Samplers

Not built per-use — SamplerKind picks from a small pre-built cache (GlobalSamplers, set up automatically by WGPUPlugin) rather than creating a new sampler per material instance:

BindingInstanceEntry::Sampler(SamplerKind::LinearRepeat)  // in an instance's params — see Materials
samplers.get(SamplerKind::LinearClamp)                     // -> &Sampler, e.g. for a hand-built BindGroupBuilder

Variants: LinearRepeat, LinearClamp, LinearClampNoMip, Nearest, NearestClampBorder (falls back to edge-clamping on web — WebGPU has no border color), CompareLess (shadow-map textureSampleCompare, paired with BindingKind::comparison_sampler — see Bind Groups and Layouts).

Samplers are cheap to share and there’s rarely a reason to want more configurations than these — every SamplerKind variant is built once, eagerly, the first time GlobalSamplers is constructed, and reused for the lifetime of the app.