Autobump is a feature that automatically adds bump mapping to objects using displacement to enhance surface details and improve the overall image quality. This also means that the displacement quality can be lowered (in the Performance tab of the Render Setup window) while maintaining good image quality, which results in lower RAM usage.
Autobump affects:
- Objects with displacement coming from their materials
- Objects with displacement coming from the CoronaDisplacementMod modifier
Examples
Autobump off
Autobump off, displacement screen size: 1 px, RAM usage: 6,3 GB
Autobump on
Comparison - autobump off, displacement size 2 px (left) VS autobump on, displacement size 4 px (right). RAM usage: 1,7 GB VS 814 MB.
Click HERE to view the comparison.
Disabling Autobump
Generally, there is no need ever to disable the Autobump feature. Still, if you want to do it (for any reason - for example, to test it on and off), you can go to Development / Experimental stuff rollout (3ds Max | C4D), scroll down to the "displacement" section, and uncheck the "Apply automatic bump" option.
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Location of the Autobump option in 3dsmax. |
Location of the Autobump option in C4D |