Author Topic: Selection Render Improvement  (Read 781 times)

2022-09-15, 14:21:34


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I'm really disappointed to see the Render Selected option not helping reduce the rendering times as much as it can. Let me clarify what I mean and discuss what can be done:

I needed to change the texture of a small box object in one of my scenes, and I've had the chance to use selection render for the first time.
Whole frame rendering of 500 frames animation would last about 5.5 hours.
Selection mode with single object selection reported  3 hours 25 minutes, which according to my experience with other renderers, I found unnecessarily long.

I've set a region along with Selected option and now the predicted time is 1 hour 25 minutes.

The predictions are solid.

It seems a feature to set a border region around selected object's extents and render only that region would help reduce rendering times drastically.

This reduced the rendering time to almost a half.

In my case, as the camera was moving, I've set the region extents to cover the object's extents throughout the entire animation so this is even less efficient than what you can implement as a feature.

Feature Name : Auto Region Selected :D - or just go on with the Selected but set a region. ı guess it will work.

2022-09-15, 17:54:34
Reply #1


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Auto Region Selected :D - or just go on with the Selected but set a region. ı guess it will work.

What about "Auto Region Selected", native Max feature? Many drawbacks, I know. But you seem to need it to render just on your box, should work fine if you use a fixed light cache (and no caustics).

Any "Render viewport selected" would not work as a network job. So yes, the feature to render a crop box together with Corona "Render selected" include/exclude feature would be kind of a solution. Or -even better- speedup of the current feature.

I remember having used a bounding box, invisible by material to track and render the area/object I need. This way I was even able to send it to the farm. I'd have to look up the setup for details though. Pitfalls here as well of course.

Good Luck

Never underestimate the power of a well placed level one spell.

2022-09-28, 12:09:43
Reply #2


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We already have this request logged in our system to be further investigated by our devs. If there will be any updates, we will let you know.

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