Add base class to all meshers, gather common things in it

SCsub

@@ -4,6 +4,7 @@ env.add_source_files(env.modules_sources, "*.cpp")
 env.add_source_files(env.modules_sources, "meshers/blocky/*.cpp")
 env.add_source_files(env.modules_sources, "meshers/transvoxel/*.cpp")
 env.add_source_files(env.modules_sources, "meshers/dmc/*.cpp")
+env.add_source_files(env.modules_sources, "meshers/*.cpp")
 env.add_source_files(env.modules_sources, "providers/*.cpp")
 env.add_source_files(env.modules_sources, "util/*.cpp")
 env.add_source_files(env.modules_sources, "terrain/*.cpp")

meshers/blocky/voxel_mesher_blocky.cpp

@@ -4,6 +4,8 @@
 #include "../../voxel_library.h"
 #include <core/os/os.h>
 
+namespace {
+
 template <typename T>
 void raw_copy_to(PoolVector<T> &to, const Vector<T> &from) {
 	to.resize(from.size());
@@ -11,26 +13,6 @@ void raw_copy_to(PoolVector<T> &to, const Vector<T> &from) {
 	memcpy(w.ptr(), from.ptr(), from.size() * sizeof(T));
 }
 
-VoxelMesherBlocky::VoxelMesherBlocky() :
-		_baked_occlusion_darkness(0.8),
-		_bake_occlusion(true) {}
-
-void VoxelMesherBlocky::set_library(Ref<VoxelLibrary> library) {
-	_library = library;
-}
-
-void VoxelMesherBlocky::set_occlusion_darkness(float darkness) {
-	_baked_occlusion_darkness = darkness;
-	if (_baked_occlusion_darkness < 0.0)
-		_baked_occlusion_darkness = 0.0;
-	else if (_baked_occlusion_darkness >= 1.0)
-		_baked_occlusion_darkness = 1.0;
-}
-
-void VoxelMesherBlocky::set_occlusion_enabled(bool enable) {
-	_bake_occlusion = enable;
-}
-
 inline Color Color_greyscale(float c) {
 	return Color(c, c, c);
 }
@@ -51,36 +33,35 @@ inline bool is_transparent(const VoxelLibrary &lib, int voxel_id) {
 	return true;
 }
 
-Ref<ArrayMesh> VoxelMesherBlocky::build_mesh(Ref<VoxelBuffer> buffer_ref, unsigned int channel, Array materials, Ref<ArrayMesh> mesh) {
+} // namespace
-	ERR_FAIL_COND_V(buffer_ref.is_null(), Ref<ArrayMesh>());
 
-	VoxelBuffer &buffer = **buffer_ref;
+VoxelMesherBlocky::VoxelMesherBlocky() :
-	Array surfaces = build(buffer, channel, MINIMUM_PADDING);
+		_baked_occlusion_darkness(0.8),
+		_bake_occlusion(true) {}
 
-	if (mesh.is_null())
+void VoxelMesherBlocky::set_library(Ref<VoxelLibrary> library) {
-		mesh.instance();
+	_library = library;
-
-	int surface = mesh->get_surface_count();
-	for (int i = 0; i < surfaces.size(); ++i) {
-
-		Array arrays = surfaces[i];
-		mesh->add_surface_from_arrays(Mesh::PRIMITIVE_TRIANGLES, arrays);
-
-		Ref<Material> material = materials[i];
-		if (material.is_valid()) {
-			mesh->surface_set_material(surface, material);
-		}
-	}
-
-	return mesh;
 }
 
-Array VoxelMesherBlocky::build(const VoxelBuffer &buffer, unsigned int channel, int padding) {
+void VoxelMesherBlocky::set_occlusion_darkness(float darkness) {
+	_baked_occlusion_darkness = darkness;
+	if (_baked_occlusion_darkness < 0.0)
+		_baked_occlusion_darkness = 0.0;
+	else if (_baked_occlusion_darkness >= 1.0)
+		_baked_occlusion_darkness = 1.0;
+}
+
+void VoxelMesherBlocky::set_occlusion_enabled(bool enable) {
+	_bake_occlusion = enable;
+}
+
+void VoxelMesherBlocky::build(VoxelMesher::Output &output, const VoxelBuffer &buffer, int padding) {
 	//uint64_t time_before = OS::get_singleton()->get_ticks_usec();
 
