daily update on 20240828 by nitload youmu, autotexture added

源代码/StgSharp/Graphics/OpenGL/glResourceManager.cs

@@ -0,0 +1,99 @@
+//-----------------------------------------------------------------------
+//-----------------------------------------------------------------------
+//     file="glResourceManager.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;
+        }
+
+
+
+    }
+}