many thing

2026-02-28 00:54:32 +08:00
parent a798ab07f1
commit 55cf3934bb
90 changed files with 288 additions and 321 deletions
@@ -0,0 +1,160 @@
+//-----------------------------------------------------------------------
+// -----------------------------------------------------------------------
+// file="AutoTexture"
+// Project: StgSharp
+// AuthorGroup: Nitload
+// Copyright (c) Nitload. 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.Collections;
+using StgSharp.Graphics;
+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);
+        }
+
+    }
+}