-	ERR_FAIL_COND_V(_library.is_null(), Array());
+	ERR_FAIL_COND(_library.is_null());
-	ERR_FAIL_COND_V(channel >= VoxelBuffer::MAX_CHANNELS, Array());
+	ERR_FAIL_COND(padding < MINIMUM_PADDING);
-	ERR_FAIL_COND_V(padding < MINIMUM_PADDING, Array());
+
+	const int channel = VoxelBuffer::CHANNEL_TYPE;
 
 	const VoxelLibrary &library = **_library;
 
@@ -118,7 +99,7 @@ Array VoxelMesherBlocky::build(const VoxelBuffer &buffer, unsigned int channel,
 	// That means we can use raw pointers to voxel data inside instead of using the higher-level getters,
 	// and then save a lot of time.
 
-	uint8_t *type_buffer = buffer.get_channel_raw(Voxel::CHANNEL_TYPE);
+	uint8_t *type_buffer = buffer.get_channel_raw(channel);
 	//       _
 	//      | \
 	//     /\ \\
@@ -132,7 +113,7 @@ Array VoxelMesherBlocky::build(const VoxelBuffer &buffer, unsigned int channel,
 		// No data to read, the channel is probably uniform
 		// TODO This is an invalid behavior IF sending a full block of uniformly opaque cubes,
 		// however not likely for terrains because with neighbor padding, such a case means no face would be generated anyways
-		return Array();
+		return;
 	}
 
 	//CRASH_COND(memarr_len(type_buffer) != buffer.get_volume() * sizeof(uint8_t));
@@ -367,8 +348,6 @@ Array VoxelMesherBlocky::build(const VoxelBuffer &buffer, unsigned int channel,
 	//	print_line(String("Made mesh v: ") + String::num(_arrays[0].positions.size())
 	//			+ String(", i: ") + String::num(_arrays[0].indices.size()));
 
-	Array surfaces;
-
 	// TODO We could return a single byte array and use Mesh::add_surface down the line?
 
 	for (int i = 0; i < MAX_MATERIALS; ++i) {
@@ -407,15 +386,19 @@ Array VoxelMesherBlocky::build(const VoxelBuffer &buffer, unsigned int channel,
 				mesh_arrays[Mesh::ARRAY_INDEX] = indices;
 			}
 
-			surfaces.append(mesh_arrays);
+			output.surfaces.push_back(mesh_arrays);
 		}
 	}
 
+	output.primitive_type = Mesh::PRIMITIVE_TRIANGLES;
+
 	//uint64_t time_commit = OS::get_singleton()->get_ticks_usec() - time_before;
 
 	//print_line(String("P: {0}, M: {1}, C: {2}").format(varray(time_prep, time_meshing, time_commit)));
+}
 
-	return surfaces;
+int VoxelMesherBlocky::get_minimum_padding() const {
+	return MINIMUM_PADDING;
 }
 
 void VoxelMesherBlocky::_bind_methods() {
@@ -429,8 +412,6 @@ void VoxelMesherBlocky::_bind_methods() {
 	ClassDB::bind_method(D_METHOD("set_occlusion_darkness", "value"), &VoxelMesherBlocky::set_occlusion_darkness);
 	ClassDB::bind_method(D_METHOD("get_occlusion_darkness"), &VoxelMesherBlocky::get_occlusion_darkness);
 
-	ClassDB::bind_method(D_METHOD("build_mesh", "voxel_buffer", "channel", "materials", "existing_mesh"), &VoxelMesherBlocky::build_mesh);
-
 #ifdef VOXEL_PROFILING
 	ClassDB::bind_method(D_METHOD("get_profiling_info"), &VoxelMesherBlocky::get_profiling_info);
 #endif

meshers/blocky/voxel_mesher_blocky.h

@@ -3,14 +3,13 @@
 
 #include "../../util/zprofiling.h"
 #include "../../voxel.h"
-#include "../../voxel_buffer.h"
 #include "../../voxel_library.h"
+#include "../voxel_mesher.h"
 #include <core/reference.h>
 #include <scene/resources/mesh.h>
 
