5 +++++
 3rdParty/libsmacker/smacker.h | 3 +++
 2 files changed, 8 insertions(+)

diff --git a/3rdParty/libsmacker/smacker.c b/3rdParty/libsmacker/smacker.c
index eef6e7b75..206c3fdd5 100644
--- a/3rdParty/libsmacker/smacker.c
+++ b/3rdParty/libsmacker/smacker.c
@@ -1795,3 +1795,8 @@ char smk_seek_keyframe(smk s, unsigned long f)
 
 	return 0;
 }
+
+unsigned char smk_palette_updated(smk s)
+{
+	return s->frame_type[s->cur_frame] & 0x01;
+}
diff --git a/3rdParty/libsmacker/smacker.h b/3rdParty/libsmacker/smacker.h
index e79700416..860ed9acf 100644
--- a/3rdParty/libsmacker/smacker.h
+++ b/3rdParty/libsmacker/smacker.h
@@ -96,6 +96,9 @@ char smk_next(smk object);
 /** seek to first keyframe before/at N in an smk */
 char smk_seek_keyframe(smk object, unsigned long frame);
 
+/** was the pallet updated this frame */
+unsigned char smk_palette_updated(smk s);
+
 #ifdef __cplusplus
 }
 #endif