# inherit from vtkRenderPass, but the viewport the pass render into isNot the same as the setting viewport to the render.Why?

**URL:** https://discourse.vtk.org/t/inherit-from-vtkrenderpass-but-the-viewport-the-pass-render-into-isnot-the-same-as-the-setting-viewport-to-the-render-why/12204
**Category:** Support
**Created:** [August 26, 2023, 4:00pm UTC](https://discourse.vtk.org/t/inherit-from-vtkrenderpass-but-the-viewport-the-pass-render-into-isnot-the-same-as-the-setting-viewport-to-the-render-why/12204 "2023-08-26T16:00:39Z")
**Posts on this page:** 1
**Page:** 1

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### Author: ![gpu](https://discourse.vtk.org/letter_avatar_proxy/v4/letter/g/e47c2d/32.png) [@gpu](https://discourse.vtk.org/u/gpu)
#### Post date: [August 26, 2023, 4:00pm UTC](https://discourse.vtk.org/t/inherit-from-vtkrenderpass-but-the-viewport-the-pass-render-into-isnot-the-same-as-the-setting-viewport-to-the-render-why/12204/1 "2023-08-26T16:00:39Z")

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inherit from vtkRenderPass, but the viewport the pass render into isNot the same as the setting viewport to the render.Why?