20.09.2020

+ Instance Drawing
+ Text and Font

~ Made "DrawBackground" forced Background for 2D

- DrawEmpty

SMCode/SM.Base/Drawing/DrawingBasis.cs

@@ -4,7 +4,7 @@ using SM.OGL.Mesh;
 
 namespace SM.Base.Scene
 {
-    public class DrawingBasis : IShowItem
+    public abstract class DrawingBasis : IShowItem
     {
         protected Material _material = new Material();
         protected Mesh _mesh = Plate.Object;
@@ -22,10 +22,9 @@ namespace SM.Base.Scene
             context.Mesh = _mesh;
         }
     }
-    public class DrawingBasis<TTransformation> : DrawingBasis
+    public abstract class DrawingBasis<TTransformation> : DrawingBasis
         where TTransformation : GenericTransformation, new()
     {
-
         public TTransformation Transform = new TTransformation();
     }
 }

SMCode/SM.Base/Drawing/IShader.cs

@@ -7,6 +7,5 @@ namespace SM.Base.Scene
     public interface IShader
     {
         void Draw(DrawContext context);
-        void DrawInstanced(DrawContext context, ICollection<Matrix4> instanceCollection);
     }
 }

SMCode/SM.Base/Drawing/Instance.cs

@@ -0,0 +1,11 @@
+using OpenTK;
+
+namespace SM.Base.Scene
+{
+    public struct Instance
+    {
+        public Matrix4 ModelMatrix;
+        public Vector2 TexturePosition;
+        public Vector2 TextureScale;
+    }
+}

SMCode/SM.Base/Drawing/Material.cs

@@ -7,7 +7,7 @@ namespace SM.Base.Scene
     public class Material
     {
         public TextureBase Texture;
-        public Color4 Tint;
+        public Color4 Tint = Color4.White;
 
         public IShader Shader = Shaders.Default;
     }

SMCode/SM.Base/SM.Base.csproj

@@ -47,13 +47,19 @@
   <ItemGroup>
     <Compile Include="Drawing\DrawingBasis.cs" />
     <Compile Include="Drawing\GenericTransformation.cs" />
+    <Compile Include="Drawing\Instance.cs" />
     <Compile Include="Drawing\IShader.cs" />
-    <Compile Include="Drawing\IShowCollection.cs" />
-    <Compile Include="Drawing\IShowItem.cs" />
+    <Compile Include="Scene\IShowCollection.cs" />
+    <Compile Include="Scene\IShowItem.cs" />
     <Compile Include="Drawing\Material.cs" />
+    <Compile Include="Scene\IBackgroundItem.cs" />
     <Compile Include="Shader\InstanceShader.cs" />
     <Compile Include="Shader\Shaders.cs" />
     <Compile Include="Textures\Texture.cs" />
+    <Compile Include="Text\CharParameter.cs" />
+    <Compile Include="Text\Font.cs" />
+    <Compile Include="Text\FontCharStorage.cs" />
+    <Compile Include="Text\TextDrawingBasis.cs" />
     <Compile Include="Types\Vector.cs" />
     <Compile Include="Types\Vector2.cs" />
     <Compile Include="Types\Vector3.cs" />

SMCode/SM.Base/Scene/GenericScene.cs

@@ -8,7 +8,7 @@ namespace SM.Base.Scene
         where TCamera : GenericCamera, new()
     {
 
-        public IShowItem Background;
+        protected IBackgroundItem _background;
         public List<IShowItem> HUD { get; } = new List<IShowItem>();
         public List<IShowItem> Objects { get; } = new List<IShowItem>();
         public TCamera Camera { get; set; }
@@ -21,7 +21,7 @@ namespace SM.Base.Scene
 
             DrawContext backgroundDrawContext = context;
             backgroundDrawContext.View = BackgroundCamera.CalculateViewMatrix();
-            Background?.Draw(backgroundDrawContext);
+            _background?.Draw(backgroundDrawContext);
 
             for(int i = 0; i < Objects.Count; i++)
                 Objects[i].Draw(context);

