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 +1,92 @@
+//-----------------------------------------------------------------------
+// -----------------------------------------------------------------------
+// file="glFucntionSourceManager"
+// 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;
+
+using System;
+using System.Collections.Concurrent;
+using System.Collections.Generic;
+using System.Runtime.CompilerServices;
+
+namespace StgSharp.Graphics.OpenGL
+{
+    public partial class OpenGLFunction
+    {
+
+        private readonly int textureUnitCountGetter;
+
+        public int TextureUnitCount
+        {
+            [MethodImpl(MethodImplOptions.AggressiveInlining)]
+            get => textureUnitCountGetter;
+        }
+
+        private ConcurrentQueue<TextureUnit> UnusedTextureImageUint
+        {
+            [MethodImpl(MethodImplOptions.AggressiveInlining)]
+            get;
+        } = [];
+
+        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;
+        }
+
+    }
+}