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# drawMeshThreads(_:threadsPerObjectThreadgroup:threadsPerMeshThreadgroup:)

Encodes a draw command that invokes a mesh shader and, optionally, an object shader with a grid of threads.

```
func drawMeshThreads(_ threadsPerGrid: MTLSize, threadsPerObjectThreadgroup: MTLSize, threadsPerMeshThreadgroup: MTLSize)
```

## Parameters

`threadsPerGrid`

An [`MTLSize`](/documentation/Metal/MTLSize) instance that represents the number of threads for each grid dimension.

    For mesh shaders, the command rounds the value down to the nearest multiple of     `threadsPerMeshThreadgroup`     for each dimension.

    For object shaders, the value doesn’t need to be a multiple of     `threadsPerObjectThreadgroup`    .

`threadsPerObjectThreadgroup`

An [`MTLSize`](/documentation/Metal/MTLSize) instance that represents the number of threads in an object shader threadgroup, if applicable.

`threadsPerMeshThreadgroup`

An [`MTLSize`](/documentation/Metal/MTLSize) instance that represents the number of threads in a mesh shader threadgroup.

## Discussion

---

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