SMCode/SM.Base/Scene/IBackgroundItem.cs

@@ -0,0 +1,7 @@
+namespace SM.Base.Scene
+{
+    public interface IBackgroundItem : IShowItem
+    {
+        
+    }
+}

SMCode/SM.Base/Shader/Files/default.vert

@@ -1,14 +1,17 @@
 #version 330
+#define maxInstances 32
 layout(location = 0) in vec3 aPos;
 layout(location = 1) in vec2 aTex;
 
 uniform mat4 MVP;
-uniform mat4 ModelMatrix;
+uniform mat4 ModelMatrix[maxInstances];
+uniform vec2 TextureOffset[maxInstances];
+uniform vec2 TextureScale[maxInstances];
 
 out vec2 vTexture;
 
 void main() {
-    vTexture = aTex;
+    vTexture = aTex * TextureScale[gl_InstanceID] + TextureOffset[gl_InstanceID];
 
-    gl_Position = MVP * ModelMatrix * vec4(aPos, 1);
+    gl_Position = MVP * ModelMatrix[gl_InstanceID] * vec4(aPos, 1);
 }

SMCode/SM.Base/Shader/InstanceShader.cs

@@ -13,26 +13,25 @@ namespace SM.Base.Shader
     {
         protected override bool AutoCompile { get; } = true;
 
-        public Action<UniformCollection, DrawContext> SetUniform;
+        public Action<UniformCollection, DrawContext, int> SetUniformVertex;
+        public Action<UniformCollection, DrawContext> SetUniformFragment;
 
-        public InstanceShader(string vertex, string fragment, Action<UniformCollection, DrawContext> setUniform) : base(new ShaderFileCollection(vertex, fragment))
+        public InstanceShader(string vertex, string fragment) : base(new ShaderFileCollection(vertex, fragment))
         {
-            SetUniform = setUniform;
         }
         public void Draw(DrawContext context)
         {
             GL.UseProgram(this);
 
-            SetUniform.Invoke(Uniforms, context);
+            Uniforms["MVP"].SetMatrix4(context.View * context.World);
 
-            DrawObject(context.Mesh, true);
+            for (int i = 0; i < context.Instances.Length; i++) SetUniformVertex?.Invoke(Uniforms, context, i);
+            
+            SetUniformFragment?.Invoke(Uniforms, context);
+
+            DrawObject(context.Mesh, context.Instances.Length, true);
 
             GL.UseProgram(0);
         }
-
-        public void DrawInstanced(DrawContext context, ICollection<Matrix4> instanceCollection)
-        {
-            throw new NotImplementedException();
-        }
     }
 }

SMCode/SM.Base/Shader/Shaders.cs

@@ -1,5 +1,6 @@
 using System.IO;
 using System.Reflection;
+using OpenTK.Graphics.OpenGL4;
 using SM.OGL.Shaders;
 
 namespace SM.Base.Shader
@@ -7,13 +8,20 @@ namespace SM.Base.Shader
     public class Shaders
     {
         public static InstanceShader Default = new InstanceShader(new StreamReader(Assembly.GetExecutingAssembly().GetManifestResourceStream("SM.Base.Shader.Files.default.vert")).ReadToEnd(),
-            new StreamReader(Assembly.GetExecutingAssembly().GetManifestResourceStream("SM.Base.Shader.Files.default.frag")).ReadToEnd(),
-            ((u, context) =>
+            new StreamReader(Assembly.GetExecutingAssembly().GetManifestResourceStream("SM.Base.Shader.Files.default.frag")).ReadToEnd())
+        {
+
+            SetUniformFragment = (u, context) =>
             {
-                u["MVP"].SetMatrix4(context.View * context.World);
-                u["ModelMatrix"].SetMatrix4(context.ModelMatrix);
                 u["Tint"].SetUniform4(context.Material.Tint);
                 u["Texture"].SetTexture(context.Material.Texture, 0, u["UseTexture"]);
-            }));
+            },
+            SetUniformVertex = (u, context, i) =>
+            {
+                GL.UniformMatrix4(u["ModelMatrix"] + i, false, ref context.Instances[i].ModelMatrix);
+                GL.Uniform2(u["TextureOffset"] + i, context.Instances[i].TexturePosition);
+                GL.Uniform2(u["TextureScale"] + i, context.Instances[i].TextureScale);
+            }
+        };
     }
 }

