Start of AnimationSystem

GlitchyEngine/src/Content/ModelLoader.bf

@@ -3,13 +3,19 @@ using System.Collections;
 using cgltf;
 using GlitchyEngine.Math;
 using GlitchyEngine.Renderer;
+using GlitchyEngine.Renderer.Animation;
 
 namespace GlitchyEngine.Content
 {
 	public static class ModelLoader
 	{
-		public static void LoadModel(String filename, GraphicsContext context, Effect validationEffect, List<(Matrix Transform, GeometryBinding Model)> output)
+		static readonly Matrix RightToLeftHand = .Scaling(1, 1, -1);
+
+		public static void LoadModel(String filename, GraphicsContext context, Effect validationEffect, List<(Matrix Transform, GeometryBinding Model)> output, out Skeleton skeleton, out AnimationClip clip)
 		{
+			skeleton = null;
+			clip = null;
+
 			CGLTF.Options options = .();
 			CGLTF.Data* data;
 			CGLTF.Result result = CGLTF.ParseFile(options, filename, out data);
@@ -25,7 +31,9 @@ namespace GlitchyEngine.Content
 				if(node.Mesh != null)
 				{
 					Matrix transform = ?;
-					CGLTF.NodeTransformWorld(&node, (float*)&transform);
+					CGLTF.NodeTransformLocal(&node, (float*)&transform);
+
+					transform = RightToLeftHand * transform;
 
 					for(var primitive in node.Mesh.Primitives)
 					{
@@ -34,6 +42,11 @@ namespace GlitchyEngine.Content
 						output.Add((transform, binding));
 					}
 				}
+
+				if(node.Skin != null)
+				{
+					(skeleton, clip) = ExtractBonestuff(node.Skin, data);
+				}
 			}
 
 			/* TODO make awesome stuff */
@@ -96,6 +109,8 @@ namespace GlitchyEngine.Content
 
 					VertexBuffer vertexBuffer = null;
 
+					binding.VertexCount = (uint32)attribute.Data.Count;
+
 					// Get vertex buffer
 					{
 						CGLTF.BufferView* bufferView = attribute.Data.BufferView;
@@ -130,7 +145,14 @@ namespace GlitchyEngine.Content
 						binding.SetVertexBufferSlot(bufferBinding, (.)bindingSlot);
 					}
 
-					VertexElement element = .(format, new String(attribute.Name), true, (.)attribute.Index, (.)bindingSlot);
+					StringView strView = .(attribute.Name);
+
+					while((*(strView.EndPtr - 1)).IsDigit)
+					{
+						strView.Length--;
+					}
+
+					VertexElement element = .(format, new String(strView), true, (.)attribute.Index, (.)bindingSlot);
 					elements.Add(element);
 				}
 
@@ -146,9 +168,178 @@ namespace GlitchyEngine.Content
 				binding.SetVertexLayout(layout..ReleaseRefNoDelete());
 			}
 
+			// TODO: calculate normals if missing
+			// TODO: calculate tangents if missing (MikkTSpace algorithm)
+			// Note: Bitangent = cross(normal, tangent.xyz) * tangent.w
+
 			return binding;
 		}
 
