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# MTLIndirectRenderCommand

A render command in an indirect command buffer.

```
protocol MTLIndirectRenderCommand : NSObjectProtocol
```

## Overview

Don’t implement this protocol; you get instances of this type by asking an [`MTLIndirectCommandBuffer`](/documentation/Metal/MTLIndirectCommandBuffer) for them.

Use this instance to reset or encode a command. You need to reset a command before encoding a new command.

## Topics

### Setting command arguments

[`setRenderPipelineState(_:)`](/documentation/Metal/MTLIndirectRenderCommand/setRenderPipelineState(_:))

Sets the render pipeline state for the command.

[`setVertexBuffer(_:offset:at:)`](/documentation/Metal/MTLIndirectRenderCommand/setVertexBuffer(_:offset:at:))

Sets a vertex buffer argument for the command.

[`setFragmentBuffer(_:offset:at:)`](/documentation/Metal/MTLIndirectRenderCommand/setFragmentBuffer(_:offset:at:))

Sets a fragment buffer argument for the command.

### Encoding a drawing command

[`drawPrimitives(_:vertexStart:vertexCount:instanceCount:baseInstance:)`](/documentation/Metal/MTLIndirectRenderCommand/drawPrimitives(_:vertexStart:vertexCount:instanceCount:baseInstance:))

Encodes a command to render a number of instances of primitives using vertex data in contiguous array elements, starting from the base instance.

[`drawIndexedPrimitives(_:indexCount:indexType:indexBuffer:indexBufferOffset:instanceCount:baseVertex:baseInstance:)`](/documentation/Metal/MTLIndirectRenderCommand/drawIndexedPrimitives(_:indexCount:indexType:indexBuffer:indexBufferOffset:instanceCount:baseVertex:baseInstance:))

Encodes a command to render a number of instances of primitives using an index list specified in a buffer, starting from the base vertex of the base instance.

[`drawPatches(_:patchStart:patchCount:patchIndexBuffer:patchIndexBufferOffset:instanceCount:baseInstance:tessellationFactorBuffer:tessellationFactorBufferOffset:tessellationFactorBufferInstanceStride:)`](/documentation/Metal/MTLIndirectRenderCommand/drawPatches(_:patchStart:patchCount:patchIndexBuffer:patchIndexBufferOffset:instanceCount:baseInstance:tessellationFactorBuffer:tessellationFactorBufferOffset:tessellationFactorBufferInstanceStride:))

Encodes a command to render a number of instances of tessellated patches.

[`drawIndexedPatches(_:patchStart:patchCount:patchIndexBuffer:patchIndexBufferOffset:controlPointIndexBuffer:controlPointIndexBufferOffset:instanceCount:baseInstance:tessellationFactorBuffer:tessellationFactorBufferOffset:tessellationFactorBufferInstanceStride:)`](/documentation/Metal/MTLIndirectRenderCommand/drawIndexedPatches(_:patchStart:patchCount:patchIndexBuffer:patchIndexBufferOffset:controlPointIndexBuffer:controlPointIndexBufferOffset:instanceCount:baseInstance:tessellationFactorBuffer:tessellationFactorBufferOffset:tessellationFactorBufferInstanceStride:))

Encodes a command to render a number of instances of tessellated patches, using a control point index buffer.

### Resetting a command

[`reset()`](/documentation/Metal/MTLIndirectRenderCommand/reset())

Resets the command to its default state.


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