SMCode/SM.Base/Text/CharParameter.cs

@@ -0,0 +1,16 @@
+using System;
+using System.Configuration.Assemblies;
+using OpenTK;
+
+namespace SM.Data.Fonts
+{
+    [Serializable]
+    public class CharParameter
+    {
+        public int X;
+        public float Width;
+
+        public float RelativeX;
+        public float RelativeWidth;
+    }
+}

SMCode/SM.Base/Text/Font.cs

@@ -0,0 +1,95 @@
+using System.Collections.Generic;
+using System.Drawing;
+using System.Drawing.Text;
+using System.Security.Policy;
+using OpenTK;
+using OpenTK.Graphics.OpenGL4;
+using OpenTK.Input;
+using SM.Data.Fonts;
+using SM.OGL.Texture;
+
+namespace SM.Base.Text
+{
+    public class Font : TextureBase
+    {
+        public  Dictionary<char, CharParameter> Positions = new Dictionary<char, CharParameter>();
+
+        public override TextureMinFilter Filter { get; set; } = TextureMinFilter.Linear;
+        public override TextureWrapMode WrapMode { get; set; } = TextureWrapMode.ClampToEdge;
+
+        public FontFamily FontFamily;
+
+        public FontStyle FontStyle = FontStyle.Regular;
+        public float FontSize = 12;
+        public ICollection<char> CharSet = FontCharStorage.SimpleUTF8;
+
+        public int Width { get; private set; }
+        public int Height { get; private set; }
+        public Bitmap Texture { get; private set; }
+
+        public Font(string path)
+        {
+            PrivateFontCollection pfc = new PrivateFontCollection();
+            pfc.AddFontFile(path);
+            FontFamily = pfc.Families[0];
+        }
+
+        public Font(FontFamily font)
+        {
+            FontFamily = font;
+        }
+
+        public void RegenerateTexture()
+        {
+            Bitmap map = new Bitmap(1000,20);
+            Width = 0;
+            Height = 0;
+            using (System.Drawing.Font f = new System.Drawing.Font(FontFamily, FontSize, FontStyle))
+            {
+                using (Graphics g = Graphics.FromImage(map))
+                {
+                    g.Clear(Color.Transparent);
+
+                    foreach (char c in CharSet)
+                    {
+                        string s = c.ToString();
+                        SizeF size = g.MeasureString(s, f);
+                        try
+                        {
+                            Positions.Add(c, new CharParameter() { Width = size.Width, X = Width });
+                        }
+                        catch
+                        {
+                            // ignored
+                        }
+
+                        if (Height < size.Height) Height = (int)size.Height;
+                        Width += (int)size.Width;
+                    }
+                }
+
+                map = new Bitmap(Width, Height);
+                using (Graphics g = Graphics.FromImage(map))
+                {
+                    foreach (KeyValuePair<char, CharParameter> keyValuePair in Positions)
+                    {
+                        keyValuePair.Value.RelativeX = (keyValuePair.Value.X + 0.00001f) / Width;
+                        keyValuePair.Value.RelativeWidth = (keyValuePair.Value.Width) / Width;
+
+                        g.DrawString(keyValuePair.Key.ToString(), f, Brushes.White, keyValuePair.Value.X, 0);
+                    }
+                }
+            }
+
+            Texture = map;
+
+            _id = SM.Base.Textures.Texture.GenerateTexture(map, Filter, WrapMode);
+        }
+
+        protected override void Compile()
+        {
+            base.Compile();
+            RegenerateTexture();
+        }
+    }
+}

