diff --git a/SDK/include/NDK/Components/GraphicsComponent.hpp b/SDK/include/NDK/Components/GraphicsComponent.hpp
index c94cec4ab..aed427105 100644
--- a/SDK/include/NDK/Components/GraphicsComponent.hpp
+++ b/SDK/include/NDK/Components/GraphicsComponent.hpp
@@ -31,6 +31,10 @@ namespace Ndk
 
 			inline void Attach(Nz::InstancedRenderableRef renderable, int renderOrder = 0);
 
+			inline void Clear();
+
+			inline void Detach(const Nz::InstancedRenderableRef& renderable);
+
 			inline void EnsureBoundingVolumeUpdate() const;
 			inline void EnsureTransformMatrixUpdate() const;
 
@@ -63,6 +67,22 @@ namespace Ndk
 				{
 				}
 
+				Renderable(Renderable&& renderable) noexcept :
+				data(std::move(renderable.data)),
+				renderable(std::move(renderable.renderable)),
+				dataUpdated(renderable.dataUpdated)
+				{
+				}
+
+				Renderable& operator=(Renderable&& r) noexcept
+				{
+					data = std::move(r.data);
+					dataUpdated = r.dataUpdated;
+					renderable = std::move(r.renderable);
+
+					return *this;
+				}
+
 				NazaraSlot(Nz::InstancedRenderable, OnInstancedRenderableInvalidateData, renderableInvalidationSlot);
 
 				mutable Nz::InstancedRenderable::InstanceData data;
diff --git a/SDK/include/NDK/Components/GraphicsComponent.inl b/SDK/include/NDK/Components/GraphicsComponent.inl
index c330da5eb..9ca100d0e 100644
--- a/SDK/include/NDK/Components/GraphicsComponent.inl
+++ b/SDK/include/NDK/Components/GraphicsComponent.inl
@@ -3,6 +3,7 @@
 // For conditions of distribution and use, see copyright notice in Prerequesites.hpp
 
 #include <algorithm>
+#include "GraphicsComponent.hpp"
 
 namespace Ndk
 {
@@ -46,6 +47,26 @@ namespace Ndk
 		InvalidateBoundingVolume();
 	}
 
+	inline void GraphicsComponent::Clear()
+	{
+		m_renderables.clear();
+
+		InvalidateBoundingVolume();
+	}
+
+	inline void GraphicsComponent::Detach(const Nz::InstancedRenderableRef& renderable)
+	{
+		for (auto it = m_renderables.begin(); it != m_renderables.end(); ++it)
+		{
+			if (it->renderable == renderable)
+			{
+				InvalidateBoundingVolume();
+				m_renderables.erase(it);
+				break;
+			}
+		}
+	}
+
 	inline void GraphicsComponent::EnsureBoundingVolumeUpdate() const
 	{
 		if (!m_boundingVolumeUpdated)
diff --git a/include/Nazara/Core/ObjectRef.hpp b/include/Nazara/Core/ObjectRef.hpp
index 6f3ccab9a..d1cd13ec0 100644
--- a/include/Nazara/Core/ObjectRef.hpp
+++ b/include/Nazara/Core/ObjectRef.hpp
@@ -44,8 +44,33 @@ namespace Nz
 			T* m_object;
 	};
 
-    template<typename T> struct PointedType<ObjectRef<T>> {typedef T type;};
-    template<typename T> struct PointedType<ObjectRef<T> const> {typedef T type;};
+	template<typename T> bool operator==(const ObjectRef<T>& lhs, const ObjectRef<T>& rhs);
+	template<typename T> bool operator==(const T& lhs, const ObjectRef<T>& rhs);
+	template<typename T> bool operator==(const ObjectRef<T>& lhs, const T& rhs);
+
+	template<typename T> bool operator!=(const ObjectRef<T>& lhs, const ObjectRef<T>& rhs);
+	template<typename T> bool operator!=(const T& lhs, const ObjectRef<T>& rhs);
+	template<typename T> bool operator!=(const ObjectRef<T>& lhs, const T& rhs);
+
+	template<typename T> bool operator<(const ObjectRef<T>& lhs, const ObjectRef<T>& rhs);
+	template<typename T> bool operator<(const T& lhs, const ObjectRef<T>& rhs);
+	template<typename T> bool operator<(const ObjectRef<T>& lhs, const T& rhs);
+
+	template<typename T> bool operator<=(const ObjectRef<T>, const ObjectRef<T>& rhs);
+	template<typename T> bool operator<=(const T& lhs, const ObjectRef<T>& rhs);
+	template<typename T> bool operator<=(const ObjectRef<T>& lhs, const T& rhs);
+
+	template<typename T> bool operator>(const ObjectRef<T>& lhs, const ObjectRef<T>& rhs);
+	template<typename T> bool operator>(const T& lhs, const ObjectRef<T>& rhs);
+	template<typename T> bool operator>(const ObjectRef<T>& lhs, const T& rhs);
+
+	template<typename T> bool operator>=(const ObjectRef<T>& lhs, const ObjectRef<T>& rhs);
+	template<typename T> bool operator>=(const T& lhs, const ObjectRef<T>& rhs);
+	template<typename T> bool operator>=(const ObjectRef<T>& lhs, const T& rhs);
+
+
+	template<typename T> struct PointedType<ObjectRef<T>> { typedef T type; };
+	template<typename T> struct PointedType<ObjectRef<T> const> { typedef T type; };
 }
 
 #include <Nazara/Core/ObjectRef.inl>
diff --git a/include/Nazara/Core/ObjectRef.inl b/include/Nazara/Core/ObjectRef.inl
index ad74b4f2e..8dab06948 100644
--- a/include/Nazara/Core/ObjectRef.inl
+++ b/include/Nazara/Core/ObjectRef.inl
@@ -245,6 +245,241 @@ namespace Nz
 
