diff --git a/SCsub b/SCsub
index 6e7ccd6..2aeb4fc 100644
--- a/SCsub
+++ b/SCsub
@@ -71,6 +71,7 @@ sources = [
 
 if has_texture_packer:
     sources.append("library/terraman_library_merger.cpp")
+    sources.append("library/terraman_library_merger_pcm.cpp")
     sources.append("library/terra_surface_merger.cpp")
 
 if ARGUMENTS.get('custom_modules_shared', 'no') == 'yes':
diff --git a/config.py b/config.py
index 493f761..41be662 100644
--- a/config.py
+++ b/config.py
@@ -24,6 +24,7 @@ def get_doc_classes():
         "TerramanLibraryMerger",
         "TerramanLibrarySimple",
         "TerramanLibrary",
+        "TerramanLibraryMergerPCM",
 
         "TerraCubePoints",
         "TerraMesherCubic",
diff --git a/library/terraman_library_merger.h b/library/terraman_library_merger.h
index 85b4785..a278a2f 100644
--- a/library/terraman_library_merger.h
+++ b/library/terraman_library_merger.h
@@ -104,7 +104,6 @@ protected:
 
 	static void _bind_methods();
 
-private:
 	Vector<Ref<TerraSurfaceMerger> > _voxel_surfaces;
 #ifdef PROPS_PRESENT
 	Vector<Ref<PropData> > _props;
diff --git a/library/terraman_library_merger_pcm.cpp b/library/terraman_library_merger_pcm.cpp
new file mode 100644
index 0000000..9c4d22b
--- /dev/null
+++ b/library/terraman_library_merger_pcm.cpp
@@ -0,0 +1,36 @@
+/*
+Copyright (c) 2019-2021 Péter Magyar
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.
+*/
+
+#include "terraman_library_merger_pcm.h"
+
+bool TerramanLibraryMergerPCM::_supports_caching() {
+	return true;
+}
+
+TerramanLibraryMergerPCM::TerramanLibraryMergerPCM() {
+}
+
+TerramanLibraryMergerPCM::~TerramanLibraryMergerPCM() {
+}
+
+void TerramanLibraryMergerPCM::_bind_methods() {
+}
diff --git a/library/terraman_library_merger_pcm.h b/library/terraman_library_merger_pcm.h
new file mode 100644
index 0000000..02f369a
--- /dev/null
+++ b/library/terraman_library_merger_pcm.h
@@ -0,0 +1,52 @@
+/*
+Copyright (c) 2019-2021 Péter Magyar
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.
+*/
+
+#ifndef TERRAMAN_LIBRARY_MERGER_PCM_H
+#define TERRAMAN_LIBRARY_MERGER_PCM_H
+
+#include "core/version.h"
+
+#if VERSION_MAJOR > 3
+#include "core/io/resource.h"
+#include "core/templates/map.h"
+#else
+#include "core/resource.h"
+#include "core/map.h"
+#endif
+
+#include "terraman_library_merger.h"
+
+//pcm = per chunk material
+class TerramanLibraryMergerPCM : public TerramanLibraryMerger {
+	GDCLASS(TerramanLibraryMergerPCM, TerramanLibraryMerger)
+
+public:
+	bool _supports_caching();
+
+	TerramanLibraryMergerPCM();
+	~TerramanLibraryMergerPCM();
+
+protected:
+	static void _bind_methods();
+};
+
+#endif
diff --git a/register_types.cpp b/register_types.cpp
index ff06e02..31bfcb2 100644
--- a/register_types.cpp
+++ b/register_types.cpp
@@ -32,6 +32,7 @@ SOFTWARE.
 #ifdef TEXTURE_PACKER_PRESENT
 #include "library/terra_surface_merger.h"
 #include "library/terraman_library_merger.h"
+#include "library/terraman_library_merger_pcm.h"
 #endif
 
 #include "data/terra_light.h"
@@ -80,6 +81,7 @@ void register_terraman_types() {
 #ifdef TEXTURE_PACKER_PRESENT
 	ClassDB::register_class<TerraSurfaceMerger>();
 	ClassDB::register_class<TerramanLibraryMerger>();
+	ClassDB::register_class<TerramanLibraryMergerPCM>();
 #endif
 
 	ClassDB::register_class<TerraLight>();