SMCode/SM.Base/Text/FontCharStorage.cs

@@ -0,0 +1,14 @@
+namespace SM.Data.Fonts
+{
+    public class FontCharStorage
+    {
+        public static readonly char[] SimpleUTF8 = new char[]
+        {
+            '!', '"', '#', '$', '%', '&', '\'', '(', ')', '*', '+', ',', '-', '.', '/', '0', '1', '2', '3', '4', '5', '6',
+            '7', '8', '9', ':', ';', '<', '=', '>', '?', '@', 'A', 'B', 'C', 'D', 'E', 'F', 'G', 'H', 'I', 'J', 'K',
+            'L', 'M', 'N', 'O', 'P', 'Q', 'R', 'S', 'T', 'U', 'V', 'W', 'X', 'Y', 'Z', '[', '\\', ']', '^', '_', '`',
+            'a', 'b', 'c', 'd', 'e', 'f', 'g', 'h', 'i', 'j', 'k', 'l', 'm', 'n', 'o', 'p', 'q', 'r', 's', 't', 'u',
+            'v', 'w', 'x', 'y', 'z', '{', '|', '}', '~'
+        };
+    }
+}

SMCode/SM.Base/Text/TextDrawingBasis.cs

@@ -0,0 +1,83 @@
+using System;
+using OpenTK;
+using OpenTK.Graphics;
+using SM.Base.Contexts;
+using SM.Base.Scene;
+using SM.Data.Fonts;
+
+namespace SM.Base.Text
+{
+    public abstract class TextDrawingBasis<TTransform> : DrawingBasis<TTransform>
+        where TTransform : GenericTransformation, new()
+    {
+        protected Instance[] _modelMatrixs;
+        protected string _text;
+
+        public Font Font
+        {
+            get => (Font) _material.Texture;
+            set
+            {
+                _material.Texture = value;
+                GenerateMatrixes();
+            }
+        }
+
+        public string Text
+        {
+            get => _text;
+            set
+            {
+                _text = value;
+                GenerateMatrixes();
+            }
+        }
+
+        public Color4 Color
+        {
+            get => _material.Tint;
+            set => _material.Tint = value;
+        }
+
+        protected TextDrawingBasis(Font font)
+        {
+            _material.Texture = font;
+        }
+
+        public override void Draw(DrawContext context)
+        {
+            base.Draw(context);
+            if (_modelMatrixs == null) GenerateMatrixes();
+        }
+
+        public void GenerateMatrixes()
+        {
+            if (!Font.WasCompiled) Font.RegenerateTexture();
+
+            _modelMatrixs = new Instance[_text.Length];
+
+            float x = 0;
+            for (var i = 0; i < _text.Length; i++)
+            {
+                CharParameter parameter;
+                try
+                {
+                    parameter = Font.Positions[_text[i]];
+                }
+                catch
+                {
+                    throw new Exception("Font doesn't contain '"+_text[i]+"'");
+                }
+
+                Matrix4 matrix = Matrix4.CreateScale(parameter.Width, Font.Height, 1) * Matrix4.CreateTranslation(x, 0, 0);
+                _modelMatrixs[i] = new Instance
+                {
+                    ModelMatrix = matrix,
+                    TexturePosition = new Vector2(parameter.RelativeX, 0),
+                    TextureScale = new Vector2(parameter.RelativeWidth, 1)
+                };
+                x += parameter.Width;
+            }
+        }
+    }
+}

SMCode/SM.Base/Textures/Texture.cs

@@ -9,6 +9,7 @@ namespace SM.Base.Textures
     public class Texture : TextureBase
     {
         public Bitmap Map;
+        public bool AutoDispose = false;
 
         public Texture(Bitmap map) : this(map, TextureMinFilter.Linear, TextureWrapMode.Repeat) {}
 
@@ -23,29 +24,38 @@ namespace SM.Base.Textures
         {
             base.Compile();
 