-// TODO Should be renamed VoxelMesherBlocky or something like that
+class VoxelMesherBlocky : public VoxelMesher {
-class VoxelMesherBlocky : public Reference {
+	GDCLASS(VoxelMesherBlocky, VoxelMesher)
-	GDCLASS(VoxelMesherBlocky, Reference)
 
 public:
 	static const unsigned int MAX_MATERIALS = 8; // Arbitrary. Tweak if needed.
@@ -27,13 +26,14 @@ public:
 	void set_occlusion_enabled(bool enable);
 	bool get_occlusion_enabled() const { return _bake_occlusion; }
 
-	Array build(const VoxelBuffer &buffer_ref, unsigned int channel, int padding);
+	void build(VoxelMesher::Output &output, const VoxelBuffer &voxels, int padding) override;
-	Ref<ArrayMesh> build_mesh(Ref<VoxelBuffer> buffer_ref, unsigned int channel, Array materials, Ref<ArrayMesh> mesh = Ref<ArrayMesh>());
+	int get_minimum_padding() const override;
 
 protected:
 	static void _bind_methods();
 
 private:
+	// TODO Replace those with std::vector, it's faster
 	struct Arrays {
 		Vector<Vector3> positions;
 		Vector<Vector3> normals;

meshers/dmc/voxel_mesher_dmc.cpp

@@ -1317,7 +1317,7 @@ float VoxelMesherDMC::get_geometric_error() const {
 	return _geometric_error;
 }
 
-Array VoxelMesherDMC::build(const VoxelBuffer &voxels) {
+void VoxelMesherDMC::build(VoxelMesher::Output &output, const VoxelBuffer &voxels, int padding) {
 
 	// Requirements:
 	// - Voxel data must be padded
@@ -1328,17 +1328,18 @@ Array VoxelMesherDMC::build(const VoxelBuffer &voxels) {
 
 	if (voxels.is_uniform(VoxelBuffer::CHANNEL_ISOLEVEL)) {
 		// That won't produce any polygon
-		return Array();
+		return;
 	}
 
-	int padding = 2;
+	ERR_FAIL_COND(padding < MINIMUM_PADDING);
+
 	const Vector3i buffer_size = voxels.get_size();
 	// Taking previous power of two because the algorithm uses an integer cubic octree, and data should be padded
 	int chunk_size = previous_power_of_2(MIN(MIN(buffer_size.x, buffer_size.y), buffer_size.z));
 
-	ERR_FAIL_COND_V(voxels.get_size().x < chunk_size + padding * 2, Array());
+	ERR_FAIL_COND(voxels.get_size().x < chunk_size + padding * 2);
-	ERR_FAIL_COND_V(voxels.get_size().y < chunk_size + padding * 2, Array());
+	ERR_FAIL_COND(voxels.get_size().y < chunk_size + padding * 2);
-	ERR_FAIL_COND_V(voxels.get_size().z < chunk_size + padding * 2, Array());
+	ERR_FAIL_COND(voxels.get_size().z < chunk_size + padding * 2);
 
 	// Construct an intermediate to handle padding transparently
 	dmc::VoxelAccess voxels_access(voxels, Vector3i(padding));
@@ -1427,33 +1428,17 @@ Array VoxelMesherDMC::build(const VoxelBuffer &voxels) {
 	// TODO Marching squares skirts
 
 	// surfaces[material][array_type], for now single material
-	Array surfaces;
+	output.surfaces.push_back(surface);
-	surfaces.append(surface);
+
-	return surfaces;
+	if (_mesh_mode == MESH_NORMAL) {
+		output.primitive_type = Mesh::PRIMITIVE_TRIANGLES;
+	} else {
+		output.primitive_type = Mesh::PRIMITIVE_LINES;
+	}
 }
 
