Add project files.

Triangle.cs

@@ -0,0 +1,48 @@
+using OpenTK.Graphics.OpenGL4;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace Voxel
+{
+
+    public class Triangle
+    {
+        private int _vao;
+        private Shader _shader;
+
+        public Triangle()
+        {
+            string vertexPath = "Shaders/shader.vert";
+            string fragmentPath = "Shaders/shader.frag";
+            _shader = new Shader(vertexPath, fragmentPath);
+
+            float[] vertices =
+            {
+                -0.5f, -0.5f, 0.0f, //top
+                0.5f, -0.5f, 0.0f, // bottom right
+                0.0f, 0.5f, 0.0f // bottom left
+            };
+
+            _vao = GL.GenVertexArray();
+            GL.BindVertexArray(_vao);
+
+            int vbo = GL.GenBuffer();
+            GL.BindBuffer(BufferTarget.ArrayBuffer, vbo);
+            GL.BufferData(BufferTarget.ArrayBuffer, vertices.Length * sizeof(float), vertices, BufferUsageHint.StaticDraw);
+
+            GL.VertexAttribPointer(0, 3, VertexAttribPointerType.Float, false, 3 * sizeof(float), 0);
+            GL.EnableVertexAttribArray(0);
+
+            _shader.Use();
+        }
+
+        public void Draw()
+        {
+            GL.BindVertexArray(_vao);
+            GL.DrawArrays(PrimitiveType.Triangles, 0, 3);
+        }
+    }
+}