diff --git a/bumpmappedmesh.cpp b/bumpmappedmesh.cpp
new file mode 100644
index 0000000..91fa3ec
--- /dev/null
+++ b/bumpmappedmesh.cpp
@@ -0,0 +1,30 @@
+#include "bumpmappedmesh.h"
+#include "glassert.h"
+
+void BumpMappedMesh::addVertex(const SRFVertex& v)
+{
+    if(!locked)
+        vertices.push_back(v);
+}
+
+void BumpMappedMesh::setAttribPointer()
+{
+    glAssert(glBindVertexArray(vao));
+    glAssert(glBindBuffer(GL_ARRAY_BUFFER, vbo[VERTEX_BUFFER]));
+
+    // position attribute
+    glAssert(glVertexAttribPointer(0, 3, GL_FLOAT, GL_FALSE, sizeof(SRFVertex), BUFFER_OFFSET(0)));
+    glAssert(glEnableVertexAttribArray(0));
+    // normal attribute
+    glAssert(glVertexAttribPointer(1, 3, GL_FLOAT, GL_FALSE, sizeof(SRFVertex), BUFFER_OFFSET(sizeof(glm::vec3))));
+    glAssert(glEnableVertexAttribArray(1));
+    // texCoord attribute
+    glAssert(glVertexAttribPointer(2, 2, GL_FLOAT, GL_FALSE, sizeof(SRFVertex), BUFFER_OFFSET(2*sizeof(glm::vec3))));
+    glAssert(glEnableVertexAttribArray(2));
+    // normal attribute
+    glAssert(glVertexAttribPointer(3, 3, GL_FLOAT, GL_FALSE, sizeof(SRFVertex), BUFFER_OFFSET(2*sizeof(glm::vec3)+sizeof(glm::vec2))));
+    glAssert(glEnableVertexAttribArray(3));
+    // texCoord attribute
+    glAssert(glVertexAttribPointer(4, 3, GL_FLOAT, GL_FALSE, sizeof(SRFVertex), BUFFER_OFFSET(3*sizeof(glm::vec3)+sizeof(glm::vec2))));
+    glAssert(glEnableVertexAttribArray(4));
+}
diff --git a/bumpmappedmesh.h b/bumpmappedmesh.h
new file mode 100644
index 0000000..6f6cde0
--- /dev/null
+++ b/bumpmappedmesh.h
@@ -0,0 +1,34 @@
+#ifndef BUMPMAPPEDMESH_H
+#define BUMPMAPPEDMESH_H
+
+#include "vertex.h"
+#include "mesh.h"
+
+class BumpMappedMesh : public Mesh
+{
+protected:
+    std::vector<SRFVertex> vertices;
+
+    virtual int getNbVertices()
+    {
+        return vertices.size();
+    }
+
+    virtual int getSizeofVertexType()
+    {
+        return sizeof(SRFVertex);
+    }
+
+    virtual void* getVertexData()
+    {
+        return (void*)(vertices.data());
+    }
+
+    virtual void setAttribPointer();
+
+public:
+
+    void addVertex(const SRFVertex& v);
+};
+
+#endif // BUMPMAPPEDMESH_H
diff --git a/entity.cpp b/entity.cpp
index 9e8cf3e..5b3b7ae 100644
--- a/entity.cpp
+++ b/entity.cpp
@@ -2,9 +2,9 @@
 #include "shader.h"
 #include <glm/glm.hpp>
 #include "material.h"
-#include "mesh.h"
+#include "standardmesh.h"
 
-Entity::Entity(Mesh* myMesh, Material* myMat) : mesh(myMesh), mat(myMat) {}
+Entity::Entity(StandardMesh* myMesh, Material* myMat) : mesh(myMesh), mat(myMat) {}
 
 void Entity::draw(const glm::mat4 viewMatrix, const glm::mat4 projectionMatrix)
 {
diff --git a/entity.h b/entity.h
index 5c580b9..e7acdb5 100644
--- a/entity.h
+++ b/entity.h
@@ -4,18 +4,18 @@
 #include "glm/mat4x4.hpp"
 #include <vector>
 