-Ref<ArrayMesh> VoxelMesherDMC::build_mesh(Ref<VoxelBuffer> voxels) {
+int VoxelMesherDMC::get_minimum_padding() const {
-
+	return MINIMUM_PADDING;
-	ERR_FAIL_COND_V(voxels.is_null(), Ref<ArrayMesh>());
-
-	Array surfaces = build(**voxels);
-
-	if (surfaces.empty()) {
-		return Ref<ArrayMesh>();
-	}
-
-	Ref<ArrayMesh> mesh;
-	mesh.instance();
-
-	for (int i = 0; i < surfaces.size(); ++i) {
-		if (_mesh_mode == MESH_NORMAL) {
-			mesh->add_surface_from_arrays(Mesh::PRIMITIVE_TRIANGLES, surfaces[i]);
-		} else {
-			mesh->add_surface_from_arrays(Mesh::PRIMITIVE_LINES, surfaces[i]);
-		}
-	}
-
-	return mesh;
 }
 
 Dictionary VoxelMesherDMC::get_stats() const {
@@ -1476,7 +1461,6 @@ void VoxelMesherDMC::_bind_methods() {
 	ClassDB::bind_method(D_METHOD("set_geometric_error", "error"), &VoxelMesherDMC::set_geometric_error);
 	ClassDB::bind_method(D_METHOD("get_geometric_error"), &VoxelMesherDMC::get_geometric_error);
 
-	ClassDB::bind_method(D_METHOD("build_mesh", "voxel_buffer"), &VoxelMesherDMC::build_mesh);
 	ClassDB::bind_method(D_METHOD("get_stats"), &VoxelMesherDMC::get_stats);
 
 	BIND_ENUM_CONSTANT(MESH_NORMAL);

meshers/dmc/voxel_mesher_dmc.h

@@ -1,7 +1,7 @@
 #ifndef VOXEL_MESHER_DMC_H
 #define VOXEL_MESHER_DMC_H
 
-#include "../../voxel_buffer.h"
+#include "../voxel_mesher.h"
 #include "hermite_value.h"
 #include "mesh_builder.h"
 #include "object_pool.h"
@@ -64,9 +64,11 @@ struct DualGrid {
 
 } // namespace dmc
 
-class VoxelMesherDMC : public Reference {
+class VoxelMesherDMC : public VoxelMesher {
-	GDCLASS(VoxelMesherDMC, Reference)
+	GDCLASS(VoxelMesherDMC, VoxelMesher)
 public:
+	static const int MINIMUM_PADDING = 2;
+
 	enum MeshMode {
 		MESH_NORMAL,
 		MESH_WIREFRAME,
@@ -91,8 +93,8 @@ public:
 	void set_geometric_error(real_t geometric_error);
 	float get_geometric_error() const;
 
-	Array build(const VoxelBuffer &voxels);
+	void build(VoxelMesher::Output &output, const VoxelBuffer &voxels, int padding) override;
-	Ref<ArrayMesh> build_mesh(Ref<VoxelBuffer> voxels);
+	int get_minimum_padding() const override;
 
 	Dictionary get_stats() const;
 

meshers/transvoxel/voxel_mesher_transvoxel.cpp

@@ -3,6 +3,8 @@
 #include "transvoxel_tables.cpp"
 #include <core/os/os.h>
 
+namespace {
+
 inline float tof(int8_t v) {
 	return static_cast<float>(v) / 256.f;
 }
@@ -58,6 +60,8 @@ void copy_to(PoolVector<T> &to, Vector<T> &from) {
 	}
 }
 
+} // namespace
+
 VoxelMesherTransvoxel::ReuseCell::ReuseCell() {
 	case_index = 0;
 	for (unsigned int i = 0; i < 4; ++i) {
@@ -65,32 +69,15 @@ VoxelMesherTransvoxel::ReuseCell::ReuseCell() {
 	}
 }
 
-VoxelMesherTransvoxel::VoxelMesherTransvoxel() {
+int VoxelMesherTransvoxel::get_minimum_padding() const {
+	return MINIMUM_PADDING;
 }
 
