# setVertexSamplerState(_:lodMinClamp:lodMaxClamp:index:) Assigns a sampler state and clamp values to an entry in the vertex shader argument table. ``` func setVertexSamplerState(_ sampler: (any MTLSamplerState)?, lodMinClamp: Float, lodMaxClamp: Float, index: Int) ``` ## Parameters `sampler` An [`MTLSamplerState`](/documentation/Metal/MTLSamplerState) instance the command assigns to an entry in the vertex shader argument table for sampler states. `lodMinClamp` The smallest level of detail value a vertex shader can use when it samples a texture. `lodMaxClamp` The largest level of detail value a vertex shader can use when it samples a texture. `index` An integer that represents the entry in the vertex shader argument table for sampler states that stores a record of `sampler`. ## Discussion The method’s `lodMinClamp` and `lodMaxClamp` parameters override the default values for `sampler`. You can set the sampler’s default values by configuring the [`lodMinClamp`](/documentation/Metal/MTLSamplerDescriptor/lodMinClamp) and [`lodMaxClamp`](/documentation/Metal/MTLSamplerDescriptor/lodMaxClamp) properties of [`MTLSamplerDescriptor`](/documentation/Metal/MTLSamplerDescriptor) before you create the sampler. By default, the sampler state at each index is `nil`. --- Copyright © 2026 Apple Inc. All rights reserved. | [Terms of Use](https://www.apple.com/legal/internet-services/terms/site.html) | [Privacy Policy](https://www.apple.com/privacy/privacy-policy)