add from giga-device, new branch added

StgSharp.Common/Graphics/CPUanimation/IImageProvider.cs

@@ -0,0 +1,43 @@
+//-----------------------------------------------------------------------
+//-----------------------------------------------------------------------
+//     file="IImageProvider.cs"
+//     Project: StgSharp
+//     AuthorGroup: Nitload Space
+//     Copyright (c) Nitload Space. All rights reserved.
+//     
+//     Permission is hereby granted, free of charge, to any person 
+//     obtaining a copy of this software and associated documentation 
+//     files (the “Software”), to deal in the Software without restriction, 
+//     including without limitation the rights to use, copy, modify, merge,
+//     publish, distribute, sublicense, and/or sell copies of the Software, 
+//     and to permit persons to whom the Software is furnished to do so, 
+//     subject to the following conditions:
+//     
+//     The above copyright notice and 
+//     this permission notice shall be included in all copies 
+//     or substantial portions of the Software.
+//     
+//     THE SOFTWARE IS PROVIDED “AS IS”, 
+//     WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, 
+//     INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 
+//     FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. 
+//     IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, 
+//     DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, 
+//     ARISING FROM, OUT OF OR IN CONNECTION WITH 
+//     THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+//     
+//-----------------------------------------------------------------------
+//-----------------------------------------------------------------------
+using System;
+using System.Collections.Generic;
+using System.Text;
+
+namespace StgSharp.Graphics
+{
+    public interface IImageProvider
+    {
+
+        Image ProvideImage();
+
+    }
+}

StgSharp.Common/Graphics/CPUanimation/ImageHelper.cs

@@ -0,0 +1,86 @@
+//-----------------------------------------------------------------------
+//-----------------------------------------------------------------------
+//     file="ImageHelper.cs"
+//     Project: StgSharp
+//     AuthorGroup: Nitload Space
+//     Copyright (c) Nitload Space. All rights reserved.
+//     
+//     Permission is hereby granted, free of charge, to any person 
+//     obtaining a copy of this software and associated documentation 
+//     files (the “Software”), to deal in the Software without restriction, 
+//     including without limitation the rights to use, copy, modify, merge,
+//     publish, distribute, sublicense, and/or sell copies of the Software, 
+//     and to permit persons to whom the Software is furnished to do so, 
+//     subject to the following conditions:
+//     
+//     The above copyright notice and 
+//     this permission notice shall be included in all copies 
+//     or substantial portions of the Software.
+//     
+//     THE SOFTWARE IS PROVIDED “AS IS”, 
+//     WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, 
+//     INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 
+//     FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. 
+//     IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, 
+//     DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, 
+//     ARISING FROM, OUT OF OR IN CONNECTION WITH 
+//     THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+//     
+//-----------------------------------------------------------------------
+//-----------------------------------------------------------------------
+using System;
+using System.Collections.Generic;
+using System.ComponentModel;
+using System.Text;
+
+namespace StgSharp.Graphics
+{
+    public static class ImageHelper
+    {
+
+        public static void Resize( Image i, int width, int height, ImageMovement move )
+        {
+            if( i == null ) {
+                throw new ArgumentNullException( nameof( i ) );
+            }
+            if( i.Size == (width, height) ) {
+                return;
+            }
+            if( !Enum.IsDefined( typeof( ImageMovement ), move ) ) {
+                throw new InvalidEnumArgumentException( nameof( move ) );
+            }
+            byte[] oldData = i.Data;
+            i.Data = new byte[width * height * i.PixelSize];
+            i.Height = height;
+            i.Width = width;
+            i.PixelUpdateCount++;
+            switch( move )
+            {
+                case ImageMovement.Discard:
+                    break;
+                case ImageMovement.Top:
+                    break;
+                default:
+                    throw new NotImplementedException();
+            }
+        }
+
+    }
+
+    [Flags]
+    public enum ImageMovement
+    {
+#pragma warning disable CA1008 
+        Discard = 0,
+        #pragma warning restore CA1008 
+        Top = 1,
+        Bottom = 2,
+        Left = 4,
+        Right = 8,
+        TopLeft = Top | Left,
+        BottomLeft = Bottom | Left,
+        TopRight = Top | Right,
+        BottomRight = Bottom | Right,
+
+    }
+}

StgSharp.Common/Graphics/Define/BufferObjectBase.cs

@@ -0,0 +1,89 @@
+//-----------------------------------------------------------------------
+// -----------------------------------------------------------------------
+// file="BufferObjectBase.cs"
+// Project: StgSharp
+// AuthorGroup: Nitload Space
+// Copyright (c) Nitload Space. All rights reserved.
+//     
+// Permission is hereby granted, free of charge, to any person 
+// obtaining a copy of this software and associated documentation 
+// files (the “Software”), to deal in the Software without restriction, 
+// including without limitation the rights to use, copy, modify, merge,
+// publish, distribute, sublicense, and/or sell copies of the Software, 
+// and to permit persons to whom the Software is furnished to do so, 
+// subject to the following conditions:
+//     
+// The above copyright notice and 
+// this permission notice shall be included in all copies 
+// or substantial portions of the Software.
+//     
+// THE SOFTWARE IS PROVIDED “AS IS”, 
+// WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, 
+// INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. 
+// IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, 
+// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, 
+// ARISING FROM, OUT OF OR IN CONNECTION WITH 
+// THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+//     
+// -----------------------------------------------------------------------
+// -----------------------------------------------------------------------
+using StgSharp.Graphics.OpenGL;
+
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace StgSharp.Graphics
+{
+    /// <summary>
+    ///   Interface of all kinds OpenGL BufferHandle objects
+    /// </summary>
+    public abstract class BufferObjectBase : IDisposable
+    {
+
+        protected GlHandle[] _bufferHandle;
+        protected RenderStream binding;
+
+        /// <summary>
+        ///   Get the only handle to one of the Object instance
+        /// </summary>
+        /// <param _label="index">
+        ///
+        /// </param>
+        /// <returns>
+        ///
+        /// </returns>
+        public GlHandle this[int index] => _bufferHandle[index];
+
+        /// <summary>
+        ///   Bind a BufferHandle instance to OpenGL
+        /// </summary>
+        /// <param _label="index">
+        ///   Index of handle of the object in this instance to be bind
+        /// </param>
+        public abstract void Bind(int index);
+
+        public void Dispose()
+        {
+            Dispose(disposing:true);
+            GC.SuppressFinalize(this);
+        }
+
+        /// <inheritdoc />
+        public override string ToString()
+        {
+            return $"This is a {GetType().FullName}, containing {_bufferHandle.Length} buffer handles: {_bufferHandle.ToString()}.";
+        }
+
+        protected abstract void Dispose(bool disposing);
+
+        ~BufferObjectBase()
+        {
+            Dispose(disposing:false);
+        }
+
+    }
+}

StgSharp.Common/Graphics/Image.cs

@@ -0,0 +1,210 @@
+//-----------------------------------------------------------------------
+//-----------------------------------------------------------------------
+//     file="Image.cs"
+//     Project: StgSharp
+//     AuthorGroup: Nitload Space
+//     Copyright (c) Nitload Space. All rights reserved.
+//     
+//     Permission is hereby granted, free of charge, to any person 
+//     obtaining a copy of this software and associated documentation 
+//     files (the “Software”), to deal in the Software without restriction, 
+//     including without limitation the rights to use, copy, modify, merge,
+//     publish, distribute, sublicense, and/or sell copies of the Software, 
+//     and to permit persons to whom the Software is furnished to do so, 
+//     subject to the following conditions:
+//     
+//     The above copyright notice and 
+//     this permission notice shall be included in all copies 
+//     or substantial portions of the Software.
+//     
+//     THE SOFTWARE IS PROVIDED “AS IS”, 
+//     WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, 
+//     INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 
+//     FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. 
+//     IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, 
+//     DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, 
+//     ARISING FROM, OUT OF OR IN CONNECTION WITH 
+//     THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+//     
+//-----------------------------------------------------------------------
+//-----------------------------------------------------------------------
+using StgSharp.Graphics.OpenGL;
+using StgSharp.Internal;
+using StgSharp.Mathematics;
+
+using System;
+using System.Collections.Generic;
+using System.IO;
+using System.Linq;
+using System.Reflection;
+using System.Runtime.CompilerServices;
+using System.Runtime.InteropServices;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace StgSharp.Graphics
+{
+    public class Image : ISSDSerializable, IImageProvider
+    {
+
+        private byte[] _data;
+        private ImageInfo _rawInfo;
+        private int _pixelUpdateCount = 0;
+
+        internal unsafe Image()
+        {
+            _rawInfo = new ImageInfo();
+        }
+
+        internal Image( ImageInfo information )
+        {
+            _rawInfo = information;
+            _data = Array.Empty<byte>();
+
+            //int length = _rawInfo.width * _rawInfo.height * _rawInfo.channel;
+        }
+
+        public (int width, int height) Size
+        {
+            get => (_rawInfo.Width, _rawInfo.Height);
+        }
+
+        public byte[] PixelBuffer
+        {
+            get
+            {
+                if( ( _data.Length == 0 ) || ( _data == null ) )
+                {
+                    GetBytes();
+                    return _data!;
+                }
+                return _data;
+            }
+        }
+
+        public ImageChannel Channel => _rawInfo.Channel;
+
+        /// <summary>
+        ///   Hash code of time pixels updated last time.
+        /// </summary>
+        public int PixelUpdateCount
+        {
+            get => _pixelUpdateCount;
+            internal set => _pixelUpdateCount = value;
+        }
+
+        public int ChannelCount => _rawInfo.ChannelCount;
+
+        public int Height
+        {
+            get => _rawInfo.Height;
+            internal set => _rawInfo.Height = value;
+        }
+
+        public int Width
+        {
+            get => _rawInfo.Width;
+            internal set => _rawInfo.Width = value;
+        }
+
+        public int PixelSize => ImageInfo.GetPixelSize( _rawInfo.pixelLayout, _rawInfo.Channel );
+
+        public PixelChannelLayout PixelLayout
+        {
+            get => _rawInfo.pixelLayout;
+            private set => _rawInfo.pixelLayout = value;
+        }
+
+        public SerializableTypeCode SSDTypeCode => SerializableTypeCode.PixelImage;
+
+        internal ref byte[] Data
+        {
+            get => ref _data;
+        }
+
+        public void FromBytes( byte[] stream ) { }
+
+        public static unsafe Image FromFile( string route, ImageLoader loader )
+        {
+            Image ret = new Image();
+            fixed( ImageInfo* iptr = &ret._rawInfo ) {
+                InternalIO.InternalLoadImage( route, iptr, loader );
+            }
+            return ret;
+        }
+
+        public static Image FromMemory(
+                            (int width, int height) size,
+                            ImageChannel channel,
+                            byte[] stream )
+        {
+            ImageInfo _info = new ImageInfo
+            {
+                Height = size.height,
+                Width = size.width,
+                Channel = channel,
+                StreamPtr = IntPtr.Zero
+            };
+            Image ret = new Image( _info );
+            ret.PixelLayout = PixelChannelLayout.Byte;
+            ret._data = stream;
+            return ret;
+        }
+
+        public static Image FromMemory(
+                            (int width, int height) size,
+                            ImageChannel channel,
+                            PixelChannelLayout layout,
+                            byte[] stream )
+        {
+            ImageInfo _info = new ImageInfo
+            {
+                Height = size.height,
+                Width = size.width,
+                Channel = channel,
+                StreamPtr = IntPtr.Zero
+            };
+            Image ret = new Image( _info );
+            ret.PixelLayout = layout;
+            ret._data = stream;
+            return ret;
+        }
+
+        public unsafe byte[] GetBytes()
+        {
+            if( _data.Length == 0 )
+            {
+                int size = Width * Height * ImageInfo.GetPixelSize( PixelLayout, Channel );
+                _data = new Span<byte>( ( byte* )_rawInfo.StreamPtr, size ).ToArray();
+                fixed( ImageInfo* pptr = &_rawInfo ) {
+                    InternalIO.InternalUnloadImage( pptr );
+                }
+                _rawInfo.StreamPtr = IntPtr.Zero;
+            }
+            return _data;
+        }
+
+        public Image ProvideImage() => this;
+
+        internal static Image FromMemory( ImageInfo info, byte[] data, int operationCount )
+        {
+            return new Image
+            {
+                _rawInfo = info,
+                _data = data,
+                _pixelUpdateCount = operationCount
+            };
+        }
+
+        byte[] ISSDSerializable.GetBytes()
+        {
+            throw new NotImplementedException();
+        }
+
+    }
+}
+
+namespace StgSharp.Graphics.OpenGL
+{
+    public static partial class GlHelper { }
+}

StgSharp.Common/Graphics/ImageInfo.cs

@@ -0,0 +1,141 @@
+using System;
+using System.Collections.Generic;
+using System.Text;
+using System.Runtime.CompilerServices;
+using StgSharp.Graphics.OpenGL;
+using System.Runtime.InteropServices;
+
+
+namespace StgSharp.Graphics
+{
+    [UnmanagedFunctionPointer(CallingConvention.Cdecl, CharSet = CharSet.Ansi)]
+    public delegate IntPtr ImageLoader(
+                                   string name,
+                                   ref int width,
+                                   ref int height,
+                                   ref int definedChannel,
+                                   int desiredChannel);
+
+
+    [StructLayout(LayoutKind.Sequential)]
+    internal struct ImageInfo
+    {
+
+        private ImageChannel channel;
+        private int height;
+        private int width;
+        private IntPtr pixelPtr;
+        internal PixelChannelLayout pixelLayout;
+
+        public ImageChannel Channel
+        {
+            get => channel;
+            set { channel = value; }
+        }
+
+        public int ChannelCount
+        {
+            get => GetChannelCount(channel);
+        }
+
+        public int Height
+        {
+            get => height;
+            set => height = value;
+        }
+
+        public int StreamSize
+        {
+            get => width * height * GetPixelSize(
+                pixelLayout, channel);
+        }
+
+        public int Width
+        {
+            get => width;
+            set => width = value;
+        }
+
+        public IntPtr StreamPtr
+        {
+            get => pixelPtr;
+            internal set => pixelPtr = value;
+        }
+
+        public override int GetHashCode()
+        {
+            int hash = 17;
+            hash = hash * 17 + width;
+            hash = hash * 17 + height;
+            hash = hash * 17 + (int)channel;
+            return hash;
+        }
+
+        public override string ToString()
+        {
+            return $"{channel}\t{width}\t{height}\t{(ulong)StreamPtr}";
+        }
+
+
+        internal static int GetChannelCount(ImageChannel channel)
+        {
+            return channel switch
+            {
+                ImageChannel.SingleColor => 1,
+                ImageChannel.DoubleColor => 2,
+                ImageChannel.TripleColor => 3,
+                ImageChannel.WithAlphaChannel => 4,
+                _ => throw new InvalidCastException(
+                    "Unknown color channel decoding setting.")
+            };
+        }
+
+        internal static int GetPixelSize(
+            PixelChannelLayout layout,
+            ImageChannel channel)
+        {
+            return layout switch
+            {
+                PixelChannelLayout.UByte => sizeof(byte) * GetChannelCount(
+                    channel),
+                PixelChannelLayout.Byte => sizeof(byte) * GetChannelCount(
+                    channel),
+                PixelChannelLayout.UShort => sizeof(short) * GetChannelCount(
+                    channel),
+                PixelChannelLayout.Short => sizeof(short) * GetChannelCount(
+                    channel),
+                PixelChannelLayout.UInt => sizeof(int) * GetChannelCount(
+                    channel),
+                PixelChannelLayout.Int => sizeof(int) * GetChannelCount(
+                    channel),
+                PixelChannelLayout.Float => sizeof(float) * GetChannelCount(
+                    channel),
+                PixelChannelLayout.UByte332 => sizeof(byte),
+                PixelChannelLayout.UByte233Rev => sizeof(byte),
+                PixelChannelLayout.UShort565 => sizeof(short),
+                PixelChannelLayout.UShort565Rev => sizeof(short),
+                PixelChannelLayout.UShort4444 => sizeof(short),
+                PixelChannelLayout.UShort4444Rev => sizeof(short),
+                PixelChannelLayout.UShort5551 => sizeof(short),
+                PixelChannelLayout.UShort1555Rev => sizeof(short),
+                PixelChannelLayout.UInt8888 => sizeof(int),
+                PixelChannelLayout.UInt8888Rev => sizeof(int),
+                PixelChannelLayout.UInt1010102 => sizeof(int),
+                PixelChannelLayout.UInt2101010Rev => sizeof(int),
+                _ => throw new ArgumentException("Unknown layout type"),
+            };
+        }
+
+    }
+
+    public enum ImageChannel : uint
+    {
+
+        SingleColor = glConst.RED,
+        DoubleColor = glConst.RG,
+        TripleColor = glConst.RGB,
+        WithAlphaChannel = glConst.RGBA,
+
+    }
+
+}

StgSharp.Common/Graphics/OpenGL/Buffer/AutoTexture.cs

@@ -0,0 +1,162 @@
+//-----------------------------------------------------------------------
+//-----------------------------------------------------------------------
+//     file="AutoTexture.cs"
+//     Project: StgSharp
+//     AuthorGroup: Nitload Space
+//     Copyright (c) Nitload Space. All rights reserved.
+//     
+//     Permission is hereby granted, free of charge, to any person 
+//     obtaining a copy of this software and associated documentation 
+//     files (the “Software”), to deal in the Software without restriction, 
+//     including without limitation the rights to use, copy, modify, merge,
+//     publish, distribute, sublicense, and/or sell copies of the Software, 
+//     and to permit persons to whom the Software is furnished to do so, 
+//     subject to the following conditions:
+//     
+//     The above copyright notice and 
+//     this permission notice shall be included in all copies 
+//     or substantial portions of the Software.
+//     
+//     THE SOFTWARE IS PROVIDED “AS IS”, 
+//     WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, 
+//     INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 
+//     FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. 
+//     IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, 
+//     DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, 
+//     ARISING FROM, OUT OF OR IN CONNECTION WITH 
+//     THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+//     
+//-----------------------------------------------------------------------
+//-----------------------------------------------------------------------
+using StgSharp.Commom.Collections;
+using System;
+using System.Collections.Generic;
+using System.Diagnostics.CodeAnalysis;
+using System.Linq;
+using System.Runtime.CompilerServices;
+using System.Text;
+
+using System.Threading.Tasks;
+
+namespace StgSharp.Graphics.OpenGL
+{
+    /// <summary>
+    ///   A collection of a sets of OpenGL textures. The collection can automatically select one of
+    ///   the  texture with minimum costs to upgrade pixels to BufferHandle. Usually <see
+    ///   cref="AutoTextureGL" /> is used for <see cref="IImageProvider" /> loading, but not for
+    ///   target of  <see cref="OpenGLFunction.FrameBufferTexture2d(FrameBufferTarget, uint,
+    ///   Texture2DTarget, GlHandle, int)" />.
+    /// </summary>
+    public sealed class AutoTextureGL
+    {
+
+        private TextureProperty[] propertyCache;
+        private BidirectionalDictionary<Image, int> imageIndexMap = new BidirectionalDictionary<Image, int>(
+            );
+        private Dictionary<Image, int> imageUpdateIndex = new Dictionary<Image, int>();
+
+        private int _size, _currentIndex;
+        private LinkedList<int> usedTextureIndex;
+        private Queue<int> unusedTextureUnitIndex;
+        private TextureGL texturePackage;
+
+        private TextureProperty _textureProperty;
+
+        private AutoTextureGL( TextureGL texture )
+        {
+            texturePackage = texture;
+            _size = texture.Count;
+            imageIndexMap = new BidirectionalDictionary<Image, int>();
+            unusedTextureUnitIndex = new Queue<int>( Enumerable.Range( 0, _size ) );
+            usedTextureIndex = new LinkedList<int>();
+            propertyCache = new TextureProperty[_size];
+        }
+
+        public AutoTextureGL( int textureObjectSize, [NotNull]glRender binding )
+        {
+            this._size = textureObjectSize;
+            imageIndexMap = new BidirectionalDictionary<Image, int>();
+            texturePackage = new TextureGL( textureObjectSize, binding );
+            unusedTextureUnitIndex = new Queue<int>( Enumerable.Range( 0, _size ) );
+            usedTextureIndex = new LinkedList<int>();
+            propertyCache = new TextureProperty[_size];
+        }
+
+        public TextureProperty DefaultTextureProperty
+        {
+            get => _textureProperty;
+            set => _textureProperty = value;
+        }
+
+        private OpenGLFunction GL
+        {
+            get => texturePackage.GL;
+        }
+
+        [MethodImpl( MethodImplOptions.AggressiveInlining )]
+        public void SelectTextureAndBind( Image i )
+        {
+            TextureProperty property = _textureProperty;
+
+            SelectTextureAndBind( i, property );
+        }
+
+        public void SelectTextureAndBind( [NotNull]Image i, TextureProperty property )
+        {
+            //usable texture with image match
+            if( imageIndexMap.TryGetValue( i, out int index ) )
+            {
+                //prop setting match
+                if( propertyCache[ index ] == property )
+                {
+                    _currentIndex = index;                          //GL.Assert(true);
+                    texturePackage.Bind2D( index );                   //GL.Assert(true);
+                    if( i.PixelUpdateCount != imageUpdateIndex[ i ] )
+                    {
+                        texturePackage.LoadTexture( index, i );       //GL.Assert(true);
+                    }
+                } else
+                {
+                    _currentIndex = index;                          //GL.Assert(true);
+                    texturePackage.Bind2D( index );                   //GL.Assert(true);
+                    texturePackage.Set2dProperty( index, property );  //GL.Assert(true);
+                    if( i.PixelUpdateCount != imageUpdateIndex[ i ] )
+                    {
+                        texturePackage.LoadTexture( index, i );       //GL.Assert(true);
+                    }
+                }
+            } else
+            {
+                if( unusedTextureUnitIndex.TryDequeue( out int newIndex ) )
+                {
+                    //has extra unused texture object
+                    imageIndexMap.Add( i, index );
+                    texturePackage.Bind2D( index );
+                    texturePackage.Set2dProperty( index, property );
+                    texturePackage.LoadTexture( index, i );
+                    usedTextureIndex.AddLast( newIndex );
+                    propertyCache[ newIndex ] = property;
+                    imageUpdateIndex[ i ] = i.PixelUpdateCount;
+                } else
+                {
+                    //recycle from current
+                    int reusedIndex = usedTextureIndex.First!.Value;
+                    usedTextureIndex.RemoveFirst();
+                    usedTextureIndex.AddLast( reusedIndex );
+                    imageIndexMap[ i ] = reusedIndex;
+                    propertyCache[ newIndex ] = property;
+                    imageUpdateIndex[ i ] = i.PixelUpdateCount;
+                }
+            }
+        }
+
+        public static AutoTextureGL ToAuto( [NotNull]TextureGL texture )
+        {
+            if( texture.IndexOfCurrentTexture != -1 ) {
+                throw new InvalidOperationException( "Texture to be converted has been editted." );
+            }
+            return new AutoTextureGL( texture );
+        }
+
+    }
+}

StgSharp.Common/Graphics/OpenGL/Buffer/EBO.cs

@@ -0,0 +1,86 @@
+//-----------------------------------------------------------------------
+// -----------------------------------------------------------------------
+// file="EBO.cs"
+// Project: StgSharp
+// AuthorGroup: Nitload Space
+// Copyright (c) Nitload Space. All rights reserved.
+//     
+// Permission is hereby granted, free of charge, to any person 
+// obtaining a copy of this software and associated documentation 
+// files (the “Software”), to deal in the Software without restriction, 
+// including without limitation the rights to use, copy, modify, merge,
+// publish, distribute, sublicense, and/or sell copies of the Software, 
+// and to permit persons to whom the Software is furnished to do so, 
+// subject to the following conditions:
+//     
+// The above copyright notice and 
+// this permission notice shall be included in all copies 
+// or substantial portions of the Software.
+//     
+// THE SOFTWARE IS PROVIDED “AS IS”, 
+// WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, 
+// INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. 
+// IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, 
+// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, 
+// ARISING FROM, OUT OF OR IN CONNECTION WITH 
+// THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+//     
+// -----------------------------------------------------------------------
+// -----------------------------------------------------------------------
+using StgSharp.Graphics;
+using StgSharp.Graphics.OpenGL;
+using StgSharp.Internal.OpenGL;
+using StgSharp.Mathematics;
+
+using System;
+using System.Collections.Generic;
+using System.Numerics;
+using System.Runtime.CompilerServices;
+using System.Runtime.InteropServices;
+using System.Text;
+
+namespace StgSharp.Graphics.OpenGL
+{
+    /// <summary>
+    ///   A collection of handle to Element BufferHandle Object in OpenglFunc. Each <see
+    ///   langword="uint" /> value indexed from instance of this class this is the only handle to
+    ///   one Element BufferHandle Object.
+    /// </summary>
+    public sealed unsafe class ElementBuffer : GlBufferObjectBase
+    {
+
+        internal ElementBuffer(int n, glRender binding)
+            : base(binding)
+        {
+            _bufferHandle = GL.GenBuffers(n);
+        }
+
+        public sealed override void Bind(int index)
+        {
+            GL.BindBuffer(BufferType.ElementArrayBuffer, _bufferHandle[index]);
+        }
+
+        public void SetValue<T>(int index, T[] bufferArray, BufferUsage usage)
+            where T: unmanaged, INumber<T>
+        {
+            GL.BindBuffer(BufferType.ElementArrayBuffer, _bufferHandle[index]);
+            GL.SetBufferData<T>(BufferType.ElementArrayBuffer, bufferArray, usage);
+        }
+
+        public void SetValue<T>(int index, ReadOnlySpan<T> bufferSpan, BufferUsage usage)
+            where T: unmanaged, INumber<T>
+        {
+            GL.BindBuffer(BufferType.ElementArrayBuffer, _bufferHandle[index]);
+            GL.SetBufferData<T>(BufferType.ElementArrayBuffer, bufferSpan, usage);
+        }
+
+        protected sealed override void Dispose(bool disposing)
+        {
+            if (disposing) {
+                GL.DeleteBuffers(_bufferHandle);
+            }
+        }
+
+    }
+}