-Ref<ArrayMesh> VoxelMesherTransvoxel::build_mesh(Ref<VoxelBuffer> voxels_ref, unsigned int channel, Ref<ArrayMesh> mesh) {
+void VoxelMesherTransvoxel::build(VoxelMesher::Output &output, const VoxelBuffer &voxels, int padding) {
 
-	ERR_FAIL_COND_V(voxels_ref.is_null(), Ref<ArrayMesh>());
+	ERR_FAIL_COND(padding < MINIMUM_PADDING);
 
-	VoxelBuffer &buffer = **voxels_ref;
+	int channel = VoxelBuffer::CHANNEL_ISOLEVEL;
-	Array surfaces = build(buffer, channel);
-
-	if (mesh.is_null())
-		mesh.instance();
-
-	//int surface = mesh->get_surface_count();
-	for (int i = 0; i < surfaces.size(); ++i) {
-		Array arrays = surfaces[i];
-		mesh->add_surface_from_arrays(Mesh::PRIMITIVE_TRIANGLES, arrays);
-		//mesh->surface_set_material(surface, _materials[i]);
-	}
-
-	return mesh;
-}
-
-Array VoxelMesherTransvoxel::build(const VoxelBuffer &voxels, unsigned int channel) {
-
-	ERR_FAIL_COND_V(channel >= VoxelBuffer::MAX_CHANNELS, Array());
 
 	// Initialize dynamic memory:
 	// These vectors are re-used.
@@ -109,7 +96,7 @@ Array VoxelMesherTransvoxel::build(const VoxelBuffer &voxels, unsigned int chann
 
 	if (m_output_vertices.size() == 0) {
 		// The mesh can be empty
-		return Array();
+		return;
 	}
 
 	PoolVector<Vector3> vertices;
@@ -128,10 +115,8 @@ Array VoxelMesherTransvoxel::build(const VoxelBuffer &voxels, unsigned int chann
 	}
 	arrays[Mesh::ARRAY_INDEX] = indices;
 
-	Array surfaces;
+	output.surfaces.push_back(arrays);
-	surfaces.append(arrays);
+	output.primitive_type = Mesh::PRIMITIVE_TRIANGLES;
-
-	return surfaces;
 }
 
 void VoxelMesherTransvoxel::build_internal(const VoxelBuffer &voxels, unsigned int channel) {
@@ -393,6 +378,4 @@ void VoxelMesherTransvoxel::emit_vertex(Vector3 primary, Vector3 normal) {
 }
 
 void VoxelMesherTransvoxel::_bind_methods() {
-
-	ClassDB::bind_method(D_METHOD("build", "voxels", "channel", "existing_mesh"), &VoxelMesherTransvoxel::build_mesh, DEFVAL(Variant()));
 }

meshers/transvoxel/voxel_mesher_transvoxel.h

@@ -1,17 +1,17 @@
 #ifndef VOXEL_MESHER_SMOOTH_H
 #define VOXEL_MESHER_SMOOTH_H
 
-#include "../../voxel_buffer.h"
+#include "../voxel_mesher.h"
 #include <scene/resources/mesh.h>
 
-class VoxelMesherTransvoxel : public Reference {
+class VoxelMesherTransvoxel : public VoxelMesher {
-	GDCLASS(VoxelMesherTransvoxel, Reference)
+	GDCLASS(VoxelMesherTransvoxel, VoxelMesher)
 
 public:
-	VoxelMesherTransvoxel();
+	static const int MINIMUM_PADDING = 2;
 
