Initial commit

C#/OpenTKTutorial/Game.cs

@@ -0,0 +1,73 @@
+using System.Collections.Generic;
+using OpenTK.Graphics.ES30;
+using OpenTK.Mathematics;
+using OpenTK.Windowing.Common;
+using OpenTK.Windowing.Desktop;
+using OpenTK.Windowing.GraphicsLibraryFramework;
+using SixLabors.ImageSharp;
+using SixLabors.ImageSharp.PixelFormats;
+using SixLabors.ImageSharp.Processing;
+using Image = SixLabors.ImageSharp.Image;
+
+namespace OpenTKTutorial {
+    public class Game : GameWindow {
+        private int _vbo;
+        private int _vao;
+        private Shader _shader;
+        
+        public Game(int width, int height, string title) : base(GameWindowSettings.Default, new NativeWindowSettings {Title = title, Size = new Vector2i(width, height)}) { }
+
+        protected override void OnUpdateFrame(FrameEventArgs args) {
+            if (KeyboardState.IsKeyDown(Keys.Escape)) Close();
+            
+            base.OnUpdateFrame(args);
+        }
+
+        protected override void OnLoad() {
+            GL.ClearColor(0.0f, 0.0f, 0.0f, 1.0f);
+            _shader = new Shader(@"D:\Programmierstuff\C#\OpenTKTutorial\shader.vert", @"D:\Programmierstuff\C#\OpenTKTutorial\shader.frag");
+
+            float[] vertices = {
+                -0.5f, -0.5f, 1.0f, 0.0f, 0.0f, //Bottom-left vertex
+                0.5f, -0.5f, 0.0f, 1.0f, 0.0f,  //Bottom-right vertex
+                0.0f,  0.5f, 0.0f, 0.0f, 1.0f   //Top vertex
+            };
+            _vbo = GL.GenBuffer();
+
+            _vao = GL.GenVertexArray();
+            GL.BindVertexArray(_vao);
+            GL.BindBuffer(BufferTarget.ArrayBuffer, _vbo);
+            GL.BufferData(BufferTarget.ArrayBuffer, vertices.Length * sizeof(float), vertices, BufferUsageHint.StaticDraw);
+            
+            GL.VertexAttribPointer(0, 3, VertexAttribPointerType.Float, false, 5 * sizeof(float), 0);
+            GL.EnableVertexAttribArray(0);
+            GL.VertexAttribPointer(1, 3, VertexAttribPointerType.Float, false, 5 * sizeof(float), 2 * sizeof(float));
+            GL.EnableVertexAttribArray(1);
+
+            base.OnLoad();
+        }
+
+        protected override void OnUnload() {
+            GL.BindBuffer(BufferTarget.ArrayBuffer, 0);
+            GL.DeleteBuffer(_vbo);
+            _shader.Dispose();
+            base.OnUnload();
+        }
+
+        protected override void OnRenderFrame(FrameEventArgs args) {
+            GL.Clear(ClearBufferMask.ColorBufferBit);
+            
+            _shader.Use();
+            GL.BindVertexArray(_vao);
+            GL.DrawArrays(PrimitiveType.Triangles, 0, 3);
+            
+            Context.SwapBuffers();
+            base.OnRenderFrame(args);
+        }
+
+        protected override void OnResize(ResizeEventArgs e) {
+            GL.Viewport(0, 0, e.Width, e.Height);
+            base.OnResize(e);
+        }
+    }
+}