 		return *this;
 	}
+
+
+	/*!
+	* \brief Checks whether the first object handle is equal to the second object handle
+	* \return true if it is the case
+	*
+	* \param first ObjectRef to compare in left hand side
+	* \param second ObjectRef to compare in right hand side
+	*/
+	template<typename T>
+	bool operator==(const ObjectRef<T>& lhs, const ObjectRef<T>& rhs)
+	{
+		return lhs.Get() == rhs.Get();
+	}
+
+	/*!
+	* \brief Checks whether the object is equal to the second object handle
+	* \return true if it is the case
+	*
+	* \param first Object to compare in left hand side
+	* \param second ObjectRef to compare in right hand side
+	*/
+	template<typename T>
+	bool operator==(const T& lhs, const ObjectRef<T>& rhs)
+	{
+		return &lhs == rhs.Get();
+	}
+
+	/*!
+	* \brief Checks whether the object handle is equal to the second object
+	* \return true if it is the case
+	*
+	* \param first ObjectRef to compare in left hand side
+	* \param second Object to compare in right hand side
+	*/
+	template<typename T>
+	bool operator==(const ObjectRef<T>& lhs, const T& rhs)
+	{
+		return lhs.Get() == &rhs;
+	}
+
+	/*!
+	* \brief Checks whether the first object handle is equal to the second object handle
+	* \return false if it is the case
+	*
+	* \param first ObjectRef to compare in left hand side
+	* \param second ObjectRef to compare in right hand side
+	*/
+	template<typename T>
+	bool operator!=(const ObjectRef<T>& lhs, const ObjectRef<T>& rhs)
+	{
+		return !(lhs == rhs);
+	}
+
+	/*!
+	* \brief Checks whether the object is equal to the second object handle
+	* \return false if it is the case
+	*
+	* \param first Object to compare in left hand side
+	* \param second ObjectRef to compare in right hand side
+	*/
+	template<typename T>
+	bool operator!=(const T& lhs, const ObjectRef<T>& rhs)
+	{
+		return !(lhs == rhs);
+	}
+
+	/*!
+	* \brief Checks whether the object handle is equal to the second object
+	* \return false if it is the case
+	*
+	* \param first ObjectRef to compare in left hand side
+	* \param second Object to compare in right hand side
+	*/
+	template<typename T>
+	bool operator!=(const ObjectRef<T>& lhs, const T& rhs)
+	{
+		return !(lhs == rhs);
+	}
+
+	/*!
+	* \brief Checks whether the first object handle is less than the second object handle
+	* \return true if it is the case
+	*
+	* \param first ObjectRef to compare in left hand side
+	* \param second ObjectRef to compare in right hand side
+	*/
+	template<typename T>
+	bool operator<(const ObjectRef<T>& lhs, const ObjectRef<T>& rhs)
+	{
+		return lhs.m_object < rhs.m_object;
+	}
+
+	/*!
+	* \brief Checks whether the first object handle is less than the second object handle
+	* \return true if it is the case
+	*
+	* \param first ObjectRef to compare in left hand side
+	* \param second ObjectRef to compare in right hand side
+	*/
+	template<typename T>
+	bool operator<(const T& lhs, const ObjectRef<T>& rhs)
+	{
+		return &lhs < rhs.m_object;
+	}
+
+	/*!
+	* \brief Checks whether the first object handle is less than the second object handle
+	* \return true if it is the case
+	*
+	* \param first ObjectRef to compare in left hand side
+	* \param second ObjectRef to compare in right hand side
+	*/
+	template<typename T>
+	bool operator<(const ObjectRef<T>& lhs, const T& rhs)
+	{
+		return lhs.m_object < &rhs;
+	}
+
+	/*!
+	* \brief Checks whether the first object handle is less or equal than the second object handle
+	* \return true if it is the case
+	*
+	* \param first ObjectRef to compare in left hand side
+	* \param second ObjectRef to compare in right hand side
+	*/
+	template<typename T>
+	bool operator<=(const ObjectRef<T>& lhs, const ObjectRef<T>& rhs)
+	{
+		return !(lhs > rhs);
+	}
+
+	/*!
+	* \brief Checks whether the first object handle is less or equal than the second object handle
+	* \return true if it is the case
+	*
+	* \param first ObjectRef to compare in left hand side
+	* \param second ObjectRef to compare in right hand side
+	*/
+	template<typename T>
+	bool operator<=(const T& lhs, const ObjectRef<T>& rhs)
+	{
+		return !(lhs > rhs);
+	}
+
+	/*!
+	* \brief Checks whether the first object handle is less or equal than the second object handle
+	* \return true if it is the case
+	*
+	* \param first ObjectRef to compare in left hand side
+	* \param second ObjectRef to compare in right hand side
+	*/
+	template<typename T>
+	bool operator<=(const ObjectRef<T>& lhs, const T& rhs)
+	{
+		return !(lhs > rhs);
+	}
+
+	/*!
+	* \brief Checks whether the first object handle is greather than the second object handle
+	* \return true if it is the case
+	*
+	* \param first ObjectRef to compare in left hand side
+	* \param second ObjectRef to compare in right hand side
+	*/
+	template<typename T>
+	bool operator>(const ObjectRef<T>& lhs, const ObjectRef<T>& rhs)
+	{
+		return rhs < lhs;
+	}
+
+	/*!
+	* \brief Checks whether the first object handle is greather than the second object handle
+	* \return true if it is the case
+	*
+	* \param first ObjectRef to compare in left hand side
+	* \param second ObjectRef to compare in right hand side
+	*/
+	template<typename T>
+	bool operator>(const T& lhs, const ObjectRef<T>& rhs)
+	{
+		return rhs < lhs;
+	}
+
+	/*!
+	* \brief Checks whether the first object handle is greather than the second object handle
+	* \return true if it is the case
+	*
+	* \param first ObjectRef to compare in left hand side
+	* \param second ObjectRef to compare in right hand side
+	*/
+	template<typename T>
+	bool operator>(const ObjectRef<T>& lhs, const T& rhs)
+	{
+		return rhs < lhs;
+	}
+
+	/*!
+	* \brief Checks whether the first object handle is greather or equal than the second object handle
+	* \return true if it is the case
+	*
+	* \param first ObjectRef to compare in left hand side
+	* \param second ObjectRef to compare in right hand side
+	*/
+	template<typename T>
+	bool operator>=(const ObjectRef<T>& lhs, const ObjectRef<T>& rhs)
+	{
+		return !(lhs < rhs);
+	}
+
+	/*!
+	* \brief Checks whether the first object handle is greather or equal than the second object handle
+	* \return true if it is the case
+	*
+	* \param first ObjectRef to compare in left hand side
+	* \param second ObjectRef to compare in right hand side
+	*/
+	template<typename T>
+	bool operator>=(const T& lhs, const ObjectRef<T>& rhs)
+	{
+		return !(lhs < rhs);
+	}
+
+	/*!
+	* \brief Checks whether the first object handle is greather or equal than the second object handle
+	* \return true if it is the case
+	*
+	* \param first ObjectRef to compare in left hand side
+	* \param second ObjectRef to compare in right hand side
+	*/
+	template<typename T>
+	bool operator>=(const ObjectRef<T>& lhs, const T& rhs)
+	{
+		return !(lhs < rhs);
+	}
 }
 
 namespace std
diff --git a/include/Nazara/Core/StringStream.hpp b/include/Nazara/Core/StringStream.hpp
index da68e8b27..f727ed35c 100644
--- a/include/Nazara/Core/StringStream.hpp
+++ b/include/Nazara/Core/StringStream.hpp
@@ -22,6 +22,10 @@ namespace Nz
 			StringStream(const StringStream&) = default;
 			StringStream(StringStream&&) noexcept = default;
 
+			void Clear();
+
+			std::size_t GetBufferSize() const;
+
 			String ToString() const;
 
 			StringStream& operator=(const StringStream&) = default;
diff --git a/include/Nazara/Graphics/InstancedRenderable.hpp b/include/Nazara/Graphics/InstancedRenderable.hpp
index 561cc4c97..d1c07bf9b 100644
--- a/include/Nazara/Graphics/InstancedRenderable.hpp
+++ b/include/Nazara/Graphics/InstancedRenderable.hpp
@@ -55,14 +55,27 @@ namespace Nz
 			struct InstanceData
 			{
 				InstanceData(Matrix4f& referenceMatrix) :
-				transformMatrix(referenceMatrix),
+				transformMatrix(&referenceMatrix),
 				flags(0)
 				{
 				}
 
+				InstanceData(InstanceData&& instanceData) noexcept = default;
+
+				InstanceData& operator=(InstanceData&& instanceData) noexcept
+				{
+					data = std::move(instanceData.data);
+					flags = instanceData.flags;
+					renderOrder = instanceData.renderOrder;
+					transformMatrix = instanceData.transformMatrix;
+					volume = instanceData.volume;
+
+					return *this;
+				}
+
 				std::vector<UInt8> data;
 				BoundingVolumef volume;
-				Matrix4f& transformMatrix;
+				Matrix4f* transformMatrix;
 				UInt32 flags;
 				int renderOrder;
 			};
diff --git a/include/Nazara/Graphics/Material.hpp b/include/Nazara/Graphics/Material.hpp
index 85c4d315c..b30c215c1 100644
--- a/include/Nazara/Graphics/Material.hpp
+++ b/include/Nazara/Graphics/Material.hpp
@@ -120,6 +120,8 @@ namespace Nz
 
 			void Reset();
 
+			void SaveToParameters(ParameterList* matData);
+
 			inline bool SetAlphaMap(const String& textureName);
 			inline void SetAlphaMap(TextureRef alphaMap);
 			inline void SetAlphaThreshold(float alphaThreshold);
diff --git a/include/Nazara/Math/Vector4.hpp b/include/Nazara/Math/Vector4.hpp
index d1e51433a..b84a4cb17 100644
--- a/include/Nazara/Math/Vector4.hpp
+++ b/include/Nazara/Math/Vector4.hpp
@@ -28,7 +28,7 @@ namespace Nz
 			explicit Vector4(T scale);
 			Vector4(const T vec[4]);
 			Vector4(const Vector2<T>& vec, T Z = 0.0, T W = 1.0);
-			Vector4(const Vector3<T>& vec, T W = 0.0);
+			Vector4(const Vector3<T>& vec, T W = 1.0);
 			template<typename U> explicit Vector4(const Vector4<U>& vec);
 			Vector4(const Vector4& vec) = default;
 			~Vector4() = default;
diff --git a/include/Nazara/Renderer/RenderWindow.hpp b/include/Nazara/Renderer/RenderWindow.hpp
index d9889d803..1cda9d63d 100644
--- a/include/Nazara/Renderer/RenderWindow.hpp
+++ b/include/Nazara/Renderer/RenderWindow.hpp
@@ -65,12 +65,11 @@ namespace Nz
 		protected:
 			bool Activate() const override;
 			void EnsureTargetUpdated() const override;
-
-		private:
 			bool OnWindowCreated() override;
 			void OnWindowDestroy() override;
 			void OnWindowResized() override;
 
