protected override void OnLoad(EventArgs e)
{
// Create and fill a vertex buffer
this.vertexBuffer = new VertexBuffer<ColoredVertex>(ColoredVertex.Size);
this.vertexBuffer.AddVertex(new ColoredVertex(new Vector3(-1, -1, -1.5f), Color4.Lime));
this.vertexBuffer.AddVertex(new ColoredVertex(new Vector3(1, 1, -1.5f), Color4.Red));
this.vertexBuffer.AddVertex(new ColoredVertex(new Vector3(1, -1, -1.5f), Color4.Blue));
// Load shaders
string fscode, vscode;
var assembly = Assembly.GetExecutingAssembly();
var fsresourceName = "VoxWorld.Shaders.fragment-shader.fs";
var vsresourceName = "VoxWorld.Shaders.vertex-shader.vs";
using (Stream stream = assembly.GetManifestResourceStream(fsresourceName))
using (StreamReader reader = new StreamReader(stream))
fscode = reader.ReadToEnd();
using (Stream stream = assembly.GetManifestResourceStream(vsresourceName))
using (StreamReader reader = new StreamReader(stream))
vscode = reader.ReadToEnd();
var vertexShader = new Shader(ShaderType.VertexShader, vscode);
var fragmentShader = new Shader(ShaderType.FragmentShader, fscode);
// Link shaders into shader program
this.shaderProgram = new ShaderProgram(vertexShader, fragmentShader);
// Create vertex array to specify vertex layout
this.vertexArray = new VertexArray<ColoredVertex>(
this.vertexBuffer, this.shaderProgram,
new VertexAttribute("vPosition", 3, VertexAttribPointerType.Float, ColoredVertex.Size, 0),
new VertexAttribute("vColor", 4, VertexAttribPointerType.Float, ColoredVertex.Size, 12)
);
// Create projection matrix uniform
this.projectionMatrix = new Matrix4Uniform("projectionMatrix");
this.projectionMatrix.Matrix = Matrix4.CreatePerspectiveFieldOfView(
MathHelper.PiOver2, 16f / 9, 0.1f, 100f);
}
public void Set(ShaderProgram Program)
{
// Get uniform location
var i = Program.GetUniformLocation(this.name);
// Set uniform value
GL.UniformMatrix4(i, false, ref this.matrix);
}
