Added Camera, Renderer, ... and moved example to sandbox

GlitchyEngine/src/Application.bf

@@ -2,9 +2,6 @@ using System;
 using GlitchyEngine.Events;
 using GlitchyEngine.ImGui;
 using GlitchyEngine.Math;
-using DirectX.D3D11;
-using DirectX.Common;
-using DirectX.D3DCompiler;
 using System.Diagnostics;
 using GlitchyEngine.Renderer;
 
@@ -15,6 +12,7 @@ namespace GlitchyEngine
 		static Application s_Instance = null;
 
 		private Window _window ~ delete _;
+		private RendererAPI _rendererApi ~ delete _;
 		private bool _running = true;
 
 		private LayerStack _layerStack = new LayerStack() ~ delete _;
@@ -37,146 +35,15 @@ namespace GlitchyEngine
 			_window = new Window(.Default);
 			_window.EventCallback = new => OnEvent;
 
+			_rendererApi = new RendererAPI();
+			_rendererApi.Context = _window.Context;
+
+			RenderCommand.RendererAPI = _rendererApi;
+			
+			Renderer.Init(_window.Context);
+
 			_imGuiLayer = new ImGuiLayer();
 			PushOverlay(_imGuiLayer);
-
-			MakeTestTriangle();
-		}
-
-		struct VertexColor : IVertexData
-		{
-			public Vector3 Position;
-			public Color Color;
-
-			public this() => this = default;
-
-			public this(Vector3 pos, Color color)
-			{
-				Position = pos;
-				Color = color;
-			}
-
-			//public static readonly InputElementDescription[] InputLayout ~ delete _;
-			
-			public static readonly VertexLayout VertexLayout ~ delete _;
-
-			public static VertexLayout IVertexData.VertexLayout => VertexLayout;
-
-			static this()
-			{
-				//VertexLayout = new VertexLayout();
-			}
-		}
-		
-		VertexLayout _vertexLayout ~ delete _;
-
-		GeometryBinding _geometryBinding ~ delete _;
-		VertexBuffer _vertexBuffer ~ delete _;
-		IndexBuffer _indexBuffer ~ delete _;
-
-		GeometryBinding _quadGeometryBinding ~ delete _;
-		VertexBuffer _quadVertexBuffer ~ delete _;
-		IndexBuffer _quadIndexBuffer ~ delete _;
-
-		RasterizerState _rasterizerState ~ delete _;
-
-		VertexShader _vertexShader ~ delete _;
-		PixelShader _pixelShader ~ delete _;
-		Buffer<ColorRGBA> _cBuffer ~ delete _;
-
-		private Vector3 CircleCoord(float angle)
-		{
-			return .(Math.Cos(angle), Math.Sin(angle), 0);
-		}
-
-		private void MakeTestTriangle()
-		{
-			_vertexShader = Shader.FromFile!<VertexShader>(_window.Context, "content\\basicShader.hlsl", "VS");
-
-			// Create Input Layout
-
-			_vertexLayout = new VertexLayout(_window.Context, new .(
-				VertexElement(.R32G32B32_Float, "POSITION"),
-				VertexElement(.R8G8B8A8_UNorm,  "COLOR"),
-				), _vertexShader);
-
-			//
-			// Load pixel shader
-			//
-
-			_pixelShader = Shader.FromFile!<PixelShader>(_window.Context, "content\\basicShader.hlsl", "PS");
