diff --git a/src/engine/Engine.java b/src/engine/Engine.java
index 8eba812..667430d 100644
--- a/src/engine/Engine.java
+++ b/src/engine/Engine.java
@@ -1,10 +1,10 @@
 /**
  * CLASS ENGINE
- * 
+ *
  * Classe principale du moteur de jeu
- * 
+ *
  * @author François Autin
- * 
+ *
  */
 package engine;
 
@@ -14,7 +14,6 @@ import org.lwjgl.opengl.GL;
 
 import static org.lwjgl.glfw.GLFW.*;
 import static org.lwjgl.opengl.GL11.*;
-import static org.lwjgl.opengl.GL13.*;
 import static org.lwjgl.system.MemoryUtil.*;
 
 public class Engine {
@@ -52,6 +51,7 @@ public class Engine {
         glfwSetWindowPos(this.window, (vidmode.width() - width)/2, (vidmode.height() - height)/2);
 
         glfwSetKeyCallback(window, new Input());
+        glfwSetInputMode(window, GLFW_STICKY_KEYS, GLFW_TRUE);
 
         // Contexte = zone cible des rendus
         glfwMakeContextCurrent(this.window);
@@ -63,18 +63,10 @@ public class Engine {
         glClearColor(0.0f, 0.0f, 0.0f, 1.0f);
         System.out.println("OpenGL: " + glGetString(GL_VERSION));
 
-        this.scene = new Scene("shaders/vert.vert", "shaders/frag.frag", Primitive.triangle);
+        this.scene = new Scene("shaders/vert.vert", "shaders/frag.frag", Primitive.rectangle, Primitive.rectangle_indices);
 
     }
 
-    /*
-    TODO gérer les input dans une autre classe
-     */
-    private void processInput(){
-        if(glfwGetKey(this.window, GLFW_KEY_ESCAPE) == GLFW_PRESS)
-            glfwSetWindowShouldClose(this.window, true);
-    }
-
     private void update(){
         glfwPollEvents();
     }
@@ -91,7 +83,6 @@ public class Engine {
     public void run(){
     init();
     while(running){
-        processInput();
         update();
         render();
         if(glfwWindowShouldClose(window)) running = false;
@@ -102,7 +93,7 @@ public class Engine {
     Est appelé à chaque modification de la taille de la fenêtre, et modifie la taille de la zone de rendu
     pour quelle corresponde à la taille de la fenêtre
      */
-    private static GLFWFramebufferSizeCallback resizeWindow = new GLFWFramebufferSizeCallback(){
+    private static final GLFWFramebufferSizeCallback resizeWindow = new GLFWFramebufferSizeCallback(){
         @Override
         public void invoke(long window, int width, int height){
             glViewport(0,0,width,height);
diff --git a/src/engine/Input.java b/src/engine/Input.java
index c5b1e4e..d93f485 100644
--- a/src/engine/Input.java
+++ b/src/engine/Input.java
@@ -3,6 +3,9 @@ package engine;
 import org.lwjgl.glfw.GLFW;
 import org.lwjgl.glfw.GLFWKeyCallback;
 
+import static org.lwjgl.glfw.GLFW.*;
+import static org.lwjgl.opengl.GL11.*;
+
 public class Input extends GLFWKeyCallback {
 
     public static boolean[] keys = new boolean[65536];
@@ -10,5 +13,10 @@ public class Input extends GLFWKeyCallback {
     @Override
     public void invoke(long window, int key, int scancode, int action, int mods) {
         keys[key] = action != GLFW.GLFW_RELEASE;
+        if(key == GLFW_KEY_ESCAPE && action == GLFW_PRESS)
+            glfwSetWindowShouldClose(window, true);
+        else if(key == GLFW_KEY_SPACE && action == GLFW_PRESS) //Switch to wireframe
+            if (glGetInteger(GL_POLYGON_MODE) == GL_FILL) glPolygonMode(GL_FRONT_AND_BACK, GL_LINE);
+            else glPolygonMode(GL_FRONT_AND_BACK, GL_FILL);
     }
 }
diff --git a/src/engine/Primitive.java b/src/engine/Primitive.java
index 887595e..34e1903 100644
--- a/src/engine/Primitive.java
+++ b/src/engine/Primitive.java
@@ -8,4 +8,20 @@ public class Primitive {
         -0.5f,  -0.5f, 0.0f,
     };
 
+    public static byte[] triangle_indices = new byte[]{
+        0, 1, 2
+    };
+
+    public static float[] rectangle = new float[] {
+             0.5f,  0.5f, 0.0f,  // top right
+             0.5f, -0.5f, 0.0f,  // bottom right
+            -0.5f, -0.5f, 0.0f,  // bottom left
+            -0.5f,  0.5f, 0.0f   // top left
+    };
+
+    public static byte[] rectangle_indices = new byte[] {
+            0, 1, 3,
+            1, 2, 3
+    };
+
 }
diff --git a/src/engine/Scene.java b/src/engine/Scene.java
index 301c470..3edf273 100644
--- a/src/engine/Scene.java
+++ b/src/engine/Scene.java
@@ -3,14 +3,16 @@ package engine;
 public class Scene {
 
     float[] vertices;
+    byte[] indices;
 
     VertexArray vertexArray;
     Shader shader;
 
-    public Scene(String vertPath, String fragPath, float[] vertices){
+    public Scene(String vertPath, String fragPath, float[] vertices, byte[] indices){
         this.vertices = vertices;
+        this.indices = indices;
         this.shader = new Shader(vertPath, fragPath);
-        this.vertexArray = new VertexArray(this.vertices);
+        this.vertexArray = new VertexArray(this.vertices, this.indices);
     }
 
     public void render(){
diff --git a/src/engine/VertexArray.java b/src/engine/VertexArray.java
index e7c64aa..d14daaf 100644
--- a/src/engine/VertexArray.java
+++ b/src/engine/VertexArray.java
@@ -6,22 +6,26 @@ import static org.lwjgl.opengl.GL30.*;
 
 public class VertexArray {
 
-    private int VAO ,VBO;
+    private int VAO ,VBO, EBO;
+    private int count;
 
-    public VertexArray(float[] vertices){
+    public VertexArray(float[] vertices, byte[] indices){
+        count = indices.length;
         // VERTEX ARRAY OBJECT
         VAO = glGenVertexArrays();
+        glBindVertexArray(VAO);
 
         // VERTEX BUFFER OBJECT
         VBO = glGenBuffers();
-        glBindVertexArray(VAO);
-
         glBindBuffer(GL_ARRAY_BUFFER, VBO);
         glBufferData(GL_ARRAY_BUFFER, BufferUtils.createFloatBuffer(vertices), GL_STATIC_DRAW);
-
         glVertexAttribPointer(0, 3, GL_FLOAT, false, 0, 0);
         glEnableVertexAttribArray(0);
 
+        EBO = glGenBuffers();
+        glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, EBO);
+        glBufferData(GL_ELEMENT_ARRAY_BUFFER, BufferUtils.createByteBuffer(indices), GL_STATIC_DRAW);
+
         glBindBuffer(GL_ARRAY_BUFFER, 0);
         glBindVertexArray(0);
 
@@ -36,7 +40,7 @@ public class VertexArray {
     }
 
     public void draw(){
-        glDrawArrays(GL_TRIANGLES, 0, 3);
+        glDrawElements(GL_TRIANGLES, count, GL_UNSIGNED_BYTE, 0);
     }
 
     public void render(){