-	Ref<ArrayMesh> build_mesh(Ref<VoxelBuffer> voxels_ref, unsigned int channel, Ref<ArrayMesh> mesh = Ref<ArrayMesh>());
+	void build(VoxelMesher::Output &output, const VoxelBuffer &voxels, int padding) override;
-	Array build(const VoxelBuffer &voxels, unsigned int channel);
+	int get_minimum_padding() const override;
 
 protected:
 	static void _bind_methods();

meshers/voxel_mesher.cpp

@@ -0,0 +1,36 @@
+#include "voxel_mesher.h"
+
+Ref<Mesh> VoxelMesher::build_mesh(Ref<VoxelBuffer> voxels) {
+
+	ERR_FAIL_COND_V(voxels.is_null(), Ref<ArrayMesh>());
+
+	Output output;
+	build(output, **voxels, get_minimum_padding());
+
+	if (output.surfaces.empty()) {
+		return Ref<ArrayMesh>();
+	}
+
+	Ref<ArrayMesh> mesh;
+	mesh.instance();
+
+	for (int i = 0; i < output.surfaces.size(); ++i) {
+		mesh->add_surface_from_arrays(output.primitive_type, output.surfaces[i]);
+	}
+
+	return mesh;
+}
+
+void VoxelMesher::build(Output &output, const VoxelBuffer &voxels, int padding) {
+}
+
+int VoxelMesher::get_minimum_padding() const {
+	return 0;
+}
+
+void VoxelMesher::_bind_methods() {
+
+	// Shortcut if you want to generate a mesh directly from a fixed grid of voxels.
+	// Useful for testing the different meshers.
+	ClassDB::bind_method(D_METHOD("build_mesh", "voxel_buffer"), &VoxelMesher::build_mesh);
+}

meshers/voxel_mesher.h

@@ -0,0 +1,24 @@
+#ifndef VOXEL_MESHER_H
+#define VOXEL_MESHER_H
+
+#include "../voxel_buffer.h"
+#include <scene/resources/mesh.h>
+
+class VoxelMesher : public Reference {
+	GDCLASS(VoxelMesher, Reference)
+public:
+	struct Output {
+		Vector<Array> surfaces;
+		Mesh::PrimitiveType primitive_type;
+	};
+
+	virtual void build(Output &output, const VoxelBuffer &voxels, int padding);
+	virtual int get_minimum_padding() const;
+
+	Ref<Mesh> build_mesh(Ref<VoxelBuffer> voxels);
+
+protected:
+	static void _bind_methods();
+};
+
+#endif // VOXEL_MESHER_H

register_types.cpp

@@ -34,6 +34,7 @@ void register_voxel_types() {
 	ClassDB::register_class<VoxelIsoSurfaceTool>();
 
 	// Meshers
+	ClassDB::register_class<VoxelMesher>();
 	ClassDB::register_class<VoxelMesherBlocky>();
 	ClassDB::register_class<VoxelMesherTransvoxel>();
 	ClassDB::register_class<VoxelMesherDMC>();

terrain/voxel_mesh_updater.cpp

@@ -107,6 +107,17 @@ void VoxelMeshUpdater::pop(Output &output) {
 	_shared_output.blocks.clear();
 }
 
+int VoxelMeshUpdater::get_required_padding() const {
+
+	int padding = _blocky_mesher->get_minimum_padding();
+
+	if (_dmc_mesher.is_valid()) {
+		padding = max(padding, _dmc_mesher->get_minimum_padding());
+	}
+
+	return padding;
+}
+
 void VoxelMeshUpdater::_thread_func(void *p_self) {
 	VoxelMeshUpdater *self = reinterpret_cast<VoxelMeshUpdater *>(p_self);
 	self->thread_func();
@@ -181,17 +192,12 @@ void VoxelMeshUpdater::process_block(const InputBlock &block, OutputBlock &outpu
 
 	CRASH_COND(block.voxels.is_null());
 
-	int padding = 1;
+	int padding = get_required_padding();
-	if (_dmc_mesher.is_valid()) {
-		padding = 2;
-	}
 
