difference in usage of functions

[Rasesh2005]

The GaussianRasterizer method from diff_gaussian_rasterization returns a rasterizer function which on call, returns image, radii, depth and alpha details of the image, that is 4 parameters, but GaussianRasterizer from fast_gauss returns only image and alpha..

But According to README.md its misleading that the functions are exactly same..

How do I get the depth and radii information as well using fast_gauss ??

[Rasesh2005]

@fishfishson @dendenxu kindly clarify..