protected override void OnLoad()
{
GL.ClearColor(1f, 1f, 1f, 1.0f);
VertexBufferObject = GL.GenBuffer();
GL.BindBuffer(BufferTarget.ArrayBuffer, VertexBufferObject);
GL.BufferData(BufferTarget.ArrayBuffer, vertices.Length * sizeof(float), vertices, BufferUsageHint.StaticDraw);
VertexArrayObject = GL.GenVertexArray();
GL.BindVertexArray(VertexArrayObject);
GL.BindBuffer(BufferTarget.ArrayBuffer, VertexArrayObject);
GL.BufferData(BufferTarget.ArrayBuffer, vertices.Length * sizeof(float), vertices, BufferUsageHint.StaticDraw);
ElementBufferObject = GL.GenBuffer();
GL.BindBuffer(BufferTarget.ElementArrayBuffer, ElementBufferObject);
GL.BufferData(BufferTarget.ElementArrayBuffer, indices.Length * sizeof(uint), indices, BufferUsageHint.StaticDraw);
GL.VertexAttribPointer(0, 3, VertexAttribPointerType.Float, false, 3 * sizeof(float), 0);
GL.EnableVertexAttribArray(0);
Shader = new Shader(
Path.GetFullPath(Path.Combine(AppDomain.CurrentDomain.BaseDirectory, @"shaders\shader.vert.glsl")),
Path.GetFullPath(Path.Combine(AppDomain.CurrentDomain.BaseDirectory, @"shaders\shader.frag.glsl")));
Shader.Use();
_timer = new Stopwatch();
_timer.Start();
base.OnLoad();
}
private static int createVAO()
{
int vaoID = GL.GenVertexArray();
VAOs.Add(vaoID);
GL.BindVertexArray(vaoID);
return(vaoID);
}
protected override void OnUnload()
{
GL.BindBuffer(BufferTarget.ArrayBuffer, 0);
GL.BindVertexArray(0);
GL.UseProgram(0);
// Delete all the resources.
GL.DeleteBuffer(VertexBufferObject);
GL.DeleteVertexArray(VertexArrayObject);
GL.DeleteProgram(Shader.Handle);
base.OnUnload();
}
protected override void OnRenderFrame(FrameEventArgs args)
{
GL.Clear(ClearBufferMask.ColorBufferBit);
Shader.Use();
#region Coloring
var timeValue = _timer.Elapsed.TotalSeconds;
GetColor(ref _greenValue, ref _redValue, ref _blueValue, ref timeValue);
var vertexColorLocation = GL.GetUniformLocation(Shader.Handle, "ourColor");
GL.Uniform4(vertexColorLocation, _redValue, _greenValue, _blueValue, 1.0f);
#endregion
GL.BindVertexArray(VertexArrayObject);
GL.DrawArrays(PrimitiveType.Triangles, 0, 3);
SwapBuffers();
base.OnRenderFrame(args);
}
public void Use()
{
GL.BindVertexArray(vertexArrayObject);
}
private static void unbindVAO()
{
GL.BindVertexArray(0);
}