protected override void OnLoad(EventArgs e)
{
base.OnLoad (e);
String version = GL.GetString(StringName.Version);
Console.WriteLine("GL version: " + version);
context = GLGraphics.NewContext(Context, true);
program = context.NewProgramFromFiles("Render.vert", "Render.frag");
texture0 = context.NewTexture(TextureMinFilter.Nearest, TextureMagFilter.Nearest, TextureWrapMode.Clamp, TextureWrapMode.Clamp);
texture0.UploadImage(sourceImage);
sourceImage.Dispose();
texture1 = context.NewTexture(TextureMinFilter.Nearest, TextureMagFilter.Nearest, TextureWrapMode.Clamp, TextureWrapMode.Clamp);
texture1.UploadImage(new byte[4 * 4 * 4], 4, 4, PixelInternalFormat.Four, PixelFormat.Rgba, PixelType.UnsignedByte);
CreateAndFillBuffers();
paramSpec = ImmutableList<Tuple<String, Object>>.List(new Tuple<String, Object>[] {
Tuple.Create<String, Object>("a_position", positions),
Tuple.Create<String, Object>("a_texPos", textureCoords),
Tuple.Create<String, Object>("u_texture0", texture0),
Tuple.Create<String, Object>("u_texture1", texture1)});
}