# Parked for later milestones

Issues found while building, with the milestone that owns them.

## M7

- vkcube shows a black window for about half a second at startup since early import, first-buffer holds and explicit sync landed. A spans log of a launch tells which.
- Every 1024th queue submit on NVIDIA stalls for 2.5 to 15 ms, one dropped frame every 6.2 s at 165 Hz. See research/nvidia.md.
- First-time dmabuf imports (15 to 27 ms each on NVIDIA) and direct scanout setup on fullscreen still land on the main thread and cost about ten frames per transition.

## After M6

- Window sharing through portals needs ext-foreign-toplevel-list and toplevel capture sources. Output capture works.
- Taskbars want wlr-foreign-toplevel-management, which smithay does not ship.
- X11 windows do not raise in X stacking order on focus, which only matters for overlapping floating X windows.
- Dialogs from xdg toplevels with a parent tile like any window. X11 dialogs, transients and fixed-size windows float.