# Combine 4 Combines the channels from four streams into four channels of a single output stream of a compatible type. ## Parameter Types **Combine 4 (color4f):** |Input |Type | |------|-----| |`In 1`|Float| |`In 2`|Float| |`In 3`|Float| |`In 4`|Float| |Output|Type | |------|-------------| |`Out` |Color4| **Combine 4 (vector4h):** |Input |Type| |------|----| |`In 1`|Half| |`In 2`|Half| |`In 3`|Half| |`In 4`|Half| |Output|Type | |------|--------| |`Out` |Vector4h| **Combine 4 (color4h):** |Input |Type| |------|----| |`In 1`|Half| |`In 2`|Half| |`In 3`|Half| |`In 4`|Half| |Output|Type | |------|-------------| |`Out` |Color4| **Combine 4 (integer4):** |Input |Type | |------|-----| |`In 1`|Int32| |`In 2`|Int32| |`In 3`|Int32| |`In 4`|Int32| |Output|Type | |------|--------| |`Out` |Integer4| **Combine 4 (vector4f):** |Input |Type | |------|-----| |`In 1`|Float| |`In 2`|Float| |`In 3`|Float| |`In 4`|Float| |Output|Type | |------|--------| |`Out` |Vector4f| **Combine 4 (matrix4x4f):** |Input |Type | |------|--------| |`In 1`|Vector4f| |`In 2`|Vector4f| |`In 3`|Vector4f| |`In 4`|Vector4f| |Output|Type | |------|----------| |`Out` |Matrix4x4f| --- 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)