+		static (Skeleton, AnimationClip) ExtractBonestuff(CGLTF.Skin* skin, CGLTF.Data* data)
+		{
+			Skeleton skeleton = new Skeleton();
+			skeleton.Joints = new Joint[skin.Joints.Length];
+
+			AnimationClip testClip = new AnimationClip();
+			testClip.Skeleton = skeleton;
+			testClip.FramesPerSecond = 0;
+			testClip.JointAnimations = new JointAnimation[skeleton.Joints.Count];
+			//testClip.Samples = new AnimationSample[1];
+			//testClip.Samples[0].JointPose = new JointPose[skeleton.Joints.Count];
+			testClip.IsLooping = true;
+
+			for(int i < skin.Joints.Length)
+			{
+				ref Joint joint = ref skeleton.Joints[i];
+
+
+
+				joint.InverseBindPose = GetEntry<Matrix>(skin.InverseBindMatrices, i);
+
+				joint.Name = new String(skin.Joints[i].Name);
+
+				int parentId = skin.Joints.IndexOf(skin.Joints[i].Parent);
+
+				Log.EngineLogger.AssertDebug(parentId < uint8.MaxValue, scope $"A skeleton must not have more than {uint8.MaxValue - 1} bones.");
+
+				if(parentId == -1)
+					joint.ParentID = uint8.MaxValue;
+				else
+					joint.ParentID = (uint8)parentId;
+			}
+
+			for(var channel in data.Animations[0].Channels)
+			{
+				int nodeIndex = skin.Joints.IndexOf(channel.TargetNode);
+
+				Log.EngineLogger.AssertDebug(nodeIndex != -1);
+
+				ref JointAnimation jointAnimation = ref testClip.JointAnimations[nodeIndex];
+
+				Log.EngineLogger.AssertDebug(channel.Sampler.Input.Count == channel.Sampler.Output.Count);
+
+				int samples = (int)channel.Sampler.Input.Count;
+
+				Log.EngineLogger.AssertDebug(channel.Sampler.Input.ComponentType == .R_32f);
+				Log.EngineLogger.AssertDebug(channel.Sampler.Input.Type == .Scalar);
+
+				InterpolationMode interpolationMode;
+
+				switch(channel.Sampler.Interpolation)
+				{
+				case .Step:
+					interpolationMode = .Step;
+				case .Linear:
+					interpolationMode = .Linear;
+				case .CubicSpline:
+					interpolationMode = .CubicSpline;
+				}
+
+				switch(channel.TargetPath)
+				{
+				case .Translation:
+					jointAnimation.TranslationChannel = new .(samples, interpolationMode);
+
+					Log.EngineLogger.AssertDebug(channel.Sampler.Output.ComponentType == .R_32f);
+					Log.EngineLogger.AssertDebug(channel.Sampler.Output.Type == .Vec3);
+
+					for(int i < samples)
+					{
+						float timeStamp = GetEntry<float>(channel.Sampler.Input, i);
+						Vector3 sample = GetEntry<Vector3>(channel.Sampler.Output, i);
+						/*
+						float timeStamp = GetEntry<float>(channel.Sampler.Input, i);
+						float timeStamp2 = ?;
+						CGLTF.AccessorReadFloat(channel.Sampler.Input, (uint)i, (float*)&timeStamp2, 1);
+
+						Log.EngineLogger.Assert(timeStamp == timeStamp2);
+
+						Vector3 sample2 = ?;
+						CGLTF.AccessorReadFloat(channel.Sampler.Output, (uint)i, (float*)&sample2, 3);
+						
+						Log.EngineLogger.Assert(sample == sample2);
+						*/
+						jointAnimation.TranslationChannel.TimeStamps[i] = timeStamp;
+						jointAnimation.TranslationChannel.Values[i] = sample;
+					}
+				case .Rotation:
+					jointAnimation.RotationChannel = new .(samples, interpolationMode);
+
+					Log.EngineLogger.AssertDebug(channel.Sampler.Output.ComponentType == .R_32f);
+					Log.EngineLogger.AssertDebug(channel.Sampler.Output.Type == .Vec4);
+
+					for(int i < samples)
+					{
+						float timeStamp = GetEntry<float>(channel.Sampler.Input, i);
+						Quaternion sample = GetEntry<Quaternion>(channel.Sampler.Output, i);
+
+						jointAnimation.RotationChannel.TimeStamps[i] = timeStamp;
+						jointAnimation.RotationChannel.Values[i] = sample;
+					}
+				case .Scale:
+					jointAnimation.ScaleChannel = new .(samples, interpolationMode);
+
+					Log.EngineLogger.AssertDebug(channel.Sampler.Output.ComponentType == .R_32f);
+					Log.EngineLogger.AssertDebug(channel.Sampler.Output.Type == .Vec3);
+
+					for(int i < samples)
+					{
+						float timeStamp = GetEntry<float>(channel.Sampler.Input, i);
+						Vector3 sample = GetEntry<Vector3>(channel.Sampler.Output, i);
+
+						jointAnimation.ScaleChannel.TimeStamps[i] = timeStamp;
+						jointAnimation.ScaleChannel.Values[i] = sample;
+					}
+				default:
+					Log.EngineLogger.Error($"Unknown channel target path \"{channel.TargetPath}\"");
+				}
+
+				//channel.
+
+				//
+
+				//testClip.JointAnimations[i].
+				testClip.Duration = Math.Max(testClip.Duration, jointAnimation.Duration);
+			}
+
+			return (skeleton, testClip);
+		}
+
+		static T GetEntry<T>(CGLTF.Accessor* accessor, int index)
+		{
+			Log.EngineLogger.AssertDebug((uint)index < accessor.Count);
+			
+			T result = ?;
+			
+			switch(typeof(T))
+			{
+			case typeof(float):
+				CGLTF.AccessorReadFloat(accessor, (uint)index, (float*)&result, 1);
+			case typeof(Vector2):
+				CGLTF.AccessorReadFloat(accessor, (uint)index, (float*)&result, 2);
+			case typeof(Vector3):
+				CGLTF.AccessorReadFloat(accessor, (uint)index, (float*)&result, 3);
+			case typeof(Vector4), typeof(Quaternion):
+				CGLTF.AccessorReadFloat(accessor, (uint)index, (float*)&result, 4);
+			case typeof(Matrix):
+				CGLTF.AccessorReadFloat(accessor, (uint)index, (float*)&result, 16);
+			}
+
+			return result;
+			
+			/*
+			uint8* data = (uint8*)accessor.BufferView.Buffer.Data;
+
+			data += accessor.BufferView.Offset;
+
+			data += accessor.Offset;
+
+			data += accessor.Stride * (uint)index;
+			
+			return *(T*)data;
+			*/
+		}
+
 		/**
 		 * Converts the vector and component type to the corresponding Format.
 		 */

