media-video/mpv: add vulkan support to 9999

Implementation details:
- mpv requires at least one enabled vulkan context (X or wayland),
  even though this isn't reflected by the build system. Hence the
  REQUIRED_USE. Without this you cannot enable vulkan backend.
- The appropriate context must be enabled in vulkan-loader.
- mpv technically allows vulkan without shaderc on NVIDIA cards,
  but support for this in NVIDIA drivers is deprecated and going
  away, see [1]. Thus always require shaderc.

[1]: https://github.com/mpv-player/mpv/issues/5867
Package-Manager: Portage-2.3.40, Repoman-2.3.9

2 files changed, 9 insertions, 1 deletions

diff --git a/media-video/mpv/metadata.xml b/media-video/mpv/metadata.xml
index df0200d2936c..1eb1494cbbc8 100644
--- a/media-video/mpv/metadata.xml
+++ b/media-video/mpv/metadata.xml
@@ -33,6 +33,7 @@
 			(Note: these outputs exist for compatibility reasons only, avoid if possible)</flag>
 		<flag name="tools">Install extra tools: mpv_identify.sh, mpv_idet.sh, and umpv</flag>
 		<flag name="uchardet">Enable subtitles charset discovery via <pkg>app-i18n/uchardet</pkg></flag>
+		<flag name="vulkan">Enable support for various Vulkan-based video backends</flag>
 	</use>
 	<upstream>
 		<remote-id type="github">mpv-player/mpv</remote-id>
diff --git a/media-video/mpv/mpv-9999.ebuild b/media-video/mpv/mpv-9999.ebuild
index 8601e37b4bdf..f99a57b4a267 100644
--- a/media-video/mpv/mpv-9999.ebuild
+++ b/media-video/mpv/mpv-9999.ebuild
@@ -31,7 +31,7 @@ SLOT="0"
 IUSE="+alsa aqua archive bluray cdda +cli coreaudio cplugins cuda doc drm dvb
 	dvd +egl gbm +iconv jack javascript jpeg lcms +libass libav libcaca libmpv
 	+lua luajit openal +opengl oss pulseaudio raspberry-pi rubberband samba sdl
-	selinux test tools +uchardet v4l vaapi vdpau wayland +X +xv zlib
+	selinux test tools +uchardet v4l vaapi vdpau vulkan wayland +X +xv zlib
 	zsh-completion"
 
 REQUIRED_USE="
@@ -50,6 +50,7 @@ REQUIRED_USE="
 	v4l? ( || ( alsa oss ) )
 	vaapi? ( || ( gbm X wayland ) )
 	vdpau? ( X )
+	vulkan? ( || ( X wayland ) )
 	wayland? ( egl )
 	X? ( egl? ( opengl ) )
 	xv? ( X )
@@ -96,6 +97,10 @@ COMMON_DEPEND="
 	v4l? ( media-libs/libv4l )
 	vaapi? ( x11-libs/libva:=[drm?,X?,wayland?] )
 	vdpau? ( x11-libs/libvdpau )
+	vulkan? (
+		media-libs/shaderc
+		media-libs/vulkan-loader[X?,wayland?]
+	)
 	wayland? (
 		>=dev-libs/wayland-1.6.0
 		>=dev-libs/wayland-protocols-1.14
@@ -231,10 +236,12 @@ src_configure() {
 		$(usex vaapi "$(use_enable gbm vaapi-drm)" '--disable-vaapi-drm')
 		$(use_enable libcaca caca)
 		$(use_enable jpeg)
+		$(use_enable vulkan shaderc)
 		$(use_enable raspberry-pi rpi)
 		$(usex libmpv "$(use_enable opengl plain-gl)" '--disable-plain-gl')
 		--disable-mali-fbdev # Only available in overlays.
 		$(usex opengl '' '--disable-gl')
+		$(use_enable vulkan)
 
 		# HWaccels:
 		# Automagic Video Toolbox HW acceleration. See Gentoo bug 577332.