-class Mesh;
+class StandardMesh;
 class Material;
 class Shader;
 
 class Entity
 {
 protected:
-    Mesh* mesh;
+    StandardMesh* mesh;
     Material* mat;
     glm::mat4 modelMatrix;
 public:
-    Entity(Mesh* myMesh, Material* myMat);
+    Entity(StandardMesh* myMesh, Material* myMat);
     virtual void draw(const glm::mat4 viewMatrix, const glm::mat4 projectionMatrix);
     glm::mat4* getTransform();
     Shader* getShader();
diff --git a/gridmesh.cpp b/gridmesh.cpp
index 93700c1..69a9cd5 100644
--- a/gridmesh.cpp
+++ b/gridmesh.cpp
@@ -1,12 +1,12 @@
 #include "gridmesh.h"
 
-GridMesh::GridMesh(int width, int height, bool alternate) : Mesh(), m_width(width), m_height(height)
+GridMesh::GridMesh(int width, int height, bool alternate) : StandardMesh(), m_width(width), m_height(height)
 {
     for(int i=0; i<=width; ++i)
     {
         for(int j=0; j<=height; ++j)
         {
-            Vertex v;
+            TexturedVertex v;
             v.position = glm::vec3((float)i/(float)width, (float)j/(float)height, 0);
             v.normal = glm::vec3(0, 0, 1);
             v.texCoord = glm::vec2(v.position.x, v.position.y);
diff --git a/gridmesh.h b/gridmesh.h
index ff68368..b24ff5d 100644
--- a/gridmesh.h
+++ b/gridmesh.h
@@ -1,9 +1,9 @@
 #ifndef GRIDMESH_H
 #define GRIDMESH_H
 
-#include "mesh.h"
+#include "standardmesh.h"
 
-class GridMesh : public Mesh
+class GridMesh : public StandardMesh
 {
 public:
     GridMesh(int width, int height, bool alternate);
diff --git a/mesh.cpp b/mesh.cpp
index ab83e07..4779f9a 100644
--- a/mesh.cpp
+++ b/mesh.cpp
@@ -1,4 +1,5 @@
 #include "mesh.h"
+
 #include "glassert.h"
 
 #define BUFFER_OFFSET(i) ((char *)NULL + (i))
@@ -8,12 +9,6 @@ Mesh::~Mesh()
     destroyGL();
 }
 
-void Mesh::addVertex(const Vertex& v)
-{
-    if(!locked)
-        vertices.push_back(v);
-}
-
 void Mesh::addFace(int i1, int i2, int i3)
 {
     if(!locked)
@@ -36,19 +31,13 @@ void Mesh::initGL()
     // create VBOs
     glAssert(glGenBuffers(NB_BUFFERS, vbo));
 
+    int size = getSizeofVertexType();
+
     // init vertex vbo
     glAssert(glBindBuffer(GL_ARRAY_BUFFER, vbo[VERTEX_BUFFER]));
-    glAssert(glBufferData(GL_ARRAY_BUFFER, vertices.size() * sizeof(Vertex), vertices.data(), GL_STATIC_DRAW));
+    glAssert(glBufferData(GL_ARRAY_BUFFER, getNbVertices() * size, getVertexData(), GL_STATIC_DRAW));
 
-    // position attribute
-    glAssert(glVertexAttribPointer(0, 3, GL_FLOAT, GL_FALSE, sizeof(Vertex), BUFFER_OFFSET(0)));
-    glAssert(glEnableVertexAttribArray(0));
-    // normal attribute
-    glAssert(glVertexAttribPointer(1, 3, GL_FLOAT, GL_FALSE, sizeof(Vertex), BUFFER_OFFSET(sizeof(glm::vec3))));
-    glAssert(glEnableVertexAttribArray(1));
-    // texCoord attribute
-    glAssert(glVertexAttribPointer(2, 2, GL_FLOAT, GL_FALSE, sizeof(Vertex), BUFFER_OFFSET(2*sizeof(glm::vec3))));
-    glAssert(glEnableVertexAttribArray(2));
+    setAttribPointer();
 