-
-			//Todo: _pixelShader.[Friend]_buffers = new .[1];
-
-			_cBuffer = new Buffer<ColorRGBA>(_window.Context, .(0, .Constant, .Immutable, .None));
-			_cBuffer.Data = .White;
-			_cBuffer.Update();
-
-			_pixelShader.Buffers.ReplaceBuffer("Constants", _cBuffer);
-
-			// Create hexagon
-			{
-				_geometryBinding = new GeometryBinding(_window.Context);
-				_geometryBinding.SetPrimitiveTopology(.TriangleList);
-				_geometryBinding.SetVertexLayout(_vertexLayout);
-	
-				float pO3 = Math.PI_f / 3.0f;
-				VertexColor[?] vertices = .(
-					VertexColor(.Zero, Color(255,255,255)),
-					VertexColor(CircleCoord(0), Color(255,  0,  0)),
-					VertexColor(CircleCoord(pO3), Color(255,255,  0)),
-					VertexColor(CircleCoord(pO3*2), Color(  0,255,  0)),
-					VertexColor(CircleCoord(Math.PI_f), Color(  0,255,255)),
-					VertexColor(CircleCoord(-pO3*2), Color(  0,  0,255)),
-					VertexColor(CircleCoord(-pO3), Color(255,  0,255)),
-				);
-	
-				_vertexBuffer = new VertexBuffer(Window.Context, typeof(VertexColor), (.)vertices.Count, .Immutable);
-				_vertexBuffer.SetData(vertices);
-				_geometryBinding.SetVertexBufferSlot(_vertexBuffer, 0);
-	
-				uint16[?] indices = .(
-					0, 1, 2,
-					0, 2, 3,
-					0, 3, 4,
-					0, 4, 5,
-					0, 5, 6,
-					0, 6, 1);
-	
-				_indexBuffer = new IndexBuffer(Window.Context, (.)indices.Count, .Immutable);
-				_indexBuffer.SetData(indices);
-				_geometryBinding.SetIndexBuffer(_indexBuffer);
-			}
-
-			// Create Quad
-			{
-				_quadGeometryBinding = new GeometryBinding(_window.Context);
-				_quadGeometryBinding.SetPrimitiveTopology(.TriangleList);
-				_quadGeometryBinding.SetVertexLayout(_vertexLayout);
-	
-				VertexColor[?] vertices = .(
-					VertexColor(Vector3(-0.75f, 0.75f, 0), Color.Blue),
-					VertexColor(Vector3(-0.75f, -0.75f, 0), Color.Blue),
-					VertexColor(Vector3(0.75f, -0.75f, 0), Color.Blue),
-					VertexColor(Vector3(0.75f, 0.75f, 0), Color.Blue),
-				);
-	
-				_quadVertexBuffer = new VertexBuffer(Window.Context, typeof(VertexColor), (.)vertices.Count, .Immutable);
-				_quadVertexBuffer.SetData(vertices);
-				_quadGeometryBinding.SetVertexBufferSlot(_quadVertexBuffer, 0);
-	
-				uint16[?] indices = .(
-					0, 1, 2,
-					2, 3, 0);
-	
-				_quadIndexBuffer = new IndexBuffer(Window.Context, (.)indices.Count, .Immutable);
-				_quadIndexBuffer.SetData(indices);
-				_quadGeometryBinding.SetIndexBuffer(_quadIndexBuffer);
-			}
-
-			// Create rasterizer state
-			GlitchyEngine.Renderer.RasterizerStateDescription rsDesc = .(.Solid, .Back, true);
-			_rasterizerState = new RasterizerState(Window.Context, rsDesc);
 		}
 