-            _id = GL.GenTexture();
-            GL.BindTexture(TextureTarget.Texture2D, _id);
+            _id = GenerateTexture(Map, Filter, WrapMode, AutoDispose);
+        }
 
-            BitmapData data = Map.LockBits(new Rectangle(0, 0, Map.Width, Map.Height), ImageLockMode.ReadOnly,
-                Map.PixelFormat);
+        public static int GenerateTexture(Bitmap map, TextureMinFilter filter, TextureWrapMode wrapMode, bool dispose = false)
+        {
+            int id = GL.GenTexture();
+            GL.BindTexture(TextureTarget.Texture2D, id);
 
-            bool transparenz = Map.PixelFormat == PixelFormat.Format32bppArgb;
+            BitmapData data = map.LockBits(new Rectangle(0, 0, map.Width, map.Height), ImageLockMode.ReadOnly,
+                map.PixelFormat);
 
-            GL.TexImage2D(TextureTarget.Texture2D, 0, 
+            bool transparenz = map.PixelFormat == PixelFormat.Format32bppArgb;
+
+            GL.TexImage2D(TextureTarget.Texture2D, 0,
                 transparenz ? PixelInternalFormat.Rgba : PixelInternalFormat.Rgb,
                 data.Width, data.Height, 0,
                 transparenz ? OpenTK.Graphics.OpenGL4.PixelFormat.Bgra : OpenTK.Graphics.OpenGL4.PixelFormat.Bgr,
                 PixelType.UnsignedByte, data.Scan0);
 
-            GL.TexParameter(TextureTarget.Texture2D, TextureParameterName.TextureMinFilter, (int)Filter);
-            GL.TexParameter(TextureTarget.Texture2D, TextureParameterName.TextureMagFilter, (int)Filter);
-            GL.TexParameter(TextureTarget.Texture2D, TextureParameterName.TextureWrapS, (int) WrapMode);
-            GL.TexParameter(TextureTarget.Texture2D, TextureParameterName.TextureWrapT, (int) WrapMode);
+            GL.TexParameter(TextureTarget.Texture2D, TextureParameterName.TextureMinFilter, (int)filter);
+            GL.TexParameter(TextureTarget.Texture2D, TextureParameterName.TextureMagFilter, (int)filter);
+            GL.TexParameter(TextureTarget.Texture2D, TextureParameterName.TextureWrapS, (int)wrapMode);
+            GL.TexParameter(TextureTarget.Texture2D, TextureParameterName.TextureWrapT, (int)wrapMode);
 
             GL.GenerateMipmap(GenerateMipmapTarget.Texture2D);
 
             GL.BindTexture(TextureTarget.Texture2D, 0);
-            Map.UnlockBits(data);
+            map.UnlockBits(data);
+
+            if (dispose) map.Dispose();
+
+            return id;
         }
 
         public static implicit operator Texture(Bitmap map) => new Texture(map);

SMCode/SM.Base/Window/Contexts/DrawContext.cs

@@ -1,4 +1,5 @@
-using OpenTK;
+using System.Collections.Generic;
+using OpenTK;
 using SM.Base.Scene;
 using SM.OGL.Mesh;
 
@@ -7,10 +8,11 @@ namespace SM.Base.Contexts
     public struct DrawContext
     {
         public bool ForceViewport;
+        public bool Instancing;
 
         public Matrix4 World;
         public Matrix4 View;
-        public Matrix4 ModelMatrix;
+        public Instance[] Instances;
 
         public Mesh Mesh;
         public Material Material;

SMCode/SM.Base/Window/GenericWindow.cs

@@ -39,7 +39,7 @@ namespace SM.Base
             {
                 World = _viewportCamera.World,
                 View = _viewportCamera.CalculateViewMatrix(),
-                ModelMatrix = Matrix4.Identity,
+                Instances = new[] { new Instance {ModelMatrix = Matrix4.Identity, TexturePosition = Vector2.Zero, TextureScale = Vector2.One } },
                 Mesh = Plate.Object,
                 ForceViewport = ForceViewportCamera,
                 WorldScale = WorldScale

