zig build run -Doptimize=ReleaseSafe -- --scene-path PATH_TO_SCENE
glTF scenes require vetex UVs, normals and tangets along with materials for all meshes.
The glTF sample assets can be used to test the path tracer but some might need to have tangents added to them.
--scene-pathsets the path to the glTF scene to be rendered, no default this argument is required.--num-samplessets the number of samples which are taken every frame, default is 1.--num-bouncessets the number of bounces a ray can make before being terminated, default is 2.