# Rendering volume to fixed resolution output then rescale to window

**URL:** https://discourse.vtk.org/t/rendering-volume-to-fixed-resolution-output-then-rescale-to-window/1156
**Category:** Development
**Created:** [June 17, 2019, 10:08am UTC](https://discourse.vtk.org/t/rendering-volume-to-fixed-resolution-output-then-rescale-to-window/1156 "2019-06-17T10:08:08Z")
**Posts on this page:** 1
**Page:** 1

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### Author: ![klayman](https://discourse.vtk.org/user_avatar/discourse.vtk.org/klayman/32/533_2.png) [@klayman](https://discourse.vtk.org/u/klayman)
#### Post date: [June 17, 2019, 10:08am UTC](https://discourse.vtk.org/t/rendering-volume-to-fixed-resolution-output-then-rescale-to-window/1156/1 "2019-06-17T10:08:08Z")

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Hello, how do I setup the volume mapper + render window (+ potential new nodes in the pipeline) to ensure I never use an output render target which is larger than a certain maximum width,height? I want to keep rendering interactive even if the final viewport is resized to large resolution on qhd monitor.

Say Volume … Target (512,512) … Final render window(2048,1024).

I would like to keep things interactive and allow things like rotating the volume and picking. If it’s already supported, all the better, otherwise I would be happy to take suggestions on which base classes to start from.