 		public void OnEvent(Event e)
@@ -200,28 +67,6 @@ namespace GlitchyEngine
 
 				Input.NewFrame();
 
-				_window.Context.ClearRenderTarget(null, .(0.2f, 0.2f, 0.2f));
-
-				// Draw test geometry
-				{
-					_window.Context.SetRenderTarget(null);
-					_window.Context.BindRenderTargets();
-
-					_window.Context.SetVertexShader(_vertexShader);
-					
-					_window.Context.SetPixelShader(_pixelShader);
-
-					_window.Context.SetRasterizerState(_rasterizerState);
-
-					_window.Context.SetViewport(Window.Context.SwapChain.BackbufferViewport);
-
-					_geometryBinding.Bind();
-					_window.Context.DrawIndexed(_geometryBinding.IndexCount);
-
-					_quadGeometryBinding.Bind();
-					_window.Context.DrawIndexed(_quadGeometryBinding.IndexCount);
-				}
-
 				for(Layer layer in _layerStack)
 					layer.Update(_gameTime);
 				

GlitchyEngine/src/Platform/DX11/Renderer/Dx11RendererAPI.bf

@@ -0,0 +1,27 @@
+using GlitchyEngine.Math;
+
+namespace GlitchyEngine.Renderer
+{
+	extension RendererAPI
+	{
+		private GraphicsContext _context;
+
+		public GraphicsContext Context
+		{
+			get => _context;
+			set => _context = value;
+		}
+
+		public static override API Api => .D3D11;
+
+		public override void Clear(RenderTarget renderTarget, ColorRGBA clearColor)
+		{
+			_context.ClearRenderTarget(renderTarget, clearColor);
+		}
+
+		public override void DrawIndexed(GeometryBinding geometry)
+		{
+			_context.DrawIndexed(geometry.IndexCount, geometry.IndexByteOffset, 0);
+		}
+	}
+}

GlitchyEngine/src/Renderer/BufferCollection.bf

@@ -105,6 +105,39 @@ namespace GlitchyEngine.Renderer
 			}
 		}
 
+		/**
+		 * Replaces the buffer with the given name.
+		 * @param name The name of the buffer to replace.
+		 * @param buffer The new buffer.
+		 * @param If set to true, the Collection will take ownership of the buffer; if false, the ownership will remain with the caller.
+		 */
+		public bool TryReplaceBuffer(StringView name, Buffer buffer, bool passOwnership = false)
+		{
+			if(_strToBuf.TryGetValue(name, let oldBuffer))
+			{
+				int index = GetIndexOfBuffer(oldBuffer);
+
+				ref BufferEntry bufferDesc = ref _buffers[index];
+
+				Log.EngineLogger.Assert(name == bufferDesc.Name);
+
+				if(bufferDesc.OwnsBuffer)
+					delete bufferDesc.Buffer;
+
+				bufferDesc.Buffer = buffer;
+				bufferDesc.OwnsBuffer = passOwnership;
+
+				_strToBuf[bufferDesc.Name] = buffer;
+				_idxToBuf[bufferDesc.Index] = buffer;
+
+				return true;
+			}
+			else
+			{
+				return false;
+			}
+		}
+
 		public void Add(int index, StringView name, Buffer buffer, bool passOwnership = false)
 		{
 			String nameStr = new String(name);

GlitchyEngine/src/Renderer/Camera.bf

@@ -0,0 +1,112 @@
+using System;
+using GlitchyEngine.Math;
+
+namespace GlitchyEngine.Renderer
+{
+	public abstract class Camera
+	{
+		protected Matrix _view;
+		protected Matrix _transform;
+		protected Matrix _projection;
+		protected Matrix _viewProjection;
+
+		protected float _nearPlane;
+		protected float _farPlane;
+
+		protected Vector3 _position;
+		protected Vector3 _rotation;
+
+		/// If true the transform matrix is outdated and needs to be recalculated.
+		protected bool _transformOutdated = true;
+		
+		/// If true the projection matrix is outdated and needs to be recalculated.
+		protected bool _projectionOutdated = true;
+
+		public Matrix Transform => _transform;
+
+		public Matrix View => _view;
+
+		public Matrix Projection => _projection;
+
+		public Matrix ViewProjection => _viewProjection;
+
+		public float NearPlane
+		{
+			get => _nearPlane;
+			set
+			{
+				if(_nearPlane == value)
+					return;
+				
+				_nearPlane = value;
+
+				_projectionOutdated = true;
+			}
+		}
+
+		public float FarPlane
+		{
+			get => _farPlane;
+			set
+			{
+				if(_farPlane == value)
+					return;
+				
+				_farPlane = value;
+
+				_projectionOutdated = true;
+			}
+		}
+
+		public Vector3 Position
+		{
+			get => _position;
+			set
+			{
+				if(_position == value)
+					return;
+
+				_position = value;
+				_transformOutdated = true;
+			}
+		}
+		
+		public Vector3 Rotation
+		{
+			get => _rotation;
+			set
+			{
+				if(_rotation == value)
+					return;
+
+				_rotation = value;
+				_transformOutdated = true;
+			}
+		}
+
+		public void Update()
+		{
+			bool changed = false;
+
+			if(_transformOutdated)
+			{
+				UpdateTransform();
+				_transformOutdated = false;
+				changed = true;
+			}
+
+			if(_projectionOutdated)
+			{
+				UpdateProjection();
+				_projectionOutdated = false;
+				changed = true;
+			}
+
+			if(changed)
+				_viewProjection = _projection * _view;
+		}
+
+		protected abstract void UpdateTransform();
+		protected abstract void UpdateProjection();
+	}
+}