StgSharp.Common/Graphics/OpenGL/Buffer/FBO.cs

@@ -0,0 +1,108 @@
+//-----------------------------------------------------------------------
+// -----------------------------------------------------------------------
+// file="FBO.cs"
+// Project: StgSharp
+// AuthorGroup: Nitload Space
+// Copyright (c) Nitload Space. All rights reserved.
+//     
+// Permission is hereby granted, free of charge, to any person 
+// obtaining a copy of this software and associated documentation 
+// files (the “Software”), to deal in the Software without restriction, 
+// including without limitation the rights to use, copy, modify, merge,
+// publish, distribute, sublicense, and/or sell copies of the Software, 
+// and to permit persons to whom the Software is furnished to do so, 
+// subject to the following conditions:
+//     
+// The above copyright notice and 
+// this permission notice shall be included in all copies 
+// or substantial portions of the Software.
+//     
+// THE SOFTWARE IS PROVIDED “AS IS”, 
+// WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, 
+// INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. 
+// IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, 
+// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, 
+// ARISING FROM, OUT OF OR IN CONNECTION WITH 
+// THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+//     
+// -----------------------------------------------------------------------
+// -----------------------------------------------------------------------
+using StgSharp.Graphics.OpenGL;
+
+using System;
+using System.Collections.Generic;
+using System.Diagnostics;
+using System.Linq;
+using System.Runtime.CompilerServices;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace StgSharp.Graphics.OpenGL
+{
+    #pragma warning disable CA1008 
+    #pragma warning disable CA1028 
+    public enum FrameBufferTarget : uint
+    #pragma warning restore CA1028 
+    #pragma warning restore CA1008 
+    {
+
+        Read = glConst.READ_FRAMEBUFFER,
+        All = glConst.FRAMEBUFFER,
+        Draw = glConst.DRAW_FRAMEBUFFER,
+
+    }
+
+    public sealed class FrameBuffer : GlBufferObjectBase
+    {
+
+        internal unsafe FrameBuffer(int count, glRender binding)
+            : base(binding)
+        {
+            _bufferHandle = GL.GenFrameBuffers(count);
+        }
+
+        /// <summary>
+        ///   Bind the frame BufferHandle object with _label frame BufferHandle to the frame
+        ///   BufferHandle target specified by target. <see langword="FrameBufferTarget.All" /> will
+        ///   be set as default target.
+        /// </summary>
+        /// <param _label="index">
+        ///   Index of object to be binded in handle set
+        /// </param>
+        [MethodImpl(MethodImplOptions.AggressiveInlining)]
+        public override unsafe void Bind(int index)
+        {
+            GL.BindFrameBuffer(FrameBufferTarget.All, _bufferHandle[index]);
+        }
+
+        /// <summary>
+        ///   Bind the frame BufferHandle object with _label frame BufferHandle to the frame
+        ///   BufferHandle target specified by target. Target of this frame BufferHandle should be
+        ///   set manually.
+        /// </summary>
+        /// <param _label="target">
+        ///   The frame BufferHandle target of the binding operation.
+        /// </param>
+        /// <param _label="index">
+        ///   Index of object to be binded in handle set
+        /// </param>
+        [MethodImpl(MethodImplOptions.AggressiveInlining)]
+        public unsafe void Bind(FrameBufferTarget target, int index)
+        {
+            GL.BindFrameBuffer(target, _bufferHandle[index]);
+        }
+
+        [MethodImpl(MethodImplOptions.AggressiveInlining)]
+        public static void BindNull()
+        {
+            OpenGLFunction.CurrentGL.BindFrameBuffer(FrameBufferTarget.All, GlHandle.Zero);
+        }
+
+        protected override void Dispose(bool disposing)
+        {
+            throw new NotImplementedException();
+        }
+
+    }
+}

StgSharp.Common/Graphics/OpenGL/Buffer/GLBufferObjectBase.cs

@@ -0,0 +1,53 @@
+//-----------------------------------------------------------------------
+//-----------------------------------------------------------------------
+//     file="GLBufferObjectBase.cs"
+//     Project: StgSharp
+//     AuthorGroup: Nitload Space
+//     Copyright (c) Nitload Space. All rights reserved.
+//     
+//     Permission is hereby granted, free of charge, to any person 
+//     obtaining a copy of this software and associated documentation 
+//     files (the “Software”), to deal in the Software without restriction, 
+//     including without limitation the rights to use, copy, modify, merge,
+//     publish, distribute, sublicense, and/or sell copies of the Software, 
+//     and to permit persons to whom the Software is furnished to do so, 
+//     subject to the following conditions:
+//     
+//     The above copyright notice and 
+//     this permission notice shall be included in all copies 
+//     or substantial portions of the Software.
+//     
+//     THE SOFTWARE IS PROVIDED “AS IS”, 
+//     WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, 
+//     INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 
+//     FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. 
+//     IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, 
+//     DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, 
+//     ARISING FROM, OUT OF OR IN CONNECTION WITH 
+//     THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+//     
+//-----------------------------------------------------------------------
+//-----------------------------------------------------------------------
+using StgSharp.Graphics.OpenGL;
+
+using System;
+using System.Collections.Generic;
+using System.Text;
+
+namespace StgSharp.Graphics.OpenGL
+{
+    public abstract class GlBufferObjectBase : BufferObjectBase
+    {
+
+        private readonly glRender _contextBinding;
+
+        protected GlBufferObjectBase( glRender contextBinding )
+        {
+            binding = contextBinding;
+            _contextBinding = contextBinding;
+        }
+
+        protected OpenGLFunction GL => _contextBinding.GL;
+
+    }
+}

StgSharp.Common/Graphics/OpenGL/Buffer/RBO.cs

@@ -0,0 +1,71 @@
+//-----------------------------------------------------------------------
+//-----------------------------------------------------------------------
+//     file="RBO.cs"
+//     Project: StgSharp
+//     AuthorGroup: Nitload Space
+//     Copyright (c) Nitload Space. All rights reserved.
+//     
+//     Permission is hereby granted, free of charge, to any person 
+//     obtaining a copy of this software and associated documentation 
+//     files (the “Software”), to deal in the Software without restriction, 
+//     including without limitation the rights to use, copy, modify, merge,
+//     publish, distribute, sublicense, and/or sell copies of the Software, 
+//     and to permit persons to whom the Software is furnished to do so, 
+//     subject to the following conditions:
+//     
+//     The above copyright notice and 
+//     this permission notice shall be included in all copies 
+//     or substantial portions of the Software.
+//     
+//     THE SOFTWARE IS PROVIDED “AS IS”, 
+//     WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, 
+//     INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 
+//     FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. 
+//     IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, 
+//     DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, 
+//     ARISING FROM, OUT OF OR IN CONNECTION WITH 
+//     THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+//     
+//-----------------------------------------------------------------------
+//-----------------------------------------------------------------------
+using StgSharp.Graphics.OpenGL;
+
+using System;
+using System.Collections.Generic;
+using System.Security.Principal;
+using System.Text;
+
+namespace StgSharp.Graphics.OpenGL
+{
+    public sealed class RenderBuffer : GlBufferObjectBase
+    {
+
+        public RenderBuffer( int count, glRender binding )
+            : base( binding )
+        {
+            _bufferHandle = GL.GenRenderBuffer( count );
+        }
+
+        public override void Bind( int index )
+        {
+            GL.BindRenderBuffer( this[ index ] );
+        }
+
+        public void Store( RenderBufferInternalFormat format, (int width, int height) size )
+        {
+            if( ( size.width > binding.Width ) || ( size.height > binding.Height ) ) {
+                World.LogWarning( "FrameBuffer is larger than current canvas binding" );
+            }
+        }
+
+        protected override void Dispose( bool disposing )
+        {
+            foreach( GlHandle item in _bufferHandle )
+            {
+                Console.WriteLine( "removing a render buffer" );
+                GL.DeleteRenderBuffer( item );
+            }
+        }
+
+    }
+}

StgSharp.Common/Graphics/OpenGL/Buffer/TextureGL.cs

@@ -0,0 +1,287 @@
+//-----------------------------------------------------------------------
+//-----------------------------------------------------------------------
+//     file="TextureGL.cs"
+//     Project: StgSharp
+//     AuthorGroup: Nitload Space
+//     Copyright (c) Nitload Space. All rights reserved.
+//     
+//     Permission is hereby granted, free of charge, to any person 
+//     obtaining a copy of this software and associated documentation 
+//     files (the “Software”), to deal in the Software without restriction, 
+//     including without limitation the rights to use, copy, modify, merge,
+//     publish, distribute, sublicense, and/or sell copies of the Software, 
+//     and to permit persons to whom the Software is furnished to do so, 
+//     subject to the following conditions:
+//     
+//     The above copyright notice and 
+//     this permission notice shall be included in all copies 
+//     or substantial portions of the Software.
+//     
+//     THE SOFTWARE IS PROVIDED “AS IS”, 
+//     WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, 
+//     INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 
+//     FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. 
+//     IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, 
+//     DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, 
+//     ARISING FROM, OUT OF OR IN CONNECTION WITH 
+//     THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+//     
+//-----------------------------------------------------------------------
+//-----------------------------------------------------------------------
+using StgSharp.HighPerformance;
+
+using System;
+using System.Diagnostics.CodeAnalysis;
+using System.Linq;
+using System.Runtime.CompilerServices;
+using System.Runtime.InteropServices;
+
+namespace StgSharp.Graphics.OpenGL
+{
+    public sealed unsafe class TextureGL
+    {
+
+        private int currentEditingTextureIndex;
+
+        private OpenGLFunction _gl;
+        internal GlHandle[] _textureHandle;
+
+        internal TextureGL( int count, glRender binding )
+        {
+            //sourceList = new Image[count];
+            this._gl = binding.GL;
+            _textureHandle = _gl.GenTextures( count );
+        }
+
+        public GlHandle this[ int index ]
+        {
+            get => _textureHandle[ index ];
+        }
+
+        public int Count
+        {
+            get => _textureHandle.Length;
+        }
+
+        //internal Image[] sourceList;
+
+        public int IndexOfCurrentTexture
+        {
+            get => currentEditingTextureIndex;
+        }
+
+        internal OpenGLFunction GL => _gl;
+
+        public void ActivateAs( TextureUnit unit )
+        {
+            _gl.ActiveTextureUnit( ( uint )unit );
+        }
+
+        public void Bind2D( int index )
+        {
+            currentEditingTextureIndex = index;
+            _gl.BindTexture( glConst.TEXTURE_2D, _textureHandle[ index ] );
+        }
+
+        /// <summary>
+        ///   Load an <see cref="Image" /> to certain texture.
+        /// </summary>
+        /// <param _label="index">
+        ///
+        /// </param>
+        /// <param _label="i">
+        ///
+        /// </param>
+        public unsafe void LoadTexture( int index, Image i )
+        {
+            byte[] handle = i.PixelBuffer;
+            _gl.TextureImage2d(
+                Texture2DTarget.Texture2D, 0, i.Channel, ( uint )i.Width, ( uint )i.Height,
+                i.Channel, i.PixelLayout, pixels: handle );
+            _gl.GenerateMipmap( Texture2DTarget.Texture2D );
+        }
+
+        #region texture setting
+
+        [MethodImpl( MethodImplOptions.AggressiveInlining )]
+        public void Set2dFilterProperty(
+                    int index,
+                    TextureFilter onMinify,
+                    TextureFilter onMagnify )
+        {
+            #if DEBUG
+            if( index != currentEditingTextureIndex )
+            {
+                throw new InvalidOperationException(
+                    "Texture to be editted is not the one being activated." );
+            }
+            #endif
+            _gl.TextureParameter( glConst.TEXTURE_2D, glConst.TEXTURE_MIN_FILTER, ( int )onMinify );
+            _gl.TextureParameter( glConst.TEXTURE_2D, glConst.TEXTURE_MAG_FILTER,
+                                  ( int )onMagnify );
+        }
+
+        [MethodImpl( MethodImplOptions.AggressiveInlining )]
+        public void Set2dWrapProperty(
+                    int index,
+                    TextureWrap onHorizontial,
+                    TextureWrap onVertical )
+        {
+            #if DEBUG
+            if( index != currentEditingTextureIndex )
+            {
+                throw new InvalidOperationException(
+                    "Texture to be editted is not the one being activated." );
+            }
+            #endif
+            _gl.TextureParameter( glConst.TEXTURE_2D, glConst.TEXTURE_WRAP_S,
+                                  ( int )onHorizontial );
+            _gl.TextureParameter( glConst.TEXTURE_2D, glConst.TEXTURE_WRAP_T, ( int )onVertical );
+        }
+
+        [MethodImpl( MethodImplOptions.AggressiveInlining )]
+        public void Set2dProperty( int index, TextureProperty property )
+        {
+            Set2dFilterProperty( index, property.FilterOnMinify, property.FilterOnMagnify );
+            Set2dWrapProperty( index, property.WrapOnHorizontial, property.WrapOnVertical );
+        }
+
+        #endregion texture setting
+    }
+
+    [StructLayout( LayoutKind.Explicit )]
+    public struct TextureProperty
+    {
+
+        [FieldOffset( 0 )] private M128 mask;
+        [FieldOffset( 0 )] private TextureFilter mag;
+        [FieldOffset( 4 )] private TextureFilter min;
+
+        [FieldOffset( 8 )] private  TextureWrap hori;
+        [FieldOffset( 12 )] private TextureWrap vert;
+
+        public TextureProperty(
+               TextureFilter onMagnify,
+               TextureFilter onMinify,
+               TextureWrap onHorizontial,
+               TextureWrap onVertical )
+        {
+            FilterOnMagnify = onMagnify;
+            FilterOnMinify = onMinify;
+            WrapOnHorizontial = onHorizontial;
+            WrapOnVertical = onVertical;
+        }
+
+        public TextureFilter FilterOnMagnify
+        {
+            get => mag;
+            set => mag = value;
+        }
+
+        public TextureFilter FilterOnMinify
+        {
+            get => min;
+            set => min = value;
+        }
+
+        public TextureWrap WrapOnHorizontial
+        {
+            get => hori;
+            set => hori = value;
+        }
+
+        public TextureWrap WrapOnVertical
+        {
+            get => vert;
+            set => vert = value;
+        }
+
+        public override bool Equals( [NotNullWhen( true )] object obj )
+        {
+            return base.Equals( obj );
+        }
+
+        public override int GetHashCode()
+        {
+            return HashCode.Combine(
+                FilterOnMagnify, FilterOnMagnify, WrapOnHorizontial, WrapOnVertical );
+        }
+
+        public override string ToString()
+        {
+            return $"FilterOnMagnify:{FilterOnMagnify}, " + $"FilterOnMagnify:{FilterOnMagnify}, " + $"WrapOnHorizontial:{WrapOnHorizontial}, " + $"WrapOnVertical:{WrapOnVertical}";
+        }
+
+        public static bool operator !=( TextureProperty left, TextureProperty right )
+        {
+            return left.mask != right.mask;
+        }
+
+        public static bool operator ==( TextureProperty left, TextureProperty right )
+        {
+            return left.mask == right.mask;
+        }
+
+        public static implicit operator TextureProperty(
+                                        (
+            TextureFilter onMagnify, TextureFilter onMinify,
+            TextureWrap onHorizontial, TextureWrap onVertical
+            ) propertyValueTuple )
+        {
+            return new TextureProperty(
+                propertyValueTuple.onMagnify, propertyValueTuple.onMinify,
+                propertyValueTuple.onHorizontial, propertyValueTuple.onVertical );
+        }
+
+    }
+
+    #pragma warning disable CA1008
+    public enum TextureFilter
+    #pragma warning restore CA1008
+    {
+
+        Nearest = glConst.NEAREST,
+        Linear = glConst.LINEAR,
+        NearestLinearMipmap = glConst.NEAREST_MIPMAP_LINEAR,
+        LinearLinearMipmap = glConst.LINEAR_MIPMAP_LINEAR,
+        NearestNearestMipmap = glConst.NEAREST_MIPMAP_NEAREST,
+        LinearNearestMipmap = glConst.LINEAR_MIPMAP_NEAREST,
+
+    }
+
+    #pragma warning disable CA1008
+    public enum TextureUnit
+    #pragma warning restore CA1008
+    {
+
+        Unit0 = glConst.TEXTURE0,
+        Unit1 = glConst.TEXTURE1,
+        Unit2 = glConst.TEXTURE2,
+        Unit3 = glConst.TEXTURE3,
+        Unit4 = glConst.TEXTURE4,
+        Unit5 = glConst.TEXTURE5,
+        Unit6 = glConst.TEXTURE6,
+        Unit7 = glConst.TEXTURE7,
+        Unit8 = glConst.TEXTURE8,
+        Unit9 = glConst.TEXTURE9,
+        Unit10 = glConst.TEXTURE10,
+        Unit11 = glConst.TEXTURE11,
+        Unit12 = glConst.TEXTURE12,
+        Unit13 = glConst.TEXTURE13,
+        Unit14 = glConst.TEXTURE14,
+        Unit15 = glConst.TEXTURE15,
+
+    }
+
+    #pragma warning disable CA1008 
+    public enum TextureWrap
+    #pragma warning restore CA1008 
+    {
+
+        Repeat = glConst.REPEAT,
+        MirroredRepeat = glConst.MIRRORED_REPEAT,
+        ClampToEdge = glConst.CLAMP_TO_EDGE,
+        ClampToBorder = glConst.CLAMP_TO_BORDER,
+
+    }
+}

StgSharp.Common/Graphics/OpenGL/Buffer/VAO.cs

@@ -0,0 +1,80 @@
+//-----------------------------------------------------------------------
+//-----------------------------------------------------------------------
+//     file="VAO.cs"
+//     Project: StepVisualizer
+//     AuthorGroup: Nitload Space
+//     Copyright (c) Nitload Space. All rights reserved.
+//     
+//     Permission is hereby granted, free of charge, to any person 
+//     obtaining a copy of this software and associated documentation 
+//     files (the “Software”), to deal in the Software without restriction, 
+//     including without limitation the rights to use, copy, modify, merge,
+//     publish, distribute, sublicense, and/or sell copies of the Software, 
+//     and to permit persons to whom the Software is furnished to do so, 
+//     subject to the following conditions:
+//     
+//     The above copyright notice and 
+//     this permission notice shall be included in all copies 
+//     or substantial portions of the Software.
+//     
+//     THE SOFTWARE IS PROVIDED “AS IS”, 
+//     WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, 
+//     INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 
+//     FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. 
+//     IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, 
+//     DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, 
+//     ARISING FROM, OUT OF OR IN CONNECTION WITH 
+//     THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+//     
+//-----------------------------------------------------------------------
+//-----------------------------------------------------------------------
+using System;
+using System.Collections.Generic;
+using System.Runtime.CompilerServices;
+using System.Text;
+
+namespace StgSharp.Graphics.OpenGL
+{
+    public sealed unsafe class VertexArray : GlBufferObjectBase
+    {
+
+        internal VertexArray( int n, glRender binding )
+            : base( binding )
+        {
+            _bufferHandle = GL.GenVertexArrays( n );
+        }
+
+        [MethodImpl( MethodImplOptions.AggressiveInlining )]
+        public override sealed void Bind( int index )
+        {
+            GL.BindVertexArray( _bufferHandle[ index ] );
+        }
+
+        [MethodImpl( MethodImplOptions.AggressiveInlining )]
+        public static void BindNull()
+        {
+            OpenGLFunction.CurrentGL.BindVertexArray( GlHandle.Zero );
+        }
+
+        [MethodImpl( MethodImplOptions.AggressiveInlining )]
+        public void SetVertexAttribute(
+                    uint attributeIndex,
+                    int vertexLength,
+                    TypeCode dataType,
+                    bool isNomalized,
+                    uint stride,
+                    int pointer )
+        {
+            GL.SetVertexAttribute(
+                attributeIndex, vertexLength, dataType, isNomalized, stride, pointer );
+        }
+
+        protected override sealed void Dispose( bool disposing )
+        {
+            if( disposing ) {
+                GL.DeleteVertexArrays( _bufferHandle );
+            }
+        }
+
+    }
+}

StgSharp.Common/Graphics/OpenGL/Buffer/VBO.cs

@@ -0,0 +1,185 @@
+//-----------------------------------------------------------------------
+// -----------------------------------------------------------------------
+// file="VBO.cs"
+// Project: StgSharp
+// AuthorGroup: Nitload Space
+// Copyright (c) Nitload Space. All rights reserved.
+//     
+// Permission is hereby granted, free of charge, to any person 
+// obtaining a copy of this software and associated documentation 
+// files (the “Software”), to deal in the Software without restriction, 
+// including without limitation the rights to use, copy, modify, merge,
+// publish, distribute, sublicense, and/or sell copies of the Software, 
+// and to permit persons to whom the Software is furnished to do so, 
+// subject to the following conditions:
+//     
+// The above copyright notice and 
+// this permission notice shall be included in all copies 
+// or substantial portions of the Software.
+//     
+// THE SOFTWARE IS PROVIDED “AS IS”, 
+// WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, 
+// INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. 
+// IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, 
+// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, 
+// ARISING FROM, OUT OF OR IN CONNECTION WITH 
+// THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+//     
+// -----------------------------------------------------------------------
+// -----------------------------------------------------------------------
+using StgSharp.Mathematics;
+
+using System;
+using System.Collections.Generic;
+using System.Net.Security;
+using System.Numerics;
+using System.Reflection;
+using System.Runtime.CompilerServices;
+using System.Runtime.InteropServices;
+using System.Text;
+
+namespace StgSharp.Graphics.OpenGL
+{
+    public sealed unsafe class VertexBuffer : GlBufferObjectBase
+    {
+
+        internal VertexBuffer(int n, glRender binding)
+            : base(binding)
+        {
+            _bufferHandle = GL.GenBuffers(n);
+        }
+
+        public sealed override void Bind(int index)
+        {
+            GL.BindBuffer(BufferType.ArrayBuffer, _bufferHandle[index]);
+        }
+
+        /// <summary>
+        ///
+        /// </summary>
+        [MethodImpl(MethodImplOptions.AggressiveInlining)]
+        public void Unbind()
+        {
+            GL.BindBuffer(BufferType.ArrayBuffer, GlHandle.Zero);
+        }
+
+        /// <summary>
+        ///   Set _data to current vertex BufferHandle object
+        /// </summary>
+        /// <typeparam _label="TItem">
+        ///   Type of bufferData
+        /// </typeparam>
+        /// <param _label="index">
+        ///   Index to find certain VBO in this instance
+        /// </param>
+        /// <param _label="bufferData">
+        ///   Data to write in
+        /// </param>
+        /// <param _label="usage">
+        ///   How OpenGL use these _data, defined by <see cref="BufferUsage" />
+        /// </param>
+        public void WriteMatrixData<T>(int index, T bufferData, BufferUsage usage)
+            where T: unmanaged, IMatrix<T>
+        {
+            GL.BindBuffer(BufferType.ArrayBuffer, _bufferHandle[index]);
+            GL.SetBufferData(BufferType.ArrayBuffer, bufferData, usage);
+        }
+
+        /// <summary>
+        ///   Set _data to current vertex BufferHandle object
+        /// </summary>
+        /// <typeparam _label="TItem">
+        ///   Type of bufferData
+        /// </typeparam>
+        /// <param _label="index">
+        ///   Index to find certain VBO in this instance
+        /// </param>
+        /// <param _label="bufferArray">
+        ///   Data to write in
+        /// </param>
+        /// <param _label="usage">
+        ///   How OpenGL use these _data, defined by <see cref="BufferUsage" />
+        /// </param>
+        public void WriteScalerData<T>(int index, T[] bufferArray, BufferUsage usage)
+            where T: unmanaged, INumber<T>
+        {
+            GL.BindBuffer(BufferType.ArrayBuffer, _bufferHandle[index]);
+            GL.SetBufferData(BufferType.ArrayBuffer, bufferArray, usage);
+        }
+
+        /// <summary>
+        ///   Set _data to current vertex BufferHandle object
+        /// </summary>
+        /// <typeparam _label="TItem">
+        ///   Type of bufferData
+        /// </typeparam>
+        /// <param _label="index">
+        ///   Index to find certain VBO in this instance
+        /// </param>
+        /// <param _label="scalerSpan">
+        ///   A <see cref="Span{T}" /> of _data to write in
+        /// </param>
+        /// <param _label="usage">
+        ///   How OpenGL use these _data, defined by <see cref="BufferUsage" />
+        /// </param>
+        public void WriteScalerData<T>(int index, ReadOnlySpan<T> scalerSpan, BufferUsage usage)
+            where T: unmanaged,INumber<T>
+        {
+            GL.BindBuffer(BufferType.ArrayBuffer, _bufferHandle[index]);
+            GL.SetBufferData(BufferType.ArrayBuffer, scalerSpan, usage);
+        }
+
+        /// <summary>
+        ///   Set data to current vertex BufferHandle object
+        /// </summary>
+        /// <typeparam _label="TItem">
+        ///   Type of bufferData
+        /// </typeparam>
+        /// <param _label="index">
+        ///   Index to find certain VBO in this instance
+        /// </param>
+        /// <param _label="vectorSpan">
+        ///   A <see cref="Span{T}" /> of data to write in
+        /// </param>
+        /// <param _label="usage">
+        ///   How OpenGL use these data, defined by <see cref="BufferUsage" />
+        /// </param>
+        public void WriteVectorData<T>(int index, ReadOnlySpan<T> vectorSpan, BufferUsage usage)
+            where T: unmanaged, IFixedVector<T>
+        {
+            GL.BindBuffer(BufferType.ArrayBuffer, _bufferHandle[index]);
+            GL.SetBufferVectorData(BufferType.ArrayBuffer, vectorSpan, usage);
+        }
+
+        /// <summary>
+        ///   Set _data to current vertex BufferHandle object
+        /// </summary>
+        /// <typeparam _label="TItem">
+        ///   Type of bufferData
+        /// </typeparam>
+        /// <param _label="index">
+        ///   Index to find certain VBO in this instance
+        /// </param>
+        /// <param _label="vectorArray">
+        ///   A array of _data to write in
+        /// </param>
+        /// <param _label="usage">
+        ///   How OpenGL use these _data, defined by <see cref="BufferUsage" />
+        /// </param>
+        public void WriteVectorData<T>(int index, T[] vectorArray, BufferUsage usage)
+            where T: unmanaged, IFixedVector<T>
+        {
+            GL.BindBuffer(BufferType.ArrayBuffer, _bufferHandle[index]);
+            GL.SetBufferVectorData(BufferType.ArrayBuffer, vectorArray, usage);
+        }
+
+        protected sealed override void Dispose(bool disposing)
+        {
+            if (disposing) {
+                GL.DeleteBuffers(_bufferHandle);
+            }
+        }
+
+    }
+}

