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# MTLDispatchThreadgroupsIndirectArguments

The data layout required for arguments needed to specify the size of threadgroups.

```
struct MTLDispatchThreadgroupsIndirectArguments
```

## Topics

### Creating dispatch arguments

### Specifying the size of the threadgroup

[`init()`](/documentation/Metal/MTLDispatchThreadgroupsIndirectArguments/init())

Returns a new data layout for dispatching threadgroups over indirect buffer calls.

[`init(threadgroupsPerGrid:)`](/documentation/Metal/MTLDispatchThreadgroupsIndirectArguments/init(threadgroupsPerGrid:))

Returns a new data layout for dispatching threadgroups over indirect buffer calls, with specified threadgroups per grid.

[`threadgroupsPerGrid`](/documentation/Metal/MTLDispatchThreadgroupsIndirectArguments/threadgroupsPerGrid)

The number of threadgroups for the grid, in each dimension.

## See Also

[`dispatchThreadgroups(indirectBuffer:indirectBufferOffset:threadsPerThreadgroup:)`](/documentation/Metal/MTLComputeCommandEncoder/dispatchThreadgroups(indirectBuffer:indirectBufferOffset:threadsPerThreadgroup:))

Encodes a dispatch call for a compute pass, using an indirect buffer that defines the size of a grid that aligns to threadgroup boundaries.


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