GlitchyEngine/src/Renderer/Effect.bf

@@ -0,0 +1,31 @@
+using System;
+
+namespace GlitchyEngine.Renderer
+{
+	public class Effect
+	{
+		protected GraphicsContext _context;
+		internal VertexShader _vs;
+		internal PixelShader _ps;
+
+		public GraphicsContext Context => _context;
+
+		public VertexShader VertexShader
+		{
+			get => _vs;
+			set => _vs = value;
+		}
+		
+		public PixelShader PixelShader
+		{
+			get => _ps;
+			set => _ps = value;
+		}
+
+		public void Bind(GraphicsContext context)
+		{
+			context.SetVertexShader(_vs);
+			context.SetPixelShader(_ps);
+		}
+	}
+}

GlitchyEngine/src/Renderer/OrthographicCamera.bf

@@ -0,0 +1,92 @@
+using GlitchyEngine.Math;
+
+namespace GlitchyEngine.Renderer
+{
+	public class OrthographicCamera : Camera
+	{
+		protected float _bottom, _left, _right, _top;
+
+		public float Bottom
+		{
+			get => _bottom;
+			set
+			{
+				if(_bottom == value)
+					return;
+
+				_bottom = value;
+				_projectionOutdated = true;
+			}
+		}
+		
+		public float Left
+		{
+			get => _left;
+			set
+			{
+				if(_left == value)
+					return;
+
+				_left = value;
+				_projectionOutdated = true;
+			}
+		}
+		
+		public float Right
+		{
+			get => _right;
+			set
+			{
+				if(_right == value)
+					return;
+
+				_right = value;
+				_projectionOutdated = true;
+			}
+		}
+		
+		public float Top
+		{
+			get => _top;
+			set
+			{
+				if(_top == value)
+					return;
+
+				_top = value;
+				_projectionOutdated = true;
+			}
+		}
+
+		public float Width
+		{
+			get => _right - _left;
+			set
+			{
+				Left = -value / 2.0f;
+				Right = value / 2.0f;
+			}
+		}
+		
+		public float Height
+		{
+			get => _top - _bottom;
+			set
+			{
+				Bottom = -value / 2.0f;
+				Top = value / 2.0f;
+			}
+		}
+
+		protected override void UpdateProjection()
+		{
+			_projection = Matrix.OrthographicProjectionOffCenter(_left, _right, _top, _bottom, _nearPlane, _farPlane);
+		}
+
+		protected override void UpdateTransform()
+		{
+			_transform = Matrix.Translation(_position) * Matrix.RotationZ(_rotation.Z) * Matrix.RotationY(_rotation.Y) * Matrix.RotationX(_rotation.X);
+			_view = _transform.Invert();
+		}
+	}
+}

