Bug 700964

Summary:	games-emulation/dolphin-9999 missing dependency on media-libs/mesa with USE=vulkan
Product:	Gentoo Linux	Reporter:	dhirs
Component:	Current packages	Assignee:	Sergei Trofimovich (RETIRED) <slyfox>
Status:	RESOLVED WONTFIX
Severity:	normal	CC:	jstein, mattst88
Priority:	Normal
Version:	unspecified
Hardware:	All
OS:	Linux
Whiteboard:
Package list:		Runtime testing required:	---

Description dhirs 2019-11-23 02:48:48 UTC

If I try to select the Vulkan backend in Dolphin, then a window pops up saying: "Failed to create Vulkan instance" and the game will not play. But if I add the line "media-libs/mesa vulkan" to /etc/portage/package.use and remerge mesa, it works fine.

Comment 1 Matt Turner gentoo-dev

2019-11-23 03:42:59 UTC

I'm not sure how this should be handled. Presumably the proprietary nvidia-drivers provide vulkan support.

The vulkan-loader is going to load a driver, given whatever hardware is in your system. We could have a virtual/vulkan package, but I'm not really sold on the benefits of that. Not really sure.

Comment 2 Sergei Trofimovich (RETIRED) gentoo-dev

2019-11-23 16:15:10 UTC

Gentoo usually does not add optional runtime-only dependencies to packages.

On top of that see Matt's comment on how to express dependency on vulkan in general.