Translations:Optimization Guidelines/39/en

Note that SkinnedMeshRenderer components have multiple modes for bounds calculation which impose different performance costs. The calculation mode is indicated by the BoundsComputeMethod on each SkinnedMeshRenderer component [1]:

• Static is a very cheap method based on the mesh alone. This does not require realtime computation, so ideally use this if possible.
• FastDisjointRootApproximate first merges all bones into disjoint groups (any overlapping bones are merged into a single one) to reduce overall number of bones. It then uses those to approximate bounds in realtime. Fastest realtime method, recommended if parts of a mesh are being culled when using `Static`.
• MediumPerBoneApproximate computes mesh bounds from bounds of every single bone. More accurate, but also much slower.
• SlowRealtimeAccurate uses actual transformed geometry, requiring the skinned mesh to be processed all the time. Very heavy, but will respect things like blendshapes in addition to bones.
• Proxy is slightly different from the others, but also potentially very cheap. It relies on the bounding box calculated for another SkinnedMeshRenderer referenced in the ProxyBoundsSource field. Useful in cases where you have a large main mesh and you need the visiblity of smaller meshes to be linked to it [2].