private static void Window_Load(object sender, EventArgs e)
{
// ### Basic Initialisations
Console.WriteLine("Loaded Window");
GL.ClearColor(0.0f, 0.0f, 0.0f, 0.0f);
GL.Enable(EnableCap.DepthTest);
// ### Create Viewport and Perspective
GL.Viewport(0, 0, WIDTH, HEIGHT);
GL.MatrixMode(MatrixMode.Projection);
GL.LoadIdentity();
Matrix4 m4 = Matrix4.CreatePerspectiveFieldOfView((float)Math.PI / 4, (float)WIDTH / HEIGHT, 1.0f, 1000.0f); //The (float) is very important!!!
GL.LoadMatrix(ref m4);
GL.MatrixMode(MatrixMode.Modelview);
// ### Lighting
//GL.Enable(EnableCap.Lighting);
//GL.Light(LightName.Light0, LightParameter.Position, new Vector4(0.0f, 4.0f, -2f, 1));
//GL.Light(LightName.Light0, LightParameter.SpotExponent, 0.01f);
//GL.Enable(EnableCap.Light0);
// ### Load OBJ
fileStream = new FileStream("ViolettBerry05.obj", FileMode.Open);
objResult = ObjLoaderController.Load(fileStream);
fileStream.Close();
allVertices = objResult.GetVertices();
allNormals = objResult.GetNormals();
allTextureCoords = objResult.GetTextureCoords();
Console.WriteLine("Count of Faces: " + objResult.faces.Length);
Console.WriteLine("Count of Face-Vertices: " + allVertices.Length);
Console.WriteLine("Count of Face-Normals: " + allNormals.Length);
Console.WriteLine("Count of Face-TextureCoords: " + allNormals.Length);
GL.EnableClientState(ArrayCap.VertexArray);
//Set up Vertex-Array-Object (VAO)
VAO = GL.GenVertexArray();
GL.BindVertexArray(VAO);
//Set up Vertex Buffer (Position Buffer)
VBO = GL.GenBuffer();
GL.BindBuffer(BufferTarget.ArrayBuffer, VBO);
GL.BufferData(BufferTarget.ArrayBuffer, (IntPtr)(Marshal.SizeOf <float>() * allVertices.Length), allVertices, BufferUsageHint.StaticDraw);
//Add to VAO
GL.EnableVertexAttribArray(0);
GL.VertexAttribPointer(0, 3, VertexAttribPointerType.Float, false, 0, 0);
//Set up Normal Buffer
normalBuffer = GL.GenBuffer();
GL.BindBuffer(BufferTarget.ArrayBuffer, normalBuffer);
GL.BufferData(BufferTarget.ArrayBuffer, (IntPtr)(Marshal.SizeOf <float>() * allNormals.Length), allNormals, BufferUsageHint.StaticDraw);
//Add to VAO
GL.EnableVertexAttribArray(1);
GL.VertexAttribPointer(1, 3, VertexAttribPointerType.Float, false, 0, 0);
//Set up Texture Buffer
normalBuffer = GL.GenBuffer();
GL.BindBuffer(BufferTarget.ArrayBuffer, normalBuffer);
GL.BufferData(BufferTarget.ArrayBuffer, (IntPtr)(Marshal.SizeOf <float>() * allNormals.Length), allNormals, BufferUsageHint.StaticDraw);
//Add to VAO
GL.EnableVertexAttribArray(2);
GL.VertexAttribPointer(2, 2, VertexAttribPointerType.Float, false, 0, 0);
GL.BindVertexArray(0); //Damit sichern wir, dass sich nachfolgende Aufrufe von glVertexAttribPointer oder glBindBuffer nicht auf unser VAO auswirken.
//...
}