Trivial technical question

[Pilou]

Say I have a forest
I zoom only one tree on the screen
Does Twilight make a sort of "clipping" or all the forest is calculated for the rendering?

[Chris]

Good question. No, Twilight doesn't do any sort of clipping. Under 'most' circumstances, you probably wouldn't want it to because lighting, shadow and reflection often come from things "off screen".

[Pilou]

So does the render "Selection" for one tree selected is a good solution for a speedy render?
Or I must "hide" rest of the nature?
Or kill the forest except one? (not ecologic

[Chris]

"Render selection" will only render the selected geometry and will provide a faster render, definitely. However, the amount of time it takes to process your geometry may or may not significantly improve depending on how many unique components you are using.