Rhino Render Options
Tools > Options > Rhino Render Options
The Rhino Render options manage settings for the legacy Rhino Render engine.
General
Two-stage render, ask for rectangular region to render first
Render and RenderPreview commands render the scene in two stages. Render the most important detail first to make sure it looks right. If it does, wait for the image to finish. If not, cancel the render and continue editing.
- Select a rectangular area to render first.
- Press Enter to use previous rectangle.
- Press Esc for no rectangle.
The rest of the image is rendered automatically right after rendering and displaying the selected area.
Multithreading
Number of render threads
Controls the number of threads used for rendering. If you have a dual core or dual or quad CPU computer, you can speed up rendering by using multiple simultaneous render threads. There is very little overhead in setting up the multiple threads.
Auto
The render automatically uses as many threads as there are cores in the CPU.
Numbers
Set a number of cores to use.
Thread priority
Controls the relative priority of the rendering compared to other processes. The lower the priority, the more responsive your computer will be while rendering, at the expense of rendering speed, and vice versa.
Save option settings for use on other computers

OptionsExport
Save Options settings to a file.

OptionsImport
Restore Options settings from a file.