[feat]: implement ui layer arch

1 files changed, 40 insertions, 0 deletions

diff --git a/src/rendering/render_path.h b/src/rendering/render_path.h
new file mode 100644
index 0000000..0d97395
--- /dev/null
+++ b/src/rendering/render_path.h
@@ -0,0 +1,40 @@
+#pragma once
+
+#include "rhi.h"
+#include "view.h"
+#include "scene_renderer.h"
+#include "black_hole_renderer.h"
+#include "core/memory.h"
+
+#include <string>
+
+namespace Donut
+{
+    class Scene;
+
+    // Owns the device-side rendering: the two portable renderers, the shared HDRI
+    // cubemap, and the per-frame composition (off-screen geodesic pass -> present,
+    // or the scene pass), with ImGui drawn on top inside the swapchain pass. The
+    // Application hands it a Scene + View each frame; it knows nothing about the UI.
+    class RenderPath
+    {
+    public:
+        auto init(RHI::Device& device, const std::string& hdri_path) -> bool;
+        auto shutdown() -> void;
+
+        // Rebuilds the environment cubemap if the path changed (device-idle).
+        auto sync_hdri(const std::string& hdri_path) -> void;
+
+        // Composes one frame's viewport into the swapchain command list. `moving`
+        // drives the black hole's progressive resolution; `time` animates the disk.
+        auto render(RHI::CommandList& cmd, Scene& scene, View view,
+                    int fb_width, int fb_height, bool moving, float time) -> void;
+
+    private:
+        RHI::Device*             m_device = nullptr;
+        Scope<SceneRenderer>     m_scene_renderer;
+        Scope<BlackHoleRenderer> m_black_hole_renderer;
+        Ref<RHI::Texture>        m_cubemap;
+        std::string              m_hdri_path;
+    };
+}