Create and customize black hole VFX for Unity URP with editable accretion disks, photon rings, gravitational lensing, reusable presets and runtime export.Koi's Black Hole Generator is a customizable black hole VFX authoring tool for Unity URP.Create a black hole that fits your scene using real-time visual controls, built-in presets and Simple or Advanced editing modes. Adjust the accretion disk, HDR colors, photon ring, gravitational lensing, scale and motion while previewing the result directly in Unity.The optional Koi Space Optics scene-distortion system can bend visible pixels from the destination scene, including the skybox and scene objects. Installation is controlled by the project owner and can be added or removed when needed.Save reusable presets, create your own variations, and export the current design as a runtime Prefab in a single .unitypackage with the required dependencies.Export also creates and verifies an independent preset backup before packaging, helping protect your current design if an export fails.A runtime API is included for controlling supported properties from your own scripts.The package includes Demo scenes, built-in presets and a self-contained multilingual HTML manual with 15 selectable languages, search and printing support.CompatibilityValidated on Windows with Unity 6000.6.0f1Universal Render Pipeline (URP) 17.6Uses Render GraphValidated with a standard perspective Base cameraBuilt-in Render Pipeline and HDRP are not supportedOther Unity versions and graphics platforms have not yet been certifiedIncludedGenerator Editor workflow with Simple and Advanced modesRuntime, Editor, Demo and Preset contentBuilt-in presets and editable user presetsAccretion disk controlsHDR color modes: Single, Dual, Multi and Auto TemperaturePhoton ring controls with custom or accretion-disk-linked colorGravitational lensing and screen-space scene distortionIndependent disk, flow and turbulence motion controlsHigh, Medium and Mobile rendering budgetsRuntime API for supported scripted changesRuntime Prefab export to a single .unitypackageIndependent preset backup created and verified before exportOptional Koi Space Optics scene-distortion installation and removalDemo scenes, including a distortion showcase sceneOffline HTML manual with 15 selectable languages, search and printingPerformanceHigh / Medium / Mobile modes use different rendering budgetsRay-tracing step limits: 180 / 128 / 80Actual GPU cost depends on screen coverage, resolution and overlapping effectsNo specific frame-rate guarantee is madeCamera and distortion limitationsOrthographic, XR and Overlay cameras use a body-only fallbackScreen-space distortion cannot reconstruct off-screen or hidden surfacesLate overlay UI is not refractedHDR, Bloom, tonemapping, render scale and other post-processing settings can change the final visual resultDemo Bloom and ACES settings are not forced onto exported runtime projectsRuntime exportExported runtime packages contain the generated effect and required runtime dependenciesThe Generator Editor window and Demo scenes are not included in runtime exportsExported designs reuse one project-level Koi Space Optics scene-distortion connection when enabledChatGPT and OpenAI Codex were used during development of this package. ChatGPT was used to help prototype the initial black hole effect, develop and refine the custom Generator editor tool, and assist with documentation and translations. Codex was later used to review, debug, refactor, and fix issues across the Unity project.The AI-assisted output was iteratively modified, tested, integrated, and refined by the publisher over multiple development versions. The final visual design, parameter system, presets, export workflow, scene-distortion integration, runtime behavior, documentation, and compatibility testing were reviewed and validated by the publisher.
