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

▶ 4K video showcase: https://youtu.be/W8jmhdjGCYo▶ Quick Start (3 min): https://youtu.be/rV06nFL1pAwGenerate your own fly-through space nebulae – right inside the Unity EditorPick a seed and a colour look, press Generate Nebula, and about half a minute later you fly through a brand-new, truly volumetric nebula: bright star-forming cores in blown-out cavities, dark dust pillars with lit rims, curved shells, long dust lanes, streamers, thin veils and thick opaque dust, with a deep-field star and galaxy sky behind. This is not a skybox: the gas and dust are rendered in 3D around the camera, so you can fly into, through and around them.URP and HDRP in one package. Every nebula is saved as normal Unity assets you can use in any scene and in your builds.✦ GENERATEMillions of seeds – every seed is a different nebula: layout, cores, walls, pillars, lanes, fine structure and its own star sky26 colour looks – 24 the seed chooses from, plus two Hubble-palette looks (royal blue / teal glow, gold rims)Six artistic controls – Cores, Pillars, Dust Amount, Gas Amount, Streamers, Veils; each changes only its own part, so the seed stays recognisableTry Nebula / Keep Last Try – try as many seeds as you like without filling your project, keep the one you like in a moment without baking again~20 – 40 s per nebula on an RTX 3090; the generator adapts to slower GPUs automatically (Safe Mode for integrated graphics)✦ CUSTOMISE – LIVE, NO NEW BAKEGas palette – Gas Outer, Gas Mid and Gas Core (HDR colours)Dust – Rim Color for the lit rims, Dust Glow inside the dustGrading – Saturation, Hue Shift, Emission Gain, Density ScaleStar sky – Star Cut, Star Gain, Sky Exposure, Sky TintPer profile or per scene – edit a nebula's Look, or tick Override Look on one Nebula Volume; every value can be set from C#✦ FEATURESFly inside – the nebula surrounds the camera 360°, with gas and dust at every depthFour quality presets – Low, Medium (default), High, EpicScale x0.25 – x16 – the whole nebula grows, same look and same cost at every sizeRotated copies – one huge, continuous nebula with the same close-up detailSlow, natural gas animation – on by defaultSelf-lit, composited over your scene – no lights needed; objects inside the nebula are fogged naturallyWorks in the Scene view while you editLives next to our Volumetric Nebula Skyboxes packs in the same project – own folder, namespace and menus✦ WHAT'S INSIDEThe generator – editor only, never in your builds10 example nebulae made with the generator20 demo scenes – 10 for URP, 10 for HDRP, each with a fly camera and a Nebula GeneratorNebula Volume and Nebula Fly Camera components, URP renderer feature (one-click setup), HDRP custom passDocumentation – README and a 23-page PDF manual: every button, setting and workflow, step by step✦ PERFORMANCE90+ FPS at native 4K on the default Medium preset (RTX 3090, built player: URP 101 FPS, HDRP 91 FPS, average of the 10 demo scenes). Only the nebula is traced at reduced resolution and filtered over several frames – the rest of your frame stays at full resolution, no upscaling.✦ DEMO CONTROLSWASD fly · E / Q up / down · mouse look · wheel flight speed1 – 4 quality · 5 – 8 size · B cycle size · R copies · G gas animationC colour variation · X colours as designed · N / P next / previous demo scene✦ REQUIREMENTSUnity 2022.3 and above, URP or HDRP (one package, each pipeline folder compiles only with its pipeline)Generating: Unity Editor on Windows, DirectX 11 or 12, 4 GB of video memory or moreNot supported: Built-in Render Pipeline, VR / XR single-pass✦ USE CASESSpace games and flight sims · sci-fi cinematics and trailers · menu and title backgrounds · space-station and planet backdrops