     // init indices vbo
     glAssert(glBindBuffer(GL_ARRAY_BUFFER, vbo[INDICES_BUFFER]));
diff --git a/mesh.h b/mesh.h
index 8da70d3..7b49023 100644
--- a/mesh.h
+++ b/mesh.h
@@ -3,34 +3,30 @@
 
 #include <glew/glew.h>
 #include <vector>
-#include <glm/glm.hpp>
 
-class Mesh
-{
+#define BUFFER_OFFSET(i) ((char *)NULL + (i))
+
+class Mesh{
+protected:
+    enum {VERTEX_BUFFER, INDICES_BUFFER, NB_BUFFERS};
+
+    std::vector<unsigned int> indices;
+    GLuint vao;
+    GLuint vbo[2];
+    bool locked;
+
+    virtual int getNbVertices() = 0;
+    virtual int getSizeofVertexType() = 0;
+    virtual void* getVertexData() = 0;
+    virtual void setAttribPointer() = 0;
+
 public:
-    typedef struct
-    {
-        glm::vec3 position;
-        glm::vec3 normal;
-        glm::vec2 texCoord;
-    } Vertex;
-
     ~Mesh();
-    void addVertex(const Vertex& v);
     void addFace(int i1, int i2, int i3);
     void initGL();
     void destroyGL();
     void draw();
     bool isLocked(){return locked;}
-
-protected:
-    enum {VERTEX_BUFFER, INDICES_BUFFER, NB_BUFFERS};
-
-    std::vector<Vertex> vertices;
-    std::vector<unsigned int> indices;
-    GLuint vao;
-    GLuint vbo[2];
-    bool locked;
 };
 
 #endif // MESH_H
diff --git a/phongmodule.h b/phongmodule.h
index eecf6e9..c16d37d 100644
--- a/phongmodule.h
+++ b/phongmodule.h
@@ -4,7 +4,7 @@
 #include <glew/glew.h>
 #include "basicmodule.h"
 #include "phongmaterial.h"
-#include "mesh.h"
+#include "standardmesh.h"
 
 class Lights;
 
diff --git a/resourcebase.cpp b/resourcebase.cpp
index e409251..89539df 100644
--- a/resourcebase.cpp
+++ b/resourcebase.cpp
@@ -1,7 +1,7 @@
 #include "resourcebase.h"
 
 ResourceBase::DataBase<Texture> ResourceBase::textures;
-ResourceBase::DataBase<Mesh> ResourceBase::meshes;
+ResourceBase::DataBase<StandardMesh> ResourceBase::meshes;
 ResourceBase::DataBase<Material> ResourceBase::materials;
 ResourceBase::DataBase<Shader> ResourceBase::shaders;
 ResourceBase::DataBase<Entity> ResourceBase::entities;
@@ -12,7 +12,7 @@ void ResourceBase::setTexture(const std::string &textureName, Texture* myTexture
     textures.add(textureName, myTexture);
 }
 
-void ResourceBase::setMesh(const std::string &meshName, Mesh* myMesh )
+void ResourceBase::setMesh(const std::string &meshName, StandardMesh* myMesh )
 {
     meshes.add(meshName, myMesh);
 }
@@ -43,7 +43,7 @@ Texture* ResourceBase::getTexture(const std::string &textureName)
     return textures.get(textureName);
 }
 
-Mesh* ResourceBase::getMesh(const std::string &meshName)
+StandardMesh* ResourceBase::getMesh(const std::string &meshName)
 {
     return meshes.get(meshName);
 }
diff --git a/resourcebase.h b/resourcebase.h
index c1e2982..bcc6ab5 100644
--- a/resourcebase.h
+++ b/resourcebase.h
@@ -2,7 +2,7 @@
 #define RESOURCEBASE_H
 
 class Texture;
-class Mesh;
+class StandardMesh;
 class Material;
 class Shader;
 class Entity;
@@ -16,14 +16,14 @@ class ResourceBase
 {
 public:
     static void setTexture(const std::string &textureName, Texture* myTexture);
-    static void setMesh(const std::string &meshName, Mesh* myMesh);
+    static void setMesh(const std::string &meshName, StandardMesh* myMesh);
     static void setMaterial(const std::string &materialName, Material* myMaterial);
     static void setShader(const std::string &shaderName, Shader* myShader);
     static void setEntity(const std::string &entityName, Entity* myEntity);
     static void setLights(const std::string &lightsName, Lights* myLights);
 
