Confusing parameters for "xrand --setprovideroffloadsink"
quwenruo.btrfs at gmx.com
Tue Dec 25 08:09:55 UTC 2018
I'm trying to understand what the parameters of "xrand
Google/Arch shows a lot of eGPU use cases, where user should just exec
"xrandr --setprovideroffloadsink 1 0", to make the secondary GPU to
output to the first one.
However the man page also shows:
If sink is 0x0, then provider is disconnected from its current
render offload sink.
I checked the code of xrandr.c, set_name() will first try to
sscanf("0x%x"), and if hit pass it as @xid, while for normal "%d" it
passes the value to @idx, and finally use char*.
I'm wonder what's the difference between @xid and @idx and char* name.
My current guess is, with the listproviders output it would be:
Provider 0: id: 0x5a ... name:Radeon RX 580 Series @ pci:0000:26:00.0
^ ^^^^ ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
| | |- name?
| |- @xid?
Personally it's pretty confusing at least.
-------------- next part --------------
A non-text attachment was scrubbed...
Size: 488 bytes
Desc: OpenPGP digital signature
More information about the xorg