Added new RHI abstraction layer;

Added new console debug page to UnitTest;

Ghost.Graphics/D3D12/D3D12RenderTarget.cs

@@ -0,0 +1,40 @@
+using Ghost.Graphics.RHI;
+using Win32;
+using Win32.Graphics.Direct3D12;
+
+namespace Ghost.Graphics.D3D12;
+
+/// <summary>
+/// D3D12 implementation of render target interface
+/// Supports either color OR depth rendering, not both
+/// </summary>
+internal unsafe class D3D12RenderTarget : IRenderTarget
+{
+    private readonly D3D12Texture _target;
+    private bool _disposed;
+
+    public uint Width { get; }
+    public uint Height { get; }
+    public RenderTargetType Type { get; }
+    public ITexture Target => _target;
+
+    public D3D12RenderTarget(ComPtr<ID3D12Device14> device, D3D12DescriptorAllocator descriptorAllocator, RenderTargetDesc desc)
+    {
+        Width = desc.Width;
+        Height = desc.Height;
+        Type = desc.Type;
+
+        // Create the target texture based on type
+        var usage = Type == RenderTargetType.Color ? TextureUsage.RenderTarget : TextureUsage.DepthStencil;
+        var textureDesc = new TextureDesc(desc.Width, desc.Height, desc.Format, 1, usage);
+        _target = new D3D12Texture(device, textureDesc);
+    }
+
+    public void Dispose()
+    {
+        if (_disposed) return;
+
+        _target?.Dispose();
+        _disposed = true;
+    }
+}