+		private:
 			mutable std::vector<UInt8> m_buffer;
 			Clock m_clock;
 			ContextParameters m_parameters;
diff --git a/include/Nazara/Utility/Formats/OBJParser.hpp b/include/Nazara/Utility/Formats/OBJParser.hpp
index 90e653f93..79aa1824a 100644
--- a/include/Nazara/Utility/Formats/OBJParser.hpp
+++ b/include/Nazara/Utility/Formats/OBJParser.hpp
@@ -29,51 +29,61 @@ namespace Nz
 
 			struct Face
 			{
-				std::vector<FaceVertex> vertices;
+				std::size_t firstVertex;
+				std::size_t vertexCount;
 			};
 
 			struct Mesh
 			{
 				std::vector<Face> faces;
+				std::vector<FaceVertex> vertices;
 				String name;
-				unsigned int material;
+				std::size_t material;
 			};
 
-			OBJParser(Stream& stream$);
-			~OBJParser();
+			OBJParser() = default;
+			~OBJParser() = default;
 
-			const String* GetMaterials() const;
-			unsigned int GetMaterialCount() const;
-			const Mesh* GetMeshes() const;
-			unsigned int GetMeshCount() const;
-			const String& GetMtlLib() const;
-			const Vector3f* GetNormals() const;
-			unsigned int GetNormalCount() const;
-			const Vector4f* GetPositions() const;
-			unsigned int GetPositionCount() const;
-			const Vector3f* GetTexCoords() const;
-			unsigned int GetTexCoordCount() const;
+			inline const String* GetMaterials() const;
+			inline unsigned int GetMaterialCount() const;
+			inline const Mesh* GetMeshes() const;
+			inline unsigned int GetMeshCount() const;
+			inline const String& GetMtlLib() const;
+			inline const Vector3f* GetNormals() const;
+			inline unsigned int GetNormalCount() const;
+			inline const Vector4f* GetPositions() const;
+			inline unsigned int GetPositionCount() const;
+			inline const Vector3f* GetTexCoords() const;
+			inline unsigned int GetTexCoordCount() const;
 
-			bool Parse(std::size_t reservedVertexCount = 100);
+			bool Parse(Stream& stream, std::size_t reservedVertexCount = 100);
+
+			bool Save(Stream& stream) const;
 
 		private:
 			bool Advance(bool required = true);
-			void Error(const String& message);
-			void Warning(const String& message);
-			void UnrecognizedLine(bool error = false);
+			template<typename T> void Emit(const T& text) const;
+			inline void EmitLine() const;
+			template<typename T> void EmitLine(const T& line) const;
+			inline void Error(const String& message);
+			inline void Flush() const;
+			inline void Warning(const String& message);
+			inline void UnrecognizedLine(bool error = false);
 
 			std::vector<Mesh> m_meshes;
 			std::vector<String> m_materials;
 			std::vector<Vector3f> m_normals;
 			std::vector<Vector4f> m_positions;
 			std::vector<Vector3f> m_texCoords;
-			Stream& m_stream;
+			mutable Stream* m_currentStream;
 			String m_currentLine;
 			String m_mtlLib;
+			mutable StringStream m_outputStream;
 			bool m_keepLastLine;
 			unsigned int m_lineCount;
-			unsigned int m_streamFlags;
 	};
 }
 
+#include <Nazara/Utility/Formats/OBJParser.inl>
+
 #endif // NAZARA_FORMATS_OBJPARSER_HPP
diff --git a/include/Nazara/Utility/Formats/OBJParser.inl b/include/Nazara/Utility/Formats/OBJParser.inl
new file mode 100644
index 000000000..7cd0060b4
--- /dev/null
+++ b/include/Nazara/Utility/Formats/OBJParser.inl
@@ -0,0 +1,113 @@
+// Copyright (C) 2016 Jérôme Leclercq
+// This file is part of the "Nazara Engine - Utility module"
+// For conditions of distribution and use, see copyright notice in Config.hpp
+
+#include <Nazara/Utility/Formats/OBJParser.hpp>
+#include <Nazara/Core/Error.hpp>
+#include <Nazara/Utility/Debug.hpp>
+
+namespace Nz
+{
+	inline const String* OBJParser::GetMaterials() const
+	{
+		return m_materials.data();
+	}
+
+	inline unsigned int OBJParser::GetMaterialCount() const
+	{
+		return m_materials.size();
+	}
+
+	inline const OBJParser::Mesh* OBJParser::GetMeshes() const
+	{
+		return m_meshes.data();
+	}
+
+	inline unsigned int OBJParser::GetMeshCount() const
+	{
+		return m_meshes.size();
+	}
+
+	inline const String& OBJParser::GetMtlLib() const
+	{
+		return m_mtlLib;
+	}
+
+	inline const Vector3f* OBJParser::GetNormals() const
+	{
+		return m_normals.data();
+	}
+
+	inline unsigned int OBJParser::GetNormalCount() const
+	{
+		return m_normals.size();
+	}
+
+	inline const Vector4f* OBJParser::GetPositions() const
+	{
+		return m_positions.data();
+	}
+
+	inline unsigned int OBJParser::GetPositionCount() const
+	{
+		return m_positions.size();
+	}
+
+	inline const Vector3f* OBJParser::GetTexCoords() const
+	{
+		return m_texCoords.data();
+	}
+
+	inline unsigned int OBJParser::GetTexCoordCount() const
+	{
+		return m_texCoords.size();
+	}
+
+	template<typename T>
+	void OBJParser::Emit(const T& text) const
+	{
+		m_outputStream << text;
+		if (m_outputStream.GetBufferSize() > 1024 * 1024)
+			Flush();
+	}
+
+	inline void OBJParser::EmitLine() const
+	{
+		Emit('\n');
+	}
+
+	template<typename T>
+	void OBJParser::EmitLine(const T& line) const
+	{
+		Emit(line);
+		Emit('\n');
+	}
+
+	inline void OBJParser::Error(const String& message)
+	{
+		NazaraError(message + " at line #" + String::Number(m_lineCount));
+	}
+
+	inline void OBJParser::Flush() const
+	{
+		m_currentStream->Write(m_outputStream);
+		m_outputStream.Clear();
+	}
+
+	inline void OBJParser::Warning(const String& message)
+	{
+		NazaraWarning(message + " at line #" + String::Number(m_lineCount));
+	}
+
+	inline void OBJParser::UnrecognizedLine(bool error)
+	{
+		String message = "Unrecognized \"" + m_currentLine + '"';
+
+		if (error)
+			Error(message);
+		else
+			Warning(message);
+	}
+}
+
+#include <Nazara/Utility/DebugOff.hpp>
diff --git a/include/Nazara/Utility/MaterialData.hpp b/include/Nazara/Utility/MaterialData.hpp
index ea8ffd0f5..66df97689 100644
--- a/include/Nazara/Utility/MaterialData.hpp
+++ b/include/Nazara/Utility/MaterialData.hpp
@@ -22,6 +22,7 @@ namespace Nz
 		static constexpr const char* BackFaceStencilReference = "MatBackFaceStencilReference";
 		static constexpr const char* BackFaceStencilZFail     = "MatBackFaceStencilZFail";
 		static constexpr const char* Blending                 = "MatBlending";
+		static constexpr const char* CullingSide              = "MatCullingSide";
 		static constexpr const char* CustomDefined            = "MatCustomDefined";
 		static constexpr const char* ColorWrite               = "MatColorWrite";
 		static constexpr const char* DepthBuffer              = "MatDepthBuffer";
diff --git a/src/Nazara/Core/PluginManager.cpp b/src/Nazara/Core/PluginManager.cpp
index 24fbafcfb..b71af6677 100644
--- a/src/Nazara/Core/PluginManager.cpp
+++ b/src/Nazara/Core/PluginManager.cpp
@@ -19,8 +19,7 @@ namespace Nz
 
 		String s_pluginFiles[] =
 		{
-			"NazaraAssimp",  // Plugin_Assimp
-			"NazaraFreetype" // Plugin_FreeType
+			"PluginAssimp",  // Plugin_Assimp
 		};
 	}
 
@@ -80,7 +79,13 @@ namespace Nz
 
 	bool PluginManager::Mount(Plugin plugin)
 	{
-		return Mount(s_pluginFiles[plugin]);
+		Nz::String pluginName = s_pluginFiles[plugin];
+		#ifdef NAZARA_DEBUG
+		if (Mount(pluginName + "-d", true))
+			return true;
+		#endif
+
+		return Mount(pluginName, true);
 	}
 
 	/*!
diff --git a/src/Nazara/Core/String.cpp b/src/Nazara/Core/String.cpp
index a57d89861..21831bcdf 100644
--- a/src/Nazara/Core/String.cpp
+++ b/src/Nazara/Core/String.cpp
@@ -211,7 +211,7 @@ namespace Nz
 	*/
 