GlitchyEngine/src/Renderer/PerspectiveCamera.bf

@@ -0,0 +1,104 @@
+using System;
+using GlitchyEngine.Math;
+
+namespace GlitchyEngine.Renderer
+{
+	/**
+	 * If FarPlane is float.PositiveInfinity the projection matrix will be an infinite projection (that means no far plane)
+	 */
+	public class PerspectiveCamera : Camera
+	{
+		public enum ProjectionType
+		{
+			/**
+			 * The projection has a near and a far plane. The near plane has a depth of 0, the far plane a depth of 1.
+			 */
+			Limited,
+			/**
+			 * The projection has a near and a far plane. The near plane has a depth of 1, the far plane a depth of 0.
+			 */
+			LimitedReversed,
+			/**
+			 * The projection only has a near. The near plane has a depth of 0; infinite distance has a value of 1.
+			 */
+			Infinite,
+			/**
+			 * The projection only has a near. The near plane has a depth of 1; infinite distance has a value of 0.
+			 */
+			InfiniteReversed
+		}
+
+		protected ProjectionType _projectionType;
+
+		protected float _fovY;
+		
+		protected float _aspect;
+
+		/**
+		 * Gets or Sets the projection type.
+		 */
+		public ProjectionType ProjectionType
+		{
+			get => _projectionType;
+			set
+			{
+				if(_projectionType == value)
+					return;
+
+				_projectionType = value;
+				_projectionOutdated = true;
+			}
+		}
+
+		public float FovY
+		{
+			get => _fovY;
+			set
+			{
+				if(_fovY == value)
+					return;
+
+				_fovY = value;
+				_projectionOutdated = true;
+			}
+		}
+
+		public float AspectRatio
+		{
+			get => _aspect;
+			set
+			{
+				if(_aspect == value)
+					return;
+
+				_aspect = value;
+				_projectionOutdated = true;
+			}
+		}
+
+		protected override void UpdateProjection()
+		{
+			Log.EngineLogger.Assert(_nearPlane < _farPlane, "The near plane must be smaller than the far plane.");
+
+			switch(_projectionType)
+			{
+			case .Limited:
+				_projection = Matrix.PerspectiveProjection(_fovY, _aspect, _nearPlane, _farPlane);
+			case .LimitedReversed:
+				_projection = Matrix.ReversedPerspectiveProjection(_fovY, _aspect, _nearPlane, _farPlane);
+			case .Infinite:
+				_projection = Matrix.InfinitePerspectiveProjection(_fovY, _aspect, _nearPlane); // todo: epsilon
+			case .InfiniteReversed:
+				_projection = Matrix.ReversedInfinitePerspectiveProjection(_fovY, _aspect, _nearPlane); // todo: epsilon
+			default:
+				Log.EngineLogger.Assert(false, "Unknown projection type.");
+			}
+		}
+
+		protected override void UpdateTransform()
+		{
+			_transform = Matrix.Translation(_position) * Matrix.RotationZ(_rotation.Z) * Matrix.RotationY(_rotation.Y) * Matrix.RotationX(_rotation.X);
+			_view = _transform.Invert();
+		}
+	}
+}

GlitchyEngine/src/Renderer/RenderCommand.bf

@@ -0,0 +1,28 @@
+using System;
+using GlitchyEngine.Math;
+
+namespace GlitchyEngine.Renderer
+{
+	public static class RenderCommand
+	{
+		private static RendererAPI _rendererAPI;
+
+		public static RendererAPI RendererAPI
+		{
+			get => _rendererAPI;
+			set => _rendererAPI = value;
+		}
+		
+		[Inline]
+		public static void Clear(RenderTarget renderTarget, ColorRGBA color)
+		{
+			_rendererAPI.Clear(renderTarget, color);
+		}
+
+		[Inline]
+		public static void DrawIndexed(GeometryBinding geometry)
+		{
+			_rendererAPI.DrawIndexed(geometry);
+		}
+	}
+}

GlitchyEngine/src/Renderer/Renderer.bf

@@ -0,0 +1,42 @@
+using GlitchyEngine.Math;
+
+namespace GlitchyEngine.Renderer
+{
+	public class Renderer
+	{
+		struct SceneConstants
+		{
+			public Matrix ViewProjection;
+		}
+
+		static GraphicsContext _context;
+
+		static Buffer<SceneConstants> _sceneConstants ~ delete _;
+
+		public static void Init(GraphicsContext context)
+		{
+			_context = context;
+			_sceneConstants = new Buffer<SceneConstants>(_context, .(0, .Constant, .Dynamic, .Write));
+			_sceneConstants.Update();
+		}
+
+		public static void BeginScene(Camera camera)
+		{
+			_sceneConstants.Data.ViewProjection = camera.ViewProjection;
+			_sceneConstants.Update();
+		}
+
+		public static void EndScene(){}
+
+		public static void Submit(GeometryBinding geometry, Effect effect)
+		{
+			effect.Bind(_context);
+
+			effect.PixelShader?.Buffers.TryReplaceBuffer("SceneConstants", _sceneConstants);
+			effect.VertexShader?.Buffers.TryReplaceBuffer("SceneConstants", _sceneConstants);
+
+			geometry.Bind();
+			RenderCommand.DrawIndexed(geometry);
+		}
+	}
+}

GlitchyEngine/src/Renderer/RendererAPI.bf

@@ -0,0 +1,22 @@
+using GlitchyEngine.Math;
+
+namespace GlitchyEngine.Renderer
+{
+	public class RendererAPI
+	{
+		public enum API
+		{
+			None,
+			D3D11
+		}
+
+		/**
+		 * Gets which graphics API is active.
+		 */
+		public static extern API Api { get; }
+
+		public extern void Clear(RenderTarget renderTarget, ColorRGBA clearColor);
+
+		public extern void DrawIndexed(GeometryBinding geometry);
+	}
+}

