Description:

Render Region - 3DS MAX scripted RenderEffect. While render region Mental Ray blacks out everything but the region render after it's done. This scripted RenderEffect allowes the previous image to remain in the VFB, along with the newly rendered region.

UI:

Clear Buffer - clears previous image which defines by this script, but doesn't clear visually Last Rendered Image.

Installation Instructions:

Scripted Render Effect (*.ms) should be placed in maxroot/plugins/ and are then accessed through the "Effects panel" in 3dsmax.

How to use render effects read in the 3dsmax help, chapter "Effects Panel and Rollout"