 	String::String(const std::string& string) :
-	String(string.c_str(), string.size())
+	String(string.data(), string.size())
 	{
 	}
 
diff --git a/src/Nazara/Core/StringStream.cpp b/src/Nazara/Core/StringStream.cpp
index ebd509c65..14d35799d 100644
--- a/src/Nazara/Core/StringStream.cpp
+++ b/src/Nazara/Core/StringStream.cpp
@@ -1,3 +1,4 @@
+#include "..\..\..\include\Nazara\Core\StringStream.hpp"
 // Copyright (C) 2015 Jérôme Leclercq
 // This file is part of the "Nazara Engine - Core module"
 // For conditions of distribution and use, see copyright notice in Config.hpp
@@ -16,7 +17,6 @@ namespace Nz
 	/*!
 	* \brief Constructs a StringStream object by default
 	*/
-
 	StringStream::StringStream() :
 	m_bufferSize(0)
 	{
@@ -27,18 +27,34 @@ namespace Nz
 	*
 	* \param str First value of the stream
 	*/
-
 	StringStream::StringStream(const String& str) :
 	m_bufferSize(str.GetSize())
 	{
 		m_strings.push_back(str);
 	}
 
+	/*!
+	* \brief Resets the state of the stream, erasing every contained text
+	*/
+	void StringStream::Clear()
+	{
+		m_bufferSize = 0;
+		m_strings.clear();
+	}
+
+	/*!
+	* \brief Get the current buffer size
+	* \return The internal accumulation buffer size, this is equivalent to the size of the final string
+	*/
+	std::size_t StringStream::GetBufferSize() const
+	{
+		return m_bufferSize;
+	}
+
 	/*!
 	* \brief Gives a string representation
 	* \return A string representation of the object where every objects of the stream has been converted with Nz::String
 	*/
-
 	String StringStream::ToString() const
 	{
 		String string;
@@ -56,7 +72,6 @@ namespace Nz
 	*
 	* \param boolean Boolean value
 	*/
-
 	StringStream& StringStream::operator<<(bool boolean)
 	{
 		m_strings.push_back(String::Boolean(boolean));
@@ -71,7 +86,6 @@ namespace Nz
 	*
 	* \param number Short value
 	*/
-
 	StringStream& StringStream::operator<<(short number)
 	{
 		m_strings.push_back(String::Number(number));
@@ -86,7 +100,6 @@ namespace Nz
 	*
 	* \param number Short value
 	*/
-
 	StringStream& StringStream::operator<<(unsigned short number)
 	{
 		m_strings.push_back(String::Number(number));
@@ -101,7 +114,6 @@ namespace Nz
 	*
 	* \param number Int value
 	*/
-
 	StringStream& StringStream::operator<<(int number)
 	{
 		m_strings.push_back(String::Number(number));
@@ -116,7 +128,6 @@ namespace Nz
 	*
 	* \param number Int value
 	*/
-
 	StringStream& StringStream::operator<<(unsigned int number)
 	{
 		m_strings.push_back(String::Number(number));
@@ -131,7 +142,6 @@ namespace Nz
 	*
 	* \param number Long value
 	*/
-
 	StringStream& StringStream::operator<<(long number)
 	{
 		m_strings.push_back(String::Number(number));
@@ -146,7 +156,6 @@ namespace Nz
 	*
 	* \param number Long value
 	*/
-
 	StringStream& StringStream::operator<<(unsigned long number)
 	{
 		m_strings.push_back(String::Number(number));
@@ -161,7 +170,6 @@ namespace Nz
 	*
 	* \param number Long long value
 	*/
-
 	StringStream& StringStream::operator<<(long long number)
 	{
 		m_strings.push_back(String::Number(number));
@@ -176,7 +184,6 @@ namespace Nz
 	*
 	* \param number Long long value
 	*/
-
 	StringStream& StringStream::operator<<(unsigned long long number)
 	{
 		m_strings.push_back(String::Number(number));
@@ -191,7 +198,6 @@ namespace Nz
 	*
 	* \param number Float value
 	*/
-
 	StringStream& StringStream::operator<<(float number)
 	{
 		m_strings.push_back(String::Number(number));
@@ -206,7 +212,6 @@ namespace Nz
 	*
 	* \param number Double value
 	*/
-
 	StringStream& StringStream::operator<<(double number)
 	{
 		m_strings.push_back(String::Number(number));
@@ -221,7 +226,6 @@ namespace Nz
 	*
 	* \param number Long double value
 	*/
-
 	StringStream& StringStream::operator<<(long double number)
 	{
 		m_strings.push_back(String::Number(number));
@@ -236,7 +240,6 @@ namespace Nz
 	*
 	* \param character Char value
 	*/
-
 	StringStream& StringStream::operator<<(char character)
 	{
 		m_strings.push_back(String(character));
@@ -251,7 +254,6 @@ namespace Nz
 	*
 	* \param character Char value
 	*/
-
 	StringStream& StringStream::operator<<(unsigned char character)
 	{
 		m_strings.push_back(String(static_cast<char>(character)));
@@ -266,7 +268,6 @@ namespace Nz
 	*
 	* \param string String value
 	*/
-
 	StringStream& StringStream::operator<<(const char* string)
 	{
 		m_strings.push_back(string);
@@ -281,7 +282,6 @@ namespace Nz
 	*
 	* \param string String value
 	*/
-
 	StringStream& StringStream::operator<<(const std::string& string)
 	{
 		m_strings.push_back(string);
@@ -296,7 +296,6 @@ namespace Nz
 	*
 	* \param string String value
 	*/
-
 	StringStream& StringStream::operator<<(const String& string)
 	{
 		m_strings.push_back(string);
@@ -311,7 +310,6 @@ namespace Nz
 	*
 	* \param ptr Pointer value
 	*/
-
 	StringStream& StringStream::operator<<(const void* ptr)
 	{
 		m_strings.push_back(String::Pointer(ptr));
@@ -324,7 +322,6 @@ namespace Nz
 	* \brief Converts this to Nz::String
 	* \return The string representation of the stream
 	*/
-
 	StringStream::operator String() const
 	{
 		return ToString();
diff --git a/src/Nazara/Graphics/Billboard.cpp b/src/Nazara/Graphics/Billboard.cpp
index 6f47e9847..e06d3c921 100644
--- a/src/Nazara/Graphics/Billboard.cpp
+++ b/src/Nazara/Graphics/Billboard.cpp
@@ -30,7 +30,7 @@ namespace Nz
 		if (!m_material)
 			return;
 
-		renderQueue->AddBillboard(instanceData.renderOrder, m_material, instanceData.transformMatrix.GetTranslation(), m_size, m_sinCos, m_color);
+		renderQueue->AddBillboard(instanceData.renderOrder, m_material, instanceData.transformMatrix->GetTranslation(), m_size, m_sinCos, m_color);
 	}
 
 	/*
diff --git a/src/Nazara/Graphics/InstancedRenderable.cpp b/src/Nazara/Graphics/InstancedRenderable.cpp
index ef5f62b96..03da17984 100644
--- a/src/Nazara/Graphics/InstancedRenderable.cpp
+++ b/src/Nazara/Graphics/InstancedRenderable.cpp
@@ -80,7 +80,7 @@ namespace Nz
 		NazaraAssert(instanceData, "Invalid instance data");
 		NazaraUnused(instanceData);
 
-		instanceData->volume.Update(instanceData->transformMatrix);
+		instanceData->volume.Update(*instanceData->transformMatrix);
 	}
 
 	/*!
diff --git a/src/Nazara/Graphics/Material.cpp b/src/Nazara/Graphics/Material.cpp
index bfc6ee88a..651f2581c 100644
--- a/src/Nazara/Graphics/Material.cpp
+++ b/src/Nazara/Graphics/Material.cpp
@@ -170,6 +170,9 @@ namespace Nz
 		if (matData.GetColorParameter(MaterialData::AmbientColor, &color))
 			SetAmbientColor(color);
 
+		if (matData.GetIntegerParameter(MaterialData::CullingSide, &iValue))
+			SetFaceCulling(static_cast<FaceSide>(iValue));
+
 		if (matData.GetIntegerParameter(MaterialData::DepthFunc, &iValue))
 			SetDepthFunc(static_cast<RendererComparison>(iValue));
 
@@ -182,9 +185,6 @@ namespace Nz
 		if (matData.GetIntegerParameter(MaterialData::DstBlend, &iValue))
 			SetDstBlend(static_cast<BlendFunc>(iValue));
 