Sandbox/content/basicShader.hlsl

@@ -1,4 +1,4 @@
-cbuffer Constants : register(b0)
+cbuffer SceneConstants : register(b0)
 {
     float4x4 Transform = float4x4(1, 0, 0, 0, 
         0, 1, 0, 0, 

Sandbox/src/SandboxApp.bf

@@ -5,18 +5,185 @@ using System.Diagnostics;
 using GlitchLog;
 using GlitchyEngine.ImGui;
 using ImGui;
+using GlitchyEngine.Renderer;
+using GlitchyEngine.Math;
 
 namespace Sandbox
 {
 	class ExampleLayer : Layer
 	{
+		private OrthographicCamera _camera ~ delete _;
+		
+		struct VertexColor : IVertexData
+		{
+			public Vector3 Position;
+			public Color Color;
+
+			public this() => this = default;
+
+			public this(Vector3 pos, Color color)
+			{
+				Position = pos;
+				Color = color;
+			}
+
+			//public static readonly InputElementDescription[] InputLayout ~ delete _;
+			
+			public static readonly VertexLayout VertexLayout ~ delete _;
+
+			public static VertexLayout IVertexData.VertexLayout => VertexLayout;
+
+			static this()
+			{
+				//VertexLayout = new VertexLayout();
+			}
+		}
+
+		VertexLayout _vertexLayout ~ delete _;
+
+		GeometryBinding _geometryBinding ~ delete _;
+		VertexBuffer _vertexBuffer ~ delete _;
+		IndexBuffer _indexBuffer ~ delete _;
+
+		GeometryBinding _quadGeometryBinding ~ delete _;
+		VertexBuffer _quadVertexBuffer ~ delete _;
+		IndexBuffer _quadIndexBuffer ~ delete _;
+
+		RasterizerState _rasterizerState ~ delete _;
+
+		Effect _effect ~ delete _;
+		VertexShader _vertexShader ~ delete _;
+		PixelShader _pixelShader ~ delete _;
+
+		Buffer<ColorRGBA> _cBuffer ~ delete _;
+
+		private Vector3 CircleCoord(float angle)
+		{
+			return .(Math.Cos(angle), Math.Sin(angle), 0);
+		}
+
 		[AllowAppend]
-		public this() : base("Example") {  }
+		public this() : base("Example")
+		{
+			{
+				_effect = new Effect();
+
+				_vertexShader = Shader.FromFile!<VertexShader>(Application.Get().Window.Context, "content\\basicShader.hlsl", "VS");
+				_effect.VertexShader = _vertexShader;
+
+				_pixelShader = Shader.FromFile!<PixelShader>(Application.Get().Window.Context, "content\\basicShader.hlsl", "PS");
+				_effect.PixelShader = _pixelShader;
+			}
+
+			// Create Input Layout
+
+			_vertexLayout = new VertexLayout(Application.Get().Window.Context, new .(
+				VertexElement(.R32G32B32_Float, "POSITION"),
+				VertexElement(.R8G8B8A8_UNorm,  "COLOR"),
+				), _vertexShader);
+
+			_cBuffer = new Buffer<ColorRGBA>(Application.Get().Window.Context, .(0, .Constant, .Immutable));
+			_cBuffer.Data = .White;
+			_cBuffer.Update();
+
+			_pixelShader.Buffers.ReplaceBuffer("Constants", _cBuffer);
+
+			// Create hexagon
+			{
+				_geometryBinding = new GeometryBinding(Application.Get().Window.Context);
+				_geometryBinding.SetPrimitiveTopology(.TriangleList);
+				_geometryBinding.SetVertexLayout(_vertexLayout);
+	
+				float pO3 = Math.PI_f / 3.0f;
+				VertexColor[?] vertices = .(
+					VertexColor(.Zero, Color(255,255,255)),
+					VertexColor(CircleCoord(0), Color(255,  0,  0)),
+					VertexColor(CircleCoord(pO3), Color(255,255,  0)),
+					VertexColor(CircleCoord(pO3*2), Color(  0,255,  0)),