GlitchyEngine/src/Renderer/Animation/AnimationClip.bf

@@ -0,0 +1,258 @@
+using GlitchyEngine.Math;
+using System;
+
+namespace GlitchyEngine.Renderer.Animation
+{
+	class AnimationPlayer
+	{
+		public Skeleton Skeleton;
+		public AnimationClip CurrentClip;
+		public float TimeStamp;
+
+		public SkeletonPose Pose ~ delete _;
+
+		public Matrix[] SkinningMatricies ~ delete _;
+		public Matrix3x3[] InvTransSkinningMatricies ~ delete _;
+
+		public this(Skeleton skeleton, AnimationClip clip)
+		{
+			Skeleton = skeleton;
+			CurrentClip = clip;
+
+			Pose = new SkeletonPose(Skeleton);
+
+			SkinningMatricies = new Matrix[Skeleton.Joints.Count];
+			InvTransSkinningMatricies = new Matrix3x3[Skeleton.Joints.Count];
+		}
+
+		public void Update(GameTime gameTime)
+		{
+			TimeStamp += (float)gameTime.FrameTime.TotalSeconds;
+
+			if(CurrentClip.IsLooping && CurrentClip.Duration != 0)
+			{
+				TimeStamp %= CurrentClip.Duration;
+			}
+
+			for(int i < Skeleton.Joints.Count)
+			{
+				ref JointPose localPose = ref Pose.LocalPose[i];
+
+				localPose = CurrentClip.JointAnimations[i].GetCurrentPose(TimeStamp);
+
+				Matrix jointToParent =
+					Matrix.Translation(localPose.Translation) *
+					Matrix.RotationQuaternion(localPose.Rotation) *
+					Matrix.Scaling(localPose.Scale);
+
+				uint8 parentIndex = Skeleton.Joints[i].ParentID;
+				
+				ref Matrix globalPose = ref Pose.GlobalPose[i];
+
+				if(parentIndex == uint8.MaxValue)
+				{
+					globalPose = jointToParent;
+				}
+				else
+				{
+					globalPose = Pose.GlobalPose[parentIndex] * jointToParent;
+				}
+
+				SkinningMatricies[i] = globalPose * Skeleton.Joints[i].InverseBindPose;
+				InvTransSkinningMatricies[i] = ((Matrix3x3)SkinningMatricies[i]).Inverse().Transpose();
+			}
+		}
+	}
+
+	class AnimationClip
+	{
+		public Skeleton Skeleton;
+		public float FramesPerSecond;
+		public JointAnimation[] JointAnimations;
+		public bool IsLooping;
+		public float Duration;
+
+		// TODO: check
+
+		public ~this()
+		{
+			for(var jointAnimation in JointAnimations)
+			{
+				jointAnimation.Dispose();
+			}
+
+			delete JointAnimations;
+		}
+	}
+	
+	public enum InterpolationMode
+	{
+		Step,
+		Linear,
+		CubicSpline
+	}
+
+	class JointAnimationChannel<T> where T : struct // : IDisposable 
+	{
+		public float[] TimeStamps;
+		public T[] Values;
+		public InterpolationMode InterpolationMode = .Step;
+
+		public float Duration => TimeStamps[TimeStamps.Count - 1];
+
+		public this(int samples, InterpolationMode interpolationMode)
+		{
+			TimeStamps = new float[samples];
+			Values = new T[samples];
+			InterpolationMode = interpolationMode;
+		}
+
+		public ~this()
+		{
+			delete TimeStamps;
+			delete Values;
+		}
+		
+
+		public (T, T, float) GetSample(float currentTime)
+		{
+			let (previousIndex, previousTime) = FindPreviousTimeStamp(currentTime);
+
+			T previousSample = Values[previousIndex];
+
+			if(InterpolationMode == .Step)
+			{
+				return (previousSample, default(T), 0f);
