Procedural Compositing with Batch > Batch FX >

# Previewing Batch FX

You can preview unrendered Batch FX outside of a BFX level. While you scrub the timeline, you can trigger a Batch FX render at pen-up. Batch setups are loaded and rendered at pen-up based on a timing preference you set. This preference determines how long the software will attempt the render before displaying an “Unrendered Frame” message.

Although you can preview soft effects by rendering while you scrub, Batch FX can only be rendered at pen-up.

Memory usage is optimized as much as possible so that all necessary Batch setups can be loaded into memory for the render of the current frame.

Any frames rendered are not rendered again as long as the Batch setup is not changed.

To preview Batch FX:

1. Display the Preferences menu and click Modules/Soft FX. In the Batch FX group, enter the number of seconds in the Interactive Max field that you want the system to attempt a render.
2. Display the Player and select Preview FX from the Preview option box.
3. Scrub the timeline positioner.