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When this property is enabled, highly detailed geometry adds significant time to importing and building of Static Mesh data. It is recommended to disable Generate Lightmap UVs property when not using precomputed lighting with Lightmass. Typically these exceptions are rare and performance loss for using Nanite with them is fairly minimal so the recommendation is to not be overly concerned about where Nanite shouldn't be enabled if Nanite supports the use case. More specifically, a mesh is an especially good candidate for Nanite if it:Ĭontains many triangles, or has triangles that will be very small on screenĪcts as a major occluder of other Nanite geometryĪn example of an exception to these rules is something like a sky sphere: its triangles will be large on screen, it doesn't occlude anything, and there is only one in the scene. Any Static Mesh that has it enabled will typically render faster, and take up less memory and disk space. Nanite should generally be enabled wherever possible. What Types of Meshes Should Nanite Be Used For? Solid State Drives (or SSDs) are recommended for runtime storage. Since Nanite relies on the ability to rapidly stream mesh data from disk on demand. Virtual Textures are an orthogonal Unreal Engine feature with similar goals for texture data that Nanite achieves with mesh data. Virtual Textures are not required to be used with Nanite, but they are highly recommended.

Material assignment can be swapped dynamically, just like any other Static Mesh, and Nanite doesn't require any process to bake down materials. Materials are assigned to sections of the mesh such that those materials can use different shading models and dynamic effects which can be done in the shaders. Nanite meshes support multiple UVs and vertex colors. Move the camera close enough and Nanite will draw the original source triangles that were imported. Authoring content for Nanite is no different than traditional meshes except that Nanite can handle orders of magnitude more triangles and instances than is possible for traditionally rendered geometry. On top of that, Nanite uses an entirely new system for rendering that data format in an extremely efficient way.Īll that is required for a Static Mesh to take advantage of Nanite is a flag to enable it. A Nanite mesh is still essentially a triangle mesh at its core with a lot of level of detail and compression applied to its data. Differences Between a Nanite Mesh and Static MeshĪ Nanite mesh is a Static Mesh with Nanite enabled on it. Nanite will continue to expand its capabilities and improve performance in future releases of Unreal Engine. For example, instance counts, triangles per mesh, material complexity, output resolution, and performance should be carefully measured for any combination of content and hardware. Loss of quality is rare or non-existent, especially with LOD transitionsĪlthough the advantages can be game-changing, there are practical limits that still remain.

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Level of Detail (LOD) is automatically handled and no longer requires manual setup for individual mesh's LODs Use high-poly detailing rather than baking detail into normal map textures Now possible to directly import film-quality source arts, such as ZBrush sculpts and photogrammetry scans Multiple orders of magnitude increase in geometry complexity, higher triangle and objects counts than has been possible before in real-timeįrame budgets are no longer constrained by polycounts, draw calls, and mesh memory usage Nanite's data format is also highly compressed, and supports fine-grained streaming with automatic level of detail. It intelligently does work on only the detail that can be perceived and no more. Nanite is Unreal Engine 5's virtualized geometry system which uses a new internal mesh format and rendering technology to render pixel scale detail and high object counts. Nanite Fallback Mesh and Precision Settings

Differences Between a Nanite Mesh and Static Mesh

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