+			}
+			else
+			{
+				int nextIndex = previousIndex + 1;
+				if(nextIndex >= Values.Count)
+					nextIndex = Values.Count - 1;
+
+				float nextTime = TimeStamps[nextIndex];
+
+				T nextSample = Values[nextIndex];
+				
+				float interpolationValue = (currentTime - previousTime) / (nextTime - previousTime);
+
+				return (previousSample, nextSample, interpolationValue);
+			}
+		}
+
+		public (int Index, float timeStamp) FindPreviousTimeStamp(float currentTime)
+		{
+			// TODO use binary search to speed things up?
+
+			int index = TimeStamps.Count - 1;
+
+			for(int i < TimeStamps.Count)
+			{
+				if(TimeStamps[i] > currentTime)
+				{
+					index = i - 1;
+					break;
+				}
+			}
+
+			if(index == -1)
+				index = 0;
+
+			// Don't return -1 but return first frame
+			return (index, TimeStamps[index]);
+
+			//return array.Count - 1;
+		}
+	}
+
+	struct JointAnimation : IDisposable
+	{
+		public JointAnimationChannel<Vector3> TranslationChannel;
+		public JointAnimationChannel<Quaternion> RotationChannel;
+		public JointAnimationChannel<Vector3> ScaleChannel;
+
+		public float Duration
+		{
+			get
+			{
+				return Math.Max(Math.Max(
+					TranslationChannel?.Duration ?? 0, RotationChannel?.Duration ?? 0), ScaleChannel?.Duration ?? 0);
+			}
+		}
+
+		public void Dispose()
+		{
+			delete TranslationChannel;
+			delete RotationChannel;
+			delete ScaleChannel;
+		}
+
+		public JointPose GetCurrentPose(float timeStamp)
+		{
+			JointPose result;
+
+			if(TranslationChannel != null)
+			{
+				let (previous, next, interpolationValue) = TranslationChannel.GetSample(timeStamp);
+
+				switch(TranslationChannel.InterpolationMode)
+				{
+				case .Step:
+					result.Translation = previous;
+				case .Linear:
+					result.Translation = Vector3.Lerp(previous, next, interpolationValue);
+				default:
+					result.Rotation = ?;
+					Runtime.NotImplemented();
+				}
+			}
+			else
+			{
+				result.Translation = .Zero;
+			}
+			
+			if(RotationChannel != null)
+			{
+				let (previous, next, interpolationValue) = RotationChannel.GetSample(timeStamp);
+				
+				switch(RotationChannel.InterpolationMode)
+				{
+				case .Step:
+					result.Rotation = previous;
+				case .Linear:
+					result.Rotation = Quaternion.Slerp(previous, next, interpolationValue);
+				default:
+					result.Rotation = ?;
+					Runtime.NotImplemented();
+				}
+			}
+			else
+			{
+				result.Rotation = .Identity;
+			}
+			
+			if(ScaleChannel != null)
+			{
+				let (previous, next, interpolationValue) = ScaleChannel.GetSample(timeStamp);
+				
+				//switch(ScaleChannel.InterpolationMode)
+				switch(InterpolationMode.Step)
+				{
+				case .Step:
+					result.Scale = previous;
+				case .Linear:
+					result.Scale = Vector3.Lerp(previous, next, interpolationValue);
+				default:
+					result.Rotation = ?;
+					Runtime.NotImplemented();
+				}
+			}
+			else
+			{
+				result.Scale = .One;
+			}
+
+			return result;
+		}
+	}
+}