StgSharp.Common/Graphics/OpenGL/GLfixed.cs

@@ -0,0 +1,49 @@
+//-----------------------------------------------------------------------
+//-----------------------------------------------------------------------
+//     file="GLfixed.cs"
+//     Project: StgSharp
+//     AuthorGroup: Nitload Space
+//     Copyright (c) Nitload Space. All rights reserved.
+//     
+//     Permission is hereby granted, free of charge, to any person 
+//     obtaining a copy of this software and associated documentation 
+//     files (the “Software”), to deal in the Software without restriction, 
+//     including without limitation the rights to use, copy, modify, merge,
+//     publish, distribute, sublicense, and/or sell copies of the Software, 
+//     and to permit persons to whom the Software is furnished to do so, 
+//     subject to the following conditions:
+//     
+//     The above copyright notice and 
+//     this permission notice shall be included in all copies 
+//     or substantial portions of the Software.
+//     
+//     THE SOFTWARE IS PROVIDED “AS IS”, 
+//     WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, 
+//     INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 
+//     FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. 
+//     IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, 
+//     DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, 
+//     ARISING FROM, OUT OF OR IN CONNECTION WITH 
+//     THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+//     
+//-----------------------------------------------------------------------
+//-----------------------------------------------------------------------
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Runtime.InteropServices;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace StgSharp.Internal
+{
+    [StructLayout( LayoutKind.Explicit, Size = 8 )]
+    public struct GLfixed
+    {
+
+        [FieldOffset( 0 )] public int All;
+        [FieldOffset( 0 )] public short Decimals;
+        [FieldOffset( 4 )] public short Inertger;
+
+    }
+}

StgSharp.Common/Graphics/OpenGL/ShaderEdit/IglConvertable.cs

@@ -0,0 +1,68 @@
+//-----------------------------------------------------------------------
+//-----------------------------------------------------------------------
+//     file="IglConvertable.cs"
+//     Project: StgSharp
+//     AuthorGroup: Nitload Space
+//     Copyright (c) Nitload Space. All rights reserved.
+//     
+//     Permission is hereby granted, free of charge, to any person 
+//     obtaining a copy of this software and associated documentation 
+//     files (the “Software”), to deal in the Software without restriction, 
+//     including without limitation the rights to use, copy, modify, merge,
+//     publish, distribute, sublicense, and/or sell copies of the Software, 
+//     and to permit persons to whom the Software is furnished to do so, 
+//     subject to the following conditions:
+//     
+//     The above copyright notice and 
+//     this permission notice shall be included in all copies 
+//     or substantial portions of the Software.
+//     
+//     THE SOFTWARE IS PROVIDED “AS IS”, 
+//     WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, 
+//     INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 
+//     FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. 
+//     IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, 
+//     DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, 
+//     ARISING FROM, OUT OF OR IN CONNECTION WITH 
+//     THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+//     
+//-----------------------------------------------------------------------
+//-----------------------------------------------------------------------
+using StgSharp.Graphics.OpenGL;
+
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace StgSharp.Graphics.ShaderEdit
+{
+    public interface IglConvertable
+    {
+
+        /// <summary>
+        ///
+        /// </summary>
+        public void DisplayGLtypeDefinition();
+
+        /// <summary>
+        ///
+        /// </summary>
+        public void GainAllUniforms( ShaderProgram source, params string[] uniformName );
+
+        /// <summary>
+        ///
+        /// </summary>
+        /// <returns>
+        ///
+        /// </returns>
+        public ShaderStruct GetConvertedGLtype();
+
+        /// <summary>
+        ///
+        /// </summary>
+        public void SetAllUniforms();
+
+    }
+}

StgSharp.Common/Graphics/OpenGL/ShaderEdit/Shader.cs

@@ -0,0 +1,288 @@
+//-----------------------------------------------------------------------
+//-----------------------------------------------------------------------
+//     file="Shader.cs"
+//     Project: StgSharp
+//     AuthorGroup: Nitload Space
+//     Copyright (c) Nitload Space. All rights reserved.
+//     
+//     Permission is hereby granted, free of charge, to any person 
+//     obtaining a copy of this software and associated documentation 
+//     files (the “Software”), to deal in the Software without restriction, 
+//     including without limitation the rights to use, copy, modify, merge,
+//     publish, distribute, sublicense, and/or sell copies of the Software, 
+//     and to permit persons to whom the Software is furnished to do so, 
+//     subject to the following conditions:
+//     
+//     The above copyright notice and 
+//     this permission notice shall be included in all copies 
+//     or substantial portions of the Software.
+//     
+//     THE SOFTWARE IS PROVIDED “AS IS”, 
+//     WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, 
+//     INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 
+//     FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. 
+//     IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, 
+//     DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, 
+//     ARISING FROM, OUT OF OR IN CONNECTION WITH 
+//     THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+//     
+//-----------------------------------------------------------------------
+//-----------------------------------------------------------------------
+using StgSharp;
+using StgSharp.Internal;
+
+using System;
+using System.Collections.Generic;
+using System.Diagnostics.CodeAnalysis;
+using System.IO;
+using System.Runtime.CompilerServices;
+using System.Runtime.InteropServices;
+using System.Text;
+using System.Xml.Linq;
+
+namespace StgSharp.Graphics.OpenGL
+{
+    public abstract partial class glRender : RenderStream
+    {
+
+        /// <summary>
+        ///   Create an instance of <see cref="Shader" /> program
+        /// </summary>
+        /// <returns>
+        ///   New instance of <see cref="Shader" /> instance.
+        /// </returns>
+        [MethodImpl(MethodImplOptions.AggressiveInlining)]
+        protected override sealed ShaderProgram CreateShaderProgram()
+        {
+            return new ShaderProgram(this);
+        }
+
+        [MethodImpl(MethodImplOptions.AggressiveInlining)]
+        protected override sealed Shader CreateShaderSegment(ShaderType type, int count)
+        {
+            return new Shader(GL.CreateShaderSet(count, type), type, this);
+        }
+
+    }
+
+    public class Shader : ISSDSerializable
+    {
+
+        private readonly OpenGLFunction GL;
+        internal readonly GlHandle[] handle;
+        public readonly ShaderType type;
+
+        internal unsafe Shader(GlHandle[] handle, ShaderType usage, glRender stream)
+        {
+            this.handle = handle;
+            GL = stream.GL;
+            type = usage;
+        }
+
+        public SerializableTypeCode SSDTypeCode => SerializableTypeCode.Shader;
+
+        /// <summary>
+        ///   Attach one shader code to a shader program.
+        /// </summary>
+        /// <param _label="target">
+        ///   Shader program to attach
+        /// </param>
+        /// <param _label="index">
+        ///   Index of shader code in current shader code set.
+        /// </param>
+        [MethodImpl(MethodImplOptions.AggressiveInlining)]
+        public void AttachTo(int index, [NotNull]ShaderProgram target)
+        {
+            GL.AttachShader(target.handle, handle[index]);
+        }
+
+        public void CheckStatus(int index, ShaderStatus status)
+        {
+            string log = GL.GetShaderStatus(this, index, (int)status);
+            if (!string.IsNullOrEmpty(log)) {
+                throw new InvalidOperationException($"{$"Shader Error \t{status}\n"}{log}");
+            }
+        }
+
+        [MethodImpl(MethodImplOptions.AggressiveInlining)]
+        public unsafe void Compile(int index, ReadOnlySpan<byte> codeU8Stream)
+        {
+            GL.LoadShaderSource(handle[index], codeU8Stream);
+            GL.CompileShader(handle[index]);
+            CheckStatus(index, ShaderStatus.CompileStatus);
+        }
+
+        [MethodImpl(MethodImplOptions.AggressiveInlining)]
+        public unsafe void Compile(int index, byte[] codeStream)
+        {
+            ArgumentNullException.ThrowIfNull(codeStream);
+            GL.LoadShaderSource(handle[index], codeStream);
+            GL.CompileShader(handle[index]);
+            CheckStatus(index, ShaderStatus.CompileStatus);
+        }
+
+        [MethodImpl(MethodImplOptions.AggressiveInlining)]
+        public unsafe void Compile(int index, string codeStream)
+        {
+            ArgumentNullException.ThrowIfNull(codeStream);
+            GL.LoadShaderSource(handle[index], codeStream.AsSpan());
+            GL.CompileShader(handle[index]);
+            CheckStatus(index, ShaderStatus.CompileStatus);
+        }
+
+        public void FromBytes(byte[] stream)
+        {
+            throw new NotImplementedException();
+        }
+
+        public static byte[] FromCodeFile(string fileRoute)
+        {
+            string str = File.ReadAllText(fileRoute);
+            if (string.IsNullOrEmpty(str)) {
+                throw new InvalidOperationException($"Cannot load and GLSL code from {fileRoute}");
+            }
+            return Encoding.UTF8.GetBytes(str);
+        }
+
+        public byte[] GetBytes()
+        {
+            return Array.Empty<byte>();
+        }
+
+        public byte[] GetBytes(out int length)
+        {
+            throw new NotImplementedException();
+        }
+
+        public override string ToString()
+        {
+            return $"This is a {type} shader, its shader handles are {handle.ToString()}.";
+        }
+
+    }
+
+    public enum ShaderStatus : int
+    {
+
+        CompileStatus = glConst.COMPILE_STATUS,
+
+    }
+
+    public class ShaderProgram
+    {
+
+        private readonly OpenGLFunction GL;
+        internal readonly GlHandle handle;
+
+        /// <summary>
+        ///   CustomizeInit a program with no shader attached.
+        /// </summary>
+        internal unsafe ShaderProgram(glRender binding)
+        {
+            GL = binding.GL;
+            handle = GL.CreateProgram();
+        }
+
+        /// <summary>
+        ///   Get a uniform form current shader, the value type of the uniform should be provided.
+        /// </summary>
+        /// <param _label="name">
+        ///   ContextName of the Uniform in shader code
+        /// </param>
+        /// <returns>
+        ///
+        /// </returns>
+        [MethodImpl(MethodImplOptions.AggressiveInlining)]
+        public unsafe Uniform<T> GetUniform<T>(string name) where T: unmanaged
+        {
+            return new Uniform<T>(GL.GetUniformLocation(this.handle, name));
+        }
+
+        /// <summary>
+        ///   Get a uniform form current shader, the value type of the uniform should be provided.
+        /// </summary>
+        /// <param _label="name">
+        ///   ContextName of the Uniform in shader code
+        /// </param>
+        /// <returns>
+        ///
+        /// </returns>
+        public unsafe Uniform<T, U> GetUniform<T, U>(string name) where T: unmanaged where U: struct
+        {
+            return new Uniform<T, U>(GL.GetUniformLocation(this.handle, name));
+        }
+
+        /// <summary>
+        ///   Get a uniform form current shader, the value type of the uniform should be provided.
+        /// </summary>
+        /// <param _label="name">
+        ///   ContextName of the Uniform in shader code
+        /// </param>
+        /// <returns>
+        ///
+        /// </returns>
+        public unsafe Uniform<T, U, V> GetUniform<T, U, V>(string name) where T: unmanaged
+            where U: struct
+            where V: struct
+        {
+            return new Uniform<T, U, V>(GL.GetUniformLocation(this.handle, name));
+        }
+
+        /// <summary>
+        ///   Get a uniform form current shader, the value type of the uniform should be provided.
+        /// </summary>
+        /// <param _label="name">
+        ///   ContextName of the Uniform in shader code
+        /// </param>
+        /// <returns>
+        ///
+        /// </returns>
+        public unsafe Uniform<T, U, V, W> GetUniform<T, U, V, W>(string name) where T: unmanaged
+            where U: struct
+            where V: struct
+            where W: struct
+        {
+            return new Uniform<T, U, V, W>(GL.GetUniformLocation(this.handle, name));
+        }
+
+        /// <summary>
+        ///   Link the shader to current viewPortDisplay.
+        /// </summary>
+        public unsafe void Link()
+        {
+            if (InternalIO.InternalLinkShaderProgram(
+                (OpenglContext*)this.GL.ContextHandle, handle.Value) ==
+                0)
+            {
+                IntPtr logPtr = InternalIO.InternalReadSSCLog();
+                try
+                {
+                    byte[] logByte = new byte[512];
+                    Marshal.Copy(logPtr, logByte, 0, 512);
+                    string log = Encoding.UTF8.GetString(logByte);
+                    log = log.Replace("\0", string.Empty);
+                    InternalIO.InternalWriteLog(log, LogType.Error);
+                }
+                catch (Exception ex)
+                {
+                    InternalIO.InternalWriteLog(ex.Message, LogType.Error);
+                }
+            }
+        }
+
+        /// <summary>
+        ///   Let the current viewPortDisplay use this shader.
+        /// </summary>
+        [MethodImpl(MethodImplOptions.AggressiveInlining)]
+        public unsafe void Use()
+        {
+            GL.UseProgram(handle);
+        }
+
+        ~ShaderProgram()
+        {
+            //handle.Dispose();
+        }
+
+    }
+}

StgSharp.Common/Graphics/OpenGL/ShaderEdit/Uniform.cs

@@ -0,0 +1,205 @@
+//-----------------------------------------------------------------------
+//-----------------------------------------------------------------------
+//     file="Uniform.cs"
+//     Project: StepVisualizer
+//     AuthorGroup: Nitload Space
+//     Copyright (c) Nitload Space. All rights reserved.
+//     
+//     Permission is hereby granted, free of charge, to any person 
+//     obtaining a copy of this software and associated documentation 
+//     files (the “Software”), to deal in the Software without restriction, 
+//     including without limitation the rights to use, copy, modify, merge,
+//     publish, distribute, sublicense, and/or sell copies of the Software, 
+//     and to permit persons to whom the Software is furnished to do so, 
+//     subject to the following conditions:
+//     
+//     The above copyright notice and 
+//     this permission notice shall be included in all copies 
+//     or substantial portions of the Software.
+//     
+//     THE SOFTWARE IS PROVIDED “AS IS”, 
+//     WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, 
+//     INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 
+//     FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. 
+//     IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, 
+//     DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, 
+//     ARISING FROM, OUT OF OR IN CONNECTION WITH 
+//     THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+//     
+//-----------------------------------------------------------------------
+//-----------------------------------------------------------------------
+using StgSharp.Graphics;
+using StgSharp.Mathematics;
+
+using System;
+using System.Collections.Generic;
+using System.Diagnostics.CodeAnalysis;
+using System.Linq;
+using System.Numerics;
+using System.Runtime.CompilerServices;
+using System.Runtime.InteropServices;
+using System.Text;
+
+namespace StgSharp.Graphics.OpenGL
+{
+    public class Uniform
+    {
+
+        internal GlHandle id;
+
+        public GlHandle Handle
+        {
+            get => id;
+        }
+
+    }
+
+    public sealed class Uniform<T> : Uniform where T:unmanaged
+    {
+
+        internal Uniform() { }
+
+        internal unsafe Uniform( GlHandle id )
+        {
+            this.id = id;
+        }
+
+        internal static Uniform<T> FromHandle( GlHandle handle )
+        {
+            return new Uniform<T>
+            {
+                id = handle
+            };
+        }
+
+    }
+
+    public sealed class Uniform<T, U> : Uniform where T:unmanaged where U: struct
+    {
+
+        internal Uniform() { }
+
+        internal unsafe Uniform( GlHandle id )
+        {
+            this.id = id;
+        }
+
+        internal static Uniform<T, U> FromHandle( GlHandle handle )
+        {
+            return new Uniform<T, U>
+            {
+                id = handle
+            };
+        }
+
+    }
+
+    public sealed class Uniform<T, U, V> : Uniform where T:unmanaged where U: struct where V: struct
+    {
+
+        internal Uniform() { }
+
+        internal unsafe Uniform( GlHandle id )
+        {
+            this.id = id;
+        }
+
+        internal static Uniform<T, U, V> FromHandle( GlHandle handle )
+        {
+            return new Uniform<T, U, V>
+            {
+                id = handle
+            };
+        }
+
+    }
+
+    public sealed class Uniform<T, U, V, W> : Uniform where T:unmanaged where U: struct
+        where V: struct
+        where W: struct
+    {
+
+        internal Uniform() { }
+
+        internal unsafe Uniform( GlHandle id )
+        {
+            this.id = id;
+        }
+
+        internal static Uniform<T, U, V, W> FromHandle( GlHandle handle )
+        {
+            return new Uniform<T, U, V, W>
+            {
+                id = handle
+            };
+        }
+
+    }
+
+    public unsafe partial class OpenGLFunction
+    {
+
+        [MethodImpl( MethodImplOptions.AggressiveInlining )]
+        public void SetUniformValue( [NotNull] Uniform<Matrix44> uniform, Matrix44 mat )
+        {
+            Matrix44 temp = mat;
+            Context.glUniformMatrix4fv( uniform.id.SignedValue, 1, false, ( float* )&temp );
+        }
+
+        [MethodImpl( MethodImplOptions.AggressiveInlining )]
+        public void SetUniformValue(
+                    [NotNull]Uniform<float, float, float, float> uniform,
+                    Vec4 vec )
+        {
+            Vec4 temp = vec;
+            Context.glUniform1fv( uniform.id.SignedValue, 4, &temp.reg );
+        }
+
+        [MethodImpl( MethodImplOptions.AggressiveInlining )]
+        public void SetUniformValue( [NotNull]Uniform<Vec4> uniform, Vec4 vec )
+        {
+            Vec4 temp = vec;
+            Context.glUniform1fv( uniform.id.SignedValue, 4, &temp.reg );
+        }
+
+        [MethodImpl( MethodImplOptions.AggressiveInlining )]
+        public void SetUniformValue( [NotNull]Uniform<float> uniform, float v0 )
+        {
+            Context.glUniform1f( uniform.id.SignedValue, v0 );
+        }
+
+        [MethodImpl( MethodImplOptions.AggressiveInlining )]
+        public void SetUniformValue( [NotNull]Uniform<int> uniform, int i0 )
+        {
+            Context.glUniform1i( uniform.id.SignedValue, i0 );
+        }
+
+        [MethodImpl( MethodImplOptions.AggressiveInlining )]
+        public void SetUniformValue( [NotNull] Uniform<float, float> uniform, float v0, float v1 )
+        {
+            Context.glUniform2f( uniform.id.SignedValue, v0, v1 );
+        }
+
+        [MethodImpl( MethodImplOptions.AggressiveInlining )]
+        public void SetUniformValue(
+                    [NotNull] Uniform<float, float, float> uniform,
+                    float v0,
+                    float v1,
+                    float v2 )
+        {
+            Context.glUniform3f( uniform.id.SignedValue, v0, v1, v2 );
+        }
+
+        [MethodImpl( MethodImplOptions.AggressiveInlining )]
+        public void SetUniformValue(
+                    [NotNull] Uniform<float, float, float, float> uniform,
+                    float v0,
+                    float v1,
+                    float v2,
+                    float v3 )
+        {
+            Context.glUniform4f( uniform.id.SignedValue, v0, v1, v2, v3 );
+        }
+
+    }
+}

StgSharp.Common/Graphics/OpenGL/glAPICalling.cs

@@ -0,0 +1,44 @@
+//-----------------------------------------------------------------------
+//-----------------------------------------------------------------------
+//     file="glAPICalling.cs"
+//     Project: StgSharp
+//     AuthorGroup: Nitload Space
+//     Copyright (c) Nitload Space. All rights reserved.
+//     
+//     Permission is hereby granted, free of charge, to any person 
+//     obtaining a copy of this software and associated documentation 
+//     files (the “Software”), to deal in the Software without restriction, 
+//     including without limitation the rights to use, copy, modify, merge,
+//     publish, distribute, sublicense, and/or sell copies of the Software, 
+//     and to permit persons to whom the Software is furnished to do so, 
+//     subject to the following conditions:
+//     
+//     The above copyright notice and 
+//     this permission notice shall be included in all copies 
+//     or substantial portions of the Software.
+//     
+//     THE SOFTWARE IS PROVIDED “AS IS”, 
+//     WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, 
+//     INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 
+//     FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. 
+//     IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, 
+//     DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, 
+//     ARISING FROM, OUT OF OR IN CONNECTION WITH 
+//     THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+//     
+//-----------------------------------------------------------------------
+//-----------------------------------------------------------------------
+using System;
+using System.Collections.Generic;
+using System.Text;
+
+namespace StgSharp.Graphics.OpenGL
+{
+    [AttributeUsage( AttributeTargets.Method )]
+    public sealed class OpenGLAPICallingAttribute : Attribute
+    {
+
+        public OpenGLAPICallingAttribute() { }
+
+    }
+}