+					VertexColor(CircleCoord(Math.PI_f), Color(  0,255,255)),
+					VertexColor(CircleCoord(-pO3*2), Color(  0,  0,255)),
+					VertexColor(CircleCoord(-pO3), Color(255,  0,255)),
+				);
+	
+				_vertexBuffer = new VertexBuffer(Application.Get().Window.Context, typeof(VertexColor), (.)vertices.Count, .Immutable);
+				_vertexBuffer.SetData(vertices);
+				_geometryBinding.SetVertexBufferSlot(_vertexBuffer, 0);
+	
+				uint16[?] indices = .(
+					0, 1, 2,
+					0, 2, 3,
+					0, 3, 4,
+					0, 4, 5,
+					0, 5, 6,
+					0, 6, 1);
+	
+				_indexBuffer = new IndexBuffer(Application.Get().Window.Context, (.)indices.Count, .Immutable);
+				_indexBuffer.SetData(indices);
+				_geometryBinding.SetIndexBuffer(_indexBuffer);
+			}
+
+			// Create Quad
+			{
+				_quadGeometryBinding = new GeometryBinding(Application.Get().Window.Context);
+				_quadGeometryBinding.SetPrimitiveTopology(.TriangleList);
+				_quadGeometryBinding.SetVertexLayout(_vertexLayout);
+	
+				VertexColor[?] vertices = .(
+					VertexColor(Vector3(-0.75f, 0.75f, 0), Color.Blue),
+					VertexColor(Vector3(-0.75f, -0.75f, 0), Color.Blue),
+					VertexColor(Vector3(0.75f, -0.75f, 0), Color.Blue),
+					VertexColor(Vector3(0.75f, 0.75f, 0), Color.Blue),
+				);
+	
+				_quadVertexBuffer = new VertexBuffer(Application.Get().Window.Context, typeof(VertexColor), (.)vertices.Count, .Immutable);
+				_quadVertexBuffer.SetData(vertices);
+				_quadGeometryBinding.SetVertexBufferSlot(_quadVertexBuffer, 0);
+	
+				uint16[?] indices = .(
+					0, 1, 2,
+					2, 3, 0);
+	
+				_quadIndexBuffer = new IndexBuffer(Application.Get().Window.Context, (.)indices.Count, .Immutable);
+				_quadIndexBuffer.SetData(indices);
+				_quadGeometryBinding.SetIndexBuffer(_quadIndexBuffer);
+			}
+
+			// Create rasterizer state
+			GlitchyEngine.Renderer.RasterizerStateDescription rsDesc = .(.Solid, .Back, true);
+			_rasterizerState = new RasterizerState(Application.Get().Window.Context, rsDesc);
+
+			// Camera
+			_camera = new OrthographicCamera();
+			_camera.NearPlane = -1;
+			_camera.FarPlane = 1;
+		}
 
 		public override void Update(GameTime gameTime)
 		{
-			if(Input.IsKeyPressed(.Tab))
-				Log.ClientLogger.Info("Tab key is pressed!");
+			_camera.Width = Application.Get().Window.Context.SwapChain.BackbufferViewport.Width / 256;
+			_camera.Height = Application.Get().Window.Context.SwapChain.BackbufferViewport.Height / 256;
+
+			_camera.Update();
+
+			RenderCommand.Clear(null, .(0.2f, 0.2f, 0.2f));
+
+			// Draw test geometry
+			Application.Get().Window.Context.SetRenderTarget(null);
+			Application.Get().Window.Context.BindRenderTargets();
+
+			Application.Get().Window.Context.SetRasterizerState(_rasterizerState);
+
+			Application.Get().Window.Context.SetViewport(Application.Get().Window.Context.SwapChain.BackbufferViewport);
+
+			RenderCommand.SetViewport(Application.Get().Window.Context.SwapChain.BackbufferViewport);
+
+			Renderer.BeginScene(_camera);
+
+			Renderer.Submit(_geometryBinding, _effect);
+			Renderer.Submit(_quadGeometryBinding, _effect);
+
+			Renderer.EndScene();
+
 		}
 
 		public override void OnEvent(Event event)