SMCode/SM.OGL/GLObject.cs

@@ -7,6 +7,8 @@ namespace SM.OGL
         protected int _id = -1;
         protected virtual bool AutoCompile { get; } = false;
 
+        public bool WasCompiled => _id > 0;
+
         public virtual int ID
         {
             get

SMCode/SM.OGL/Shaders/GenericShader.cs

@@ -36,7 +36,8 @@ namespace SM.OGL.Shaders
                 string key = GL.GetActiveUniform(_id, i, out _, out _);
                 int loc = GL.GetUniformLocation(_id, key);
 
-                if (key.StartsWith("[")) key = key.Split('[', ']')[0];
+                if (key.EndsWith("]")) 
+                    key = key.Split('[', ']')[0];
                 Uniforms.Add(key, loc);
             }
 
@@ -47,10 +48,10 @@ namespace SM.OGL.Shaders
             Load();
         }
 
-        public void DrawObject(Mesh.Mesh mesh, bool bindVAO = false)
+        public void DrawObject(Mesh.Mesh mesh, int amount, bool bindVAO = false)
         {
             if (bindVAO) GL.BindVertexArray(mesh);
-            GL.DrawArrays(mesh.PrimitiveType, 0, mesh.Vertex.Count);
-        } 
+            GL.DrawArraysInstanced(mesh.PrimitiveType, 0, mesh.Vertex.Count, amount);
+        }
     }
 }

SMCode/SM.OGL/Shaders/Uniform.cs

@@ -181,5 +181,7 @@ namespace SM.OGL.Shaders
             GL.BindTexture(TextureTarget.Texture2D, texture);
             SetUniform1(texturePos);
         }
+
+        public static implicit operator int(Uniform u) => u.Location;
     }
 }

SMCode/SM2D/Drawing/DrawBackground.cs

@@ -3,14 +3,17 @@ using OpenTK;
 using OpenTK.Graphics;
 using SM.Base.Contexts;
 using SM.Base.Scene;
+using SM.Base.StaticObjects;
 using SM.Base.Textures;
 using SM.OGL.Texture;
 using SM2D.Types;
 
 namespace SM2D.Drawing
 {
-    public class DrawBackground : DrawingBasis
+    public class DrawBackground : IBackgroundItem
     {
+        private Material _material = new Material();
+
         public Color4 Color
         {
             get => _material.Tint;
@@ -38,11 +41,17 @@ namespace SM2D.Drawing
             Texture = (Texture) texture;
         }
 
-        public override void Draw(DrawContext context)
+        public void Update(UpdateContext context)
         {
-            ApplyContext(ref context);
+            throw new System.NotImplementedException();
+        }
 
-            context.ModelMatrix = Matrix4.CreateScale(context.WorldScale.X, context.WorldScale.Y, 1);
+        public void Draw(DrawContext context)
+        {
+            context.Material = _material;
+            context.Mesh = Plate.Object;
+
+            context.Instances[0].ModelMatrix = Matrix4.CreateScale(context.WorldScale.X, context.WorldScale.Y, 1);
             _material.Shader.Draw(context);
         }
     }

SMCode/SM2D/Drawing/DrawEmpty.cs

@@ -1,24 +0,0 @@
-using OpenTK;
-using SM.Base.Contexts;
-using SM.Base.Scene;
-using SM.Base.Shader;
-using SM.Base.StaticObjects;
-using SM.OGL.Mesh;
-
-namespace SM2D.Drawing
-{
-    public class DrawEmpty : IShowItem
-    {
-        public void Update(UpdateContext context)
-        {
-            throw new System.NotImplementedException();
-        }
-
-        public void Draw(DrawContext context)
-        {
-            context.ModelMatrix = Matrix4.CreateScale(100, 100, 1);
-
-            Shaders.Default.Draw(context);
-        }
-    }
-}