-		if (matData.GetIntegerParameter(MaterialData::FaceCulling, &iValue))
-			SetFaceCulling(static_cast<FaceSide>(iValue));
-
 		if (matData.GetIntegerParameter(MaterialData::FaceFilling, &iValue))
 			SetFaceFilling(static_cast<FaceFilling>(iValue));
 
@@ -310,10 +310,108 @@ namespace Nz
 		SetShader(matParams.shaderName);
 	}
 
+	void Material::SaveToParameters(ParameterList* matData)
+	{
+		NazaraAssert(matData, "Invalid ParameterList");
+
+		matData->SetParameter(MaterialData::AlphaTest, IsAlphaTestEnabled());
+		matData->SetParameter(MaterialData::AlphaThreshold, GetAlphaThreshold());
+		matData->SetParameter(MaterialData::AmbientColor, GetAmbientColor());
+		matData->SetParameter(MaterialData::CullingSide, int(GetFaceCulling()));
+		matData->SetParameter(MaterialData::DepthFunc, int(GetDepthFunc()));
+		matData->SetParameter(MaterialData::DepthSorting, IsDepthSortingEnabled());
+		matData->SetParameter(MaterialData::DiffuseColor, GetDiffuseColor());
+		matData->SetParameter(MaterialData::DstBlend, int(GetDstBlend()));
+		matData->SetParameter(MaterialData::FaceFilling, int(GetFaceFilling()));
+		matData->SetParameter(MaterialData::Lighting, IsLightingEnabled());
+		matData->SetParameter(MaterialData::LineWidth, GetRenderStates().lineWidth);
+		matData->SetParameter(MaterialData::PointSize, GetRenderStates().pointSize);
+		matData->SetParameter(MaterialData::Shininess, GetShininess());
+		matData->SetParameter(MaterialData::SpecularColor, GetSpecularColor());
+		matData->SetParameter(MaterialData::SrcBlend, int(GetSrcBlend()));
+		matData->SetParameter(MaterialData::Transform, IsTransformEnabled());
+
+		// RendererParameter
+		matData->SetParameter(MaterialData::Blending, GetRenderStates().parameters[RendererParameter_Blend]);
+		matData->SetParameter(MaterialData::ColorWrite, GetRenderStates().parameters[RendererParameter_ColorWrite]);
+		matData->SetParameter(MaterialData::DepthBuffer, GetRenderStates().parameters[RendererParameter_DepthBuffer]);
+		matData->SetParameter(MaterialData::DepthWrite, GetRenderStates().parameters[RendererParameter_DepthWrite]);
+		matData->SetParameter(MaterialData::FaceCulling, GetRenderStates().parameters[RendererParameter_FaceCulling]);
+		matData->SetParameter(MaterialData::ScissorTest, GetRenderStates().parameters[RendererParameter_ScissorTest]);
+		matData->SetParameter(MaterialData::StencilTest, GetRenderStates().parameters[RendererParameter_StencilTest]);
+
+		// Samplers
+		matData->SetParameter(MaterialData::DiffuseAnisotropyLevel, int(GetDiffuseSampler().GetAnisotropicLevel()));
+		matData->SetParameter(MaterialData::DiffuseFilter, int(GetDiffuseSampler().GetFilterMode()));
+		matData->SetParameter(MaterialData::DiffuseWrap, int(GetDiffuseSampler().GetWrapMode()));
+
+		matData->SetParameter(MaterialData::SpecularAnisotropyLevel, int(GetSpecularSampler().GetAnisotropicLevel()));
+		matData->SetParameter(MaterialData::SpecularFilter, int(GetSpecularSampler().GetFilterMode()));
+		matData->SetParameter(MaterialData::SpecularWrap, int(GetSpecularSampler().GetWrapMode()));
+
+		// Stencil
+		matData->SetParameter(MaterialData::StencilCompare, int(GetRenderStates().frontFace.stencilCompare));
+		matData->SetParameter(MaterialData::StencilFail, int(GetRenderStates().frontFace.stencilFail));
+		matData->SetParameter(MaterialData::StencilPass, int(GetRenderStates().frontFace.stencilPass));
+		matData->SetParameter(MaterialData::StencilZFail, int(GetRenderStates().frontFace.stencilZFail));
+		matData->SetParameter(MaterialData::StencilMask, int(GetRenderStates().frontFace.stencilMask));
+		matData->SetParameter(MaterialData::StencilReference, int(GetRenderStates().frontFace.stencilReference));
+
+		// Stencil (back)
+		matData->SetParameter(MaterialData::BackFaceStencilCompare, int(GetRenderStates().backFace.stencilCompare));
+		matData->SetParameter(MaterialData::BackFaceStencilFail, int(GetRenderStates().backFace.stencilFail));
+		matData->SetParameter(MaterialData::BackFaceStencilPass, int(GetRenderStates().backFace.stencilPass));
+		matData->SetParameter(MaterialData::BackFaceStencilZFail, int(GetRenderStates().backFace.stencilZFail));
+		matData->SetParameter(MaterialData::BackFaceStencilMask, int(GetRenderStates().backFace.stencilMask));
+		matData->SetParameter(MaterialData::BackFaceStencilReference, int(GetRenderStates().backFace.stencilReference));
+
+		// Textures
+		if (HasAlphaMap())
+		{
+			const String& path = GetAlphaMap()->GetFilePath();
+			if (!path.IsEmpty())
+				matData->SetParameter(MaterialData::AlphaTexturePath, path);
+		}
+
+		if (HasDiffuseMap())
+		{
+			const String& path = GetDiffuseMap()->GetFilePath();
+			if (!path.IsEmpty())
+				matData->SetParameter(MaterialData::DiffuseTexturePath, path);
+		}
+
+		if (HasEmissiveMap())
+		{
+			const String& path = GetEmissiveMap()->GetFilePath();
+			if (!path.IsEmpty())
+				matData->SetParameter(MaterialData::EmissiveTexturePath, path);
+		}
+
+		if (HasHeightMap())
+		{
+			const String& path = GetHeightMap()->GetFilePath();
+			if (!path.IsEmpty())
+				matData->SetParameter(MaterialData::HeightTexturePath, path);
+		}
+
+		if (HasNormalMap())
+		{
+			const String& path = GetNormalMap()->GetFilePath();
+			if (!path.IsEmpty())
+				matData->SetParameter(MaterialData::NormalTexturePath, path);
+		}
+
+		if (HasSpecularMap())
+		{
+			const String& path = GetSpecularMap()->GetFilePath();
+			if (!path.IsEmpty())
+				matData->SetParameter(MaterialData::SpecularTexturePath, path);
+		}
+	}
+
 	/*!
 	* \brief Resets the material, cleans everything
 	*/
-
 	void Material::Reset()
 	{
 		OnMaterialReset(this);
diff --git a/src/Nazara/Graphics/Model.cpp b/src/Nazara/Graphics/Model.cpp
index d382c77d9..2b9e03cc1 100644
--- a/src/Nazara/Graphics/Model.cpp
+++ b/src/Nazara/Graphics/Model.cpp
@@ -82,7 +82,7 @@ namespace Nz
 			meshData.primitiveMode = mesh->GetPrimitiveMode();
 			meshData.vertexBuffer = mesh->GetVertexBuffer();
 
-			renderQueue->AddMesh(instanceData.renderOrder, material, meshData, mesh->GetAABB(), instanceData.transformMatrix);
+			renderQueue->AddMesh(instanceData.renderOrder, material, meshData, mesh->GetAABB(), *instanceData.transformMatrix);
 		}
 	}
 
diff --git a/src/Nazara/Graphics/SkeletalModel.cpp b/src/Nazara/Graphics/SkeletalModel.cpp
index b91ac0076..8621d1fce 100644
--- a/src/Nazara/Graphics/SkeletalModel.cpp
+++ b/src/Nazara/Graphics/SkeletalModel.cpp
@@ -69,7 +69,7 @@ namespace Nz
 			meshData.primitiveMode = mesh->GetPrimitiveMode();
 			meshData.vertexBuffer = SkinningManager::GetBuffer(mesh, &m_skeleton);
 
-			renderQueue->AddMesh(instanceData.renderOrder, material, meshData, m_skeleton.GetAABB(), instanceData.transformMatrix);
+			renderQueue->AddMesh(instanceData.renderOrder, material, meshData, m_skeleton.GetAABB(), *instanceData.transformMatrix);
 		}
 	}
 
diff --git a/src/Nazara/Graphics/Sprite.cpp b/src/Nazara/Graphics/Sprite.cpp
index 76bf5fff2..4bf076183 100644
--- a/src/Nazara/Graphics/Sprite.cpp
+++ b/src/Nazara/Graphics/Sprite.cpp
@@ -58,19 +58,19 @@ namespace Nz
 		SparsePtr<Vector2f> texCoordPtr(&vertices[0].uv, sizeof(VertexStruct_XYZ_Color_UV));
 
