Volumetric Nebula Skyboxes – 11 Fly-Through 3D Space Nebulae (URP & HDRP)

Full 4K video showcase: https://youtu.be/8nBXUqtJg_ETruly volumetric space nebulae you can fly through – not a skybox. The gas and dust are rendered in 3D all around the camera, so you can fly into, through and around them, with natural, cinematic colours, slowly evolving gas and a deep-field star and galaxy background behind. URP and HDRP in one package.WHAT'S INSIDE• 11 volumetric nebulae: Olive Teal, Teal Orange, Reflection Blue, Magenta Dusk, Golden Hour, Pleiades Blue, Oxygen Teal, Hubble Gold, Violet HII, Hydrogen Red, Teal Orange Core – each a Nebula Profile with five 3D textures and an 8K star layer• 22 demo scenes: 11 for URP and 11 for HDRP, each opening on the nebula's best view• Nebula Volume component, URP renderer feature, HDRP custom pass• Fly camera: WASD + E / Q, mouse look, wheel = speed, 1-4 quality, 5-8 size, B cycle size, R copies, G gas animation, N / P next / previous scene, Esc frees the cursor• Documentation (README) with setup, settings and performance tablesFEATURES• Fly inside: the nebula surrounds the camera 360°, with gas and dust at every depth• Quality presets: Low, Medium, High, Epic• Scale x0.25 to x16 – the same look and the same cost at every size• Rotated copies: one much bigger, seamless nebula with sharp close-up detail• Slow, natural gas animation (on by default)• Correct compositing: objects inside the nebula are fogged naturally• Works in the Scene view while you edit; change quality, scale, copies and animation from code (NebulaVolume.Active)PERFORMANCE (native 4K, RTX 3090, built player, whole frame)URP: Low ~320 FPS, Medium (default) ~115 FPS, High ~57 FPS, Epic ~32 FPS (cinematics). HDRP Medium ~98 FPS. The cost depends on resolution and quality, not on the nebula size.SETUPURP: Tools > Volumetric Nebulae > Setup URP Renderer (one click), then open a scene in VolumetricNebulae/URP/Scenes. HDRP: open a scene in VolumetricNebulae/HDRP/Scenes – nothing to set up. Each pipeline's code only compiles when that pipeline is installed, so the other folder stays inactive.USE CASESSpace games and flight sims, sci-fi cinematics and trailers, menu and title screens, backdrops for space stations and planets.Limits: very close to dense dust the clouds become soft (volume resolution); transparent objects are drawn in front of the nebula; single-pass VR / XR is not supported.