-	// Build cubic parts of the mesh
+	_blocky_mesher->build(output.blocky_surfaces, **block.voxels, padding);
-	output.model_surfaces = _blocky_mesher->build(**block.voxels, Voxel::CHANNEL_TYPE, padding);
 
 	if (_dmc_mesher.is_valid()) {
-		// Build smooth parts of the mesh
+		_dmc_mesher->build(output.smooth_surfaces, **block.voxels, padding);
-		output.smooth_surfaces = _dmc_mesher->build(**block.voxels);
 	}
 
 	output.position = block.position;

terrain/voxel_mesh_updater.h

@@ -26,8 +26,8 @@ public:
 	};
 
 	struct OutputBlock {
-		Array model_surfaces;
+		VoxelMesher::Output blocky_surfaces;
-		Array smooth_surfaces;
+		VoxelMesher::Output smooth_surfaces;
 		Vector3i position;
 	};
 
@@ -66,6 +66,8 @@ public:
 	void push(const Input &input);
 	void pop(Output &output);
 
+	int get_required_padding() const;
+
 private:
 	static void _thread_func(void *p_self);
 	void thread_func();

terrain/voxel_terrain.cpp

@@ -286,15 +286,6 @@ void VoxelTerrain::reset_updater() {
 	_block_updater = memnew(VoxelMeshUpdater(_library, params));
 }
 
-int VoxelTerrain::get_block_padding() const {
-	// How many neighbor voxels we should pad for mesh updates to be seamless
-	// TODO Generalize padding retrieval, or split terrain systems because blocky and smooth are two different beasts
-	// - Blocky needs padding of 1
-	// - Transvoxel needs padding of 2
-	// - DMC needs padding of 2
-	return _smooth_meshing_enabled ? 2 : 1;
-}
-
 inline int get_border_index(int x, int max) {
 	return x == 0 ? 0 : x != max ? 1 : 2;
 }
@@ -757,7 +748,7 @@ void VoxelTerrain::_process() {
 
 			// TODO Make the buffer re-usable
 			unsigned int block_size = _map->get_block_size();
-			unsigned int padding = get_block_padding();
+			unsigned int padding = _block_updater->get_required_padding();
 			nbuffer->create(block_size + 2 * padding, block_size + 2 * padding, block_size + 2 * padding);
 
 			unsigned int channels_mask = (1 << VoxelBuffer::CHANNEL_TYPE) | (1 << VoxelBuffer::CHANNEL_ISOLEVEL);
@@ -820,30 +811,30 @@ void VoxelTerrain::_process() {
 			mesh.instance();
 
 			int surface_index = 0;
-			for (int i = 0; i < ob.model_surfaces.size(); ++i) {
+			for (int i = 0; i < ob.blocky_surfaces.surfaces.size(); ++i) {
 
-				Array surface = ob.model_surfaces[i];
+				Array surface = ob.blocky_surfaces.surfaces[i];
 				if (surface.empty()) {
 					continue;
 				}
 
 				CRASH_COND(surface.size() != Mesh::ARRAY_MAX);
-				mesh->add_surface_from_arrays(Mesh::PRIMITIVE_TRIANGLES, surface);
+				mesh->add_surface_from_arrays(ob.blocky_surfaces.primitive_type, surface);
 				mesh->surface_set_material(surface_index, _materials[i]);
 
 				++surface_index;
 			}
 
-			for (int i = 0; i < ob.smooth_surfaces.size(); ++i) {
+			for (int i = 0; i < ob.smooth_surfaces.surfaces.size(); ++i) {
 
-				Array surface = ob.smooth_surfaces[i];
+				Array surface = ob.smooth_surfaces.surfaces[i];
 				if (surface.empty()) {
 					continue;
 				}
 
 				CRASH_COND(surface.size() != Mesh::ARRAY_MAX);
 				// TODO Problem here, the mesher could be configured to output wireframe! Need to output some MeshData struct instead
-				mesh->add_surface_from_arrays(Mesh::PRIMITIVE_TRIANGLES, surface);
+				mesh->add_surface_from_arrays(ob.smooth_surfaces.primitive_type, surface);
 				mesh->surface_set_material(surface_index, _materials[i]);
 				// No material supported yet
 				++surface_index;

terrain/voxel_terrain.h

@@ -98,7 +98,6 @@ private:
 
 	void make_all_view_dirty_deferred();
 	void reset_updater();
-	int get_block_padding() const;
 
 	Spatial *get_viewer(NodePath path) const;