 		*colorPtr++ = m_color;
-		*posPtr++ = instanceData->transformMatrix.Transform(Vector3f(0.f));
+		*posPtr++ = instanceData->transformMatrix->Transform(Vector3f(0.f));
 		*texCoordPtr++ = m_textureCoords.GetCorner(RectCorner_LeftTop);
 
 		*colorPtr++ = m_color;
-		*posPtr++ = instanceData->transformMatrix.Transform(m_size.x*Vector3f::Right());
+		*posPtr++ = instanceData->transformMatrix->Transform(m_size.x*Vector3f::Right());
 		*texCoordPtr++ = m_textureCoords.GetCorner(RectCorner_RightTop);
 
 		*colorPtr++ = m_color;
-		*posPtr++ = instanceData->transformMatrix.Transform(m_size.y*Vector3f::Down());
+		*posPtr++ = instanceData->transformMatrix->Transform(m_size.y*Vector3f::Down());
 		*texCoordPtr++ = m_textureCoords.GetCorner(RectCorner_LeftBottom);
 
 		*colorPtr++ = m_color;
-		*posPtr++ = instanceData->transformMatrix.Transform(m_size.x*Vector3f::Right() + m_size.y*Vector3f::Down());
+		*posPtr++ = instanceData->transformMatrix->Transform(m_size.x*Vector3f::Right() + m_size.y*Vector3f::Down());
 		*texCoordPtr++ = m_textureCoords.GetCorner(RectCorner_RightBottom);
 	}
 
diff --git a/src/Nazara/Graphics/TextSprite.cpp b/src/Nazara/Graphics/TextSprite.cpp
index 42dba4aaf..2f1d733b4 100644
--- a/src/Nazara/Graphics/TextSprite.cpp
+++ b/src/Nazara/Graphics/TextSprite.cpp
@@ -310,7 +310,7 @@ namespace Nz
 					Vector3f localPos = localVertex->position.x*Vector3f::Right() + localVertex->position.y*Vector3f::Down();
 					localPos *= m_scale;
 
-					*pos++ = instanceData->transformMatrix.Transform(localPos);
+					*pos++ = instanceData->transformMatrix->Transform(localPos);
 					*color++ = m_color * localVertex->color;
 					*uv++ = localVertex->uv;
 
diff --git a/src/Nazara/Renderer/Texture.cpp b/src/Nazara/Renderer/Texture.cpp
index b8bed61a0..458fb9992 100644
--- a/src/Nazara/Renderer/Texture.cpp
+++ b/src/Nazara/Renderer/Texture.cpp
@@ -582,6 +582,9 @@ namespace Nz
 			}
 		}
 
+		// Keep resource path info
+		SetFilePath(image.GetFilePath());
+
 		destroyOnExit.Reset();
 
 		return true;
diff --git a/src/Nazara/Utility/Formats/OBJLoader.cpp b/src/Nazara/Utility/Formats/OBJLoader.cpp
index 05b39f81f..720b5ec5d 100644
--- a/src/Nazara/Utility/Formats/OBJLoader.cpp
+++ b/src/Nazara/Utility/Formats/OBJLoader.cpp
@@ -123,8 +123,8 @@ namespace Nz
 			if (!parameters.custom.GetIntegerParameter("NativeOBJLoader_VertexCount", &reservedVertexCount))
 				reservedVertexCount = 100;
 
-			OBJParser parser(stream);
-			if (!parser.Parse(reservedVertexCount))
+			OBJParser parser;
+			if (!parser.Parse(stream, reservedVertexCount))
 			{
 				NazaraError("OBJ parser failed");
 				return false;
@@ -177,23 +177,24 @@ namespace Nz
 				{
 					bool operator()(const OBJParser::FaceVertex& lhs, const OBJParser::FaceVertex& rhs) const
 					{
-						return lhs.normal == rhs.normal &&
+						return lhs.normal   == rhs.normal   &&
 						       lhs.position == rhs.position &&
 						       lhs.texCoord == rhs.texCoord;
 					}
 				};
 
 				std::unordered_map<OBJParser::FaceVertex, unsigned int, FaceVertexHasher, FaceVertexComparator> vertices;
+				vertices.reserve(meshes[i].vertices.size());
 
 				unsigned int vertexCount = 0;
 				for (unsigned int j = 0; j < faceCount; ++j)
 				{
-					unsigned int faceVertexCount = meshes[i].faces[j].vertices.size();
+					unsigned int faceVertexCount = meshes[i].faces[j].vertexCount;
 					faceIndices.resize(faceVertexCount);
 
 					for (unsigned int k = 0; k < faceVertexCount; ++k)
 					{
-						const OBJParser::FaceVertex& vertex = meshes[i].faces[j].vertices[k];
+						const OBJParser::FaceVertex& vertex = meshes[i].vertices[meshes[i].faces[j].firstVertex + k];
 
 						auto it = vertices.find(vertex);
 						if (it == vertices.end())
@@ -202,6 +203,7 @@ namespace Nz
 						faceIndices[k] = it->second;
 					}
 
+					// Triangulation
 					for (unsigned int k = 1; k < faceVertexCount-1; ++k)
 					{
 						indices.push_back(faceIndices[0]);
@@ -233,17 +235,17 @@ namespace Nz
 
 					MeshVertex& vertex = meshVertices[index];
 
-					const Vector4f& vec = positions[vertexIndices.position];
+					const Vector4f& vec = positions[vertexIndices.position-1];
 					vertex.position = Vector3f(parameters.matrix * vec);
 
-					if (vertexIndices.normal >= 0)
-						vertex.normal = normals[vertexIndices.normal];
+					if (vertexIndices.normal > 0)
+						vertex.normal = normals[vertexIndices.normal-1];
 					else
 						hasNormals = false;
 
-					if (vertexIndices.texCoord >= 0)
+					if (vertexIndices.texCoord > 0)
 					{
-						const Vector3f& uvw = texCoords[vertexIndices.texCoord];
+						const Vector3f& uvw = texCoords[vertexIndices.texCoord-1];
 						vertex.uv.Set(uvw.x, (parameters.flipUVs) ? 1.f - uvw.y : uvw.y); // Inversion des UVs si demandé
 					}
 					else
diff --git a/src/Nazara/Utility/Formats/OBJParser.cpp b/src/Nazara/Utility/Formats/OBJParser.cpp
index c0daf1f84..a05ef6960 100644
--- a/src/Nazara/Utility/Formats/OBJParser.cpp
+++ b/src/Nazara/Utility/Formats/OBJParser.cpp
@@ -3,7 +3,7 @@
 // For conditions of distribution and use, see copyright notice in Config.hpp
 
 #include <Nazara/Utility/Formats/OBJParser.hpp>
-#include <Nazara/Core/Error.hpp>
+#include <Nazara/Core/CallOnExit.hpp>
 #include <Nazara/Core/Log.hpp>
 #include <Nazara/Utility/Config.hpp>
 #include <cctype>
@@ -13,77 +13,22 @@
 
 namespace Nz
 {
-	OBJParser::OBJParser(Stream& stream) :
-	m_stream(stream),
-	m_streamFlags(stream.GetStreamOptions()) //< Saves stream flags
+	bool OBJParser::Parse(Nz::Stream& stream, std::size_t reservedVertexCount)
 	{
-		m_stream.EnableTextMode(true);
-	}
+		m_currentStream = &stream;
 
-	OBJParser::~OBJParser()
-	{
-		// Reset stream flags
-		if ((m_streamFlags & StreamOption_Text) == 0)
-			m_stream.EnableTextMode(false);
-	}
+		// Force stream in text mode, reset it at the end
+		Nz::CallOnExit resetTextMode;
+		if ((stream.GetStreamOptions() & StreamOption_Text) == 0)
+		{
+			stream.EnableTextMode(true);
 
-	const String* OBJParser::GetMaterials() const
-	{
-		return m_materials.data();
-	}
+			resetTextMode.Reset([&stream] ()
+			{
+				stream.EnableTextMode(false);
+			});
+		}
 
