media-libs/mesa: Version bump to 20.1.6

Signed-off-by: Matt Turner <mattst88@gentoo.org>

2 files changed, 558 insertions, 0 deletions

diff --git a/media-libs/mesa/Manifest b/media-libs/mesa/Manifest
index e16cc7bd92dd..a96a4157ff58 100644
--- a/media-libs/mesa/Manifest
+++ b/media-libs/mesa/Manifest
@@ -1,5 +1,6 @@
 DIST mesa-20.0.8.tar.xz 12360736 BLAKE2B 19e3f8a40b34b5f17ed76077c5d92f728a134b2479c43d86674ed1818ab99639a9b732041f67488251df808564f6abe5b587d756ef9c7c13dcada87cd0fc05de SHA512 d906330c412899907dd05a84034a929107fccaf3044814c4b1f30ba5690cbcf1587b5f17534c6345111f3cb7cf292afd5984a60486643ff6f534b57cec615374
 DIST mesa-20.1.4.tar.xz 12758452 BLAKE2B 2f4e4563382a455f7fd6ac0bb32c91901c4ca4fa297da7769b40722713316ba9a6b8acc7bd5ae9df46b9ffea6bee13cdf2a8dd4fe747ac61dc052391aeae18d9 SHA512 f4d79694cda8531e7560147caf5d18bce5c685cd6c61264dced5adaa9043be9c83d3a2bd623ebffedc8d4258b9b1f97d84d9aeea307aa77cf99d0bc47c987155
 DIST mesa-20.1.5.tar.xz 12783368 BLAKE2B f452832b3ed3468d01b7129cd782f3b58752a6de511679c9bd7eca7a5728630202a185e61f435c172f84d4ef6ffd05bbf7873e5f8c4cc64572d3b5a38e5ebf28 SHA512 47796bf2cccfd054ff25f571747754e0ab9b42fe87644ea320b3d9497d63b3013e9b7e59ea0516bbd1a38b5594e0d185bf5a36230ea5c5974e7ff889cee2601e
+DIST mesa-20.1.6.tar.xz 12805724 BLAKE2B d652b59e4987436d2e05de9138f2e2fb4a8bf435c24d9c7ad08bcb82a3bf7c9c64bc71b15b4b6d334f8b574341719f372aa1b893283abc21191a4d71d9d30fee SHA512 5ef28334ecb7effaaf597ea3efe0406af62419e6fa629e835d843161ab8d83515626ec0f0495c4cc66af9e5669398ac96c16ca626e4965a9831e1704c995fb09
 DIST mesa-20.2.0-rc1.tar.xz 13521940 BLAKE2B 6e9fdc8fa9d2b0f9bd72b033d710b0cbc10d4434adc5d702576cc08559ad32f83983cb3ba44f96a1f740c626429cc386a4e14ee4fa5549c2f3dbb942243b1641 SHA512 d86e52a985d94e3d5b5ef7799acf4fced72df6cd68b29e1fef2c7755144d9633d74f648d8434699497d38b50f0d1a12d12a135a45ea5bc4cf22f2033a3651aac
 DIST mesa-20.2.0-rc2.tar.xz 13528208 BLAKE2B 6505446829ec2c01c0de7a7d9c1187db874111402da5ffe2f9f5872df7b6a5e53a3b628c190172bb9a806851b3b85aa0e3b53a4fcfb40f99adfc48cc3876c9f5 SHA512 36d9a74db50335bd31a8d5c47f7c657f05eeda044530fe123c06c472ed27c9b5dff19716d11d95256449223e82dde38895547cf6ae60b7460d3b1e9ed440704a
diff --git a/media-libs/mesa/mesa-20.1.6.ebuild b/media-libs/mesa/mesa-20.1.6.ebuild
new file mode 100644
index 000000000000..f50ead679471
--- /dev/null
+++ b/media-libs/mesa/mesa-20.1.6.ebuild
@@ -0,0 +1,557 @@
+# Copyright 1999-2020 Gentoo Authors