StgSharp.Common/Graphics/OpenGL/glApiManagerConst.cs

@@ -0,0 +1,688 @@
+//-----------------------------------------------------------------------
+//-----------------------------------------------------------------------
+//     file="glApiManagerConst.cs"
+//     Project: StgSharp
+//     AuthorGroup: Nitload Space
+//     Copyright (c) Nitload Space. All rights reserved.
+//     
+//     Permission is hereby granted, free of charge, to any person 
+//     obtaining a copy of this software and associated documentation 
+//     files (the “Software”), to deal in the Software without restriction, 
+//     including without limitation the rights to use, copy, modify, merge,
+//     publish, distribute, sublicense, and/or sell copies of the Software, 
+//     and to permit persons to whom the Software is furnished to do so, 
+//     subject to the following conditions:
+//     
+//     The above copyright notice and 
+//     this permission notice shall be included in all copies 
+//     or substantial portions of the Software.
+//     
+//     THE SOFTWARE IS PROVIDED “AS IS”, 
+//     WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, 
+//     INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 
+//     FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. 
+//     IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, 
+//     DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, 
+//     ARISING FROM, OUT OF OR IN CONNECTION WITH 
+//     THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+//     
+//-----------------------------------------------------------------------
+//-----------------------------------------------------------------------
+using System;
+using System.Collections.Generic;
+using System.Text;
+
+namespace StgSharp.Graphics.OpenGL
+{
+    public static partial class glManager
+    {
+
+        #region coreVersion
+
+        private static bool core10 = false;
+        private static bool core11 = false;
+        private static bool core12 = false;
+        private static bool core13 = false;
+        private static bool core14 = false;
+        private static bool core15 = false;
+        private static bool core20 = false;
+        private static bool core21 = false;
+        private static bool core30 = false;
+        private static bool core31 = false;
+        private static bool core32 = false;
+        private static bool core33 = false;
+        private static bool core40 = false;
+        private static bool core41 = false;
+        private static bool core42 = false;
+        private static bool core43 = false;
+        private static bool core44 = false;
+        private static bool core45 = false;
+        private static bool core46 = false;
+
+        #endregion
+
+        #region extension
+
+        private static bool _3DFX_tbuffer;
+        private static bool _3DFX_texture_compression_FXT1;
+        private static bool _4DFX_multisample;
+        private static bool AMD_blend_minmax_factor;
+        private static bool AMD_conservative_depth;
+        private static bool AMD_debug_output;
+        private static bool AMD_depth_clamp_separate;
+        private static bool AMD_draw_buffers_blend;
+        private static bool AMD_framebuffer_multisample_advanced;
+        private static bool AMD_framebuffer_sample_positions;
+        private static bool AMD_gcn_shader;
+        private static bool AMD_gpu_shader_half_float;
+        private static bool AMD_gpu_shader_int16;
+        private static bool AMD_gpu_shader_int64;
+        private static bool AMD_interleaved_elements;
+        private static bool AMD_multi_draw_indirect;
+        private static bool AMD_name_gen_delete;
+        private static bool AMD_occlusion_query_event;
+        private static bool AMD_performance_monitor;
+        private static bool AMD_pinned_memory;
+        private static bool AMD_query_buffer_object;
+        private static bool AMD_sample_positions;
+        private static bool AMD_seamless_cubemap_per_texture;
+        private static bool AMD_shader_atomic_counter_ops;
+        private static bool AMD_shader_ballot;
+        private static bool AMD_shader_explicit_vertex_parameter;
+        private static bool AMD_shader_gpu_shader_half_float_fetch;
+        private static bool AMD_shader_image_load_store_lod;
+        private static bool AMD_shader_stencil_export;
+        private static bool AMD_shader_trinary_minmax;
+        private static bool AMD_sparse_texture;
+        private static bool AMD_stencil_operation_extended;
+        private static bool AMD_texture_gather_bias_lod;
+        private static bool AMD_texture_texture4;
+        private static bool AMD_transform_feedback3_lines_triangles;
+        private static bool AMD_transform_feedback4;
+        private static bool AMD_vertex_shader_layer;
+        private static bool AMD_vertex_shader_tessellator;
+        private static bool AMD_vertex_shader_viewport_index;
+        private static bool APPLE_aux_depth_stencil;
+        private static bool APPLE_client_storage;
+        private static bool APPLE_element_array;
+        private static bool APPLE_fence;
+        private static bool APPLE_float_pixels;
+        private static bool APPLE_flush_buffer_range;
+        private static bool APPLE_object_purgeable;
+        private static bool APPLE_rgb_422;
+        private static bool APPLE_row_bytes;
+        private static bool APPLE_specular_vector;
+        private static bool APPLE_texture_range;
+        private static bool APPLE_transform_hint;
+        private static bool APPLE_vertex_array_object;
+        private static bool APPLE_vertex_array_range;
+        private static bool APPLE_vertex_program_evaluators;
+        private static bool APPLE_ycbcr_422;
+        private static bool ARB_arrays_of_arrays;
+        private static bool ARB_base_instance;
+        private static bool ARB_bindless_texture;
+        private static bool ARB_blend_func_extended;
+        private static bool ARB_buffer_storage;
+        private static bool ARB_cl_event;
+        private static bool ARB_clear_buffer_object;
+        private static bool ARB_clear_texture;
+        private static bool ARB_clip_control;
+        private static bool ARB_color_buffer_float;
+        private static bool ARB_compatibility;
+        private static bool ARB_compressed_texture_pixel_storage;
+        private static bool ARB_compute_shader;
+        private static bool ARB_compute_variable_group_size;
+        private static bool ARB_conditional_render_inverted;
+        private static bool ARB_conservative_depth;
+        private static bool ARB_copy_buffer;
+        private static bool ARB_copy_image;
+        private static bool ARB_cull_distance;
+        private static bool ARB_debug_output;
+        private static bool ARB_depth_buffer_float;
+        private static bool ARB_depth_clamp;
+        private static bool ARB_depth_texture;
+        private static bool ARB_derivative_control;
+        private static bool ARB_direct_state_access;
+        private static bool ARB_draw_buffers;
+        private static bool ARB_draw_buffers_blend;
+        private static bool ARB_draw_elements_base_vertex;
+        private static bool ARB_draw_indirect;
+        private static bool ARB_draw_instanced;
+        private static bool ARB_enhanced_layouts;
+        private static bool ARB_ES2_compatibility;
+        private static bool ARB_ES3_1_compatibility;
+        private static bool ARB_ES3_2_compatibility;
+        private static bool ARB_ES3_compatibility;
+        private static bool ARB_explicit_attrib_location;
+        private static bool ARB_explicit_uniform_location;
+        private static bool ARB_fragment_coord_conventions;
+        private static bool ARB_fragment_layer_viewport;
+        private static bool ARB_fragment_program;
+        private static bool ARB_fragment_program_shadow;
+        private static bool ARB_fragment_shader;
+        private static bool ARB_fragment_shader_interlock;
+        private static bool ARB_framebuffer_no_attachments;
+        private static bool ARB_framebuffer_object;
+        private static bool ARB_framebuffer_sRGB;
+        private static bool ARB_geometry_shader4;
+        private static bool ARB_get_program_binary;
+        private static bool ARB_get_texture_sub_image;
+        private static bool ARB_gl_spirv;
+        private static bool ARB_gpu_shader_fp64;
+        private static bool ARB_gpu_shader_int64;
+        private static bool ARB_gpu_shader5;
+        private static bool ARB_half_float_pixel;
+        private static bool ARB_half_float_vertex;
+        private static bool ARB_imaging;
+        private static bool ARB_indirect_parameters;
+        private static bool ARB_instanced_arrays;
+        private static bool ARB_internalformat_query;
+        private static bool ARB_internalformat_query2;
+        private static bool ARB_invalidate_subdata;
+        private static bool ARB_map_buffer_alignment;
+        private static bool ARB_map_buffer_range;
+        private static bool ARB_matrix_palette;
+        private static bool ARB_multi_bind;
+        private static bool ARB_multi_draw_indirect;
+        private static bool ARB_multisample;
+        private static bool ARB_multitexture;
+        private static bool ARB_occlusion_query;
+        private static bool ARB_occlusion_query2;
+        private static bool ARB_parallel_shader_compile;
+        private static bool ARB_pipeline_statistics_query;
+        private static bool ARB_pixel_buffer_object;
+        private static bool ARB_point_parameters;
+        private static bool ARB_point_sprite;
+        private static bool ARB_polygon_offset_clamp;
+        private static bool ARB_post_depth_coverage;
+        private static bool ARB_program_interface_query;
+        private static bool ARB_provoking_vertex;
+        private static bool ARB_query_buffer_object;
+        private static bool ARB_robust_buffer_access_behavior;
+        private static bool ARB_robustness;
+        private static bool ARB_robustness_isolation;
+        private static bool ARB_sample_locations;
+        private static bool ARB_sample_shading;
+        private static bool ARB_sampler_objects;
+        private static bool ARB_seamless_cube_map;
+        private static bool ARB_seamless_cubemap_per_texture;
+        private static bool ARB_separate_shader_objects;
+        private static bool ARB_shader_atomic_counter_ops;
+        private static bool ARB_shader_atomic_counters;
+        private static bool ARB_shader_ballot;
+        private static bool ARB_shader_bit_encoding;
+        private static bool ARB_shader_clock;
+        private static bool ARB_shader_draw_parameters;
+        private static bool ARB_shader_group_vote;
+        private static bool ARB_shader_image_load_store;
+        private static bool ARB_shader_image_size;
+        private static bool ARB_shader_objects;
+        private static bool ARB_shader_precision;
+        private static bool ARB_shader_stencil_export;
+        private static bool ARB_shader_storage_buffer_object;
+        private static bool ARB_shader_subroutine;
+        private static bool ARB_shader_texture_image_samples;
+        private static bool ARB_shader_texture_lod;
+        private static bool ARB_shader_viewport_layer_array;
+        private static bool ARB_shading_language_100;
+        private static bool ARB_shading_language_420pack;
+        private static bool ARB_shading_language_include;
+        private static bool ARB_shading_language_packing;
+        private static bool ARB_shadow;
+        private static bool ARB_shadow_ambient;
+        private static bool ARB_sparse_buffer;
+        private static bool ARB_sparse_texture;
+        private static bool ARB_sparse_texture_clamp;
+        private static bool ARB_sparse_texture2;
+        private static bool ARB_spirv_extensions;
+        private static bool ARB_stencil_texturing;
+        private static bool ARB_sync;
+        private static bool ARB_tessellation_shader;
+        private static bool ARB_texture_barrier;
+        private static bool ARB_texture_border_clamp;
+        private static bool ARB_texture_buffer_object;
+        private static bool ARB_texture_buffer_object_rgb32;
+        private static bool ARB_texture_buffer_range;
+        private static bool ARB_texture_compression;
+        private static bool ARB_texture_compression_bptc;
+        private static bool ARB_texture_compression_rgtc;
+        private static bool ARB_texture_cube_map;
+        private static bool ARB_texture_cube_map_array;
+        private static bool ARB_texture_env_add;
+        private static bool ARB_texture_env_combine;
+        private static bool ARB_texture_env_crossbar;
+        private static bool ARB_texture_env_dot3;
+        private static bool ARB_texture_filter_anisotropic;
+        private static bool ARB_texture_filter_minmax;
+        private static bool ARB_texture_float;
+        private static bool ARB_texture_gather;
+        private static bool ARB_texture_mirror_clamp_to_edge;
+        private static bool ARB_texture_mirrored_repeat;
+        private static bool ARB_texture_multisample;
+        private static bool ARB_texture_non_power_of_two;
+        private static bool ARB_texture_query_levels;
+        private static bool ARB_texture_query_lod;
+        private static bool ARB_texture_rectangle;
+        private static bool ARB_texture_rg;
+        private static bool ARB_texture_rgb10_a2ui;
+        private static bool ARB_texture_stencil8;
+        private static bool ARB_texture_storage;
+        private static bool ARB_texture_storage_multisample;
+        private static bool ARB_texture_swizzle;
+        private static bool ARB_texture_view;
+        private static bool ARB_timer_query;
+        private static bool ARB_transform_feedback_instanced;
+        private static bool ARB_transform_feedback_overflow_query;
+        private static bool ARB_transform_feedback2;
+        private static bool ARB_transform_feedback3;
+        private static bool ARB_transpose_matrix;
+        private static bool ARB_uniform_buffer_object;
+        private static bool ARB_vertex_array_bgra;
+        private static bool ARB_vertex_array_object;
+        private static bool ARB_vertex_attrib_64bit;
+        private static bool ARB_vertex_attrib_binding;
+        private static bool ARB_vertex_blend;
+        private static bool ARB_vertex_buffer_object;
+        private static bool ARB_vertex_program;
+        private static bool ARB_vertex_shader;
+        private static bool ARB_vertex_type_10f_11f_11f_rev;
+        private static bool ARB_vertex_type_2_10_10_10_rev;
+        private static bool ARB_viewport_array;
+        private static bool ARB_window_pos;
+        private static bool ATI_draw_buffers;
+        private static bool ATI_element_array;
+        private static bool ATI_envmap_bumpmap;
+        private static bool ATI_fragment_shader;
+        private static bool ATI_map_object_buffer;
+        private static bool ATI_meminfo;
+        private static bool ATI_pixel_format_float;
+        private static bool ATI_pn_triangles;
+        private static bool ATI_separate_stencil;
+        private static bool ATI_text_fragment_shader;
+        private static bool ATI_texture_env_combine3;
+        private static bool ATI_texture_float;
+        private static bool ATI_texture_mirror_once;
+        private static bool ATI_vertex_array_object;
+        private static bool ATI_vertex_attrib_array_object;
+        private static bool ATI_vertex_streams;
+        private static bool EXT_422_pixels;
+        private static bool EXT_abgr;
+        private static bool EXT_bgra;
+        private static bool EXT_bindable_uniform;
+        private static bool EXT_blend_color;
+        private static bool EXT_blend_equation_separate;
+        private static bool EXT_blend_func_separate;
+        private static bool EXT_blend_logic_op;
+        private static bool EXT_blend_minmax;
+        private static bool EXT_blend_subtract;
+        private static bool EXT_clip_volume_hint;
+        private static bool EXT_cmyka;
+        private static bool EXT_color_subtable;
+        private static bool EXT_compiled_vertex_array;
+        private static bool EXT_convolution;
+        private static bool EXT_coordinate_frame;
+        private static bool EXT_copy_texture;
+        private static bool EXT_cull_vertex;
+        private static bool EXT_debug_label;
+        private static bool EXT_debug_marker;
+        private static bool EXT_depth_bounds_test;
+        private static bool EXT_direct_state_access;
+        private static bool EXT_draw_buffers2;
+        private static bool EXT_draw_instanced;
+        private static bool EXT_draw_range_elements;
+        private static bool EXT_EGL_image_storage;
+        private static bool EXT_EGL_sync;
+        private static bool EXT_external_buffer;
+        private static bool EXT_fog_coord;
+        private static bool EXT_framebuffer_blit;
+        private static bool EXT_framebuffer_blit_layers;
+        private static bool EXT_framebuffer_multisample;
+        private static bool EXT_framebuffer_multisample_blit_scaled;
+        private static bool EXT_framebuffer_object;
+        private static bool EXT_framebuffer_sRGB;
+        private static bool EXT_geometry_shader4;
+        private static bool EXT_gpu_program_parameters;
+        private static bool EXT_gpu_shader4;
+        private static bool EXT_histogram;
+        private static bool EXT_index_array_formats;
+        private static bool EXT_index_func;
+        private static bool EXT_index_material;
+        private static bool EXT_index_texture;
+        private static bool EXT_light_texture;
+        private static bool EXT_memory_object;
+        private static bool EXT_memory_object_fd;
+        private static bool EXT_memory_object_win32;
+        private static bool EXT_misc_attribute;
+        private static bool EXT_multi_draw_arrays;
+        private static bool EXT_multisample;
+        private static bool EXT_multiview_tessellation_geometry_shader;
+        private static bool EXT_multiview_texture_multisample;
+        private static bool EXT_multiview_timer_query;
+        private static bool EXT_packed_depth_stencil;
+        private static bool EXT_packed_float;
+        private static bool EXT_packed_pixels;
+        private static bool EXT_paletted_texture;
+        private static bool EXT_pixel_buffer_object;
+        private static bool EXT_pixel_transform;
+        private static bool EXT_pixel_transform_color_table;
+        private static bool EXT_point_parameters;
+        private static bool EXT_polygon_offset;
+        private static bool EXT_polygon_offset_clamp;
+        private static bool EXT_post_depth_coverage;
+        private static bool EXT_provoking_vertex;
+        private static bool EXT_raster_multisample;
+        private static bool EXT_rescale_normal;
+        private static bool EXT_secondary_color;
+        private static bool EXT_semaphore;
+        private static bool EXT_semaphore_fd;
+        private static bool EXT_semaphore_win32;
+        private static bool EXT_separate_shader_objects;
+        private static bool EXT_separate_specular_color;
+        private static bool EXT_shader_framebuffer_fetch;
+        private static bool EXT_shader_framebuffer_fetch_non_coherent;
+        private static bool EXT_shader_image_load_formatted;
+        private static bool EXT_shader_image_load_store;
+        private static bool EXT_shader_integer_mix;
+        private static bool EXT_shader_samples_identical;
+        private static bool EXT_shadow_funcs;
+        private static bool EXT_shared_texture_palette;
+        private static bool EXT_sparse_texture2;
+        private static bool EXT_stencil_clear_tag;
+        private static bool EXT_stencil_two_side;
+        private static bool EXT_stencil_wrap;
+        private static bool EXT_subtexture;
+        private static bool EXT_texture;
+        private static bool EXT_texture_array;
+        private static bool EXT_texture_buffer_object;
+        private static bool EXT_texture_compression_latc;
+        private static bool EXT_texture_compression_rgtc;
+        private static bool EXT_texture_compression_s3tc;
+        private static bool EXT_texture_cube_map;
+        private static bool EXT_texture_env_add;
+        private static bool EXT_texture_env_combine;
+        private static bool EXT_texture_env_dot3;
+        private static bool EXT_texture_filter_anisotropic;
+        private static bool EXT_texture_filter_minmax;
+        private static bool EXT_texture_integer;
+        private static bool EXT_texture_lod_bias;
+        private static bool EXT_texture_mirror_clamp;
+        private static bool EXT_texture_object;
+        private static bool EXT_texture_perturb_normal;
+        private static bool EXT_texture_shadow_lod;
+        private static bool EXT_texture_shared_exponent;
+        private static bool EXT_texture_snorm;
+        private static bool EXT_texture_sRGB;
+        private static bool EXT_texture_sRGB_decode;
+        private static bool EXT_texture_sRGB_R8;
+        private static bool EXT_texture_sRGB_RG8;
+        private static bool EXT_texture_storage;
+        private static bool EXT_texture_swizzle;
+        private static bool EXT_texture3D;
+        private static bool EXT_timer_query;
+        private static bool EXT_transform_feedback;
+        private static bool EXT_vertex_array;
+        private static bool EXT_vertex_array_bgra;
+        private static bool EXT_vertex_attrib_64bit;
+        private static bool EXT_vertex_shader;
+        private static bool EXT_vertex_weighting;
+        private static bool EXT_win32_keyed_mutex;
+        private static bool EXT_window_rectangles;
+        private static bool EXT_x11_sync_object;
+        private static bool GREMEDY_frame_terminator;
+        private static bool GREMEDY_string_marker;
+        private static bool HP_convolution_border_modes;
+        private static bool HP_image_transform;
+        private static bool HP_occlusion_test;
+        private static bool HP_texture_lighting;
+        private static bool IBM_cull_vertex;
+        private static bool IBM_multimode_draw_arrays;
+        private static bool IBM_rasterpos_clip;
+        private static bool IBM_static_data;
+        private static bool IBM_texture_mirrored_repeat;
+        private static bool IBM_vertex_array_lists;
+        private static bool INGR_blend_func_separate;
+        private static bool INGR_color_clamp;
+        private static bool INGR_interlace_read;
+        private static bool INTEL_blackhole_render;
+        private static bool INTEL_conservative_rasterization;
+        private static bool INTEL_fragment_shader_ordering;
+        private static bool INTEL_framebuffer_CMAA;
+        private static bool INTEL_map_texture;
+        private static bool INTEL_parallel_arrays;
+        private static bool INTEL_performance_query;
+        private static bool KHR_blend_equation_advanced;
+        private static bool KHR_blend_equation_advanced_coherent;
+        private static bool KHR_context_flush_control;
+        private static bool KHR_debug;
+        private static bool KHR_no_error;
+        private static bool KHR_parallel_shader_compile;
+        private static bool KHR_robust_buffer_access_behavior;
+        private static bool KHR_robustness;
+        private static bool KHR_shader_subgroup;
+        private static bool KHR_texture_compression_astc_hdr;
+        private static bool KHR_texture_compression_astc_ldr;
+        private static bool KHR_texture_compression_astc_sliced_3d;
+        private static bool MESA_framebuffer_flip_x;
+        private static bool MESA_framebuffer_flip_y;
+        private static bool MESA_framebuffer_swap_xy;
+        private static bool MESA_pack_invert;
+        private static bool MESA_program_binary_formats;
+        private static bool MESA_resize_buffers;
+        private static bool MESA_shader_integer_functions;
+        private static bool MESA_tile_raster_order;
+        private static bool MESA_window_pos;
+        private static bool MESA_ycbcr_texture;
+        private static bool MESAX_texture_stack;
+        private static bool NV_alpha_to_coverage_dither_control;
+        private static bool NV_bindless_multi_draw_indirect;
+        private static bool NV_bindless_multi_draw_indirect_count;
+        private static bool NV_bindless_texture;
+        private static bool NV_blend_equation_advanced;
+        private static bool NV_blend_equation_advanced_coherent;
+        private static bool NV_blend_minmax_factor;
+        private static bool NV_blend_square;
+        private static bool NV_clip_space_w_scaling;
+        private static bool NV_command_list;
+        private static bool NV_compute_program5;
+        private static bool NV_compute_shader_derivatives;
+        private static bool NV_conditional_render;
+        private static bool NV_conservative_raster;
+        private static bool NV_conservative_raster_dilate;
+        private static bool NV_conservative_raster_pre_snap;
+        private static bool NV_conservative_raster_pre_snap_triangles;
+        private static bool NV_conservative_raster_underestimation;
+        private static bool NV_copy_depth_to_color;
+        private static bool NV_copy_image;
+        private static bool NV_deep_texture3D;
+        private static bool NV_depth_buffer_float;
+        private static bool NV_depth_clamp;
+        private static bool NV_draw_texture;
+        private static bool NV_draw_vulkan_image;
+        private static bool NV_evaluators;
+        private static bool NV_explicit_multisample;
+        private static bool NV_fence;
+        private static bool NV_fill_rectangle;
+        private static bool NV_float_buffer;
+        private static bool NV_fog_distance;
+        private static bool NV_fragment_coverage_to_color;
+        private static bool NV_fragment_program;
+        private static bool NV_fragment_program_option;
+        private static bool NV_fragment_program2;
+        private static bool NV_fragment_program4;
+        private static bool NV_fragment_shader_barycentric;
+        private static bool NV_fragment_shader_interlock;
+        private static bool NV_framebuffer_mixed_samples;
+        private static bool NV_framebuffer_multisample_coverage;
+        private static bool NV_geometry_program4;
+        private static bool NV_geometry_shader_passthrough;
+        private static bool NV_geometry_shader4;
+        private static bool NV_gpu_multicast;
+        private static bool NV_gpu_program4;
+        private static bool NV_gpu_program5;
+        private static bool NV_gpu_program5_mem_extended;
+        private static bool NV_gpu_shader5;
+        private static bool NV_half_float;
+        private static bool NV_internalformat_sample_query;
+        private static bool NV_light_max_exponent;
+        private static bool NV_memory_attachment;
+        private static bool NV_memory_object_sparse;
+        private static bool NV_mesh_shader;
+        private static bool NV_multisample_coverage;
+        private static bool NV_multisample_filter_hint;
+        private static bool NV_occlusion_query;
+        private static bool NV_packed_depth_stencil;
+        private static bool NV_parameter_buffer_object;
+        private static bool NV_parameter_buffer_object2;
+        private static bool NV_path_rendering;
+        private static bool NV_path_rendering_shared_edge;
+        private static bool NV_pixel_data_range;
+        private static bool NV_point_sprite;
+        private static bool NV_present_video;
+        private static bool NV_primitive_restart;
+        private static bool NV_primitive_shading_rate;
+        private static bool NV_query_resource;
+        private static bool NV_query_resource_tag;
+        private static bool NV_register_combiners;
+        private static bool NV_register_combiners2;
+        private static bool NV_representative_fragment_test;
+        private static bool NV_robustness_video_memory_purge;
+        private static bool NV_sample_locations;
+        private static bool NV_sample_mask_override_coverage;
+        private static bool NV_scissor_exclusive;
+        private static bool NV_shader_atomic_counters;
+        private static bool NV_shader_atomic_float;
+        private static bool NV_shader_atomic_float64;
+        private static bool NV_shader_atomic_fp16_vector;
+        private static bool NV_shader_atomic_int64;
+        private static bool NV_shader_buffer_load;
+        private static bool NV_shader_buffer_store;
+        private static bool NV_shader_storage_buffer_object;
+        private static bool NV_shader_subgroup_partitioned;
+        private static bool NV_shader_texture_footprint;
+        private static bool NV_shader_thread_group;
+        private static bool NV_shader_thread_shuffle;
+        private static bool NV_shading_rate_image;
+        private static bool NV_stereo_view_rendering;
+        private static bool NV_tessellation_program5;
+        private static bool NV_texgen_emboss;
+        private static bool NV_texgen_reflection;
+        private static bool NV_texture_barrier;
+        private static bool NV_texture_compression_vtc;
+        private static bool NV_texture_env_combine4;
+        private static bool NV_texture_expand_normal;
+        private static bool NV_texture_multisample;
+        private static bool NV_texture_rectangle;
+        private static bool NV_texture_rectangle_compressed;
+        private static bool NV_texture_shader;
+        private static bool NV_texture_shader2;
+        private static bool NV_texture_shader3;
+        private static bool NV_timeline_semaphore;
+        private static bool NV_transform_feedback;
+        private static bool NV_transform_feedback2;
+        private static bool NV_uniform_buffer_std430_layout;
+        private static bool NV_uniform_buffer_unified_memory;
+        private static bool NV_vdpau_interop;
+        private static bool NV_vdpau_interop2;
+        private static bool NV_vertex_array_range;
+        private static bool NV_vertex_array_range2;
+        private static bool NV_vertex_attrib_integer_64bit;
+        private static bool NV_vertex_buffer_unified_memory;
+        private static bool NV_vertex_program;
+        private static bool NV_vertex_program1_1;
+        private static bool NV_vertex_program2;
+        private static bool NV_vertex_program2_option;
+        private static bool NV_vertex_program3;
+        private static bool NV_vertex_program4;
+        private static bool NV_video_capture;
+        private static bool NV_viewport_array2;
+        private static bool NV_viewport_swizzle;
+        private static bool NVX_blend_equation_advanced_multi_draw_buffers;
+        private static bool NVX_conditional_render;
+        private static bool NVX_gpu_memory_info;
+        private static bool NVX_gpu_multicast2;
+        private static bool NVX_linked_gpu_multicast;
+        private static bool NVX_progress_fence;
+        private static bool OES_byte_coordinates;
+        private static bool OES_compressed_paletted_texture;
+        private static bool OES_fixed_point;
+        private static bool OES_query_matrix;
+        private static bool OES_read_format;
+        private static bool OES_single_precision;
+        private static bool OML_interlace;
+        private static bool OML_resample;
+        private static bool OML_subsample;
+        private static bool OVR_multiview;
+        private static bool OVR_multiview2;
+        private static bool PGI_misc_hints;
+        private static bool PGI_vertex_hints;
+        private static bool REND_screen_coordinates;
+        private static bool S3_s3tc;
+        private static bool SGI_color_matrix;
+        private static bool SGI_color_table;
+        private static bool SGI_texture_color_table;
+        private static bool SGIS_detail_texture;
+        private static bool SGIS_fog_function;
+        private static bool SGIS_generate_mipmap;
+        private static bool SGIS_multisample;
+        private static bool SGIS_pixel_texture;
+        private static bool SGIS_point_line_texgen;
+        private static bool SGIS_point_parameters;
+        private static bool SGIS_sharpen_texture;
+        private static bool SGIS_texture_border_clamp;
+        private static bool SGIS_texture_color_mask;
+        private static bool SGIS_texture_edge_clamp;
+        private static bool SGIS_texture_filter4;
+        private static bool SGIS_texture_lod;
+        private static bool SGIS_texture_select;
+        private static bool SGIS_texture4D;
+        private static bool SGIX_async;
+        private static bool SGIX_async_histogram;
+        private static bool SGIX_async_pixel;
+        private static bool SGIX_blend_alpha_minmax;
+        private static bool SGIX_calligraphic_fragment;
+        private static bool SGIX_clipmap;
+        private static bool SGIX_convolution_accuracy;
+        private static bool SGIX_depth_pass_instrument;
+        private static bool SGIX_depth_texture;
+        private static bool SGIX_flush_raster;
+        private static bool SGIX_fog_offset;
+        private static bool SGIX_fragment_lighting;
+        private static bool SGIX_framezoom;
+        private static bool SGIX_igloo_interface;
+        private static bool SGIX_instruments;
+        private static bool SGIX_interlace;
+        private static bool SGIX_ir_instrument1;
+        private static bool SGIX_list_priority;
+        private static bool SGIX_pixel_texture;
+        private static bool SGIX_pixel_tiles;
+        private static bool SGIX_polynomial_ffd;
+        private static bool SGIX_reference_plane;
+        private static bool SGIX_resample;
+        private static bool SGIX_scalebias_hint;
+        private static bool SGIX_shadow;
+        private static bool SGIX_shadow_ambient;
+        private static bool SGIX_sprite;
+        private static bool SGIX_subsample;
+        private static bool SGIX_tag_sample_buffer;
+        private static bool SGIX_texture_add_env;
+        private static bool SGIX_texture_coordinate_clamp;
+        private static bool SGIX_texture_lod_bias;
+        private static bool SGIX_texture_multi_buffer;
+        private static bool SGIX_texture_scale_bias;
+        private static bool SGIX_vertex_preclip;
+        private static bool SGIX_ycrcb;
+        private static bool SGIX_ycrcb_subsample;
+        private static bool SGIX_ycrcba;
+        private static bool SUN_convolution_border_modes;
+        private static bool SUN_global_alpha;
+        private static bool SUN_mesh_array;
+        private static bool SUN_slice_accum;
+        private static bool SUN_triangle_list;
+        private static bool SUN_vertex;
+        private static bool SUNX_constant_data;
+        private static bool WIN_phong_shading;
+        private static bool WIN_specular_fog;
+
+        #endregion
+    }
+}