     static Texture* getTexture(const std::string &textureName);
-    static Mesh* getMesh(const std::string &meshName);
+    static StandardMesh* getMesh(const std::string &meshName);
     static Material* getMaterial(const std::string &materialName);
     static Shader* getShader(const std::string &shaderName);
     static Entity* getEntity(const std::string &entityName);
@@ -53,7 +53,7 @@ protected:
     };
 
     static DataBase<Texture> textures;
-    static DataBase<Mesh> meshes;
+    static DataBase<StandardMesh> meshes;
     static DataBase<Material> materials;
     static DataBase<Shader> shaders;
     static DataBase<Entity> entities;
diff --git a/sparrowRenderer.pro b/sparrowRenderer.pro
index 5fb8828..a15f103 100644
--- a/sparrowRenderer.pro
+++ b/sparrowRenderer.pro
@@ -25,7 +25,6 @@ unix {
 }
 
 SOURCES += shader.cpp \
-    mesh.cpp \
     camera.cpp \
     gridmesh.cpp \
     texture.cpp \
@@ -41,10 +40,12 @@ SOURCES += shader.cpp \
     phongmodule.cpp \
     skyboxmodule.cpp \
     basicmodule.cpp \
-    framebuffer.cpp
+    framebuffer.cpp \
+    standardmesh.cpp \
+    mesh.cpp \
+    bumpmappedmesh.cpp
 
 HEADERS += shader.h \
-    mesh.h \
     camera.h \
     glassert.h \
     material.h \
@@ -64,7 +65,11 @@ HEADERS += shader.h \
     basicmodule.h \
     module.h \
     resource.h \
-    framebuffer.h
+    framebuffer.h \
+    standardmesh.h \
+    mesh.h \
+    bumpmappedmesh.h \
+    vertex.h
 
 OTHER_FILES += *.frag *.vert *.glsl *.todo
 
diff --git a/sparrowrenderer.cpp b/sparrowrenderer.cpp
index 2b141e2..8d5938a 100644
--- a/sparrowrenderer.cpp
+++ b/sparrowrenderer.cpp
@@ -62,101 +62,11 @@ void SparrowRenderer::addModule(Module* myModule, std::string name)
     modules.push_back(ModuleNode(myModule, name));
 }
 
-void SparrowRenderer::addModule(Module* myModule, std::string name, int index)
-{
-    if(index < 0)
-        index = 0;
-    if(index > modules.size())
-        modules.push_back(ModuleNode(myModule, name));
-    else
-    {
-        auto it = modules.begin();
-        std::advance(it, index);
-        modules.insert(it, ModuleNode(myModule, name));
-    }
-}
-
-void SparrowRenderer::removeModule(int index)
-{
-    auto it = modules.begin();
-    std::advance(it, index);
-    modules.erase(it);
-}
-
-void SparrowRenderer::removeModule(std::string name)
-{
-    modules.erase(getModuleNode(name));
-}
-
-Module* SparrowRenderer::getModule(int index)
-{
-    auto it = modules.begin();
-    std::advance(it, index);
-    return (*it).module;
-}
-
-Module* SparrowRenderer::getModule(std::string name)
-{
-    return (*getModuleNode(name)).module;
-}
-
-std::list<SparrowRenderer::ModuleNode>::iterator SparrowRenderer::getModuleNode(std::string name)
-{
-    for(auto iterator = modules.begin(); iterator != modules.end(); ++iterator)
-    {
-        if(iterator->name == name)
-            return iterator;
-    }
-}
-
 int SparrowRenderer::getNbModules()
 {
     return modules.size();
 }
 