GlitchyEngine/src/Renderer/Animation/Joint.bf

@@ -0,0 +1,20 @@
+using GlitchyEngine.Math;
+using System;
+
+namespace GlitchyEngine.Renderer.Animation
+{
+	public struct Joint
+	{
+		/// Converts vertices from model space to joint space
+		public Matrix InverseBindPose;
+		public String Name;
+		public uint8 ParentID;
+	}
+
+	public struct JointPose
+	{
+		public Quaternion Rotation;
+		public Vector3 Translation;
+		public Vector3 Scale;
+	}
+}

GlitchyEngine/src/Renderer/Animation/Skeleton.bf

@@ -0,0 +1,42 @@
+using GlitchyEngine.Math;
+
+namespace GlitchyEngine.Renderer.Animation
+{
+	public class Skeleton
+	{
+		public Joint[] Joints ~ delete _;
+
+		public Joint? GetParent(Joint joint)
+		{
+			if(joint.ParentID == uint8.MaxValue)
+				return null;
+
+			return Joints[joint.ParentID];
+		}
+
+		public ~this()
+		{
+			for(var joint in Joints)
+			{
+				delete joint.Name;
+			}
+		}
+	}
+
+	public class SkeletonPose
+	{
+		public Skeleton Skeleton;
+		public JointPose[] LocalPose ~ delete _;
+		public Matrix[] GlobalPose ~ delete _;
+
+		public this(Skeleton skeleton)
+		{
+			Skeleton = skeleton;
+
+			int jointCount = Skeleton.Joints.Count;
+
+			LocalPose = new JointPose[jointCount];
+			GlobalPose = new Matrix[jointCount];
+		}
+	}
+}

GlitchyEngine/src/Renderer/BufferVariable.bf

@@ -139,6 +139,15 @@ namespace GlitchyEngine.Renderer
 			*(Matrix4x3*)firstByte = value;
 		}
 
+		public void SetData(Matrix4x3[] value)
+		{
+			EnsureTypeMatch(4, 3, .Float);
+
+			// TODO: assert length
+
+			Internal.MemCpy(firstByte, value.Ptr, sizeof(Matrix4x3) * Math.Min(value.Count, _elements));
+		}
+
 		public void SetData(Matrix3x3 value)
 		{
 			EnsureTypeMatch(3, 3, .Float);
@@ -148,6 +157,18 @@ namespace GlitchyEngine.Renderer
 			// Todo: maybe manual copy
 		}
 
+		public void SetData(Matrix3x3[] value)
+		{
+			EnsureTypeMatch(3, 3, .Float);
+
+			// TODO: assert length
+
+			for(int i < Math.Min(value.Count, _elements))
+			{
+				((Matrix4x3*)firstByte)[i] = Matrix4x3(value[i]);
+			}
+		}
+		
 		public void SetData(Matrix value)
 		{
 			EnsureTypeMatch(4, 4, .Float);

Sandbox/content/Shaders/testShader.hlsl

@@ -17,10 +17,18 @@ cbuffer Constants
     float3 LightDir;
 }
 
+cbuffer SkinningMatrices
+{
+    matrix SkinningMatrices[255];
+    float3x3 InvTransSkinningMatrices[255];
+}
+
 struct VS_IN
 {
-    float3 Position : POSITION;
+    float3 Position     : POSITION;
-    float3 Normal   : NORMAL;
+    float3 Normal       : NORMAL;
+    uint4  JointIndices : JOINTS_0;
+    float4 JointWeights : WEIGHTS_0;
 };
 
 struct PS_IN
@@ -33,10 +41,31 @@ PS_IN VS(VS_IN input)
 {
     PS_IN output;
 	