+# Distributed under the terms of the GNU General Public License v2
+
+EAPI=7
+
+PYTHON_COMPAT=( python3_{6,7,8} )
+
+inherit llvm meson multilib-minimal python-any-r1 linux-info
+
+OPENGL_DIR="xorg-x11"
+
+MY_P="${P/_/-}"
+
+DESCRIPTION="OpenGL-like graphic library for Linux"
+HOMEPAGE="https://www.mesa3d.org/ https://mesa.freedesktop.org/"
+
+if [[ ${PV} == 9999 ]]; then
+	EGIT_REPO_URI="https://gitlab.freedesktop.org/mesa/mesa.git"
+	inherit git-r3
+else
+	SRC_URI="https://mesa.freedesktop.org/archive/${MY_P}.tar.xz"
+	KEYWORDS="~alpha ~amd64 ~arm ~arm64 ~hppa ~ia64 ~mips ~ppc ~ppc64 ~s390 ~sparc ~x86 ~amd64-linux ~x86-linux ~sparc-solaris ~x64-solaris ~x86-solaris"
+fi
+
+LICENSE="MIT"
+SLOT="0"
+RESTRICT="
+	!test? ( test )
+"
+
+RADEON_CARDS="r100 r200 r300 r600 radeon radeonsi"
+VIDEO_CARDS="${RADEON_CARDS} freedreno i915 i965 intel iris lima nouveau panfrost vc4 virgl vivante vmware"
+for card in ${VIDEO_CARDS}; do
+	IUSE_VIDEO_CARDS+=" video_cards_${card}"
+done
+
+IUSE="${IUSE_VIDEO_CARDS}
+	+classic d3d9 debug +dri3 +egl +gallium +gbm gles1 +gles2 +libglvnd +llvm
+	lm-sensors opencl osmesa selinux test unwind vaapi valgrind vdpau vulkan
+	vulkan-overlay wayland +X xa xvmc +zstd"
+
+REQUIRED_USE="
+	d3d9?   ( dri3 || ( video_cards_iris video_cards_r300 video_cards_r600 video_cards_radeonsi video_cards_nouveau video_cards_vmware ) )
+	gles1?  ( egl )
+	gles2?  ( egl )
+	vulkan? ( dri3
+			  video_cards_radeonsi? ( llvm ) )
+	vulkan-overlay? ( vulkan )
+	wayland? ( egl gbm )
+	video_cards_freedreno?  ( gallium )
+	video_cards_intel?  ( classic )
+	video_cards_i915?   ( || ( classic gallium ) )
+	video_cards_i965?   ( classic )
+	video_cards_iris?   ( gallium )
+	video_cards_lima?   ( gallium )
+	video_cards_nouveau? ( || ( classic gallium ) )
+	video_cards_panfrost? ( gallium )
+	video_cards_radeon? ( || ( classic gallium )
+						  gallium? ( x86? ( llvm ) amd64? ( llvm ) ) )
+	video_cards_r100?   ( classic )
+	video_cards_r200?   ( classic )
+	video_cards_r300?   ( gallium x86? ( llvm ) amd64? ( llvm ) )
+	video_cards_r600?   ( gallium )
+	video_cards_radeonsi?   ( gallium llvm )
+	video_cards_vc4? ( gallium )
+	video_cards_virgl? ( gallium )
+	video_cards_vivante? ( gallium gbm )
+	video_cards_vmware? ( gallium )
+	xa? ( X )
+	xvmc? ( X )
+"
+
+LIBDRM_DEPSTRING=">=x11-libs/libdrm-2.4.100"
+RDEPEND="
+	!app-eselect/eselect-mesa
+	>=dev-libs/expat-2.1.0-r3:=[${MULTILIB_USEDEP}]
