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# setColorAttachmentMap(_:)

Sets the mapping from logical shader color output to physical render pass color attachments.

```
func setColorAttachmentMap(_ mapping: MTLLogicalToPhysicalColorAttachmentMap?)
```

## Parameters

`mapping`

Mapping from logical shader outputs to physical outputs.

## Discussion

Use this method to define how the physical color attachments you specify via [`colorAttachments`](/documentation/Metal/MTL4RenderPassDescriptor/colorAttachments)
map to the logical color output the fragment shader writes to.

To use this feature, make sure to set [`supportColorAttachmentMapping`](/documentation/Metal/MTL4RenderPassDescriptor/supportColorAttachmentMapping) to
<doc://com.apple.documentation/documentation/Swift/true>.

---

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