-	float4 worldPosition = mul(Transform, float4(input.Position, 1));
+    // Unanimated position in modelspace
+    float4 positionRaw = float4(input.Position, 1);
+
+    // Calculate animated position in modelspace
+    
+    float4 position = 
+        mul(SkinningMatrices[input.JointIndices.x], positionRaw) * input.JointWeights.x + 
+        mul(SkinningMatrices[input.JointIndices.y], positionRaw) * input.JointWeights.y + 
+        mul(SkinningMatrices[input.JointIndices.z], positionRaw) * input.JointWeights.z + 
+        mul(SkinningMatrices[input.JointIndices.w], positionRaw) * input.JointWeights.w;
+    
+    float3 normal = 
+        mul(InvTransSkinningMatrices[input.JointIndices.x], input.Normal) * input.JointWeights.x + 
+        mul(InvTransSkinningMatrices[input.JointIndices.y], input.Normal) * input.JointWeights.y + 
+        mul(InvTransSkinningMatrices[input.JointIndices.z], input.Normal) * input.JointWeights.z + 
+        mul(InvTransSkinningMatrices[input.JointIndices.w], input.Normal) * input.JointWeights.w;
+    
+    //position = saturate(position - 1000) + positionRaw;
+    
+    //float4 position = mul(SkinningMatrices[input.JointIndices.x], positionRaw);
+
+	float4 worldPosition = mul(Transform, position);
 	
     output.Position = mul(ViewProjection, worldPosition);
-    output.Normal = mul((float3x3)Transform, input.Normal);
+    output.Normal = mul((float3x3)Transform, normal);
     
     return output;
 }
@@ -46,6 +75,7 @@ float4 PS(PS_IN input) : SV_TARGET
     input.Normal = normalize(input.Normal);
 
     float shading = dot(LightDir, input.Normal);
+    //float shading = dot(LightDir, LightDir) + 1;
     shading = clamp(shading, 0.0f, 1.0f);
 
     return BaseColor * shading;

Sandbox/src/SandboxApp.bf

@@ -10,6 +10,7 @@ using GlitchyEngine.Math;
 using GlitchyEngine.World;
 using System.Collections;
 using GlitchyEngine.Content;
+using GlitchyEngine.Renderer.Animation;
 
 namespace Sandbox
 {
@@ -70,8 +71,6 @@ namespace Sandbox
 		BlendState _alphaBlendState ~ _?.ReleaseRef();
 		BlendState _opaqueBlendState ~ _?.ReleaseRef();
 
-		EffectLibrary _effectLibrary ~ delete _;
-
 		EcsWorld _world = new EcsWorld() ~ delete _;
 
 //		OrthographicCameraController _cameraController ~ delete _;
@@ -87,13 +86,13 @@ namespace Sandbox
 		{
 			_context = Application.Get().Window.Context..AddRef();
 
-			_effectLibrary = new EffectLibrary(_context);
+			var effectLibrary = Application.Get().EffectLibrary;
 
-			_effectLibrary.LoadNoRefInc("content\\Shaders\\basicShader.hlsl");
+			effectLibrary.LoadNoRefInc("content\\Shaders\\basicShader.hlsl");
 
-			_effectLibrary.LoadNoRefInc("content\\Shaders\\testShader.hlsl");
+			effectLibrary.LoadNoRefInc("content\\Shaders\\testShader.hlsl");
 			
-			var textureEffect = _effectLibrary.Load("content\\Shaders\\textureShader.hlsl");
+			var textureEffect = effectLibrary.Load("content\\Shaders\\textureShader.hlsl");
 
 			_depthTarget = new DepthStencilTarget(_context, _context.SwapChain.Width, _context.SwapChain.Height);
 
@@ -209,6 +208,7 @@ namespace Sandbox
 			_cameraController = new .(Application.Get().Window.Context.SwapChain.BackbufferViewport.Width /
 									Application.Get().Window.Context.SwapChain.BackbufferViewport.Height);
 			_cameraController.CameraPosition = .(0, 0, -5);
+			_cameraController.TranslationSpeed = 10;
 
