[add]: add HDRI

1 files changed, 31 insertions, 0 deletions

diff --git a/src/Platform/OpenGL/OpenGLTexture.h b/src/Platform/OpenGL/OpenGLTexture.h
index 1c3cb05..220df09 100644
--- a/src/Platform/OpenGL/OpenGLTexture.h
+++ b/src/Platform/OpenGL/OpenGLTexture.h
@@ -34,4 +34,35 @@ namespace Donut
         uint32_t    m_RendererID;
         GLenum      m_InternalFormat, m_DataFormat;
     };
+
+    class OpenGLCubemapTexture 
+        : public CubemapTexture
+    {
+    public:
+        OpenGLCubemapTexture(uint32_t width, uint32_t height);
+        OpenGLCubemapTexture(const std::string& path);
+        virtual ~OpenGLCubemapTexture();
+
+        virtual uint32_t GetWidth()      const override { return m_Width; }
+        virtual uint32_t GetHeight()     const override { return m_Height; }
+        virtual uint32_t GetRendererID() const override { return m_RendererID; }
+
+        virtual void SetData(void* data, uint32_t size)                          override;
+        virtual void Bind(uint32_t slot = 0)                               const override;
+        virtual void BindAsImage(uint32_t slot = 0, bool readOnly = false) const override;
+
+        virtual bool operator==(const Texture& other) const override
+        {
+            return m_RendererID == other.GetRendererID();
+        }
+
+    private:
+        void LoadHDRI(const std::string& path);
+        void ConvertEquirectangularToCubemap(float* hdrData, int width, int height);
+
+        std::string m_Path;
+        uint32_t    m_Width, m_Height;
+        uint32_t    m_RendererID;
+        GLenum      m_InternalFormat, m_DataFormat;
+    };
 }