+	>=sys-libs/zlib-1.2.8[${MULTILIB_USEDEP}]
+	libglvnd? (
+		>=media-libs/libglvnd-1.2.0-r1[X?,${MULTILIB_USEDEP}]
+		!app-eselect/eselect-opengl
+	)
+	!libglvnd? (
+		>=app-eselect/eselect-opengl-1.3.0
+	)
+	gallium? (
+		unwind? ( sys-libs/libunwind[${MULTILIB_USEDEP}] )
+		llvm? (
+			video_cards_radeonsi? (
+				virtual/libelf:0=[${MULTILIB_USEDEP}]
+			)
+			video_cards_r600? (
+				virtual/libelf:0=[${MULTILIB_USEDEP}]
+			)
+			video_cards_radeon? (
+				virtual/libelf:0=[${MULTILIB_USEDEP}]
+			)
+		)
+		lm-sensors? ( sys-apps/lm-sensors:=[${MULTILIB_USEDEP}] )
+		opencl? (
+					>=virtual/opencl-3[${MULTILIB_USEDEP}]
+					dev-libs/libclc
+					virtual/libelf:0=[${MULTILIB_USEDEP}]
+				)
+		vaapi? (
+			>=x11-libs/libva-1.7.3:=[${MULTILIB_USEDEP}]
+		)
+		vdpau? ( >=x11-libs/libvdpau-1.1:=[${MULTILIB_USEDEP}] )
+		xvmc? ( >=x11-libs/libXvMC-1.0.8:=[${MULTILIB_USEDEP}] )
+	)
+	selinux? ( sys-libs/libselinux[${MULTILIB_USEDEP}] )
+	wayland? (
+		>=dev-libs/wayland-1.15.0:=[${MULTILIB_USEDEP}]
+		>=dev-libs/wayland-protocols-1.8
+	)
+	${LIBDRM_DEPSTRING}[video_cards_freedreno?,video_cards_nouveau?,video_cards_vc4?,video_cards_vivante?,video_cards_vmware?,${MULTILIB_USEDEP}]
+	video_cards_intel? (
+		!video_cards_i965? ( ${LIBDRM_DEPSTRING}[video_cards_intel] )
+	)
+	video_cards_i915? ( ${LIBDRM_DEPSTRING}[video_cards_intel] )
+	vulkan-overlay? ( dev-util/glslang:0=[${MULTILIB_USEDEP}] )
+	X? (
+		>=x11-libs/libX11-1.6.2:=[${MULTILIB_USEDEP}]
+		>=x11-libs/libxshmfence-1.1:=[${MULTILIB_USEDEP}]
+		>=x11-libs/libXdamage-1.1.4-r1:=[${MULTILIB_USEDEP}]
+		>=x11-libs/libXext-1.3.2:=[${MULTILIB_USEDEP}]
+		>=x11-libs/libXxf86vm-1.1.3:=[${MULTILIB_USEDEP}]
+		>=x11-libs/libxcb-1.13:=[${MULTILIB_USEDEP}]
+		x11-libs/libXfixes:=[${MULTILIB_USEDEP}]
+	)
+	zstd? ( app-arch/zstd:=[${MULTILIB_USEDEP}] )
+"
+for card in ${RADEON_CARDS}; do
+	RDEPEND="${RDEPEND}
+		video_cards_${card}? ( ${LIBDRM_DEPSTRING}[video_cards_radeon] )
+	"
+done
+RDEPEND="${RDEPEND}
+	video_cards_radeonsi? ( ${LIBDRM_DEPSTRING}[video_cards_amdgpu] )
+"
+
+# Please keep the LLVM dependency block separate. Since LLVM is slotted,
+# we need to *really* make sure we're not pulling one than more slot
+# simultaneously.
+#
+# How to use it:
+# 1. List all the working slots (with min versions) in ||, newest first.
+# 2. Update the := to specify *max* version, e.g. < 10.
+# 3. Specify LLVM_MAX_SLOT, e.g. 9.
+LLVM_MAX_SLOT="10"
+LLVM_DEPSTR="
+	|| (
+		sys-devel/llvm:10[${MULTILIB_USEDEP}]
+		sys-devel/llvm:9[${MULTILIB_USEDEP}]
+	)
+	<sys-devel/llvm-$((LLVM_MAX_SLOT + 1)):=[${MULTILIB_USEDEP}]
+"
+LLVM_DEPSTR_AMDGPU=${LLVM_DEPSTR//]/,llvm_targets_AMDGPU(-)]}
+CLANG_DEPSTR=${LLVM_DEPSTR//llvm/clang}
+CLANG_DEPSTR_AMDGPU=${CLANG_DEPSTR//]/,llvm_targets_AMDGPU(-)]}
+RDEPEND="${RDEPEND}
+	gallium? (
+		llvm? (
+			opencl? (
+				video_cards_r600? (
+					${CLANG_DEPSTR_AMDGPU}
+				)
+				!video_cards_r600? (
+					video_cards_radeonsi? (
+						${CLANG_DEPSTR_AMDGPU}
+					)
+				)
+				!video_cards_r600? (
+					!video_cards_radeonsi? (
+						video_cards_radeon? (
+							${CLANG_DEPSTR_AMDGPU}
+						)
+					)
+				)
+				!video_cards_r600? (
+					!video_cards_radeon? (
+						!video_cards_radeonsi? (
+							${CLANG_DEPSTR}
+						)
+					)
+				)
+			)
+			!opencl? (
+				video_cards_r600? (
+					${LLVM_DEPSTR_AMDGPU}
+				)
+				!video_cards_r600? (
+					video_cards_radeonsi? (
+						${LLVM_DEPSTR_AMDGPU}
+					)
+				)
+				!video_cards_r600? (
+					!video_cards_radeonsi? (
+						video_cards_radeon? (
+							${LLVM_DEPSTR_AMDGPU}
+						)
+					)
+				)
+				!video_cards_r600? (
+					!video_cards_radeon? (
+						!video_cards_radeonsi? (
+							${LLVM_DEPSTR}
+						)
+					)
+				)
+			)
+		)
+	)
+"
+unset {LLVM,CLANG}_DEPSTR{,_AMDGPU}
+
+DEPEND="${RDEPEND}
+	valgrind? ( dev-util/valgrind )
+	X? (
+		x11-libs/libXrandr[${MULTILIB_USEDEP}]
+		x11-base/xorg-proto
+	)
+"
+BDEPEND="
+	${PYTHON_DEPS}
+	opencl? (
+		>=sys-devel/gcc-4.6
+	)
+	sys-devel/bison
+	sys-devel/flex
+	sys-devel/gettext
+	virtual/pkgconfig
+	$(python_gen_any_dep ">=dev-python/mako-0.8.0[\${PYTHON_USEDEP}]")
+"
+
+S="${WORKDIR}/${MY_P}"
+EGIT_CHECKOUT_DIR=${S}
+
+QA_WX_LOAD="
+x86? (
+	usr/lib*/libglapi.so.0.0.0
+	usr/lib*/libGLESv1_CM.so.1.1.0
+	usr/lib*/libGLESv2.so.2.0.0
+	usr/lib*/libGL.so.1.2.0
+	usr/lib*/libOSMesa.so.8.0.0
+	libglvnd? ( usr/lib/libGLX_mesa.so.0.0.0 )
+)"
+
+llvm_check_deps() {
+	local flags=${MULTILIB_USEDEP}
+	if use video_cards_r600 || use video_cards_radeon || use video_cards_radeonsi
+	then
+		flags+=",llvm_targets_AMDGPU(-)"
+	fi
+
+	if use opencl; then
+		has_version "sys-devel/clang:${LLVM_SLOT}[${flags}]" || return 1
+	fi
+	has_version "sys-devel/llvm:${LLVM_SLOT}[${flags}]"
+}
+
+pkg_pretend() {
+	if use vulkan; then
+		if ! use video_cards_i965 &&
+		   ! use video_cards_iris &&
+		   ! use video_cards_radeonsi; then
+			ewarn "Ignoring USE=vulkan     since VIDEO_CARDS does not contain i965, iris, or radeonsi"
+		fi
+	fi
+
+	if use opencl; then
+		if ! use video_cards_r600 &&
+		   ! use video_cards_radeonsi; then
+			ewarn "Ignoring USE=opencl     since VIDEO_CARDS does not contain r600 or radeonsi"
+		fi
+	fi
+
+	if use vaapi; then
+		if ! use video_cards_r600 &&
+		   ! use video_cards_radeonsi &&
+		   ! use video_cards_nouveau; then
+			ewarn "Ignoring USE=vaapi      since VIDEO_CARDS does not contain r600, radeonsi, or nouveau"
+		fi
+	fi
+
+	if use vdpau; then
+		if ! use video_cards_r300 &&
+		   ! use video_cards_r600 &&
+		   ! use video_cards_radeonsi &&
+		   ! use video_cards_nouveau; then
+			ewarn "Ignoring USE=vdpau      since VIDEO_CARDS does not contain r300, r600, radeonsi, or nouveau"