 			TestLoadModel();
 		}
@@ -217,6 +217,10 @@ namespace Sandbox
 
 		List<(Matrix Transform, GeometryBinding Model)> _modelTest = new .() ~ UnloadModelTest!();
 
+		Skeleton Skeleton ~ delete _;
+		AnimationClip Clip ~ delete _;
+		AnimationPlayer AnimationPlayer ~ delete _;
+
 		mixin UnloadModelTest()
 		{
 			for(var entry in _modelTest)
@@ -229,12 +233,20 @@ namespace Sandbox
 
 		void TestLoadModel()
 		{
-			var testEffect = _effectLibrary.Get("testShader");
+			var testEffect = Application.Get().EffectLibrary.Get("testShader");
 
-			ModelLoader.LoadModel("content\\Models\\box.gltf", _context, testEffect, _modelTest);
+			//ModelLoader.LoadModel("content\\Models\\Test\\axisTest.glb", _context, testEffect, _modelTest, out Skeleton, out Clip);
+			//ModelLoader.LoadModel("content\\Models\\RiggedSimple\\RiggedSimple.glb", _context, testEffect, _modelTest, out Skeleton, out Clip);
+			//ModelLoader.LoadModel("content\\Models\\Fox\\Fox_2.glb", _context, testEffect, _modelTest, out Skeleton, out Clip);
+			//ModelLoader.LoadModel("content\\Models\\DancingCylinder\\DancingCylinder.glb", _context, testEffect, _modelTest, out Skeleton, out Clip);
+			//ModelLoader.LoadModel("content\\Models\\Figure\\Figure.gltf", _context, testEffect, _modelTest, out Skeleton, out Clip);
+			ModelLoader.LoadModel("content\\Models\\RiggedFigure\\RiggedFigure.glb", _context, testEffect, _modelTest, out Skeleton, out Clip);
 
 			testEffect.ReleaseRef();
 
+			if(Skeleton != null && Clip != null)
+				AnimationPlayer = new AnimationPlayer(Skeleton, Clip);
+
 			/*
 			CGLTF.Options options = .();
 			CGLTF.Data* data;
@@ -277,8 +289,14 @@ namespace Sandbox
 			}
 		}
 
+		float f = 0.0f;
+
+		bool playAnimation = false;
+		bool drawModel = false;
+
 		public override void Update(GameTime gameTime)
 		{
+			f += (float)gameTime.FrameTime.TotalSeconds;
 
 			_cameraController.Update(gameTime);
 
@@ -296,21 +314,101 @@ namespace Sandbox
 			
 			_opaqueBlendState.Bind();
 
-			var basicEffect = _effectLibrary.Get("basicShader");
+			var basicEffect = Application.Get().EffectLibrary.Get("basicShader");
 			
 			// Model test
 			{
-				_context.SetRasterizerState(_rasterizerStateClockWise);
+				//AnimationPlayer.CurrentClip.Samples[0].JointPose[1].Rotation = .(1, 0, 0, 1)..Normalize();
 
-				var testEffect = _effectLibrary.Get("testShader");
+				Matrix scaling = .Scaling(1f, 1.0f, -1.0f);
-				testEffect.Variables["BaseColor"].SetData(Color.White);
-				testEffect.Variables["LightDir"].SetData(Vector3(-1, 1, -0.5f).Normalized());
 
