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