File Type : Radiance Scene Description Format
Compatible with (Win10, Win8, Win7, Vista and WinXP)
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3D lighting file used by VRAD, a command line program that adds light properties to a .BSP first-person shooter game map file; stores lighting properties for materials, which define the surface appearance of 3D objects.
RAD files are specified in an XML format. They can include settings for normal LDR and HDR (high dynamic range) color and intensity.
To compile lighting properties into an existing BSP map file, use the following command: vrad -lights bspmapname.rad
You can see a list of software programs here on www.easyfileopener.org that can open this file type so that you don’t need to search for it on the web. You can then open your file with this extension using a software listed below.
Software that can be used to open RADfiles: