3dartist Final Grade

Lightwave & Radiosity

So I was waiting on a render of my Rolex Yacht-master II the other day, and having read a few posts recently by Dave Jerrard on Facebook about his monstrous 32 core workstation; I commented how a little more horsepower would be nice. The subsequent conversation with him was very interesting in terms of the practical outcome. First, a grab of my render in progress (check out the time remaining!)

Now I know these estimates are not accurate, but none the less when you are waiting on a render, it’s depressing to see. The settings for that render were as below.

As you can see Final Gather radiosity was set and interpolated with settings that had worked pretty well on my vehicle renders. It was suggested that what I might want to do would be to use Monte Carlo instead, but WITHOUT interpolation, and with the RPE set really low around 4 or 5. Additionally, given the model I was rendering, the shading and lighting samples while not OTT at 4 would be fine at 1. i also took the opportunity to remove the secondary bounce and to stay with a single bounce.

These were the revised settings.

The maximum samples value on the camera tab is one that needs to be tested and tweaked for your specific render, but I chose just to stick on 128 and get my render going. What was the upshot? Well the render came home in 3h 22m 53s rendering at 3000 x 2000. Pretty good all in all I thought. A few more minutes on top to get an AO render and a depth pass. Job Done!

So when I thought interpolated must be the quickest way to go is not always true, and in this instance was very much slower.

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