-std::string SparrowRenderer::getModuleName(int index)
-{
-    auto it = modules.begin();
-    std::advance(it, index);
-    return (*it).name;
-}
-
-void SparrowRenderer::enableModule(std::string name)
-{
-    (*getModuleNode(name)).isEnabled = true;
-}
-
-void SparrowRenderer::enableModule(int index)
-{
-    auto it = modules.begin();
-    std::advance(it, index);
-    (*it).isEnabled = true;
-}
-
-void SparrowRenderer::disableModule(std::string name)
-{
-    (*getModuleNode(name)).isEnabled = false;
-}
-
-void SparrowRenderer::disableModule(int index)
-{
-    auto it = modules.begin();
-    std::advance(it, index);
-    (*it).isEnabled = false;
-}
-
-bool SparrowRenderer::isModuleEnabled(std::string name)
-{
-    return (*getModuleNode(name)).isEnabled;
-}
-
-bool SparrowRenderer::isModuleEnabled(int index)
-{
-    auto it = modules.begin();
-    std::advance(it, index);
-    return (*it).isEnabled;
-}
-
 // camera methods
 
 Camera* SparrowRenderer::getCamera()
diff --git a/sparrowrenderer.h b/sparrowrenderer.h
index 66de07a..bc19f60 100644
--- a/sparrowrenderer.h
+++ b/sparrowrenderer.h
@@ -17,20 +17,8 @@ public:
     void render();
 
     // modules methods
-    void addModule(Module* myModule, std::string name);
-    void addModule(Module* myModule, std::string name, int index);
-    void removeModule(std::string name);
-    void removeModule(int index);
-    Module* getModule(std::string name);
-    Module* getModule(int index);
-    int getNbModules();
-    std::string getModuleName(int index);
-    void enableModule(std::string name);
-    void enableModule(int index);
-    void disableModule(std::string name);
-    void disableModule(int index);
-    bool isModuleEnabled(std::string name);
-    bool isModuleEnabled(int index);
+	void addModule(Module* myModule, std::string name);
+	int getNbModules();
 
     // camera methods
     Camera* getCamera();
diff --git a/sphere.cpp b/sphere.cpp
index 20dca52..fb13ab0 100644
--- a/sphere.cpp
+++ b/sphere.cpp
@@ -1,4 +1,5 @@
 #include "sphere.h"
+#include "glm/ext.hpp"
 
 #define M_PI 3.14159265358979323846
 #define MAGIC_RATIO 0.37139f
@@ -66,9 +67,9 @@ int Sphere::getEdge(int a, int b)
         else if(current->next == NULL)
         {
             // creating subdivision vertex
-            Vertex v;
-            Vertex v0 = vertices[a];
-            Vertex v1 = vertices[b];
+            TexturedVertex v;
+            TexturedVertex v0 = vertices[a];
+            TexturedVertex v1 = vertices[b];
             v.position = glm::normalize((v0.position + v1.position)/2.f);
             v.normal = v.position;
 
@@ -98,7 +99,7 @@ int Sphere::getEdge(int a, int b)
 
 void Sphere::createVertex(float u, float v)
 {
-        Vertex vert;
+        TexturedVertex vert;
         vert.position = glm::vec3(cos(u*2*M_PI)*sin(v*M_PI),
                                    cos(v*M_PI),
                                    sin(u*2*M_PI)*sin(v*M_PI));
diff --git a/sphere.h b/sphere.h
index 8d4f5f6..238cbba 100644
--- a/sphere.h
+++ b/sphere.h
@@ -1,9 +1,9 @@
 #ifndef SPHERE_H
 #define SPHERE_H
 
-#include "mesh.h"
+#include "standardmesh.h"
 