-	unsigned int OBJParser::GetMaterialCount() const
-	{
-		return m_materials.size();
-	}
-
-	const OBJParser::Mesh* OBJParser::GetMeshes() const
-	{
-		return m_meshes.data();
-	}
-
-	unsigned int OBJParser::GetMeshCount() const
-	{
-		return m_meshes.size();
-	}
-
-	const String& OBJParser::GetMtlLib() const
-	{
-		return m_mtlLib;
-	}
-
-	const Vector3f* OBJParser::GetNormals() const
-	{
-		return m_normals.data();
-	}
-
-	unsigned int OBJParser::GetNormalCount() const
-	{
-		return m_normals.size();
-	}
-
-	const Vector4f* OBJParser::GetPositions() const
-	{
-		return m_positions.data();
-	}
-
-	unsigned int OBJParser::GetPositionCount() const
-	{
-		return m_positions.size();
-	}
-
-	const Vector3f* OBJParser::GetTexCoords() const
-	{
-		return m_texCoords.data();
-	}
-
-	unsigned int OBJParser::GetTexCoordCount() const
-	{
-		return m_texCoords.size();
-	}
-
-	bool OBJParser::Parse(std::size_t reservedVertexCount)
-	{
 		String matName, meshName;
 		matName = meshName = "default";
 		m_keepLastLine = false;
@@ -100,32 +45,56 @@ namespace Nz
 		m_positions.reserve(reservedVertexCount);
 		m_texCoords.reserve(reservedVertexCount);
 
-		// On va regrouper les meshs par nom et par matériau
-		using FaceVec = std::vector<Face>;
-		using MatPair = std::pair<FaceVec, unsigned int>;
-		std::unordered_map<String, std::unordered_map<String, MatPair>> meshes;
+		// Sort meshes by material and group
+		using MatPair = std::pair<Mesh, unsigned int>;
+		std::unordered_map<String, std::unordered_map<String, MatPair>> meshesByName;
 
-		unsigned int matIndex = 0;
-		auto GetMaterial = [&meshes, &matIndex] (const String& mesh, const String& material) -> FaceVec*
+		std::size_t faceReserve = 0;
+		std::size_t vertexReserve = 0;
+		unsigned int matCount = 0;
+		auto GetMaterial = [&] (const String& meshName, const String& matName) -> Mesh*
 		{
-			auto& map = meshes[mesh];
-			auto it = map.find(material);
+			auto& map = meshesByName[meshName];
+			auto it = map.find(matName);
 			if (it == map.end())
-				it = map.insert(std::make_pair(material, MatPair(FaceVec(), matIndex++))).first;
+				it = map.insert(std::make_pair(matName, MatPair(Mesh(), matCount++))).first;
+
+			Mesh& mesh = it->second.first;
+
+			mesh.faces.reserve(faceReserve);
+			mesh.vertices.reserve(vertexReserve);
+			faceReserve = 0;
+			vertexReserve = 0;
 
 			return &(it->second.first);
 		};
 
 		// On prépare le mesh par défaut
-		FaceVec* currentMesh = nullptr;
+		Mesh* currentMesh = nullptr;
 
 		while (Advance(false))
 		{
 			switch (std::tolower(m_currentLine[0]))
 			{
-				case 'f': // Une face
+				case '#': //< Comment
+					// Some softwares write comments to gives the number of vertex/faces an importer can expect
+					std::size_t data;
+					if (std::sscanf(m_currentLine.GetConstBuffer(), "# position count: %zu", &data) == 1)
+						m_positions.reserve(data);
+					else if (std::sscanf(m_currentLine.GetConstBuffer(), "# normal count: %zu", &data) == 1)
+						m_normals.reserve(data);
+					else if (std::sscanf(m_currentLine.GetConstBuffer(), "# texcoords count: %zu", &data) == 1)
+						m_texCoords.reserve(data);
+					else if (std::sscanf(m_currentLine.GetConstBuffer(), "# face count: %zu", &data) == 1)
+						faceReserve = data;
+					else if (std::sscanf(m_currentLine.GetConstBuffer(), "# vertex count: %zu", &data) == 1)
+						vertexReserve = data;
+
+					break;
+
+				case 'f': //< Face
 				{
-					if (m_currentLine.GetSize() < 7) // Le minimum syndical pour définir une face de trois sommets (f 1 2 3)
+					if (m_currentLine.GetSize() < 7) // Since we only treat triangles, this is the minimum length of a face line (f 1 2 3)
 					{
 						#if NAZARA_UTILITY_STRICT_RESOURCE_PARSING
 						UnrecognizedLine();
@@ -142,17 +111,23 @@ namespace Nz
 						break;
 					}
 
+					if (!currentMesh)
+						currentMesh = GetMaterial(meshName, matName);
+
 					Face face;
-					face.vertices.resize(vertexCount);
+					face.firstVertex = currentMesh->vertices.size();
+					face.vertexCount = vertexCount;
+
+					currentMesh->vertices.resize(face.firstVertex + vertexCount, FaceVertex{0, 0, 0});
 
 					bool error = false;
 					unsigned int pos = 2;
 					for (unsigned int i = 0; i < vertexCount; ++i)
 					{
 						int offset;
-						int& n = face.vertices[i].normal;
-						int& p = face.vertices[i].position;
-						int& t = face.vertices[i].texCoord;
+						int& n = currentMesh->vertices[face.firstVertex + i].normal;
+						int& p = currentMesh->vertices[face.firstVertex + i].position;
+						int& t = currentMesh->vertices[face.firstVertex + i].texCoord;
 
 						if (std::sscanf(&m_currentLine[pos], "%d/%d/%d%n", &p, &t, &n, &offset) != 3)
 						{
@@ -168,22 +143,13 @@ namespace Nz
 										error = true;
 										break;
 									}
-									else
-									{
-										n = 0;
-										t = 0;
-									}
 								}
-								else
-									n = 0;
 							}
-							else
-								t = 0;
 						}
 
 						if (p < 0)
 						{
-							p += m_positions.size();
+							p += m_positions.size() - 1;
 							if (p < 0)
 							{
 								Error("Vertex index out of range (" + String::Number(p) + " < 0");
@@ -191,48 +157,42 @@ namespace Nz
 								break;
 							}
 						}
-						else
-							p--;
 
 						if (n < 0)
 						{
-							n += m_normals.size();
+							n += m_normals.size() - 1;
 							if (n < 0)
 							{
-								Error("Vertex index out of range (" + String::Number(n) + " < 0");
+								Error("Normal index out of range (" + String::Number(n) + " < 0");
 								error = true;
 								break;
 							}
 						}
-						else
-							n--;
 
 						if (t < 0)
 						{
-							t += m_texCoords.size();
+							t += m_texCoords.size() - 1;
 							if (t < 0)
 							{
-								Error("Vertex index out of range (" + String::Number(t) + " < 0");
+								Error("Texture coordinates index out of range (" + String::Number(t) + " < 0");
 								error = true;
 								break;
 							}
 						}
-						else
-							t--;
 
-						if (static_cast<unsigned int>(p) >= m_positions.size())
+						if (static_cast<std::size_t>(p) > m_positions.size())
 						{
 							Error("Vertex index out of range (" + String::Number(p) + " >= " + String::Number(m_positions.size()) + ')');
 							error = true;
 							break;
 						}
-						else if (n >= 0 && static_cast<unsigned int>(n) >= m_normals.size())
+						else if (n != 0 && static_cast<std::size_t>(n) > m_normals.size())
 						{
 							Error("Normal index out of range (" + String::Number(n) + " >= " + String::Number(m_normals.size()) + ')');
 							error = true;
 							break;
 						}
-						else if (t >= 0 && static_cast<unsigned int>(t) >= m_texCoords.size())
+						else if (t != 0 && static_cast<std::size_t>(t) > m_texCoords.size())
 						{
 							Error("TexCoord index out of range (" + String::Number(t) + " >= " + String::Number(m_texCoords.size()) + ')');
 							error = true;
@@ -243,17 +203,14 @@ namespace Nz
 					}
 
 					if (!error)
-					{
-						if (!currentMesh)
-							currentMesh = GetMaterial(meshName, matName);
-
-						currentMesh->push_back(std::move(face));
-					}
+						currentMesh->faces.push_back(std::move(face));
+					else
+						currentMesh->vertices.resize(face.firstVertex); //< Remove vertices
 
 					break;
 				}
 
-				case 'm':
+				case 'm': //< MTLLib
 					#if NAZARA_UTILITY_STRICT_RESOURCE_PARSING
 					if (m_currentLine.GetWord(0).ToLower() != "mtllib")
 						UnrecognizedLine();
@@ -262,8 +219,8 @@ namespace Nz
 					m_mtlLib = m_currentLine.SubString(m_currentLine.GetWordPosition(1));
 					break;
 