StgSharp.Common/Graphics/OpenGL/glClampf.cs

@@ -0,0 +1,92 @@
+//-----------------------------------------------------------------------
+//-----------------------------------------------------------------------
+//     file="glClampf.cs"
+//     Project: StgSharp
+//     AuthorGroup: Nitload Space
+//     Copyright (c) Nitload Space. All rights reserved.
+//     
+//     Permission is hereby granted, free of charge, to any person 
+//     obtaining a copy of this software and associated documentation 
+//     files (the “Software”), to deal in the Software without restriction, 
+//     including without limitation the rights to use, copy, modify, merge,
+//     publish, distribute, sublicense, and/or sell copies of the Software, 
+//     and to permit persons to whom the Software is furnished to do so, 
+//     subject to the following conditions:
+//     
+//     The above copyright notice and 
+//     this permission notice shall be included in all copies 
+//     or substantial portions of the Software.
+//     
+//     THE SOFTWARE IS PROVIDED “AS IS”, 
+//     WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, 
+//     INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 
+//     FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. 
+//     IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, 
+//     DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, 
+//     ARISING FROM, OUT OF OR IN CONNECTION WITH 
+//     THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+//     
+//-----------------------------------------------------------------------
+//-----------------------------------------------------------------------
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Runtime.InteropServices;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace StgSharp.Internal
+{
+    /// <summary>
+    ///   OpenGL numeric type. An IEEE-754 floating-point value, clamped to the range [0,1].
+    /// </summary>
+    [StructLayout( LayoutKind.Sequential )]
+    public struct GLclampf
+    {
+
+        public float value;
+
+        public GLclampf( float a )
+        {
+            value = a;
+        }
+
+        public static explicit operator float( GLclampf v )
+        {
+            return v.value;
+        }
+
+        public static explicit operator GLclampf( float v )
+        {
+            return new GLclampf( v );
+        }
+
+    }
+
+    /// <summary>
+    ///   OpenGL numeric type. An IEEE-754 double precision floating-point value, clamped to the
+    ///   range [0,1].
+    /// </summary>
+    [StructLayout( LayoutKind.Sequential )]
+    public struct GLclampd
+    {
+
+        public double value;
+
+        public GLclampd( double a )
+        {
+            value = a;
+        }
+
+        public static explicit operator double( GLclampd v )
+        {
+            return v.value;
+        }
+
+        public static explicit operator GLclampd( double v )
+        {
+            return new GLclampd( v );
+        }
+
+    }
+}

StgSharp.Common/Graphics/OpenGL/glEnum.cs

@@ -0,0 +1,227 @@
+//-----------------------------------------------------------------------
+//-----------------------------------------------------------------------
+//     file="glEnum.cs"
+//     Project: StepVisualizer
+//     AuthorGroup: Nitload Space
+//     Copyright (c) Nitload Space. All rights reserved.
+//     
+//     Permission is hereby granted, free of charge, to any person 
+//     obtaining a copy of this software and associated documentation 
+//     files (the “Software”), to deal in the Software without restriction, 
+//     including without limitation the rights to use, copy, modify, merge,
+//     publish, distribute, sublicense, and/or sell copies of the Software, 
+//     and to permit persons to whom the Software is furnished to do so, 
+//     subject to the following conditions:
+//     
+//     The above copyright notice and 
+//     this permission notice shall be included in all copies 
+//     or substantial portions of the Software.
+//     
+//     THE SOFTWARE IS PROVIDED “AS IS”, 
+//     WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, 
+//     INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 
+//     FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. 
+//     IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, 
+//     DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, 
+//     ARISING FROM, OUT OF OR IN CONNECTION WITH 
+//     THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+//     
+//-----------------------------------------------------------------------
+//-----------------------------------------------------------------------
+using System.Runtime.CompilerServices;
+
+namespace StgSharp.Graphics.OpenGL
+{
+    public enum PixelChannelLayout
+    {
+
+        UByte = glConst.UNSIGNED_BYTE,
+        Byte = glConst.BYTE,
+        UShort = glConst.UNSIGNED_SHORT,
+        Short = glConst.SHORT,
+        UInt = glConst.UNSIGNED_INT,
+        Int = glConst.INT,
+        Float = glConst.FLOAT,
+        UByte332 = glConst.UNSIGNED_BYTE_3_3_2,
+        UByte233Rev = glConst.UNSIGNED_BYTE_2_3_3_REV,
+        UShort565 = glConst.UNSIGNED_SHORT_5_6_5,
+        UShort565Rev = glConst.UNSIGNED_SHORT_5_6_5_REV,
+        UShort4444 = glConst.UNSIGNED_SHORT_4_4_4_4,
+        UShort4444Rev = glConst.UNSIGNED_SHORT_4_4_4_4_REV,
+        UShort5551 = glConst.UNSIGNED_SHORT_5_5_5_1,
+        UShort1555Rev = glConst.UNSIGNED_SHORT_1_5_5_5_REV,
+        UInt8888 = glConst.UNSIGNED_INT_8_8_8_8,
+        UInt8888Rev = glConst.UNSIGNED_INT_8_8_8_8_REV,
+        UInt1010102 = glConst.UNSIGNED_INT_10_10_10_2,
+        UInt2101010Rev = glConst.UNSIGNED_INT_2_10_10_10_REV
+
+    }
+
+    public enum FaceMode
+    {
+
+        Point = glConst.POINT,
+        Line = glConst.LINE,
+        Fill = glConst.FILL
+
+    }
+
+    public enum FrameBufferStatus
+    {
+
+        Complete = glConst.FRAMEBUFFER_COMPLETE, // GL_FRAMEBUFFER_COMPLETE
+        IncompleteAttachment = glConst.FRAMEBUFFER_INCOMPLETE_ATTACHMENT, // GL_FRAMEBUFFER_INCOMPLETE_ATTACHMENT
+        IncompleteMissingAttachment = glConst.FRAMEBUFFER_INCOMPLETE_MISSING_ATTACHMENT, // GL_FRAMEBUFFER_INCOMPLETE_MISSING_ATTACHMENT
+        IncompleteDrawBuffer = glConst.FRAMEBUFFER_INCOMPLETE_DRAW_BUFFER, // GL_FRAMEBUFFER_INCOMPLETE_DRAW_BUFFER
+        IncompleteReadBuffer = glConst.FRAMEBUFFER_INCOMPLETE_READ_BUFFER, // GL_FRAMEBUFFER_INCOMPLETE_READ_BUFFER
+        Unsupported = glConst.FRAMEBUFFER_UNSUPPORTED, // GL_FRAMEBUFFER_UNSUPPORTED
+        IncompleteMultisample = glConst.FRAMEBUFFER_INCOMPLETE_MULTISAMPLE, // GL_FRAMEBUFFER_INCOMPLETE_MULTISAMPLE
+        IncompleteLayerTargets = glConst.FRAMEBUFFER_INCOMPLETE_LAYER_TARGETS // GL_FRAMEBUFFER_INCOMPLETE_LAYER_TARGETS
+
+    }
+
+    public enum FrameBufferChannel
+    {
+
+        STENCIL_INDEX = glConst.STENCIL_INDEX,
+        DEPTH_COMPONENT = glConst.DEPTH_COMPONENT,
+        DEPTH_STENCIL = glConst.DEPTH_STENCIL,
+        RED = glConst.RED,
+        GREEN = glConst.GREEN,
+        BLUE = glConst.BLUE,
+        RGB = glConst.RGB,
+        BGR = glConst.BGR,
+        RGBA = glConst.RGBA,
+        BGRA = glConst.BGRA
+
+    }
+
+    public enum FrameBufferAttachment
+    {
+
+        Color = glConst.COLOR_ATTACHMENT0,
+        Depth = glConst.DEPTH_ATTACHMENT,
+        Stencil = glConst.STENCIL_ATTACHMENT,
+        DepthAndStencil = glConst.DEPTH_STENCIL_ATTACHMENT,
+
+    }
+
+    public enum Texture2DTarget
+    {
+
+        Texture2D = glConst.TEXTURE_2D,
+        ProxyTexture2D = glConst.PROXY_TEXTURE_2D,
+        Texture1DArray = glConst.TEXTURE_1D_ARRAY,
+        ProxyTexture1DArray = glConst.PROXY_TEXTURE_1D_ARRAY,
+        TextureRectangle = glConst.TEXTURE_RECTANGLE,
+        ProxyTextureRectangle = glConst.PROXY_TEXTURE_RECTANGLE,
+        TextureCubeMapPositiveX = glConst.TEXTURE_CUBE_MAP_POSITIVE_X,
+        TextureCubeMapNegativeX = glConst.TEXTURE_CUBE_MAP_NEGATIVE_X,
+        TextureCubeMapPositiveY = glConst.TEXTURE_CUBE_MAP_POSITIVE_Y,
+        TextureCubeMapNegativeY = glConst.TEXTURE_CUBE_MAP_NEGATIVE_Y,
+        TextureCubeMapPositiveZ = glConst.TEXTURE_CUBE_MAP_POSITIVE_Z,
+        TextureCubeMapNegativeZ = glConst.TEXTURE_CUBE_MAP_NEGATIVE_Z,
+        ProxyTextureCubeMap = glConst.PROXY_TEXTURE_CUBE_MAP
+
+    }
+
+    public enum RenderBufferInternalFormat : uint
+    {
+
+        RGBA8 = glConst.RGBA8,
+        Depth24_Stencil8 = glConst.DEPTH24_STENCIL8,
+
+    }
+
+    public enum glOperation : uint
+    {
+
+        StencilTest = glConst.STENCIL_TEST,
+        DepthTest = glConst.DEPTH_TEST,
+        PolygonOffsetFill = glConst.POLYGON_OFFSET_FILL,
+        PolygonOffsetLine = glConst.POLYGON_OFFSET_LINE,
+        PolygonOffsetPoint = glConst.POLYGON_OFFSET_POINT,
+
+    }
+
+    #pragma warning disable CA1008
+    public enum ShaderType : int
+    #pragma warning restore CA1008
+    {
+
+        Fragment = glConst.FRAGMENT_SHADER,
+        Vertex = glConst.VERTEX_SHADER,
+        Compute = glConst.COMPUTE_SHADER,
+        Geometry = glConst.GEOMETRY_SHADER,
+
+    }
+
+    #pragma warning disable CA1008
+    public enum BufferType : int
+    #pragma warning restore CA1008
+    {
+
+        ArrayBuffer = glConst.ARRAY_BUFFER,
+        ElementArrayBuffer = glConst.ELEMENT_ARRAY_BUFFER,
+        AtomicCounterBuffer = glConst.ATOMIC_COUNTER_BUFFER,
+        CopyHeadBuffer = glConst.COPY_READ_BUFFER,
+        COPY_WRITE_BUFFER = glConst.COPY_WRITE_BUFFER,
+        DISPATCH_INDIRECT_BUFFER = glConst.DISPATCH_INDIRECT_BUFFER,
+        DRAW_INDIRECT_BUFFER = glConst.DRAW_INDIRECT_BUFFER,
+        PIXEL_PACK_BUFFER = glConst.PIXEL_PACK_BUFFER,
+        PIXEL_UNPACK_BUFFER = glConst.PIXEL_UNPACK_BUFFER,
+        QUERY_BUFFER = glConst.QUERY_BUFFER,
+        ShaderStorageBuffer = glConst.SHADER_STORAGE_BUFFER,
+        TEXTURE_BUFFER = glConst.TEXTURE_BUFFER,
+        TRANSFORM_FEEDBACK_BUFFER = glConst.TRANSFORM_FEEDBACK_BUFFER,
+        UNIFORM_BUFFER = glConst.UNIFORM_BUFFER,
+
+    }
+
+    #pragma warning disable CA1008
+    public enum BufferUsage : int
+    #pragma warning restore CA1008
+    {
+
+        StreamDraw = 0x88E0,
+        StreamRead = 0x88E1,
+        StreamCopy = 0x88E2,
+        StaticDraw = 0x88E4,
+        StaticRead = 0x88E5,
+        StaticCopy = 0x88E6,
+        DynamicDraw = 0x88E8,
+        DynamicRead = 0x88E9,
+        DynamicCopy = 0x88EA
+
+    }
+
+    public enum MaskBufferBit
+    {
+
+        COLOR = glConst.COLOR_BUFFER_BIT,
+        DEPTH = glConst.DEPTH_BUFFER_BIT,
+        STENCIL = glConst.STENCIL_BUFFER_BIT,
+
+    }
+
+    public enum GeometryType : uint
+    {
+
+        POINTS = 0x0000,
+        LINES = 0x0001,
+        LINE_LOOP = 0x0002,
+        LINE_STRIP = 0x0003,
+        TRIANGLES = 0x0004,
+        TRIANGLE_STRIP = 0x0005,
+        TRIANGLE_FAN = 0x0006
+
+    }
+
+    public enum TextureFiltering
+    {
+
+        Nearest = 0x2600,
+        Linear = 0x2601
+
+    }
+}

StgSharp.Common/Graphics/OpenGL/glException.cs

@@ -0,0 +1,104 @@
+//-----------------------------------------------------------------------
+//-----------------------------------------------------------------------
+//     file="glException.cs"
+//     Project: StgSharp
+//     AuthorGroup: Nitload Space
+//     Copyright (c) Nitload Space. All rights reserved.
+//     
+//     Permission is hereby granted, free of charge, to any person 
+//     obtaining a copy of this software and associated documentation 
+//     files (the “Software”), to deal in the Software without restriction, 
+//     including without limitation the rights to use, copy, modify, merge,
+//     publish, distribute, sublicense, and/or sell copies of the Software, 
+//     and to permit persons to whom the Software is furnished to do so, 
+//     subject to the following conditions:
+//     
+//     The above copyright notice and 
+//     this permission notice shall be included in all copies 
+//     or substantial portions of the Software.
+//     
+//     THE SOFTWARE IS PROVIDED “AS IS”, 
+//     WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, 
+//     INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 
+//     FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. 
+//     IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, 
+//     DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, 
+//     ARISING FROM, OUT OF OR IN CONNECTION WITH 
+//     THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+//     
+//-----------------------------------------------------------------------
+//-----------------------------------------------------------------------
+using System;
+using System.Collections.Generic;
+using System.Diagnostics;
+using System.IO;
+using System.Runtime.CompilerServices;
+using System.Runtime.Serialization;
+using System.Text;
+
+namespace StgSharp.Graphics.OpenGL
+{
+    public sealed class GlErrorOverflowException : Exception
+    {
+
+        public GlErrorOverflowException( int errorCount, uint errorCode )
+            : base(
+            "Too many opengl error detected at certain position. " + $"The amount of errors exceeds {errorCount}. " + $"Code of the last error is {errorCode}" ) { }
+
+    }
+
+    public sealed class GlExecutionException : Exception
+    {
+
+        public GlExecutionException( uint errorCode )
+            : base( $"Critical OpenGL error: {errorCode}" ) { }
+
+    }
+
+    public sealed class GlArrayFormatException : Exception
+    {
+
+        internal GlArrayFormatException( string message ) : base( message ) { }
+
+        internal GlArrayFormatException( SerializationInfo info, StreamingContext context )
+            : base( info, context ) { }
+
+        internal GlArrayFormatException( string message, Exception innerException )
+            : base( message, innerException ) { }
+
+        public GlArrayFormatException( PixelChannelLayout layout, string arrayname )
+            : base( $"{arrayname} cannot be used as layout of {layout}" ) { }
+
+    }
+
+    public static partial class GlHelper
+    {
+
+        public static bool CheckArrayFormat( this Array array, PixelChannelLayout layout )
+        {
+            return layout switch
+            {
+                PixelChannelLayout.Byte or PixelChannelLayout.UByte332 or PixelChannelLayout.UByte233Rev => ( array is byte[] ) ||
+                                                                                                            ( array is sbyte[] ),
+                PixelChannelLayout.Short => array is short[],
+                PixelChannelLayout.UShort => array is ushort[],
+                PixelChannelLayout.Int => array is int[],
+                PixelChannelLayout.Float => array is float[],
+                PixelChannelLayout.UShort4444 => ( array is ushort[] ) || ( array is byte[] ),
+                PixelChannelLayout.UByte => ( array is byte[] ) || ( array is sbyte[] ),
+                PixelChannelLayout.UInt => array is uint[],
+                PixelChannelLayout.UShort565 or
+                PixelChannelLayout.UShort565Rev or
+                PixelChannelLayout.UShort4444Rev or
+                PixelChannelLayout.UShort5551 or
+                PixelChannelLayout.UShort1555Rev => array is ushort[],
+                PixelChannelLayout.UInt8888Rev or
+                PixelChannelLayout.UInt1010102 or
+                PixelChannelLayout.UInt2101010Rev => array is int[],
+                PixelChannelLayout.UInt8888 => array is uint[] or byte[],
+                _ => false,
+            };
+        }
+
+    }
+}

StgSharp.Common/Graphics/OpenGL/glFucntionSourceManager.cs

@@ -0,0 +1,93 @@
+//-----------------------------------------------------------------------
+//-----------------------------------------------------------------------
+//     file="glFucntionSourceManager.cs"
+//     Project: StgSharp
+//     AuthorGroup: Nitload Space
+//     Copyright (c) Nitload Space. All rights reserved.
+//     
+//     Permission is hereby granted, free of charge, to any person 
+//     obtaining a copy of this software and associated documentation 
+//     files (the ¡°Software¡±), to deal in the Software without restriction, 
+//     including without limitation the rights to use, copy, modify, merge,
+//     publish, distribute, sublicense, and/or sell copies of the Software, 
+//     and to permit persons to whom the Software is furnished to do so, 
+//     subject to the following conditions:
+//     
+//     The above copyright notice and 
+//     this permission notice shall be included in all copies 
+//     or substantial portions of the Software.
+//     
+//     THE SOFTWARE IS PROVIDED ¡°AS IS¡±, 
+//     WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, 
+//     INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 
+//     FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. 
+//     IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, 
+//     DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, 
+//     ARISING FROM, OUT OF OR IN CONNECTION WITH 
+//     THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+//     
+//-----------------------------------------------------------------------
+//-----------------------------------------------------------------------
+using StgSharp;
+
+using System;
+using System.Collections.Concurrent;
+using System.Collections.Generic;
+
+namespace StgSharp.Graphics.OpenGL
+{
+    public partial class OpenGLFunction
+    {
+
+        private Lazy<int> textureUnitCountGetter;
+        private Lazy<ConcurrentQueue<TextureUnit>> unusedTextureImageUintInitilizing;
+
+        public int TextureUnitCount
+        {
+            get => textureUnitCountGetter.Value;
+        }
+
+        private ConcurrentQueue<TextureUnit> UnusedTextureImageUint
+        {
+            get => unusedTextureImageUintInitilizing.Value;
+        }
+
+        internal void ReturnAvailableUnit( IEnumerable<TextureUnit> source )
+        {
+            int v = glConst.TEXTURE0 + TextureUnitCount;
+            foreach( TextureUnit unit in source )
+            {
+                if( ( int )unit > v ) {
+                    throw new InvalidOperationException(
+                        "Source contains texture unit beyond context support." );
+                }
+            }
+        }
+
+        internal int TryGetAvailableTextureUnit( int count, out IEnumerable<TextureUnit> result )
+        {
+            result = new Queue<TextureUnit>();
+            for( int i = 0; i < count; i++ )
+            {
+                if( UnusedTextureImageUint.TryDequeue( out TextureUnit unit ) )
+                {
+                    ( result as Queue<TextureUnit> )!.Enqueue( unit );
+                } else
+                {
+                    return i;
+                }
+            }
+            return count;
+        }
+
+        private ConcurrentQueue<TextureUnit> InitializeUnusedTextureImageUint()
+        {
+            ConcurrentQueue<TextureUnit> result = new ConcurrentQueue<TextureUnit>();
+            for( int index = 0; index < TextureUnitCount; index++ ) {
+                result.Enqueue( ( TextureUnit )( glConst.TEXTURE0 + index ) );
+            }
+            return result;
+        }
+
+    }
+}

