Create a photorealistic image of an elegant swan gliding gracefully on a tranquil lake in a lush jungle, with surrounding rocks, plants, and flowers adding depth to the scene. The swan's feathers, with their pristine whites, should be meticulously detailed. Utilize cinematic lighting, ultra-high resolution, extremely detailed textures, and photorealism. Render the image in 8k resolution, capturing every intricate detail and creating a true masterpiece. The swan's serene eyes should reflect peace and elegance.