SMCode/SM2D/Drawing/DrawText.cs

@@ -0,0 +1,25 @@
+using SM.Base.Contexts;
+using SM.Base.Text;
+using SM2D.Types;
+
+namespace SM2D.Drawing
+{
+    public class DrawText : TextDrawingBasis<Transformation>
+    {
+        public DrawText(Font font, string text) : base(font)
+        {
+            _text = text;
+        }
+
+        public override void Draw(DrawContext context)
+        {
+            base.Draw(context);
+            context.Instances = _modelMatrixs;
+            ApplyContext(ref context);
+
+            context.View = Transform.GetMatrix() * context.View;
+
+            _material.Shader.Draw(context);
+        }
+    }
+}

SMCode/SM2D/Drawing/DrawTexture.cs

@@ -44,7 +44,7 @@ namespace SM2D.Drawing
             ApplyContext(ref context);
 
             Transform.Size = new Vector2(Texture.Map.Width * MasterScale * Scale, Texture.Map.Height  * MasterScale * Scale);
-            context.ModelMatrix = Transform.GetMatrix();
+            context.Instances[0].ModelMatrix = Transform.GetMatrix();
 
             _material.Shader.Draw(context);
         }

SMCode/SM2D/SM2D.csproj

@@ -46,7 +46,7 @@
   </ItemGroup>
   <ItemGroup>
     <Compile Include="Drawing\DrawBackground.cs" />
-    <Compile Include="Drawing\DrawEmpty.cs" />
+    <Compile Include="Drawing\DrawText.cs" />
     <Compile Include="Drawing\DrawTexture.cs" />
     <Compile Include="GLWindow2D.cs" />
     <Compile Include="Properties\AssemblyInfo.cs" />

SMCode/SM2D/Scene/Scene.cs

@@ -1,9 +1,16 @@
-using SM.Base.Scene;
+using OpenTK.Graphics;
+using SM.Base.Scene;
+using SM2D.Drawing;
 
 namespace SM2D.Scene
 {
     public class Scene : GenericScene<Camera>
     {
-        
+        public DrawBackground Background => (DrawBackground)_background;
+
+        public Scene()
+        {
+            _background = new DrawBackground(Color4.Black);
+        }
     }
 }

SM_TEST/Program.cs

@@ -1,23 +1,25 @@
 using System;
-using System.Collections.Generic;
 using System.Drawing;
-using System.Linq;
-using System.Text;
-using System.Threading.Tasks;
-using OpenTK;
 using OpenTK.Graphics;
-using SM.Base;
 using SM2D;
 using SM2D.Drawing;
 using SM2D.Scene;
+using Font = SM.Base.Text.Font;
+using Vector2 = OpenTK.Vector2;
 
 namespace SM_TEST
 {
     class Program
     {
         static Scene scene;
+        private static Font font;
         static void Main(string[] args)
         {
+            font = new Font(@"C:\Windows\Fonts\Arial.ttf")
+            {
+                FontSize = 64
+            };
+
             GLWindow2D window = new GLWindow2D {Scaling = new Vector2(0, 1000)};
             window.SetScene(scene = new Scene());
             window.Load += WindowOnLoad;
@@ -26,13 +28,17 @@ namespace SM_TEST
 
         private static void WindowOnLoad(object sender, EventArgs e)
         {
-
             scene.Objects.Add(new DrawTexture(new Bitmap("soldier_logo.png")));
             scene.Objects.Add(new DrawTexture(new Bitmap("soldier_logo.png"))
             {
                 Transform = { Position = new Vector2(100), Rotation = 45},
             });
-            scene.Background = new DrawBackground(Color4.Beige);
+            scene.Objects.Add(new DrawText(font, "Testing...")
+            {
+                Transform = {Size = new Vector2(1), Position = new SM.Base.Types.Vector2(0, -400)},
+                Color = Color4.Black
+            });
+            scene.Background.Color = Color4.Beige;
         }
     }
 }