-class Sphere : public Mesh
+class Sphere : public StandardMesh
 {
 private:
     class Edge{
diff --git a/standardmesh.cpp b/standardmesh.cpp
new file mode 100644
index 0000000..48f2a24
--- /dev/null
+++ b/standardmesh.cpp
@@ -0,0 +1,24 @@
+#include "standardmesh.h"
+#include "glassert.h"
+
+void StandardMesh::addVertex(const TexturedVertex& v)
+{
+    if(!locked)
+        vertices.push_back(v);
+}
+
+void StandardMesh::setAttribPointer()
+{
+    glAssert(glBindVertexArray(vao));
+    glAssert(glBindBuffer(GL_ARRAY_BUFFER, vbo[VERTEX_BUFFER]));
+
+    // position attribute
+    glAssert(glVertexAttribPointer(0, 3, GL_FLOAT, GL_FALSE, sizeof(TexturedVertex), BUFFER_OFFSET(0)));
+    glAssert(glEnableVertexAttribArray(0));
+    // normal attribute
+    glAssert(glVertexAttribPointer(1, 3, GL_FLOAT, GL_FALSE, sizeof(TexturedVertex), BUFFER_OFFSET(sizeof(glm::vec3))));
+    glAssert(glEnableVertexAttribArray(1));
+    // texCoord attribute
+    glAssert(glVertexAttribPointer(2, 2, GL_FLOAT, GL_FALSE, sizeof(TexturedVertex), BUFFER_OFFSET(2*sizeof(glm::vec3))));
+    glAssert(glEnableVertexAttribArray(2));
+}
diff --git a/standardmesh.h b/standardmesh.h
new file mode 100644
index 0000000..4ac7998
--- /dev/null
+++ b/standardmesh.h
@@ -0,0 +1,34 @@
+#ifndef STANDARDMESH_H
+#define STANDARDMESH_H
+
+#include "vertex.h"
+#include "mesh.h"
+
+class StandardMesh : public Mesh{
+protected:
+    std::vector<TexturedVertex> vertices;
+
+    virtual int getNbVertices()
+    {
+        return vertices.size();
+    }
+
+    virtual int getSizeofVertexType()
+    {
+        return sizeof(TexturedVertex);
+    }
+
+    virtual void* getVertexData()
+    {
+        return (void*)(vertices.data());
+    }
+
+    virtual void setAttribPointer();
+
+public:
+
+    void addVertex(const TexturedVertex& v);
+
+};
+
+#endif // STANDARDMESH_H
diff --git a/utils.cpp b/utils.cpp
index 210b780..a4fed29 100644
--- a/utils.cpp
+++ b/utils.cpp
@@ -1,5 +1,5 @@
 #include "utils.h"
-#include "mesh.h"
+#include "standardmesh.h"
 #include <QFile>
 #include <QTextStream>
 #include <QImage>
@@ -90,16 +90,16 @@ void Utils::loadMTL(const std::string &filename)
 
 }
 
-Mesh* Utils::loadOBJ(const std::string &filename)
+StandardMesh* Utils::loadOBJ(const std::string &filename)
 {
-    Mesh* mesh = new Mesh();
+    StandardMesh* mesh = new StandardMesh();
     std::vector<glm::vec3> pos;
     std::vector<glm::vec3> norm;
     std::vector<glm::vec2> tex;
     QString line;
     QStringList list;
     QStringList faceList;
-    Mesh::Vertex v;
+    TexturedVertex v;
     int nb_vertices = 0;
     QFile f(QString(filename.c_str()));
     if(!f.open(QFile::ReadOnly | QFile::Text))
diff --git a/utils.h b/utils.h
index 4a27b78..0bee9e0 100644
--- a/utils.h
+++ b/utils.h
@@ -3,13 +3,13 @@
 
 #include <string>
 class QImage;
-class Mesh;
+class StandardMesh;
 
 class Utils
 {
 public:
     static std::string fileToString(const std::string &filename);
-    static Mesh* loadOBJ(const std::string &filename);
+    static StandardMesh* loadOBJ(const std::string &filename);
     //static void loadOBJ(const std::string &filename);
     static void loadMTL(const std::string &filename);
     class Image
diff --git a/vertex.h b/vertex.h
new file mode 100644
index 0000000..b63fd7a
--- /dev/null
+++ b/vertex.h
@@ -0,0 +1,29 @@
+#ifndef VERTEX_H
+#define VERTEX_H
+
+#include "glm/vec3.hpp"
+#include "glm/vec2.hpp"
+
+struct Vertex
+{
+    glm::vec3 position;
+};
+
+struct BasicVertex : public Vertex
+{
+    glm::vec3 normal;
+};
+
+struct TexturedVertex : public BasicVertex
+{
+    glm::vec2 texCoord;
+};
+
+struct SRFVertex : public TexturedVertex
+{
+    glm::vec3 tangent;
+    glm::vec3 bitangent;
+};
+
+#endif // VERTEX_H
+