From 3a51d4c044ffa7c2c4deaeec72317a5beceafb9d Mon Sep 17 00:00:00 2001
From: Relintai <relintai@protonmail.com>
Date: Mon, 2 Aug 2021 23:17:30 +0200
Subject: [PATCH] If the chunk dosen't need a material then set has_cache_key
 to false.

---
 library/terraman_library_merger_pcm.cpp | 9 ++++++++-
 1 file changed, 8 insertions(+), 1 deletion(-)

diff --git a/library/terraman_library_merger_pcm.cpp b/library/terraman_library_merger_pcm.cpp
index 3b06bfc..d85cede 100644
--- a/library/terraman_library_merger_pcm.cpp
+++ b/library/terraman_library_merger_pcm.cpp
@@ -51,7 +51,7 @@ void TerramanLibraryMergerPCM::_material_cache_get_key(Ref<TerraChunk> chunk) {
 
 	if (!ch) {
 		chunk->material_cache_key_set(0);
-		chunk->material_cache_key_has_set(true);
+		chunk->material_cache_key_has_set(false);
 
 		return;
 	}
@@ -81,6 +81,13 @@ void TerramanLibraryMergerPCM::_material_cache_get_key(Ref<TerraChunk> chunk) {
 		}
 	}
 
+	if (surfaces.size() == 0) {
+		chunk->material_cache_key_set(0);
+		chunk->material_cache_key_has_set(false);
+
+		return;
+	}
+
 	surfaces.sort();
 
 	String hstr;