feat: add HDRI

1 files changed, 46 insertions, 0 deletions

diff --git a/src/core/hdri_manager.h b/src/core/hdri_manager.h
new file mode 100644
index 0000000..5ccd402
--- /dev/null
+++ b/src/core/hdri_manager.h
@@ -0,0 +1,46 @@
+#pragma once
+
+#include "core/log.h"
+#include "rendering/texture.h"
+
+#include <string>
+#include <unordered_map>
+#include <memory>
+
+namespace Donut
+{
+    class HDRIManager
+    {
+    public:
+        static HDRIManager& get()
+        {
+            static HDRIManager instance;
+            return instance;
+        }
+
+        Ref<CubemapTexture> load_hdri(const std::string& path);
+        Ref<CubemapTexture> get_current_hdri() const { return m_current_hdri; }
+        
+        void set_current_hdri(const std::string& path);
+        const std::vector<std::string>& get_available_hdri() const { return m_available_hdri; }
+        std::string get_hdri_name(const std::string& path)   const;
+        void clear_cache();
+    private:
+         HDRIManager() = default;
+        ~HDRIManager() = default;
+
+        HDRIManager(const HDRIManager&)            = delete;
+        HDRIManager& operator=(const HDRIManager&) = delete;
+
+        std::unordered_map<std::string, Ref<CubemapTexture>> m_hdri_cache;
+        
+        Ref<CubemapTexture> m_current_hdri;
+        
+        std::vector<std::string> m_available_hdri = 
+        {
+            "assets/hdri/hdr_blue_nebulae_1.hdr",
+            "assets/hdri/hdr_subdued_blue_nebulae.hdr",
+            "assets/hdri/hdr_subdued_multi_nebulae.hdr"
+        };
+    };
+};