What is .RAD file?
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
Recommended Software Programs to open .RAD file
- Valve VRAD
- Valve Source SDK