StgSharp.Common/Graphics/OpenGL/glFunction.cs

@@ -0,0 +1,832 @@
+//-----------------------------------------------------------------------
+// -----------------------------------------------------------------------
+// file="glFunction.cs"
+// Project: StgSharp
+// AuthorGroup: Nitload Space
+// Copyright (c) Nitload Space. All rights reserved.
+//     
+// Permission is hereby granted, free of charge, to any person 
+// obtaining a copy of this software and associated documentation 
+// files (the “Software”), to deal in the Software without restriction, 
+// including without limitation the rights to use, copy, modify, merge,
+// publish, distribute, sublicense, and/or sell copies of the Software, 
+// and to permit persons to whom the Software is furnished to do so, 
+// subject to the following conditions:
+//     
+// The above copyright notice and 
+// this permission notice shall be included in all copies 
+// or substantial portions of the Software.
+//     
+// THE SOFTWARE IS PROVIDED “AS IS”, 
+// WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, 
+// INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. 
+// IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, 
+// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, 
+// ARISING FROM, OUT OF OR IN CONNECTION WITH 
+// THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+//     
+// -----------------------------------------------------------------------
+// -----------------------------------------------------------------------
+using StgSharp.Graphics;
+using StgSharp.Internal;
+using StgSharp.Mathematics;
+
+using System;
+using System.Collections.Concurrent;
+using System.Collections.Generic;
+using System.Diagnostics;
+using System.Numerics;
+using System.Runtime.CompilerServices;
+using System.Runtime.ExceptionServices;
+using System.Runtime.InteropServices;
+using System.Text;
+using System.Threading;
+
+namespace StgSharp.Graphics.OpenGL
+{
+    public unsafe partial class OpenGLFunction
+    {
+
+        private static Dictionary<IntPtr, OpenGLFunction> contextToGLMap = new Dictionary<IntPtr, OpenGLFunction>(
+            );
+        private static ThreadLocal<OpenGLFunction> _currentGL = new ThreadLocal<OpenGLFunction>();
+        private OpenglContext* _context;
+
+        private Lazy<int> _attachmentColorRange;
+
+        private OpenGLFunction()
+        {
+            textureUnitCountGetter = new Lazy<int>(
+                () => GetMaskInteger(glConst.MAX_TEXTURE_IMAGE_UNITS));
+            unusedTextureImageUintInitilizing = new Lazy<ConcurrentQueue<TextureUnit>>(
+                InitializeUnusedTextureImageUint);
+            _attachmentColorRange = new Lazy<int>(
+                () => {
+                    return GetMaskInteger((uint)glConst.MAX_COLOR_ATTACHMENTS);
+                });
+        }
+
+        public int AttachmentColorRange
+        {
+            get => _attachmentColorRange.Value;
+        }
+
+        public static OpenGLFunction CurrentGL
+        {
+            get { return _currentGL.Value; }
+            internal set { _currentGL.Value = value; }
+        }
+
+        internal IntPtr ContextHandle => (IntPtr)_context;
+
+        protected ref OpenglContext Context
+        {
+            get
+            {
+                #if DEBUG
+                if ((IntPtr)_context == IntPtr.Zero)
+                {
+                    throw new NullReferenceException();
+                }
+                #endif
+                return ref (*_context);
+            }
+        }
+
+        [MethodImpl(MethodImplOptions.AggressiveInlining)]
+        public void ActiveTextureUnit(uint type)
+        {
+            Context.glActiveTexture(type);
+        }
+
+        [Conditional("DEBUG")]
+        public void Assert(bool shouldReportWhenNormal)
+        {
+            uint code = Context.glGetError();
+            if (code != glConst.NO_ERROR) {
+                throw new GlExecutionException(code);
+            }
+            if (shouldReportWhenNormal) {
+                Console.WriteLine("OpenGL runs normally");
+            }
+        }
+
+        [MethodImpl(MethodImplOptions.AggressiveInlining)]
+        public void AttachShader(GlHandle program, GlHandle shader)
+        {
+            Context.glAttachShader(program.Value, shader.Value);
+        }
+
+        [MethodImpl(MethodImplOptions.AggressiveInlining)]
+        public void BindBuffer(BufferType bufferType, GlHandle handle)
+        {
+            Context.glBindBuffer((uint)bufferType, handle.Value);
+        }
+
+        /// <summary>
+        ///   Bind a frame BufferHandle to a frame BufferHandle target Same function as <see
+        ///   href="https://docs._gl/gl3/glBindFramebuffer"> glBindFramebuffer </see>.
+        /// </summary>
+        /// <param _label="target">
+        ///   The frame BufferHandle target of the binding operation.
+        /// </param>
+        /// <param _label="handle">
+        ///   The handle of the frame BufferHandle object to bind.
+        /// </param>
+        [MethodImpl(MethodImplOptions.AggressiveInlining)]
+        public void BindFrameBuffer(FrameBufferTarget target, GlHandle handle)
+        {
+            Context.glBindFramebuffer((uint)target, handle.Value);
+        }
+
+        [MethodImpl(MethodImplOptions.AggressiveInlining)]
+        public void BindRenderBuffer(GlHandle handle)
+        {
+            Context.glBindRenderbuffer(glConst.RENDERBUFFER, handle.Value);
+        }
+
+        [MethodImpl(MethodImplOptions.AggressiveInlining)]
+        public void BindTexture(uint type, GlHandle texture)
+        {
+            Context.glBindTexture(type, texture.Value);
+        }
+
+        [MethodImpl(MethodImplOptions.AggressiveInlining)]
+        public void BindVertexArray(GlHandle handle)
+        {
+            Context.glBindVertexArray(handle.Value);
+        }
+
+        [MethodImpl(MethodImplOptions.AggressiveInlining)]
+        public FrameBufferStatus CheckFrameBufferStatus(FrameBufferTarget target)
+        {
+            return (FrameBufferStatus)Context.glCheckFramebufferStatus((uint)target);
+        }
+
+        [MethodImpl(MethodImplOptions.AggressiveInlining)]
+        public void Clear(MaskBufferBit mask)
+        {
+            Context.glClear((uint)mask);
+        }
+
+        [MethodImpl(MethodImplOptions.AggressiveInlining)]
+        public unsafe void ClearColor(float R, float G, float B, float A)
+        {
+            Context.glClearColor(R, G, B, A);
+        }
+
+        [MethodImpl(MethodImplOptions.AggressiveInlining)]
+        public void ClearError()
+        {
+            uint code = 0;
+            for (int i = 0; i < 1024; i++)
+            {
+                code = Context.glGetError();
+                if (code == 0) {
+                    return;
+                }
+
+                // Console.WriteLine(code);
+            }
+            foreach (ProcessThread thread in Process.GetCurrentProcess().Threads) {
+                Debugger.Break();
+            }
+            throw new GlErrorOverflowException(1024, code);
+        }
+
+        [MethodImpl(MethodImplOptions.AggressiveInlining)]
+        public unsafe void ClearGraphicError()
+        {
+            while (Context.glGetError() != 0) { }
+        }
+
+        [MethodImpl(MethodImplOptions.AggressiveInlining)]
+        public void CombineFrameBufferRenderBuffer(
+                    FrameBufferAttachment attachment,
+                    GlHandle rboHandle)
+        {
+            Context.glFramebufferRenderbuffer(
+                glConst.FRAMEBUFFER, (uint)attachment, glConst.RENDERBUFFER, rboHandle.Value);
+        }
+
+        [MethodImpl(MethodImplOptions.AggressiveInlining)]
+        public void CompileShader(GlHandle shaderhandle)
+        {
+            Context.glCompileShader(shaderhandle.Value);
+        }
+
+        [MethodImpl(MethodImplOptions.AggressiveInlining)]
+        public unsafe GlHandle CreateGraphicProgram()
+        {
+            return GlHandle.Alloc(Context.glCreateProgram());
+        }
+
+        [MethodImpl(MethodImplOptions.AggressiveInlining)]
+        public GlHandle CreateProgram()
+        {
+            return GlHandle.Alloc(Context.glCreateProgram());
+        }
+
+        [MethodImpl(MethodImplOptions.AggressiveInlining)]
+        public unsafe GlHandle[] CreateProgram(int count)
+        {
+            GlHandle[] h = new GlHandle[count];
+            for (int i = 0; i < count; i++) {
+                h.SetValue(i, Context.glCreateProgram());
+            }
+            return h;
+        }
+
+        [MethodImpl(MethodImplOptions.AggressiveInlining)]
+        public GlHandle[] CreateShaderSet(int count, ShaderType type)
+        {
+            GlHandle[] ret = new GlHandle[count];
+            uint t = (uint)type;
+            for (int i = 0; i < count; i++)
+            {
+                uint id = Context.glCreateShader(t);
+                if (id == 0)
+                {
+                    uint error = Context.glGetError();
+                    throw new InvalidOperationException($"Failed in creating shader: {error}");
+                }
+                ret[i] = GlHandle.Alloc(id);
+            }
+            return ret;
+        }
+
+        [MethodImpl(MethodImplOptions.AggressiveInlining)]
+        public unsafe void DeleteBuffer(GlHandle handle)
+        {
+            Context.glDeleteBuffers(1, (uint*)&handle);
+        }
+
+        [MethodImpl(MethodImplOptions.AggressiveInlining)]
+        public unsafe void DeleteBuffers(GlHandle[] handle)
+        {
+            if ((handle == null) || (handle.Length == 0)) {
+                throw new ArgumentNullException(nameof(handle));
+            }
+            fixed (GlHandle* hptr = handle)
+            {
+                uint* iptr = (uint*)hptr;
+                for (int i = 0; i < handle.Length; i++) {
+                    Context.glDeleteBuffers(1, iptr + i);
+                }
+            }
+        }
+
+        /// <summary>
+        ///   Delete a render BufferHandle object Very simlilar function as <see
+        ///   href="https://docs.gl/gl3/glDeleteRenderbuffers"> glDeleteRenderbuffers </see>. The
+        ///   only deifference is that this mehtod can only delete one renderbuffer at the same
+        ///   time.
+        /// </summary>
+        /// <param _label="bufferHandle">
+        ///   Handle to BufferHandle to delete.
+        /// </param>
+        public unsafe void DeleteRenderBuffer(GlHandle bufferHandle)
+        {
+            Context.glDeleteRenderbuffers(1, &bufferHandle.Value);
+        }
+
+        [MethodImpl(MethodImplOptions.AggressiveInlining)]
+        public unsafe void DeleteVertexArrays(GlHandle[] arrays)
+        {
+            fixed (GlHandle* hptr = arrays)
+            {
+                uint* iptr = (uint*)hptr;
+                for (int i = 0; i < arrays.Length; i++) {
+                    Context.glDeleteVertexArrays(1, iptr + i);
+                }
+            }
+        }
+
+        public void DepthMaskAccess(bool isWrite)
+        {
+            Context.glDepthMask(isWrite);
+        }
+
+        [MethodImpl(MethodImplOptions.AggressiveInlining)]
+        public void Disable(glOperation operation)
+        {
+            Context.glDisable((uint)operation);
+        }
+
+        [MethodImpl(MethodImplOptions.AggressiveInlining)]
+        public unsafe void DrawArrays(GeometryType mode, int first, uint count)
+        {
+            Context.glDrawArrays((uint)mode, first, count);
+        }
+
+        [MethodImpl(MethodImplOptions.AggressiveInlining)]
+        public unsafe void DrawElements(GeometryType mode, uint count, TypeCode type, IntPtr ptr)
+        {
+            uint a;
+            a = type switch
+            {
+                TypeCode.UInt32 => glConst.UNSIGNED_INT,
+                TypeCode.UInt16 => glConst.UNSIGNED_SHORT,
+                TypeCode.Byte => glConst.UNSIGNED_BYTE,
+                _ => throw new ArgumentException(
+                    $"{$"{$"Parameter error in parameter {nameof(type)} method DrawElements. "}"}{$"{$"Only {typeof(uint).Name},{typeof(ushort).Name},{typeof(byte).Name} types are supported."}"}")
+            };
+            Context.glDrawElements((uint)mode, count, a, (void*)ptr);
+        }
+
+        [MethodImpl(MethodImplOptions.AggressiveInlining)]
+        public void DrawElementsInstanced(
+                    GeometryType mode,
+                    uint count,
+                    TypeCode type,
+                    IntPtr ptr,
+                    uint amount)
+        {
+            uint a;
+            switch (type)
+            {
+                case TypeCode.UInt32:
+                    a = glConst.UNSIGNED_INT;
+                    break;
+
+                case TypeCode.UInt16:
+                    a = glConst.UNSIGNED_SHORT;
+                    break;
+
+                case TypeCode.Byte:
+                    a = glConst.UNSIGNED_BYTE;
+                    break;
+                default:
+                    InternalIO.InternalWriteLog(
+                        $"{$"Parameter error in parameter {nameof(type)} method DrawElements. "}{$"Only {typeof(uint).Name},{typeof(ushort).Name},{typeof(byte).Name} types are supported."}",
+                        LogType.Error);
+                    return;
+            }
+            Context.glDrawElementsInstanced((uint)mode, count, a, (void*)ptr, amount);
+        }
+
+        [MethodImpl(MethodImplOptions.AggressiveInlining)]
+        public void Enable(glOperation operation)
+        {
+            Context.glEnable((uint)operation);
+        }
+
+        [MethodImpl(MethodImplOptions.AggressiveInlining)]
+        public void FrameBufferTexture2d(
+                    FrameBufferTarget target,
+                    uint attachment,
+                    Texture2DTarget texTarget,
+                    GlHandle textureHandle,
+                    int level)
+        {
+            Context.glFramebufferTexture2D(
+                (uint)target, attachment, (uint)texTarget, textureHandle.Value, level);
+        }
+
+        [MethodImpl(MethodImplOptions.AggressiveInlining)]
+        public unsafe GlHandle[] GenBuffers(int count)
+        {
+            GlHandle[] h = new GlHandle[count];
+            fixed (GlHandle* hptr = h)
+            {
+                for (int i = 0; i < count; i++) {
+                    Context.glGenBuffers(count, ((uint*)hptr) + i);
+                }
+            }
+            return h;
+        }
+
+        [MethodImpl(MethodImplOptions.AggressiveInlining)]
+        public void GenerateMipmap(Texture2DTarget target)
+        {
+            Context.glGenerateMipmap((uint)target);
+        }
+
+        public unsafe GlHandle[] GenFrameBuffers(int count)
+        {
+            GlHandle[] h = new GlHandle[count];
+            fixed (GlHandle* hptr = h) {
+                Context.glGenFramebuffers(1, (uint*)hptr);
+            }
+            return h;
+        }
+
+        [MethodImpl(MethodImplOptions.AggressiveInlining)]
+        public unsafe GlHandle[] GenRenderBuffer(int count)
+        {
+            GlHandle[] h = new GlHandle[count];
+            fixed (GlHandle* hptr = h) {
+                Context.glGenRenderbuffers(count, (uint*)hptr);
+            }
+            return h;
+        }
+
+        [MethodImpl(MethodImplOptions.AggressiveInlining)]
+        public unsafe GlHandle[] GenTextures(int count)
+        {
+            GlHandle[] h = new GlHandle[count];
+            fixed (GlHandle* hptr = h) {
+                Context.glGenTextures(count, (uint*)hptr);
+            }
+            return h;
+        }
+
+        public unsafe GlHandle[] GenVertexArrays(int count)
+        {
+            GlHandle[] h = new GlHandle[count];
+            fixed (GlHandle* hptr = h) {
+                Context.glGenVertexArrays(count, (uint*)hptr);
+            }
+            return h;
+        }
+
+        [MethodImpl(MethodImplOptions.AggressiveInlining)]
+        public uint GetError()
+        {
+            return Context.glGetError();
+        }
+
+        public unsafe int GetMaskInteger(uint statusCode)
+        {
+            int ret = 0;
+            Context.glGetIntegerv(statusCode, &ret);
+            return ret;
+        }
+
+        public string GetShaderStatus(Shader s, int index, int key)
+        {
+            IntPtr sptr = IntPtr.Zero;
+            if (InternalIO.glCheckShaderStatus(ref Context, s.handle[index].Value, key,
+                                               ref sptr) ==
+                0) {
+                return Marshal.PtrToStringAnsi(sptr);
+            }
+            return string.Empty;
+        }
+
+        [MethodImpl(MethodImplOptions.AggressiveInlining)]
+        public unsafe void GetTextureImage<T>(
+                           Texture2DTarget target,
+                           int level,
+                           ImageChannel channel,
+                           PixelChannelLayout channelLayout,
+                           T[] dataStream)
+            where T: unmanaged,INumber<T>
+        {
+            #pragma warning disable CS8500
+            fixed (T* tptr = dataStream)
+            {
+                Context.glGetTexImage((uint)target, level, (uint)channel, (uint)channelLayout,
+                                      tptr);
+            }
+            #pragma warning restore CS8500
+        }
+
+        [MethodImpl(MethodImplOptions.AggressiveInlining)]
+        public void GetTextureLevelProperty(
+                    uint textureTypeMask,
+                    int level,
+                    uint propertyMask,
+                    out int propertyValue)
+        {
+            fixed (int* iptr = &propertyValue) {
+                Context.glGetTexLevelParameteriv(textureTypeMask, level, propertyMask, iptr);
+            }
+        }
+
+        [MethodImpl(MethodImplOptions.AggressiveInlining)]
+        public unsafe GlHandle GetUniformLocation(GlHandle program, string name)
+        {
+            byte[] code = Encoding.UTF8.GetBytes(name);
+            fixed (byte* ptr = code)
+            {
+                int ret = Context.glGetUniformLocation(program.Value, ptr);
+                #if DEBUG
+                if ((ret == glConst.INVALID_OPERATION) || (ret == glConst.INVALID_VALUE))
+                {
+                    throw new InvalidOperationException();
+                }
+                if (ret == -1) {
+                    throw new UniformEmptyReferenceException(nameof(program), name);
+                }
+                #endif
+                return GlHandle.SignedAlloc(ret);
+            }
+        }
+
+        [MethodImpl(MethodImplOptions.AggressiveInlining)]
+        public unsafe void LoadShaderSource(GlHandle shaderHandle, byte[] codeStream)
+        {
+            fixed (byte* streamPtr = codeStream) {
+                Context.glShaderSource(shaderHandle.Value, 1, &streamPtr, (void*)0);
+            }
+        }
+
+        public unsafe void LoadShaderSource(GlHandle shaderHandle, ReadOnlySpan<char> codeStream)
+        {
+            fixed (char* streamPtr = codeStream)
+            {
+                byte* bptr = (byte*)streamPtr;
+                Context.glShaderSource(shaderHandle.Value, 1, &bptr, (void*)0);
+            }
+        }
+
+        public unsafe void LoadShaderSource(GlHandle shaderHandle, ReadOnlySpan<byte> codeStream)
+        {
+            fixed (byte* streamPtr = codeStream)
+            {
+                byte* bptr = streamPtr;
+                Context.glShaderSource(shaderHandle.Value, 1, &bptr, (void*)0);
+            }
+        }
+
+        [MethodImpl(MethodImplOptions.AggressiveInlining)]
+        public void PolygonMode(FaceMode mode)
+        {
+            Context.glPolygonMode(glConst.FRONT_AND_BACK, (uint)mode);
+        }
+
+        [MethodImpl(MethodImplOptions.AggressiveInlining)]
+        public void PolygonOffset(float factor, float unit)
+        {
+            Context.glPolygonOffset(factor, unit);
+        }
+
+        [MethodImpl(MethodImplOptions.AggressiveInlining)]
+        public void ReadPixels(
+                    (int X, int Y) beginPosition,
+                    (int width, int height) size,
+                    FrameBufferChannel format,
+                    PixelChannelLayout dataType,
+                    ref byte[] stream)
+        {
+            fixed (byte* bptr = stream) {
+                Context.glReadPixels(
+                    beginPosition.X, beginPosition.Y, size.width, size.height, (uint)format,
+                    (uint)dataType, bptr);
+            }
+        }
+
+        public void RereadImage(
+                    in Image i,
+                    (int X, int Y) beginPosition,
+                    FrameBufferChannel format,
+                    PixelChannelLayout dataType)
+        {
+            byte[] pixels = i.PixelBuffer;
+            if (!pixels.CheckArrayFormat(dataType)) {
+                throw new GlArrayFormatException(dataType, "i.PixelArray");
+            }
+            fixed (byte* bptr = pixels) {
+                Context.glReadPixels(
+                    beginPosition.X, beginPosition.Y, i.Width, i.Height, (uint)format,
+                    (uint)dataType, bptr);
+            }
+            i.PixelUpdateCount++;
+        }
+
+        [MethodImpl(MethodImplOptions.AggressiveInlining)]
+        public unsafe void SetBufferData<T>(BufferType bufferType, T bufferData, BufferUsage usage)
+            where T: unmanaged
+        {
+            int size = Marshal.SizeOf<T>();
+            #pragma warning disable CS8500
+            T* p = &bufferData;
+            #pragma warning restore CS8500
+            Context.glBufferData((uint)bufferType, (IntPtr)size, (IntPtr)p, (uint)usage);
+        }
+
+        [MethodImpl(MethodImplOptions.AggressiveInlining)]
+        public unsafe void SetBufferData<T>(
+                           BufferType bufferType,
+                           T[] bufferArray,
+                           BufferUsage usage)
+            where T: unmanaged,INumber<T>
+        {
+            int size = bufferArray.Length * Marshal.SizeOf(typeof(T));
+            if (bufferArray == null) {
+                return;
+            }
+            #pragma warning disable CS8500
+            fixed (void* bufferPtr = bufferArray)
+            #pragma warning restore CS8500
+            {
+                Context.glBufferData((uint)bufferType, (IntPtr)size, (IntPtr)bufferPtr,
+                                     (uint)usage);
+            }
+        }
+
+        [MethodImpl(MethodImplOptions.AggressiveInlining)]
+        public unsafe void SetBufferData<T>(
+                           BufferType bufferType,
+                           ReadOnlySpan<T> bufferSpan,
+                           BufferUsage usage)
+            where T: unmanaged,INumber<T>
+        {
+            int size = bufferSpan.Length * Marshal.SizeOf(typeof(T));
+            if (bufferSpan == null) {
+                return;
+            }
+            #pragma warning disable CS8500
+            fixed (void* bufferPtr = bufferSpan)
+            #pragma warning restore CS8500
+            {
+                Context.glBufferData((uint)bufferType, (IntPtr)size, (IntPtr)bufferPtr,
+                                     (uint)usage);
+            }
+        }
+
+        [MethodImpl(MethodImplOptions.AggressiveInlining)]
+        public unsafe void SetBufferData<T>(
+                           BufferType bufferType,
+                           Span<T> bufferArray,
+                           BufferUsage usage)
+            where T: unmanaged, INumber<T>
+        {
+            int size = bufferArray.Length * Marshal.SizeOf(typeof(T));
+            if (bufferArray == null) {
+                return;
+            }
+
+            #pragma warning disable CS8500
+            fixed (void* bufferPtr = bufferArray)
+            #pragma warning restore CS8500
+            {
+                Context.glBufferData((uint)bufferType, (IntPtr)size, (IntPtr)bufferPtr,
+                                     (uint)usage);
+            }
+        }
+
+        [MethodImpl(MethodImplOptions.AggressiveInlining)]
+        public unsafe void SetBufferVectorData<T>(
+                           BufferType bufferType,
+                           ReadOnlySpan<T> bufferSpan,
+                           BufferUsage usage)
+            where T: unmanaged, IFixedVector<T>
+        {
+            int size = bufferSpan.Length * Marshal.SizeOf(typeof(T));
+            #pragma warning disable CS8500
+            fixed (void* bufferPtr = bufferSpan)
+            #pragma warning restore CS8500
+            {
+                Context.glBufferData((uint)bufferType, (IntPtr)size, (IntPtr)bufferPtr,
+                                     (uint)usage);
+            }
+        }
+
+        [MethodImpl(MethodImplOptions.AggressiveInlining)]
+        public unsafe void SetBufferVectorData<T>(
+                           BufferType bufferType,
+                           T[] bufferArray,
+                           BufferUsage usage)
+            where T: unmanaged, IFixedVector<T>
+        {
+            int size = bufferArray.Length * Marshal.SizeOf(typeof(T));
+            if (bufferArray == null) {
+                return;
+            }
+            #pragma warning disable CS8500
+            fixed (void* bufferPtr = bufferArray)
+            #pragma warning restore CS8500
+            {
+                Context.glBufferData((uint)bufferType, (IntPtr)size, (IntPtr)bufferPtr,
+                                     (uint)usage);
+            }
+        }
+
+        [MethodImpl(MethodImplOptions.AggressiveInlining)]
+        public unsafe void SetRenderBufferStorage(
+                           RenderBufferInternalFormat internalFormat,
+                           (int width, int height) size)
+        {
+            Context.glRenderbufferStorage(
+                glConst.RENDERBUFFER, (uint)internalFormat, size.width, size.height);
+        }
+
+        [MethodImpl(MethodImplOptions.AggressiveInlining)]
+        public unsafe void SetRenderBufferStorage(
+                           RenderBufferInternalFormat internalFormat,
+                           (uint width, uint height) size)
+        {
+            Context.glRenderbufferStorage(
+                glConst.RENDERBUFFER, (uint)internalFormat, (int)size.width, (int)size.height);
+        }
+
+        [MethodImpl(MethodImplOptions.AggressiveInlining)]
+        public void SetVertexAttribute(
+                    uint index,
+                    int size,
+                    TypeCode t,
+                    bool normalized,
+                    uint stride,
+                    int pointer)
+        {
+            uint type = InternalIO.GLtype[t];
+            Context.glVertexAttribPointer(
+                index, size, type, normalized ? 1 : 0, stride, (void*)pointer);
+            Context.glEnableVertexAttribArray(index);
+        }
+
+        [MethodImpl(MethodImplOptions.AggressiveInlining)]
+        public void TextureImage2d<T>(
+                    Texture2DTarget target,
+                    int level,
+                    ImageChannel sourceChannel,
+                    uint width,
+                    uint height,
+                    ImageChannel targetChannel,
+                    PixelChannelLayout type,
+                    T[] pixels)
+            where T: unmanaged, INumber<T>
+        {
+            #pragma warning disable CS8500
+            fixed (T* tptr = pixels)
+            {
+                T* ptr = ((pixels == null) || (pixels.Length == 0)) ? (T*)IntPtr.Zero : tptr;
+                Context.glTexImage2D(
+                    (uint)target, level, (uint)sourceChannel, width, height, 0, (uint)targetChannel,
+                    (uint)type, tptr);
+            }
+            #pragma warning restore CS8500
+        }
+
+        [MethodImpl(MethodImplOptions.AggressiveInlining)]
+        public void TextureImage2d<T>(
+                    Texture2DTarget target,
+                    int level,
+                    ImageChannel sourceChannel,
+                    uint width,
+                    uint height,
+                    ImageChannel targetChannel,
+                    PixelChannelLayout type,
+                    Span<T> pixelSpan)
+            where T: unmanaged, INumber<T>
+        {
+            #pragma warning disable CS8500
+            fixed (T* tptr = pixelSpan)
+            {
+                Context.glTexImage2D(
+                    (uint)target, level, (uint)sourceChannel, width, height, 0, (uint)targetChannel,
+                    (uint)type, tptr);
+            }
+            #pragma warning restore CS8500
+        }
+
+        [MethodImpl(MethodImplOptions.AggressiveInlining)]
+        public void TextureParameter(int target, uint pname, int param)
+        {
+            Context.glTexParameteri((uint)target, pname, param);
+        }
+
+        public static bool TryGetFunctionPackage(IntPtr handle, out OpenGLFunction functionPackage)
+        {
+            return contextToGLMap.TryGetValue(handle, out functionPackage);
+        }
+
+        [MethodImpl(MethodImplOptions.AggressiveInlining)]
+        public void UseProgram(GlHandle program)
+        {
+            Context.glUseProgram(program.Value);
+        }
+
+        [MethodImpl(MethodImplOptions.AggressiveInlining)]
+        public void VertexAttributeDivisor(uint layoutIndex, uint divisor)
+        {
+            Context.glVertexAttribDivisor(layoutIndex, divisor);
+        }
+
+        [MethodImpl(MethodImplOptions.AggressiveInlining)]
+        public void Viewport(int x, int y, uint width, uint height)
+        {
+            Context.glViewport(x, y, width, height);
+        }
+
+        [MethodImpl(MethodImplOptions.AggressiveInlining)]
+        public void WaitAccomplishment()
+        {
+            Context.glFinish();
+        }
+
+        internal static OpenGLFunction BuildGlFunctionPackage(IntPtr handle)
+        {
+            OpenGLFunction pack;
+            if (contextToGLMap.TryGetValue(handle, out pack)) {
+                return pack;
+            }
+            pack = new OpenGLFunction
+            {
+                _context = (OpenglContext*)handle
+            };
+            contextToGLMap.Add(handle, pack);
+            return pack;
+        }
+
+        ~OpenGLFunction()
+        {
+            contextToGLMap.Remove(ContextHandle);
+        }
+
+    }
+}
+

StgSharp.Common/Graphics/OpenGL/glHalfNV.cs

@@ -0,0 +1,72 @@
+//-----------------------------------------------------------------------
+//-----------------------------------------------------------------------
+//     file="glHalfNV.cs"
+//     Project: StepVisualizer
+//     AuthorGroup: Nitload Space
+//     Copyright (c) Nitload Space. All rights reserved.
+//     
+//     Permission is hereby granted, free of charge, to any person 
+//     obtaining a copy of this software and associated documentation 
+//     files (the “Software”), to deal in the Software without restriction, 
+//     including without limitation the rights to use, copy, modify, merge,
+//     publish, distribute, sublicense, and/or sell copies of the Software, 
+//     and to permit persons to whom the Software is furnished to do so, 
+//     subject to the following conditions:
+//     
+//     The above copyright notice and 
+//     this permission notice shall be included in all copies 
+//     or substantial portions of the Software.
+//     
+//     THE SOFTWARE IS PROVIDED “AS IS”, 
+//     WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, 
+//     INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 
+//     FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. 
+//     IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, 
+//     DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, 
+//     ARISING FROM, OUT OF OR IN CONNECTION WITH 
+//     THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+//     
+//-----------------------------------------------------------------------
+//-----------------------------------------------------------------------
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Runtime.InteropServices;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace StgSharp.Graphics.OpenGL
+{
+    [StructLayout( LayoutKind.Explicit, Size = 16 )]
+    public struct glHalfNV
+    {
+
+        [FieldOffset( 0 )] public short binary;
+
+        public glHalfNV( short bin )
+        {
+            binary = bin;
+        }
+
+        public static glHalfNV FromInt16( short x )
+        {
+            return new glHalfNV( x );
+        }
+
+        public static short ToInt16( glHalfNV half )
+        {
+            return half.binary;
+        }
+
+        public static explicit operator glHalfNV( short x )
+        {
+            return new glHalfNV( x );
+        }
+
+        public static explicit operator short( glHalfNV x )
+        {
+            return x.binary;
+        }
+
+    }
+}

StgSharp.Common/Graphics/OpenGL/glHandle.cs

@@ -0,0 +1,79 @@
+//-----------------------------------------------------------------------
+//-----------------------------------------------------------------------
+//     file="glHandle.cs"
+//     Project: StepVisualizer
+//     AuthorGroup: Nitload Space
+//     Copyright (c) Nitload Space. All rights reserved.
+//     
+//     Permission is hereby granted, free of charge, to any person 
+//     obtaining a copy of this software and associated documentation 
+//     files (the “Software”), to deal in the Software without restriction, 
+//     including without limitation the rights to use, copy, modify, merge,
+//     publish, distribute, sublicense, and/or sell copies of the Software, 
+//     and to permit persons to whom the Software is furnished to do so, 
+//     subject to the following conditions:
+//     
+//     The above copyright notice and 
+//     this permission notice shall be included in all copies 
+//     or substantial portions of the Software.
+//     
+//     THE SOFTWARE IS PROVIDED “AS IS”, 
+//     WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, 
+//     INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 
+//     FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. 
+//     IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, 
+//     DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, 
+//     ARISING FROM, OUT OF OR IN CONNECTION WITH 
+//     THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+//     
+//-----------------------------------------------------------------------
+//-----------------------------------------------------------------------
+using System;
+using System.Collections.Generic;
+using System.Data.Common;
+using System.Linq;
+using System.Runtime.CompilerServices;
+using System.Runtime.InteropServices;
+using System.Runtime.Versioning;
+using System.Security.AccessControl;
+using System.Security.Cryptography;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace StgSharp.Graphics.OpenGL
+{
+    [StructLayout( LayoutKind.Explicit, Size = 4 )]
+    public struct GlHandle
+    {
+
+        [FieldOffset( 0 )] internal int SignedValue;
+        [FieldOffset( 0 )] internal uint Value;
+
+        public static GlHandle Zero
+        {
+            get => new GlHandle
+            {
+                Value = 0
+            };
+        }
+
+        [MethodImpl( MethodImplOptions.AggressiveInlining )]
+        public static GlHandle Alloc( uint value )
+        {
+            return new GlHandle
+            {
+                Value = value
+            };
+        }
+
+        [MethodImpl( MethodImplOptions.AggressiveInlining )]
+        public static GlHandle SignedAlloc( int value )
+        {
+            return new GlHandle
+            {
+                SignedValue = value
+            };
+        }
+
+    }
+}

StgSharp.Common/Graphics/OpenGL/glRenderObjectGenrator.cs

@@ -0,0 +1,123 @@
+//-----------------------------------------------------------------------
+//-----------------------------------------------------------------------
+//     file="glRenderObjectGenrator.cs"
+//     Project: StgSharp
+//     AuthorGroup: Nitload Space
+//     Copyright (c) Nitload Space. All rights reserved.
+//     
+//     Permission is hereby granted, free of charge, to any person 
+//     obtaining a copy of this software and associated documentation 
+//     files (the “Software”), to deal in the Software without restriction, 
+//     including without limitation the rights to use, copy, modify, merge,
+//     publish, distribute, sublicense, and/or sell copies of the Software, 
+//     and to permit persons to whom the Software is furnished to do so, 
+//     subject to the following conditions:
+//     
+//     The above copyright notice and 
+//     this permission notice shall be included in all copies 
+//     or substantial portions of the Software.
+//     
+//     THE SOFTWARE IS PROVIDED “AS IS”, 
+//     WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, 
+//     INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 
+//     FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. 
+//     IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, 
+//     DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, 
+//     ARISING FROM, OUT OF OR IN CONNECTION WITH 
+//     THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+//     
+//-----------------------------------------------------------------------
+//-----------------------------------------------------------------------
+using System;
+using System.Collections.Concurrent;
+using System.Collections.Generic;
+using System.Linq;
+using System.Runtime.CompilerServices;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace StgSharp.Graphics.OpenGL
+{
+    public partial class glRender
+    {
+
+        [MethodImpl( MethodImplOptions.AggressiveInlining )]
+        protected AutoTextureGL CreateAutoTexture( int count )
+        {
+            return new AutoTextureGL( count, this );
+        }
+
+        /// <summary>
+        ///   Create a set of <see cref="ElementBuffer" />.
+        /// </summary>
+        /// <param _label="count">
+        ///   Amount of EBO to be created.
+        /// </param>
+        /// <returns>
+        ///
+        /// </returns>
+        [MethodImpl( MethodImplOptions.AggressiveInlining )]
+        protected ElementBuffer CreateElementBuffer( int count )
+        {
+            return new ElementBuffer( count, this );
+        }
+
+        [MethodImpl( MethodImplOptions.AggressiveInlining )]
+        protected FrameBuffer CreateFrameBuffer( int count )
+        {
+            return new FrameBuffer( count, this );
+        }
+
+        [MethodImpl( MethodImplOptions.AggressiveInlining )]
+        protected RenderBuffer CreateRenderBuffer( int count )
+        {
+            return new RenderBuffer( count, this );
+        }
+
+        /// <summary>
+        ///   Create a sets of <see cref="TextureGL" />
+        /// </summary>
+        /// <param _label="count">
+        ///   Amount of textures to be created.
+        /// </param>
+        /// <returns>
+        ///
+        /// </returns>
+        [MethodImpl( MethodImplOptions.AggressiveInlining )]
+        protected TextureGL CreateTexture( int count )
+        {
+            return new TextureGL( count, this );
+        }
+
+        /// <summary>
+        ///   Create a set of <see cref="VertexArray" />.
+        /// </summary>
+        /// <param _label="count">
+        ///   Amount of VAO to be created.
+        /// </param>
+        /// <returns>
+        ///
+        /// </returns>
+        [MethodImpl( MethodImplOptions.AggressiveInlining )]
+        protected VertexArray CreateVertexArray( int count )
+        {
+            return new VertexArray( count, this );
+        }
+
+        /// <summary>
+        ///   Create a set of <see cref="VertexBuffer" />.
+        /// </summary>
+        /// <param _label="count">
+        ///   Amount of Object to be created.
+        /// </param>
+        /// <returns>
+        ///
+        /// </returns>
+        [MethodImpl( MethodImplOptions.AggressiveInlining )]
+        protected VertexBuffer CreateVertexBuffer( int count )
+        {
+            return new VertexBuffer( count, this );
+        }
+
+    }
+}

StgSharp.Common/Graphics/OpenGL/glRenderStream.cs

@@ -0,0 +1,185 @@
+//-----------------------------------------------------------------------
+// -----------------------------------------------------------------------
+// file="glRenderStream.cs"
+// Project: StgSharp
+// AuthorGroup: Nitload Space
+// Copyright (c) Nitload Space. All rights reserved.
+//     
+// Permission is hereby granted, free of charge, to any person 
+// obtaining a copy of this software and associated documentation 
+// files (the “Software”), to deal in the Software without restriction, 
+// including without limitation the rights to use, copy, modify, merge,
+// publish, distribute, sublicense, and/or sell copies of the Software, 
+// and to permit persons to whom the Software is furnished to do so, 
+// subject to the following conditions:
+//     
+// The above copyright notice and 
+// this permission notice shall be included in all copies 
+// or substantial portions of the Software.
+//     
+// THE SOFTWARE IS PROVIDED “AS IS”, 
+// WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, 
+// INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. 
+// IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, 
+// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, 
+// ARISING FROM, OUT OF OR IN CONNECTION WITH 
+// THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+//     
+// -----------------------------------------------------------------------
+// -----------------------------------------------------------------------
+using StgSharp.Mathematics;
+using StgSharp.Threading;
+
+using System;
+using System.Collections.Concurrent;
+using System.Collections.Generic;
+using System.Linq;
+using System.Reflection;
+using System.Runtime.CompilerServices;
+using System.Runtime.InteropServices;
+using System.Text;
+using System.Threading;
+using System.Threading.Tasks;
+
+namespace StgSharp.Graphics.OpenGL
+{
+    public abstract partial class glRender : RenderStream
+    {
+
+        private protected static readonly ConcurrentDictionary<glRender, Thread> renderToThread
+            = new ConcurrentDictionary<glRender, Thread>();
+
+        private OpenGLFunction _context;
+
+        protected internal OpenGLFunction GL
+        {
+            get { return _context; }
+        }
+
+        /// <summary>
+        ///   Initialize an opengl context and load all opengl functions.
+        /// </summary>
+        public unsafe void InitializeContext()
+        {
+            if (ContextHandle == default)
+            {
+                ContextHandle = Marshal.AllocHGlobal(Marshal.SizeOf(typeof(OpenglContext)));
+                OpenglContext* contextID = (OpenglContext*)ContextHandle;
+                contextID->glGetString = (delegate*<uint, IntPtr>)IntPtr.Zero;
+            }
+            if (GL == null) {
+                _context = OpenGLFunction.BuildGlFunctionPackage(ContextHandle);
+            }
+        }
+
+        /// <summary>
+        ///   Initialize an OpenGl viewPortDisplay if current form has not been binded to any
+        ///   viewPortDisplay.  and set the viewPortDisplay binded to current form as current OpenGL
+        ///   viewPortDisplay.
+        /// </summary>
+        /// <exception cref="Exception">
+        ///   Something goes wrong and World fails in creating a new OpenGL viewPortDisplay.
+        /// </exception>
+        public unsafe void MakeAsCurrentContext()
+        {
+            InternalIO.glfwMakeContextCurrent(CanvasHandle);
+            OpenGLFunction.CurrentGL = this.GL;
+        }
+
+        /// <inheritdoc />
+        public override void RenderEnd()
+        {
+            if (!renderToThread.TryGetValue(this, out Thread t) || t != Thread.CurrentThread) {
+                throw new InvalidOperationException(
+                    $"Current render has had been binded to thread {t!.ManagedThreadId}");
+            }
+            SwapBuffers();
+            renderToThread[this] = ThreadHelper.EmptyThread;
+            InternalIO.glfwMakeContextCurrent(IntPtr.Zero);
+            OpenGLFunction.CurrentGL = null;
+        }
+
+        /// <inheritdoc />
+        public override void RenderStart()
+        {
+            Thread current = Thread.CurrentThread;
+            if (!renderToThread.TryGetValue(this, out Thread t) || t == ThreadHelper.EmptyThread)
+            {
+                renderToThread[this] = current;
+                MakeAsCurrentContext();
+                return;
+            }
+            if (t != current) {
+                throw new InvalidOperationException(
+                    $"Current render has had been binded to thread {t!.ManagedThreadId}");
+            }
+        }
+
+        [MethodImpl(MethodImplOptions.AggressiveInlining)]
+        public override void SetSizeLimit(int minWidth, int minHeight, int maxWidth, int maxHeight)
+        {
+            InternalIO.glfwSetWindowSizeLimits(
+                this.CanvasHandle, minWidth, minHeight, maxWidth, maxHeight);
+        }
+
+        [MethodImpl(MethodImplOptions.AggressiveInlining)]
+        internal sealed override void PlatformSpecifiedInitialize()
+        {
+            InitializeContext();
+            MakeAsCurrentContext();
+            glManager.LoadOpenGLApiTo(BindedViewPortContext.GraphicHandle);
+        }
+
+        [MethodImpl(MethodImplOptions.AggressiveInlining)]
+        internal sealed override void Terminate()
+        {
+            CustomizeDeinit();
+        }
+
+        protected sealed override Uniform<Matrix44> NativeCameraUniform(
+                                                    ShaderProgram source,
+                                                    string name)
+        {
+            NativeCamera.GainAllUniforms(source, name);
+            return NativeCamera.convertedUniform;
+        }
+
+        [MethodImpl(MethodImplOptions.AggressiveInlining)]
+        protected sealed override void NativeCameraViewRange(
+                                       Radius fieldOfRange,
+                                       Vec2 offset,
+                                       (float frontDepth, float backDepth) viewDepth)
+        {
+            NativeCamera.SetViewRange(fieldOfRange, this.Size, offset, viewDepth);
+        }
+
+        [MethodImpl(MethodImplOptions.AggressiveInlining)]
+        protected sealed override void NativeCameraViewTarget(
+                                       Vec3 position,
+                                       Vec3 direction,
+                                       Vec3 up)
+        {
+            NativeCamera.SetViewDirection(position, direction, up);
+        }
+
+        #region Key Control
+
+        protected KeyStatus CheckKey(KeyboardKey key)
+        {
+            return InternalIO.glfwGetKey(this.CanvasHandle, (int)key);
+        }
+
+        protected KeyStatus CheckKey(Mouse key)
+        {
+            return InternalIO.glfwGetKey(this.CanvasHandle, (int)key);
+        }
+
+        protected KeyStatus CheckKey(Joystick key)
+        {
+            return InternalIO.glfwGetKey(this.CanvasHandle, (int)key);
+        }
+
+        #endregion
+    }
+}

StgSharp.Common/Graphics/OpenGL/glRenderThreadSecurity.cs

@@ -0,0 +1,49 @@
+//-----------------------------------------------------------------------
+//-----------------------------------------------------------------------
+//     file="glRenderThreadSecurity.cs"
+//     Project: StgSharp
+//     AuthorGroup: Nitload Space
+//     Copyright (c) Nitload Space. All rights reserved.
+//     
+//     Permission is hereby granted, free of charge, to any person 
+//     obtaining a copy of this software and associated documentation 
+//     files (the “Software”), to deal in the Software without restriction, 
+//     including without limitation the rights to use, copy, modify, merge,
+//     publish, distribute, sublicense, and/or sell copies of the Software, 
+//     and to permit persons to whom the Software is furnished to do so, 
+//     subject to the following conditions:
+//     
+//     The above copyright notice and 
+//     this permission notice shall be included in all copies 
+//     or substantial portions of the Software.
+//     
+//     THE SOFTWARE IS PROVIDED “AS IS”, 
+//     WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, 
+//     INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 
+//     FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. 
+//     IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, 
+//     DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, 
+//     ARISING FROM, OUT OF OR IN CONNECTION WITH 
+//     THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+//     
+//-----------------------------------------------------------------------
+//-----------------------------------------------------------------------
+using System;
+using System.Collections.Concurrent;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading;
+using System.Threading.Tasks;
+
+namespace StgSharp.Graphics.OpenGL
+{
+    public partial class glRender
+    {
+
+        private static ConcurrentDictionary<Thread, glRender> threadLocalIndex
+            = new ConcurrentDictionary<Thread, glRender>();
+        private readonly SynchronizationContext mainThreadContext = SynchronizationContext.Current;
+
+    }
+}

StgSharp.Common/Graphics/OpenGL/glType.cs

@@ -0,0 +1,78 @@
+//-----------------------------------------------------------------------
+//-----------------------------------------------------------------------
+//     file="glType.cs"
+//     Project: StepVisualizer
+//     AuthorGroup: Nitload Space
+//     Copyright (c) Nitload Space. All rights reserved.
+//     
+//     Permission is hereby granted, free of charge, to any person 
+//     obtaining a copy of this software and associated documentation 
+//     files (the “Software”), to deal in the Software without restriction, 
+//     including without limitation the rights to use, copy, modify, merge,
+//     publish, distribute, sublicense, and/or sell copies of the Software, 
+//     and to permit persons to whom the Software is furnished to do so, 
+//     subject to the following conditions:
+//     
+//     The above copyright notice and 
+//     this permission notice shall be included in all copies 
+//     or substantial portions of the Software.
+//     
+//     THE SOFTWARE IS PROVIDED “AS IS”, 
+//     WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, 
+//     INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 
+//     FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. 
+//     IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, 
+//     DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, 
+//     ARISING FROM, OUT OF OR IN CONNECTION WITH 
+//     THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+//     
+//-----------------------------------------------------------------------
+//-----------------------------------------------------------------------
+using System;
+using System.Collections.Generic;
+using System.Collections.ObjectModel;
+using System.Runtime.InteropServices;
+using System.Text;
+
+namespace StgSharp.Internal.OpenGL
+{
+    internal delegate void GLVULKANPROCNV();
+
+    public unsafe struct glHandleARB
+    {
+
+        private dynamic value;
+
+        public unsafe glHandleARB( dynamic value )
+        {
+            if( !RuntimeInformation.IsOSPlatform( OSPlatform.OSX ) )
+            {
+                if( value.GetType().Name != "Uint32" )
+                {
+                    goto errorlog;
+                }
+                this.value = value;
+            } else
+            {
+                if( value.GetType().Name != "IntPtr" )
+                {
+                    goto errorlog;
+                }
+                this.value = value;
+            }
+
+            errorlog:
+            {
+                InternalIO.InternalWriteLog(
+                    $"{value.GetType().Name} does not match definination of GLhandlARB on OS {Environment.OSVersion.Platform} ",
+                    LogType.Error );
+            }
+        }
+
+        public static implicit operator uint( glHandleARB value )
+        {
+            return ( uint )value;
+        }
+
+    }
+}

StgSharp.Common/Graphics/Pixels.cs

@@ -0,0 +1,86 @@
+//-----------------------------------------------------------------------
+//-----------------------------------------------------------------------
+//     file="Pixels.cs"
+//     Project: StgSharp
+//     AuthorGroup: Nitload Space
+//     Copyright (c) Nitload Space. All rights reserved.
+//     
+//     Permission is hereby granted, free of charge, to any person 
+//     obtaining a copy of this software and associated documentation 
+//     files (the “Software”), to deal in the Software without restriction, 
+//     including without limitation the rights to use, copy, modify, merge,
+//     publish, distribute, sublicense, and/or sell copies of the Software, 
+//     and to permit persons to whom the Software is furnished to do so, 
+//     subject to the following conditions:
+//     
+//     The above copyright notice and 
+//     this permission notice shall be included in all copies 
+//     or substantial portions of the Software.
+//     
+//     THE SOFTWARE IS PROVIDED “AS IS”, 
+//     WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, 
+//     INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 
+//     FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. 
+//     IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, 
+//     DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, 
+//     ARISING FROM, OUT OF OR IN CONNECTION WITH 
+//     THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+//     
+//-----------------------------------------------------------------------
+//-----------------------------------------------------------------------
+using System;
+using System.Collections.Generic;
+using System.Runtime.InteropServices;
+using System.Text;
+
+namespace StgSharp.Graphics
+{
+    public interface IPixel
+    {
+
+        public float Red { get; set; }
+
+        public float Green { get; set; }
+
+        public float Blue { get; set; }
+
+        public float Alpha { get; set; }
+
+        internal int Size { get; }
+
+    }
+
+    [StructLayout( LayoutKind.Explicit, Size = 32 )]
+    public unsafe struct Pixel32RGBA : IPixel
+    {
+
+        [FieldOffset( 0 )] private unsafe fixed byte data[ 4 ];
+
+        public int Size => 4;
+
+        float IPixel.Alpha
+        {
+            get => data[ 3 ] / 256                    ;
+            set => data[ 3 ] = ( byte )( value * 256 );
+        }
+
+        float IPixel.Blue
+        {
+            get => data[ 2 ] / 256                    ;
+            set => data[ 2 ] = ( byte )( value * 256 );
+        }
+
+        float IPixel.Green
+        {
+            get => data[ 1 ] / 256                    ;
+            set => data[ 1 ] = ( byte )( value * 256 );
+        }
+
+        float IPixel.Red
+        {
+            get => data[ 0 ] / 256                    ;
+            set => data[ 0 ] = ( byte )( value * 256 );
+        }
+
+    }
+}

StgSharp.Common/Graphics/PlainGeometryMesh.cs

@@ -0,0 +1,94 @@
+//-----------------------------------------------------------------------
+// -----------------------------------------------------------------------
+// file="PlainGeometryMesh.cs"
+// Project: StgSharp
+// AuthorGroup: Nitload Space
+// Copyright (c) Nitload Space. All rights reserved.
+//     
+// Permission is hereby granted, free of charge, to any person 
+// obtaining a copy of this software and associated documentation 
+// files (the “Software”), to deal in the Software without restriction, 
+// including without limitation the rights to use, copy, modify, merge,
+// publish, distribute, sublicense, and/or sell copies of the Software, 
+// and to permit persons to whom the Software is furnished to do so, 
+// subject to the following conditions:
+//     
+// The above copyright notice and 
+// this permission notice shall be included in all copies 
+// or substantial portions of the Software.
+//     
+// THE SOFTWARE IS PROVIDED “AS IS”, 
+// WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, 
+// INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. 
+// IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, 
+// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, 
+// ARISING FROM, OUT OF OR IN CONNECTION WITH 
+// THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+//     
+// -----------------------------------------------------------------------
+// -----------------------------------------------------------------------
+using StgSharp.Geometries;
+using StgSharp.Mathematics;
+
+using System;
+using System.Collections.Generic;
+using System.Diagnostics.CodeAnalysis;
+using System.Linq;
+using System.Runtime.InteropServices;
+using System.Text;
+
+namespace StgSharp.Graphics
+{
+    public class PlainGeometryMesh
+    {
+
+        private PlainGeometry _shape;
+        private TextureProvider _texture;
+
+        public PlainGeometryMesh([NotNull] PlainGeometry shape, [NotNull] TextureProvider texture)
+        {
+            if (shape.VertexCount > texture.TextureCoordinate.Length) {
+                throw new ArgumentException(
+                    paramName:nameof(texture),
+                    message:"Amount of texture coordination is too less");
+            }
+            _texture = texture;
+            _shape = shape;
+        }
+
+        // private Image _texture;
+
+        public PlainGeometryMesh(PlainGeometry shape, Image texture, Vec2[] texCoord)
+        {
+            ArgumentNullException.ThrowIfNull(shape);
+            ArgumentNullException.ThrowIfNull(texCoord);
+
+            if (shape.VertexCount > texCoord.Length) {
+                throw new ArgumentException(
+                    paramName:nameof(texCoord),
+                    message:"Amount of texture coordination is too less");
+            }
+            _texture = new TextureProvider(texture, texCoord);
+        }
+
+        public Vec4[] VertexArray => _shape.VertexStream;
+
+        public Image TextureImage
+        {
+            get => _texture.ProvideImage();
+            internal set => _texture.ReadImage(value);
+        }
+
+        public ReadOnlySpan<int> MeshIndices => _shape.VertexIndices;
+
+        public ReadOnlySpan<Vec4> TextureCoord => MemoryMarshal.Cast<Vec2, Vec4>(
+            _texture.TextureCoordinate);
+
+        public PlainGeometryMesh Resize(PlainGeometry newShape)
+        {
+            return new PlainGeometryMesh(newShape, _texture);
+        }
+
+    }
+}

StgSharp.Common/Graphics/RenderStream.cs

@@ -0,0 +1,246 @@
+//-----------------------------------------------------------------------
+// -----------------------------------------------------------------------
+// file="RenderStream.cs"
+// Project: StgSharp
+// AuthorGroup: Nitload Space
+// Copyright (c) Nitload Space. All rights reserved.
+//     
+// Permission is hereby granted, free of charge, to any person 
+// obtaining a copy of this software and associated documentation 
+// files (the “Software”), to deal in the Software without restriction, 
+// including without limitation the rights to use, copy, modify, merge,
+// publish, distribute, sublicense, and/or sell copies of the Software, 
+// and to permit persons to whom the Software is furnished to do so, 
+// subject to the following conditions:
+//     
+// The above copyright notice and 
+// this permission notice shall be included in all copies 
+// or substantial portions of the Software.
+//     
+// THE SOFTWARE IS PROVIDED “AS IS”, 
+// WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, 
+// INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. 
+// IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, 
+// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, 
+// ARISING FROM, OUT OF OR IN CONNECTION WITH 
+// THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+//     
+// -----------------------------------------------------------------------
+// -----------------------------------------------------------------------
+using StgSharp.Graphics.OpenGL;
+using StgSharp.Mathematics;
+
+using StgSharp.MVVM;
+using StgSharp.Timing;
+
+using System;
+using System.Collections.Generic;
+using System.ComponentModel;
+using System.Diagnostics.CodeAnalysis;
+using System.Linq;
+using System.Runtime.CompilerServices;
+using System.Runtime.InteropServices;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace StgSharp.Graphics
+{
+    public abstract class RenderStream
+    {
+
+        private Camera nativeCamera;
+
+        private protected ViewPort primeArgs;
+        internal TimeSpanProvider _timeProvider;
+
+        public (int width, int height) Size
+        {
+            get => (Width, Height);
+        }
+
+        public abstract bool IsContextSharable { get; }
+
+        public int Height
+        {
+            get => primeArgs.Height;
+        }
+
+        public int Width
+        {
+            get => primeArgs.Width;
+        }
+
+        public IntPtr Monitor
+        {
+            get => primeArgs.Monitor;
+            internal set => primeArgs.Monitor = value;
+        }
+
+        public string Name
+        {
+            get => primeArgs.Name;
+        }
+
+        public ViewPort BindedViewPortContext
+        {
+            get => primeArgs;
+            internal set => primeArgs = value;
+        }
+
+        internal IntPtr CanvasHandle
+        {
+            get => primeArgs.ViewPortHandle;
+        }
+
+        internal IntPtr ContextHandle
+        {
+            get => primeArgs.GraphicHandle;
+            private protected set => primeArgs.GraphicHandle = value;
+        }
+
+        protected internal Camera NativeCamera
+        {
+            get => nativeCamera;
+            internal set => nativeCamera = value;
+        }
+
+        protected float FramePassed
+        {
+            get => _timeProvider.CurrentSpan;
+        }
+
+        protected int PassedFrames
+        {
+            get => _timeProvider.CurrentSpan;
+        }
+
+        protected float TimePassed
+        {
+            get => _timeProvider.CurrentSecond;
+        }
+
+        protected TimeSpanProvider TimeProvider
+        {
+            get => _timeProvider;
+        }
+
+        /// <summary>
+        ///   Set the Size limit of current form
+        /// </summary>
+        /// <param _label="minWidth">
+        ///   Minimum width of current form
+        /// </param>
+        /// <param _label="minHeight">
+        ///   Minimum height of current form
+        /// </param>
+        /// <param _label="maxWidth">
+        ///   Maximum width of current form
+        /// </param>
+        /// <param _label="maxHeight">
+        ///   Maximum height of current form
+        /// </param>
+        [MethodImpl(MethodImplOptions.AggressiveInlining)]
+        public abstract void SetSizeLimit(int minWidth, int minHeight, int maxWidth, int maxHeight);
+
+        public static TTarget ShareContextFrom<TSource, TTarget>([NotNull]TSource source)
+            where TSource: RenderStream
+            where TTarget: RenderStream, new()
+        {
+            TTarget target = new TTarget();
+            target.Initialize(source.BindedViewPortContext, source._timeProvider);
+            return target;
+        }
+
+        /**/
+        protected internal static void PollEvents()
+        {
+            InternalIO.glfwPollEvents();
+        }
+
+        private protected void SwapBuffers()
+        {
+            InternalIO.glfwSwapBuffers(CanvasHandle);
+        }
+
+        /**/
+
+        #region native camera operation
+
+        protected abstract void NativeCameraViewRange(
+                                Radius fieldOfRange,
+                                Vec2 offset,
+                                (float frontDepth, float backDepth) viewDepth);
+
+        protected abstract void NativeCameraViewTarget(Vec3 position, Vec3 direction, Vec3 up);
+
+        /// <summary>
+        ///   Get <see cref="Uniform{T}" />(TView is <see cref="Matrix44" />) uniform from a shader.
+        ///   This uniform will be used as projection matrix of this camera. Additionally, for
+        ///   multi- shader rendering, each shader requires a uniform,  so do not ignore return
+        ///   value of this method.
+        /// </summary>
+        /// <param _label="source">
+        ///   Shader using this camera
+        /// </param>
+        /// <param _label="name">
+        ///   ContextName of projection camera named in shader
+        /// </param>
+        /// <returns>
+        ///   <see cref="Uniform{T}" />(TView is <see cref="Matrix44" />) representing  projection
+        ///   matrix in shader program.
+        /// </returns>
+        protected abstract Uniform<Matrix44> NativeCameraUniform(ShaderProgram source, string name);
+
+        #endregion
+
+        #region internal operation
+
+        public void Initialize(ViewPort v, TimeSpanProvider timeProvider)
+        {
+            if (v == null) {
+                throw new ArgumentNullException(nameof(v));
+            }
+            primeArgs = v;
+            this._timeProvider = timeProvider;
+            nativeCamera = new Camera();
+            PlatformSpecifiedInitialize();
+            CustomizeInit();
+            InternalIO.glfwMakeContextCurrent(IntPtr.Zero);
+        }
+
+        internal abstract void PlatformSpecifiedInitialize();
+
+        internal abstract void Terminate();
+
+        #endregion
+
+        #region public operation
+
+        protected abstract void CustomizeDeinit();
+
+        protected abstract void CustomizeInit();
+
+        /// <summary>
+        ///   Marking the start of current render operations,  and set this renser context as
+        ///   current.
+        /// </summary>
+        public abstract void RenderStart();
+
+        /// <summary>
+        ///   Marking the end of current render operations,  and release the binding of this renser
+        ///   context to current,  making it available for another thread as current.
+        /// </summary>
+        public abstract void RenderEnd();
+
+        #endregion
+
+        #region public resource generator
+
+        protected abstract Shader CreateShaderSegment(ShaderType type, int count);
+
+        protected abstract ShaderProgram CreateShaderProgram();
+
+    #endregion
+    }
+}