-				for(var entry in _modelTest)
+				var testEffect = Application.Get().EffectLibrary.Get("testShader");
+
+				if(AnimationPlayer != null)
 				{
-					Renderer.Submit(entry.Model, testEffect, entry.Transform);
+					if(playAnimation)
+						AnimationPlayer.Update(gameTime);
+					else
+					{
+						GameTime gt = new GameTime();
+						AnimationPlayer.Update(gt);
+						delete gt;
+					}
+
+					//_context.SetRasterizerState(_rasterizerStateClockWise);
+
+					int i = 0;
+					for(var globalPose in AnimationPlayer.Pose.GlobalPose)
+					{
+						Joint currentJoint = AnimationPlayer.Skeleton.Joints[i];
+
+						Matrix bindPose = currentJoint.InverseBindPose.Invert();
+
+						// Draw skeleton
+						Matrix mat = AnimationPlayer.SkinningMatricies[i] * bindPose;
+
+						uint8 parentId = currentJoint.ParentID;
+
+						if(parentId != uint8.MaxValue)
+						{
+							Vector3 start = mat.Translation;
+
+							Joint parent = AnimationPlayer.Skeleton.Joints[parentId];
+
+							Matrix parentBindPose = parent.InverseBindPose.Invert();
+
+							Matrix parentMatrix = AnimationPlayer.SkinningMatricies[parentId] * parentBindPose;
+
+							Vector3 end = parentMatrix.Translation;
+
+							Renderer.DrawLine(start, end, .Black, scaling);
+						}
+
+						Renderer.DrawLine(.Zero, Vector3(0.1f, 0, 0), .Red,  scaling * mat);
+						Renderer.DrawLine(.Zero, Vector3(0, 0.1f, 0), .Lime, scaling * mat);
+						Renderer.DrawLine(.Zero, Vector3(0, 0, 0.1f), .Blue, scaling * mat);
+
+						i++;
+					}
+	
+					testEffect.Variables["SkinningMatrices"].SetData(AnimationPlayer.SkinningMatricies);
+					testEffect.Variables["InvTransSkinningMatrices"].SetData(AnimationPlayer.InvTransSkinningMatricies);
+	
+					testEffect.Variables["BaseColor"].SetData(Color.White);
+					testEffect.Variables["LightDir"].SetData(Vector3(1, 1, -0.5f).Normalized());
+	
 				}
 
+				if(drawModel)
+				{
+					for(var entry in _modelTest)
+					{
+						Renderer.Submit(entry.Model, testEffect, .Identity * scaling);//entry.Transform
+					}
+				}
+
+				/*
+				// Draw bind pose
+				for(Joint joint in Skeleton.Joints)
+				{
+					Matrix bindPose = joint.InverseBindPose.Invert();
+
+					if(joint.ParentID != uint8.MaxValue)
+					{
+						Vector3 start = bindPose.Translation;
+
+						Matrix parentBindPose = Skeleton.Joints[joint.ParentID].InverseBindPose.Invert();
+
+						Vector3 end = parentBindPose.Translation;
+
+						Renderer.DrawLine(start, end, .White);
+					}
+
+					Renderer.DrawLine(.Zero, Vector3(0.1f, 0, 0), .Red, bindPose);
+					Renderer.DrawLine(.Zero, Vector3(0, 0.1f, 0), .Lime, bindPose);
+					Renderer.DrawLine(.Zero, Vector3(0, 0, 0.1f), .Blue, bindPose);
+				}
+				*/
 				testEffect.ReleaseRef();
 			}
 			
@@ -342,13 +440,13 @@ namespace Sandbox
 			
 			_checkerMaterial.SetVariable("BaseColor", Color.White);
 
-			Renderer.Submit(_quadGeometryBinding, _checkerMaterial, .Scaling(1.5f));
+			Renderer.Submit(_quadGeometryBinding, _checkerMaterial, Matrix.RotationZ(f) * .Scaling(1.5f));
 			
 			_alphaBlendState.Bind();
 			
 			_logoMaterial.SetVariable("BaseColor", Color.Pink);
 
-			Renderer.Submit(_quadGeometryBinding, _logoMaterial, .Scaling(2f));
+			Renderer.Submit(_quadGeometryBinding, _logoMaterial, .Translation(0, 0, -1) * .Scaling(2f));
 
 			Renderer.EndScene();
 
@@ -370,6 +468,24 @@ namespace Sandbox
 
 		private bool OnImGuiRender(ImGuiRenderEvent e)
 		{
+			ImGui.Begin("Animation");
+
+			if(AnimationPlayer != null)
+			{
+				ImGui.DragFloat("Timestamp", &AnimationPlayer.TimeStamp, 0.01f, -Clip.Duration, Clip.Duration);
+	
+				while(AnimationPlayer.TimeStamp < 0)
+				{
+					AnimationPlayer.TimeStamp += Clip.Duration;
+				}
+	
+				ImGui.Checkbox("Play", &playAnimation);
+			}
+
+			ImGui.Checkbox("Draw Model", &drawModel);
+
+			ImGui.End();
+
 			ImGui.Begin("Test");
 
 			ImGui.ColorEdit3("Square Color", ref _squareColor0);