Refactor rendering projects

src/Runtime/Ghost.Graphics/Core/Camera.cs

@@ -1,5 +1,72 @@
+using Ghost.Core;
+using Ghost.Graphics.RenderGraphModule;
+using Ghost.Graphics.RHI;
+
 namespace Ghost.Graphics.Core;
 
 public class Camera
 {
-}
+    private readonly IRenderer _renderer;
+
+    private Handle<Texture> _colorTexture;
+    private Handle<Texture> _depthTexture;
+
+    private uint _actualWidth;
+    private uint _actualHeight;
+
+    private uint _virtualWidth;
+    private uint _virtualHeight;
+
+    public IRenderer Renderer => _renderer;
+
+    /// <summary>
+    /// Gets the actual width of the camera's render target in pixels. If upscaler is used, this is the width before upscaling.
+    /// </summary>
+    public uint ActualWidth => _actualWidth;
+    /// <summary>
+    /// Gets the actual height of the camera's render target in pixels. If upscaler is used, this is the height before upscaling.
+    /// </summary>
+    public uint ActualHeight => _actualHeight;
+    /// <summary>
+    /// Gets the virtual width of the camera's render target in pixels. If upscaler is used, this is the width after upscaling.
+    /// </summary>
+    public uint VirtualWidth => _virtualWidth;
+    /// <summary>
+    /// Gets the virtual height of the camera's render target in pixels. If upscaler is used, this is the height after upscaling.
+    /// </summary>
+    public uint VirtualHeight => _virtualHeight;
+
+    public RenderGraph? RenderGraph
+    {
+        get; set;
+    }
+
+    public Camera(IGraphicsEngine graphicsEngine)
+    {
+        _renderer = graphicsEngine.CreateRenderer();
+    }
+
+    public Camera(IGraphicsEngine graphicsEngine, RenderGraph renderGraph)
+    {
+        _renderer = graphicsEngine.CreateRenderer();
+        RenderGraph = renderGraph;
+
+        _renderer.RenderFunc = DefaultRenderFunc;
+    }
+
+    private Error DefaultRenderFunc(RenderContext context)
+    {
+        if (RenderGraph == null)
+        {
+            return Error.None;
+        }
+
+        RenderGraph.Reset();
+
+        var view = new ViewState(_virtualWidth, _virtualHeight, _actualWidth, _actualHeight);
+        RenderGraph.Compile(in view);
+        RenderGraph.Execute(context.CommandBuffer);
+
+        return Error.None;
+    }
+}