StgSharp.Common/Graphics/ShaderEdit/ShaderGenerator.cs

@@ -0,0 +1,209 @@
+//-----------------------------------------------------------------------
+//-----------------------------------------------------------------------
+//     file="ShaderGenerator.cs"
+//     Project: StgSharp
+//     AuthorGroup: Nitload Space
+//     Copyright (c) Nitload Space. All rights reserved.
+//     
+//     Permission is hereby granted, free of charge, to any person 
+//     obtaining a copy of this software and associated documentation 
+//     files (the “Software”), to deal in the Software without restriction, 
+//     including without limitation the rights to use, copy, modify, merge,
+//     publish, distribute, sublicense, and/or sell copies of the Software, 
+//     and to permit persons to whom the Software is furnished to do so, 
+//     subject to the following conditions:
+//     
+//     The above copyright notice and 
+//     this permission notice shall be included in all copies 
+//     or substantial portions of the Software.
+//     
+//     THE SOFTWARE IS PROVIDED “AS IS”, 
+//     WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, 
+//     INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 
+//     FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. 
+//     IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, 
+//     DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, 
+//     ARISING FROM, OUT OF OR IN CONNECTION WITH 
+//     THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+//     
+//-----------------------------------------------------------------------
+//-----------------------------------------------------------------------
+using StgSharp.Graphics;
+using StgSharp.Graphics.OpenGL;
+using StgSharp.Mathematics;
+
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Runtime.Serialization;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace StgSharp.Graphics.ShaderEdit
+{
+    public class ShaderGenerator
+    {
+
+        private Dictionary<int, ShaderParameter> uniformDefine;
+        private List<string> codeList;
+        private List<ShaderFunction> usedShaderFunctions;
+
+        public Uniform<T> DefineUniform<T>( string name, int index ) where T:unmanaged
+        {
+            ShaderParameter p = new ShaderParameter( name, ShaderParameter.TypeMarshal<T>() );
+            uniformDefine.Add( index, p );
+
+            //return new Uniform<TView>();
+            throw new NotImplementedException();
+        }
+
+    }
+
+    public class ShaderFunction
+    {
+
+        private List<string> codeList;
+        private List<ShaderParameter> inputList;
+        private ShaderParameter outPut;
+        private string name;
+
+        public int ParameterCount => inputList.Count;
+
+        public void EmitCall(
+                    ShaderFunction function,
+                    ShaderParameter outPut,
+                    params ShaderParameter[] inputParams )
+        {
+            if( inputParams.Length != function.ParameterCount )
+            {
+                // Param list length not equal
+                throw new ArgumentException(
+                    "Provided parameters does not match function's parameter list." );
+            }
+            if( !ShaderParameter.IsSameType( outPut, function.outPut ) )
+            {
+                // Type of returning value not equal
+                throw new ArgumentException(
+                    "Provided parameters does not match function's parameter list." );
+            }
+            for( int i = 0; i < inputParams.Length; i++ )
+            {
+                if( !ShaderParameter.IsSameType( function.inputList[ i ], inputParams[ i ] ) )
+                {
+                    // Input type not match
+                    throw new InvalidCastException(
+                        "Provided parameters does not match function's parameter list." );
+                }
+            }
+            string codeLine = string.Empty;    // adding a line like " outvalue = Func(input1, input2,...); "
+            if( outPut != ShaderParameter.Void ) {
+                codeLine += $"{outPut.name} = ";
+            }
+            codeLine += $"{function.name}(";
+            foreach( ShaderParameter inputParam in inputParams ) {
+                codeLine += inputParam.name;
+            }
+            codeLine += ");\n";
+            codeList.Add( codeLine );
+        }
+
+    }
+
+    public class ShaderParameter
+    {
+
+        public static readonly ShaderParameter Void = new ShaderParameter(
+            string.Empty, InternalShaderType.Void );
+        internal readonly bool isReadOnly;
+        internal readonly InternalShaderType type;
+        internal readonly string name;
+
+        public ShaderParameter( string name, InternalShaderType type )
+        {
+            this.name = name;
+            this.type = type;
+            isReadOnly = false;
+        }
+
+        public static bool IsSameType( ShaderParameter param1, ShaderParameter param2 )
+        {
+            if( param1.type != InternalShaderType.Struct )
+            {
+                return param1.type == param2.type;
+            } else
+            {
+                throw new Exception( "Struct is currently not supported." );
+            }
+        }
+
+        public static InternalShaderType TypeMarshal<T>() where T:unmanaged
+        {
+            switch( Type.GetTypeCode( typeof( T ) ) )
+            {
+                case TypeCode.Single:
+                    return InternalShaderType.Float;
+                case TypeCode.Double:
+                    return InternalShaderType.Double;
+                case TypeCode.Int32:
+                    return InternalShaderType.Int;
+                case TypeCode.UInt32:
+                    return InternalShaderType.UInt;
+                default:
+                    break;
+            }
+            switch( typeof( T ).Name )
+            {
+                case "vec4d":
+                    return InternalShaderType.Vector4;
+                case "Matrix2x2":
+                    return InternalShaderType.Matrix2x2;
+                case "Matrix2x3":
+                    return InternalShaderType.Matrix2x3;
+                case "Matrix2x4":
+                    return InternalShaderType.Matrix2x4;
+                case "Matrix3x2":
+                    return InternalShaderType.Matrix3x2;
+                case "Matrix3x3":
+                    return InternalShaderType.Matrix3x3;
+                case "Matrix3x4":
+                    return InternalShaderType.Matrix3x4;
+                case "Matrix4x2":
+                    return InternalShaderType.Matrix4x2;
+                case "Matrix4x3":
+                    return InternalShaderType.Matrix4x3;
+                case "Matrix4x4":
+                    return InternalShaderType.Matrix4x4;
+                default:
+                    throw new ArgumentException( "Not supported shader data type." );
+            }
+        }
+
+    }
+
+    public enum InternalShaderType
+    {
+#pragma warning disable CS1591
+        Struct,
+        Void,
+        Int,
+        UInt,
+        Float,
+        Double,
+        Vector2,
+        Vector3,
+        Vector4,
+        VectorD2,
+        VectorD3,
+        VectorD4,
+        Matrix2x2,
+        Matrix2x3,
+        Matrix2x4,
+        Matrix3x2,
+        Matrix3x3,
+        Matrix3x4,
+        Matrix4x2,
+        Matrix4x3,
+        Matrix4x4,
+#pragma warning restore CS1591
+    }
+}

StgSharp.Common/Graphics/ShaderEdit/ShaderStruct.cs

@@ -0,0 +1,98 @@
+//-----------------------------------------------------------------------
+//-----------------------------------------------------------------------
+//     file="ShaderStruct.cs"
+//     Project: StgSharp
+//     AuthorGroup: Nitload Space
+//     Copyright (c) Nitload Space. All rights reserved.
+//     
+//     Permission is hereby granted, free of charge, to any person 
+//     obtaining a copy of this software and associated documentation 
+//     files (the “Software”), to deal in the Software without restriction, 
+//     including without limitation the rights to use, copy, modify, merge,
+//     publish, distribute, sublicense, and/or sell copies of the Software, 
+//     and to permit persons to whom the Software is furnished to do so, 
+//     subject to the following conditions:
+//     
+//     The above copyright notice and 
+//     this permission notice shall be included in all copies 
+//     or substantial portions of the Software.
+//     
+//     THE SOFTWARE IS PROVIDED “AS IS”, 
+//     WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, 
+//     INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 
+//     FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. 
+//     IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, 
+//     DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, 
+//     ARISING FROM, OUT OF OR IN CONNECTION WITH 
+//     THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+//     
+//-----------------------------------------------------------------------
+//-----------------------------------------------------------------------
+using StgSharp.Graphics.OpenGL;
+
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace StgSharp.Graphics.ShaderEdit
+{
+    public class ShaderStructMember
+    {
+
+        internal InternalShaderType type;
+        internal object value;
+
+    }
+
+    public class ShaderStruct
+    {
+
+        internal Dictionary<GlHandle, ShaderStructMember> uniformPair;
+
+        internal ShaderStruct() { }
+
+        public ShaderStruct( params (GlHandle, ShaderStructMember)[] uniformPairs )
+        {
+            uniformPair = new Dictionary<GlHandle, ShaderStructMember>();
+            if( uniformPairs.Length == 0 ) {
+                return;
+            }
+
+            foreach( (GlHandle, ShaderStructMember) item in uniformPairs ) {
+                uniformPair.Add( item.Item1, item.Item2 );
+            }
+        }
+
+        public unsafe void SetAllUniforms()
+        {
+            OpenglContext* gl = ( OpenglContext* )OpenGL.OpenGLFunction.CurrentGL.ContextHandle;
+            foreach( KeyValuePair<GlHandle, ShaderStructMember> uniform in uniformPair )
+            {
+                int id = uniform.Key.SignedValue;
+                ShaderStructMember s = uniform.Value;
+                switch( s.type )
+                {
+                    case InternalShaderType.Struct:
+                        throw new ArgumentException(
+                            "Incorrect type \"Struct\" defined in this self define type" );
+                    case InternalShaderType.Void:
+                        throw new ArgumentException(
+                            "Incorrect type \"Void\" defined in this self define type" );
+                    case InternalShaderType.Float:
+                        gl->glUniform1f( id, ( float )s.value );
+                        break;
+                    case InternalShaderType.Int:
+                        gl->glUniform1f( id, ( int )s.value );
+                        break;
+                    default:
+                        throw new NotImplementedException();
+                        throw new ArgumentException(
+                            "Incorrect type \"Unknown\" defined in this self define type" );
+                }
+            }
+        }//------------------------------------ End of Class ---------------------------------------
+
+    }
+}

StgSharp.Common/Graphics/TexturePipeline.cs

@@ -0,0 +1,67 @@
+//-----------------------------------------------------------------------
+//-----------------------------------------------------------------------
+//     file="TexturePipeline.cs"
+//     Project: StgSharp
+//     AuthorGroup: Nitload Space
+//     Copyright (c) Nitload Space. All rights reserved.
+//     
+//     Permission is hereby granted, free of charge, to any person 
+//     obtaining a copy of this software and associated documentation 
+//     files (the “Software”), to deal in the Software without restriction, 
+//     including without limitation the rights to use, copy, modify, merge,
+//     publish, distribute, sublicense, and/or sell copies of the Software, 
+//     and to permit persons to whom the Software is furnished to do so, 
+//     subject to the following conditions:
+//     
+//     The above copyright notice and 
+//     this permission notice shall be included in all copies 
+//     or substantial portions of the Software.
+//     
+//     THE SOFTWARE IS PROVIDED “AS IS”, 
+//     WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, 
+//     INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 
+//     FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. 
+//     IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, 
+//     DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, 
+//     ARISING FROM, OUT OF OR IN CONNECTION WITH 
+//     THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+//     
+//-----------------------------------------------------------------------
+//-----------------------------------------------------------------------
+using StgSharp.PipeLine;
+
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace StgSharp.Graphics
+{
+    public class TexturePipeline : IPipeLineConnectionPayload
+    {
+
+        private Image _value;
+
+        public TexturePipeline( Image i )
+        {
+            _value = i;
+        }
+
+        public object? ValueDefault => null;
+
+        public object Value
+        {
+            get => _value;
+            set
+            {
+                ArgumentNullException.ThrowIfNull( value );
+                if( value is not Image image ) {
+                    throw new ArgumentException( "Value must be of type Image" );
+                }
+                _value = image;
+            }
+        }
+
+    }
+}

StgSharp.Common/Graphics/TextureProvider.cs

@@ -0,0 +1,89 @@
+//-----------------------------------------------------------------------
+//-----------------------------------------------------------------------
+//     file="TextureProvider.cs"
+//     Project: StgSharp
+//     AuthorGroup: Nitload Space
+//     Copyright (c) Nitload Space. All rights reserved.
+//     
+//     Permission is hereby granted, free of charge, to any person 
+//     obtaining a copy of this software and associated documentation 
+//     files (the “Software”), to deal in the Software without restriction, 
+//     including without limitation the rights to use, copy, modify, merge,
+//     publish, distribute, sublicense, and/or sell copies of the Software, 
+//     and to permit persons to whom the Software is furnished to do so, 
+//     subject to the following conditions:
+//     
+//     The above copyright notice and 
+//     this permission notice shall be included in all copies 
+//     or substantial portions of the Software.
+//     
+//     THE SOFTWARE IS PROVIDED “AS IS”, 
+//     WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, 
+//     INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 
+//     FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. 
+//     IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, 
+//     DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, 
+//     ARISING FROM, OUT OF OR IN CONNECTION WITH 
+//     THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+//     
+//-----------------------------------------------------------------------
+//-----------------------------------------------------------------------
+using StgSharp.Mathematics;
+
+using System;
+using System.Collections.Generic;
+using System.Diagnostics.CodeAnalysis;
+using System.Runtime.CompilerServices;
+using System.Text;
+
+namespace StgSharp.Graphics
+{
+    public class TextureProvider : IImageProvider
+    {
+
+        private Vec2[] _texCoord;
+        private Image _tex;
+
+        public TextureProvider( Image image, Vec2[] coord )
+        {
+            _tex = image;
+            _texCoord = coord;
+        }
+
+        public ref Vec2 this[ int index ]
+        {
+            get => ref _texCoord[ index ];
+        }
+
+        public Span<Vec2> TextureCoordinate
+        {
+            get => new Span<Vec2>( _texCoord );
+        }
+
+        public Image ProvideImage()
+        {
+            return _tex;
+        }
+
+        public void ReadImage( IImageProvider provider )
+        {
+            _tex = provider.ProvideImage();
+        }
+
+        public void UpdateFromImage( [NotNull]Image i )
+        {
+            if( i == _tex ) {
+                return;
+            }
+            if( i.Size == _tex.Size )
+            {
+                _tex = i;
+            } else
+            {
+                throw new ArgumentException(
+                    $"Size of {nameof(i)} does not equals to current image." );
+            }
+        }
+
+    }
+}

StgSharp.Common/Graphics/Vulkan/vkEnum.cs

@@ -0,0 +1,51 @@
+using System;
+using System.Collections.Generic;
+using System.Text;
+
+namespace StgSharp.Graphics.Vulkan
+{
+
+    internal enum VkStructureType : uint
+    {
+
+        VK_STRUCTURE_TYPE_XLIB_SURFACE_CREATE_INFO_KHR = 1000004000,
+        VK_STRUCTURE_TYPE_XCB_SURFACE_CREATE_INFO_KHR = 1000005000,
+        VK_STRUCTURE_TYPE_WAYLAND_SURFACE_CREATE_INFO_KHR = 1000006000,
+        VK_STRUCTURE_TYPE_WIN32_SURFACE_CREATE_INFO_KHR = 1000009000,
+        VK_STRUCTURE_TYPE_MACOS_SURFACE_CREATE_INFO_MVK = 1000123000,
+        VK_STRUCTURE_TYPE_METAL_SURFACE_CREATE_INFO_EXT = 1000217000,
+        VK_STRUCTURE_TYPE_MAX_ENUM = 0x7FFFFFFF
+
+    }
+
+    internal enum VkResult
+    {
+
+        VK_SUCCESS = 0,
+        VK_NOT_READY = 1,
+        VK_TIMEOUT = 2,
+        VK_EVENT_SET = 3,
+        VK_EVENT_RESET = 4,
+        VK_INCOMPLETE = 5,
+        VK_ERROR_OUT_OF_HOST_MEMORY = -1,
+        VK_ERROR_OUT_OF_DEVICE_MEMORY = -2,
+        VK_ERROR_INITIALIZATION_FAILED = -3,
+        VK_ERROR_DEVICE_LOST = -4,
+        VK_ERROR_MEMORY_MAP_FAILED = -5,
+        VK_ERROR_LAYER_NOT_PRESENT = -6,
+        VK_ERROR_EXTENSION_NOT_PRESENT = -7,
+        VK_ERROR_FEATURE_NOT_PRESENT = -8,
+        VK_ERROR_INCOMPATIBLE_DRIVER = -9,
+        VK_ERROR_TOO_MANY_OBJECTS = -10,
+        VK_ERROR_FORMAT_NOT_SUPPORTED = -11,
+        VK_ERROR_SURFACE_LOST_KHR = -1000000000,
+        VK_SUBOPTIMAL_KHR = 1000001003,
+        VK_ERROR_OUT_OF_DATE_KHR = -1000001004,
+        VK_ERROR_INCOMPATIBLE_DISPLAY_KHR = -1000003001,
+        VK_ERROR_NATIVE_WINDOW_IN_USE_KHR = -1000000001,
+        VK_ERROR_VALIDATION_FAILED_EXT = -1000011001,
+        VK_RESULT_MAX_ENUM = 0x7FFFFFFF
+
+    }
+
+}

StgSharp.Common/Graphics/Vulkan/vkHandle.cs

@@ -0,0 +1,51 @@
+//-----------------------------------------------------------------------
+//-----------------------------------------------------------------------
+//     file="vkHandle.cs"
+//     Project: StgSharp
+//     AuthorGroup: Nitload Space
+//     Copyright (c) Nitload Space. All rights reserved.
+//     
+//     Permission is hereby granted, free of charge, to any person 
+//     obtaining a copy of this software and associated documentation 
+//     files (the “Software”), to deal in the Software without restriction, 
+//     including without limitation the rights to use, copy, modify, merge,
+//     publish, distribute, sublicense, and/or sell copies of the Software, 
+//     and to permit persons to whom the Software is furnished to do so, 
+//     subject to the following conditions:
+//     
+//     The above copyright notice and 
+//     this permission notice shall be included in all copies 
+//     or substantial portions of the Software.
+//     
+//     THE SOFTWARE IS PROVIDED “AS IS”, 
+//     WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, 
+//     INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 
+//     FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. 
+//     IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, 
+//     DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, 
+//     ARISING FROM, OUT OF OR IN CONNECTION WITH 
+//     THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+//     
+//-----------------------------------------------------------------------
+//-----------------------------------------------------------------------
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Runtime.InteropServices;
+using System.Security;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace StgSharp.Graphics.Vulkan
+{
+    [StructLayout( LayoutKind.Explicit, Size = 8 )]
+    public struct vkHandle
+    {
+
+        [FieldOffset( 0 )] public int SignedHalfValue;
+        [FieldOffset( 0 )] public IntPtr Handle;
+        [FieldOffset( 0 )] public IntPtr UnsignedHandle;
+        [FieldOffset( 0 )] public uint HalfValue;
+
+    }
+}

StgSharp.Common/Graphics/framework.cs

@@ -0,0 +1,105 @@
+//-----------------------------------------------------------------------
+// -----------------------------------------------------------------------
+// file="framework.cs"
+// Project: StgSharp
+// AuthorGroup: Nitload Space
+// Copyright (c) Nitload Space. All rights reserved.
+//     
+// Permission is hereby granted, free of charge, to any person 
+// obtaining a copy of this software and associated documentation 
+// files (the “Software”), to deal in the Software without restriction, 
+// including without limitation the rights to use, copy, modify, merge,
+// publish, distribute, sublicense, and/or sell copies of the Software, 
+// and to permit persons to whom the Software is furnished to do so, 
+// subject to the following conditions:
+//     
+// The above copyright notice and 
+// this permission notice shall be included in all copies 
+// or substantial portions of the Software.
+//     
+// THE SOFTWARE IS PROVIDED “AS IS”, 
+// WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, 
+// INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. 
+// IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, 
+// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, 
+// ARISING FROM, OUT OF OR IN CONNECTION WITH 
+// THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+//     
+// -----------------------------------------------------------------------
+// -----------------------------------------------------------------------
+using StgSharp.Graphics;
+
+using System;
+using System.Collections.Generic;
+using System.Diagnostics;
+using System.Reflection;
+using System.Runtime.CompilerServices;
+using System.Runtime.InteropServices;
+using System.Text;
+
+#if Windows
+// using Windows.Win32;
+#endif
+
+namespace StgSharp.Graphics
+{
+    /// <summary>
+    ///   Function handler to load an opengl function by searching its _label.
+    /// </summary>
+    /// <param _label="name">
+    ///   the _label of the Opengl function
+    /// </param>
+    /// <returns>
+    ///   An Intptr value representing the pointer to the function
+    /// </returns>
+    public delegate IntPtr glLoader(string name);
+
+    #region StgSharpDele
+
+[UnmanagedFunctionPointer(CallingConvention.Cdecl)]
+    public unsafe delegate void FrameBufferSizeHandler(IntPtr window, int width, int height);
+
+[UnmanagedFunctionPointer(CallingConvention.Cdecl)]
+    public unsafe delegate void FramePositionHandler(IntPtr window, float width, float height);
+
+    #endregion
+
+
+    #region glDEBUG
+
+    internal unsafe delegate void GLDEBUGPROC(
+                                  int source,
+                                  int type,
+                                  uint id,
+                                  int severity,
+                                  int length,
+                                  sbyte* message,
+                                  void* userParam);
+    internal unsafe delegate void GLDEBUGPROCARB(
+                                  int source,
+                                  int type,
+                                  uint id,
+                                  int severity,
+                                  int length,
+                                  sbyte* message,
+                                  void* userParam);
+    internal unsafe delegate void GLDEBUGPROCKHR(
+                                  int source,
+                                  int type,
+                                  uint id,
+                                  int severity,
+                                  int length,
+                                  sbyte* message,
+                                  void* userParam);
+    internal unsafe delegate void GLDEBUGPROCAMD(
+                                  uint id,
+                                  int category,
+                                  int severity,
+                                  int length,
+                                  sbyte* message,
+                                  void* userParam);
+
+#endregion
+
+}

StgSharp.Common/Graphics/frameworkSyncContext.cs

@@ -0,0 +1,79 @@
+//-----------------------------------------------------------------------
+//-----------------------------------------------------------------------
+//     file="frameworkSyncContext.cs"
+//     Project: StgSharp
+//     AuthorGroup: Nitload Space
+//     Copyright (c) Nitload Space. All rights reserved.
+//     
+//     Permission is hereby granted, free of charge, to any person 
+//     obtaining a copy of this software and associated documentation 
+//     files (the “Software”), to deal in the Software without restriction, 
+//     including without limitation the rights to use, copy, modify, merge,
+//     publish, distribute, sublicense, and/or sell copies of the Software, 
+//     and to permit persons to whom the Software is furnished to do so, 
+//     subject to the following conditions:
+//     
+//     The above copyright notice and 
+//     this permission notice shall be included in all copies 
+//     or substantial portions of the Software.
+//     
+//     THE SOFTWARE IS PROVIDED “AS IS”, 
+//     WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, 
+//     INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 
+//     FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. 
+//     IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, 
+//     DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, 
+//     ARISING FROM, OUT OF OR IN CONNECTION WITH 
+//     THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+//     
+//-----------------------------------------------------------------------
+//-----------------------------------------------------------------------
+using System;
+using System.Collections.Concurrent;
+using System.Collections.Generic;
+using System.Diagnostics;
+using System.Linq;
+using System.Text;
+using System.Threading;
+using System.Threading.Tasks;
+
+namespace StgSharp.Threading
+{
+    public class FrameworkSyncContext : SynchronizationContext
+    {
+
+        private static readonly FrameworkSyncContext _mainThreadContext = new FrameworkSyncContext();
+
+        private readonly BlockingCollection<SendOrPostCallback> _syncContexts = new BlockingCollection<SendOrPostCallback>(
+            );
+        private readonly Thread _mainThread = Thread.CurrentThread;
+
+        public FrameworkSyncContext()
+        {
+            _syncContexts = new BlockingCollection<SendOrPostCallback>();
+            _mainThread = Thread.CurrentThread;
+        }
+
+        public static FrameworkSyncContext MainThreadContext
+        {
+            get => _mainThreadContext;
+        }
+
+        public override void Post( SendOrPostCallback d, object state )
+        {
+            _syncContexts.Add( d );
+        }
+
+        public override void Send( SendOrPostCallback d, object state )
+        {
+            if( Thread.CurrentThread == _mainThread )
+            {
+                d( state );
+            } else
+            {
+                Post( d, state );
+            }
+        }
+
+    }
+}