---
title: "render(withViewport:commandBuffer:passDescriptor:)"
framework: scenekit
role: symbol
role_heading: Instance Method
path: "scenekit/scnrenderer/render(withviewport:commandbuffer:passdescriptor:)"
---

# render(withViewport:commandBuffer:passDescriptor:)

## Declaration

```swift
func render(withViewport viewport: CGRect, commandBuffer: any MTLCommandBuffer, passDescriptor renderPassDescriptor: MTLRenderPassDescriptor)
```