Feature Request Costume editor to write to terrain Detail Maps?, cant find a texture

I'm creating a terrain graph editor to generate levels for my game, and I'm trying to efficiently access and set the detail terrain map, but it seams like there is no access to a texture like with the splat maps (alpha textures) or the height maps.
I know of

GetDetailLayer

and

SetDetailLayer

but im looking for a sulotion similer to

CopyActiveRenderTextureToTexture()

or the

DirtyHeightmapRegion()

would really help as all of the operations in my editor are calculated on the GPU so to transfer data to the CPU and then do a for loop seams a bit in-efficient.

Any suggetsions?

 

Thanks for the reply, and also for the compliment
There are some heavy calculations in the erosion sim that take some time anyway so there is a short wait,
I just wanted to make sure I didn't miss anything.

From my experimentation I figures that the value in the stored detail maps is the actual count of detail per "texel",
so if I put for example map[x,y] = 5
the amount of details in texel x,y will be 5,
is that correct?

I also thought about processing this on a compute shader so it can read the texture without passing through the CPU and at the end just spit out a compute buffer with a dataset that matches the detail map