-				case 'g':
-				case 'o':
+				case 'g': //< Group (inside a mesh)
+				case 'o': //< Object (defines a mesh)
 				{
 					if (m_currentLine.GetSize() <= 2 || m_currentLine[1] != ' ')
 					{
@@ -283,12 +240,12 @@ namespace Nz
 					}
 
 					meshName = objectName;
-					currentMesh = GetMaterial(meshName, matName);
+					currentMesh = nullptr;
 					break;
 				}
 
 				#if NAZARA_UTILITY_STRICT_RESOURCE_PARSING
-				case 's':
+				case 's': //< Smooth
 					if (m_currentLine.GetSize() <= 2 || m_currentLine[1] == ' ')
 					{
 						String param = m_currentLine.SubString(2);
@@ -298,15 +255,16 @@ namespace Nz
 					else
 						UnrecognizedLine();
 					break;
-				#endif
+					#endif
 
-				case 'u':
+				case 'u': //< Usemtl
 					#if NAZARA_UTILITY_STRICT_RESOURCE_PARSING
 					if (m_currentLine.GetWord(0) != "usemtl")
 						UnrecognizedLine();
 					#endif
 
 					matName = m_currentLine.SubString(m_currentLine.GetWordPosition(1));
+					currentMesh = nullptr;
 					if (matName.IsEmpty())
 					{
 						#if NAZARA_UTILITY_STRICT_RESOURCE_PARSING
@@ -314,18 +272,16 @@ namespace Nz
 						#endif
 						break;
 					}
-
-					currentMesh = GetMaterial(meshName, matName);
 					break;
 
-				case 'v':
+				case 'v': //< Position/Normal/Texcoords
 				{
 					String word = m_currentLine.GetWord(0).ToLower();
 					if (word == 'v')
 					{
 						Vector4f vertex(Vector3f::Zero(), 1.f);
 						unsigned int paramCount = std::sscanf(&m_currentLine[2], "%f %f %f %f", &vertex.x, &vertex.y, &vertex.z, &vertex.w);
-						if (paramCount >= 3)
+						if (paramCount >= 1)
 							m_positions.push_back(vertex);
 						#if NAZARA_UTILITY_STRICT_RESOURCE_PARSING
 						else
@@ -371,26 +327,24 @@ namespace Nz
 		}
 
 		std::unordered_map<String, unsigned int> materials;
-		m_materials.resize(matIndex);
+		m_materials.resize(matCount);
 
-		for (auto& meshIt : meshes)
+		for (auto& meshPair : meshesByName)
 		{
-			for (auto& matIt : meshIt.second)
+			for (auto& matPair : meshPair.second)
 			{
-				auto& faceVec = matIt.second.first;
-				unsigned int index = matIt.second.second;
-				if (!faceVec.empty())
+				Mesh& mesh = matPair.second.first;
+				unsigned int index = matPair.second.second;
+				if (!mesh.faces.empty())
 				{
-					Mesh mesh;
-					mesh.faces = std::move(faceVec);
-					mesh.name = meshIt.first;
+					mesh.name = meshPair.first;
 
-					auto it = materials.find(matIt.first);
+					auto it = materials.find(matPair.first);
 					if (it == materials.end())
 					{
 						mesh.material = index;
-						materials[matIt.first] = index;
-						m_materials[index] = matIt.first;
+						materials[matPair.first] = index;
+						m_materials[index] = matPair.first;
 					}
 					else
 						mesh.material = it->second;
@@ -409,13 +363,155 @@ namespace Nz
 		return true;
 	}
 
+	bool OBJParser::Save(Stream& stream) const
+	{
+		m_currentStream = &stream;
+
+		// Force stream in text mode, reset it at the end
+		Nz::CallOnExit resetTextMode;
+		if ((stream.GetStreamOptions() & StreamOption_Text) == 0)
+		{
+			stream.EnableTextMode(true);
+
+			resetTextMode.Reset([&stream] ()
+			{
+				stream.EnableTextMode(false);
+			});
+		}
+
+		m_outputStream.Clear();
+
+		EmitLine("# Exported by Nazara Engine");
+
+		if (!m_mtlLib.IsEmpty())
+		{
+			Emit("mtlib ");
+			EmitLine(m_mtlLib);
+			EmitLine();
+		}
+
+		Emit("# position count: ");
+		EmitLine(m_positions.size());
+
+		for (const Nz::Vector4f& position : m_positions)
+		{
+			Emit("v ");
+			Emit(position.x);
+			Emit(' ');
+			Emit(position.y);
+			if (!NumberEquals(position.z, 0.f) || !NumberEquals(position.w, 1.f))
+			{
+				Emit(' ');
+				Emit(position.z);
+
+				if (!NumberEquals(position.w, 1.f))
+				{
+					Emit(' ');
+					Emit(position.w);
+				}
+			}
+			EmitLine();
+		}
+		EmitLine();
+
+		Emit("# normal count: ");
+		EmitLine(m_normals.size());
+
+		for (const Nz::Vector3f& normal : m_normals)
+		{
+			Emit("vn ");
+			Emit(normal.x);
+			Emit(' ');
+			Emit(normal.y);
+			Emit(' ');
+			Emit(normal.y);
+			EmitLine();
+		}
+		EmitLine();
+
+		Emit("# texcoords count: ");
+		EmitLine(m_texCoords.size());
+
+		for (const Nz::Vector3f& uvw : m_texCoords)
+		{
+			Emit("vt ");
+			Emit(uvw.x);
+			Emit(' ');
+			Emit(uvw.y);
+			if (NumberEquals(uvw.z, 0.f))
+			{
+				Emit(' ');
+				Emit(uvw.z);
+			}
+			EmitLine();
+		}
+		EmitLine();
+
+		std::unordered_map<std::size_t /* mesh */, std::vector<std::size_t> /* meshes*/> meshesByMaterials;
+		std::size_t meshIndex = 0;
+		for (const Mesh& mesh : m_meshes)
+			meshesByMaterials[mesh.material].push_back(meshIndex++);
+
+		for (auto& pair : meshesByMaterials)
+		{
+			Emit("usemtl ");
+			EmitLine(m_materials[pair.first]);
+			Emit("# groups count: ");
+			EmitLine(pair.second.size());
+			EmitLine();
+
+			for (std::size_t meshIndex : pair.second)
+			{
+				const Mesh& mesh = m_meshes[meshIndex];
+
+				Emit("g ");
+				EmitLine(mesh.name);
+				EmitLine();
+				
+				Emit("# face count: ");
+				EmitLine(mesh.faces.size());
+				Emit("# vertex count: ");
+				EmitLine(mesh.vertices.size());
+				
+				for (const Face& face : mesh.faces)
+				{
+					Emit('f');
+					for (std::size_t i = 0; i < face.vertexCount; ++i)
+					{
+						Emit(' ');
+						const FaceVertex& faceVertex = mesh.vertices[face.firstVertex + i];
+						Emit(faceVertex.position);
+						if (faceVertex.texCoord != 0 || faceVertex.normal != 0)
+						{
+							Emit('/');
+							if (faceVertex.texCoord != 0)
+								Emit(faceVertex.texCoord);
+
+							if (faceVertex.normal != 0)
+							{
+								Emit('/');
+								Emit(faceVertex.normal);
+							}
+						}
+					}
+					EmitLine();
+				}
+			}
+			EmitLine();
+		}
+
+		Flush();
+
+		return true;
+	}
+
 	bool OBJParser::Advance(bool required)
 	{
 		if (!m_keepLastLine)
 		{
 			do
 			{
-				if (m_stream.EndOfStream())
+				if (m_currentStream->EndOfStream())
 				{
 					if (required)
 						Error("Incomplete OBJ file");
@@ -425,9 +521,8 @@ namespace Nz
 
 				m_lineCount++;
 
-				m_currentLine = m_stream.ReadLine();
-				m_currentLine = m_currentLine.SubStringTo("#"); // On ignore les commentaires
-				m_currentLine.Simplify(); // Pour un traitement plus simple
+				m_currentLine = m_currentStream->ReadLine();
+				m_currentLine.Simplify(); // Simplify lines (convert multiple blanks into a single space and trims)
 			}
 			while (m_currentLine.IsEmpty());
 		}
@@ -436,24 +531,4 @@ namespace Nz
 
 		return true;
 	}
-
-	void OBJParser::Error(const String& message)
-	{
-		NazaraError(message + " at line #" + String::Number(m_lineCount));
-	}
-
-	void OBJParser::Warning(const String& message)
-	{
-		NazaraWarning(message + " at line #" + String::Number(m_lineCount));
-	}
-
-	void OBJParser::UnrecognizedLine(bool error)
-	{
-		String message = "Unrecognized \"" + m_currentLine + '"';
-
-		if (error)
-			Error(message);
-		else
-			Warning(message);
-		}
 }