Added RenderPipelineBase

src/Runtime/Ghost.Graphics/RenderPipeline/RenderPipeline.cs

@@ -0,0 +1,70 @@
+using Ghost.Graphics.Core;
+using Ghost.Graphics.RHI;
+using System.Runtime.CompilerServices;
+using System.Runtime.InteropServices;
+
+namespace Ghost.Graphics.RenderPipeline;
+
+public interface IRenderPipeline : IDisposable
+{
+    void AddRenderList(RenderList renderList, string key);
+
+    void Render(RenderContext ctx, ReadOnlySpan<RenderRequest> requests);
+}
+
+public abstract class RenderPipelineBase : IRenderPipeline
+{
+    protected readonly Dictionary<string, RenderList> _renderLists = new();
+
+    private bool _disposed;
+
+    ~RenderPipelineBase()
+    {
+        Dispose();
+    }
+
+    [MethodImpl(MethodImplOptions.AggressiveInlining)]
+    protected void ThrowIfDisposed()
+    {
+        ObjectDisposedException.ThrowIf(_disposed, this);
+    }
+
+    public void AddRenderList(RenderList renderList, string key)
+    {
+        ThrowIfDisposed();
+
+        ref var existingList = ref CollectionsMarshal.GetValueRefOrAddDefault(_renderLists, key, out var exists);
+        if (!exists)
+        {
+            existingList = renderList;
+        }
+        else
+        {
+            existingList.Append(renderList);
+        }
+    }
+
+    public abstract void Render(RenderContext ctx, ReadOnlySpan<RenderRequest> requests);
+
+    public void Dispose()
+    {
+        if (_disposed)
+        {
+            return;
+        }
+
+        Dispose(true);
+
+        foreach (var list in _renderLists.Values)
+        {
+            list.Dispose();
+        }
+
+        _disposed = true;
+        GC.SuppressFinalize(this);
+    }
+
+    public virtual void Dispose(bool disposing)
+    {
+    }
+}