One Shot Radiance - Install PBRT-OSR Only

1 - Install prerequisites

Automatic: AutoDependencies

Manual: ManualDependencies

2 - Get PBRTv3-IILE

Download PBRT-IILE.tgz from https://github.com/giuliojiang/pbrt-v3-IISPT/releases

And extract into any directory. The top level pbrt is a launcher for the renderer.

If you install the Blender plugin manually, specify the build directory to PBRT-IILE/iile/build