add from giga-device, new branch added

2025-08-21 16:51:25 +08:00
commit 43bbc06bbb
1296 changed files with 264186 additions and 0 deletions
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+//-----------------------------------------------------------------------
+// -----------------------------------------------------------------------
+// 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);
+            }
+        }
+
+    }
+}