These are the packages that would be merged, in order:

Calculating dependencies ... done!
Dependency resolution took 1.01 s (backtrack: 0/20).

[ebuild  N     ] x11-libs/libvdpau-1.5::gentoo  USE="-doc -dri -test" 140 KiB
[ebuild  N     ] x11-misc/vdpauinfo-1.5-r1::gentoo  12 KiB

Total: 2 packages (2 new), Size of downloads: 152 KiB