MudBun: Volumetric VFX & Modeling

Animated Details | Manual | Quick Guide Video Email | Discord | Official Forum Thread Compatibility - Windows is the only platform under active development, maintenance, and testing. Non-Windows platforms are not guaranteed to run MudBun and support for them is limited. WebGL is not supported for now due to its lack of compute shader capabilities at the time of development. - Unity 2021.3 (LTS), 2022.3 (LTS), and 6 (LTS): Built-in render pipeline, URP, and HDRP. - Later versions of 2021.3 seem to crash upon creating a MudBun renderer. Unity is aware of this problem and is working on a fix (tracked here). The latest version of 2021.3 that has been tested to for all render pipelines is 2021.3.26f. The state between version 2021.3.27f and 2021.3.39f is unknown. - Meshes locked in Mesh Renderer Mode or exported from MudBun are just standard meshes and can be used without requiring MudBun at run-time, so they should be compatible on all platforms. - Compute shader support is required. - It is highly recommended to target hardware with dedicated GPUs, as MudBun uses compute shaders. It is not recommended to target hardware with integrated GPUs, unless MudBun is only used at edit-time to build meshes to be exported or locked at run-time. MudBun: Volumetric VFX & Modeling MudBun is a real-time volumetric VFX mesh tool. It procedurally generates meshes from non-destructive “brushes” that define shapes, distortion, and surface modification. MudBun is intended for localized VFX, but it can also be used for volumetric modeling and provides a convenient auto-rigging feature. Locked meshes, including auto-rigged ones, can be exported using Unity's official FBX exporter package. There are various render & meshing modes available with different styles & characteristics. Supported meshing modes include: marching cubes (balanced), dual quads (faster & stylized), surface nets (can blend to/from dual quads), and dual contouring (slower, excels at preserving sharp features, can blend to/from dual quads). MudBun can be used to create organic-looking meshes, which makes it a great combo with Boing Kit, a tool for producing organic bouncy effects. MudBun is customizable. Users can extend the framework to create custom brush shapes, distortion brushes, modifier brushes, and shaders. It is also possible to define custom rigging logic for the auto-rigging feature. Using a special data representation, MudBun frees users from worrying about the constraints of a finite voxel grid when working within typical game settings. Features (details with animations): - Volumetric mesh generation & modeling. - Built-in VFX & primitive brushes. - Distortion & modifier brushes. - User-defined custom brushes. - Brush groups (compound brushes). - Render modes: smooth mesh, flat mesh, circle splats, quad splats, decal, ray-marched surface (experimental & URP only), ray-traced voxels (experimental & URP only). - Meshing modes: marching cubes, dual quads, surface nets, dual contouring. - Brush operators: union, subtract, intersect, dye, cull inside, cull outside, no-op. - Dynamic voxel density. - 2D Mode. - Mesh collider generation. - Mesh locking & auto-rigging. - Mesh auto-smoothing. - Automatic vertex welding of generated mesh. - SDF texture generation (for GPU particle collision). - Smooth corners for dual contouring. - Render pipelines supported: built-in RP, URP, HDRP, and custom RP. - Custom Unity shader graph nodes. - Borderless voxel workspace. - GPU memory budgeting & auto adjustment. Limitations: - MudBun is intended and optimized for localized real-time volumetric VFX mesh generation with dynamic brushes. Modeling and terrain editing with many brushes are possible but should be kept at a reasonable scale. - Non-desktop devices (e.g. laptops, tablets, etc.) generally have weaker hardware than desktops and might not be suitable to run MudBun. - MudBun currently does not render in prefab mode. Unity APIs related to prefab mode/stage are