+		fi
+	fi
+
+	if use xa; then
+		if ! use video_cards_freedreno &&
+		   ! use video_cards_nouveau &&
+		   ! use video_cards_vmware; then
+			ewarn "Ignoring USE=xa         since VIDEO_CARDS does not contain freedreno, nouveau, or vmware"
+		fi
+	fi
+
+	if use xvmc; then
+		if ! use video_cards_r600 &&
+		   ! use video_cards_nouveau; then
+			ewarn "Ignoring USE=xvmc       since VIDEO_CARDS does not contain r600 or nouveau"
+		fi
+	fi
+
+	if ! use gallium; then
+		use lm-sensors && ewarn "Ignoring USE=lm-sensors since USE does not contain gallium"
+		use llvm       && ewarn "Ignoring USE=llvm       since USE does not contain gallium"
+		use opencl     && ewarn "Ignoring USE=opencl     since USE does not contain gallium"
+		use vaapi      && ewarn "Ignoring USE=vaapi      since USE does not contain gallium"
+		use vdpau      && ewarn "Ignoring USE=vdpau      since USE does not contain gallium"
+		use unwind     && ewarn "Ignoring USE=unwind     since USE does not contain gallium"
+		use xa         && ewarn "Ignoring USE=xa         since USE does not contain gallium"
+		use xvmc       && ewarn "Ignoring USE=xvmc       since USE does not contain gallium"
+	fi
+
+	if ! use llvm; then
+		use opencl     && ewarn "Ignoring USE=opencl     since USE does not contain llvm"
+	fi
+}
+
+python_check_deps() {
+	has_version -b ">=dev-python/mako-0.8.0[${PYTHON_USEDEP}]"
+}
+
+pkg_setup() {
+	# warning message for bug 459306
+	if use llvm && has_version sys-devel/llvm[!debug=]; then
+		ewarn "Mismatch between debug USE flags in media-libs/mesa and sys-devel/llvm"
+		ewarn "detected! This can cause problems. For details, see bug 459306."
+	fi
+
+	if use video_cards_i965 ||
+	   use video_cards_iris ||
+	   use video_cards_radeonsi; then
+		CONFIG_CHECK="~CHECKPOINT_RESTORE"
+		linux-info_pkg_setup
+	fi
+
+	if use gallium && use llvm; then
+		llvm_pkg_setup
+	fi
+	python-any-r1_pkg_setup
+}
+
+multilib_src_configure() {
+	local emesonargs=()
+
+	if use classic; then
+		# Intel code
+		dri_driver_enable video_cards_i915 i915
+		dri_driver_enable video_cards_i965 i965
+		if ! use video_cards_i915 && \
+			! use video_cards_i965; then
+			dri_driver_enable video_cards_intel i915 i965
+		fi
+
+		# Nouveau code
+		dri_driver_enable video_cards_nouveau nouveau
+
+		# ATI code
+		dri_driver_enable video_cards_r100 r100
+		dri_driver_enable video_cards_r200 r200
+		if ! use video_cards_r100 && \
+			! use video_cards_r200; then
+			dri_driver_enable video_cards_radeon r100 r200
+		fi
+	fi
+
+	emesonargs+=( -Dplatforms=$(use X && echo "x11,")$(use wayland && echo "wayland,")$(use gbm && echo "drm,")surfaceless )
+
+	if use gallium; then
+		emesonargs+=(
+			$(meson_use llvm)
+			$(meson_use lm-sensors lmsensors)
+			$(meson_use unwind libunwind)
+		)
+
+		if use video_cards_iris ||
+		   use video_cards_r300 ||
+		   use video_cards_r600 ||
+		   use video_cards_radeonsi ||
+		   use video_cards_nouveau ||
+		   use video_cards_vmware; then
+			emesonargs+=($(meson_use d3d9 gallium-nine))
+		else
+			emesonargs+=(-Dgallium-nine=false)
+		fi
+
+		if use video_cards_r600 ||
+		   use video_cards_radeonsi ||
+		   use video_cards_nouveau; then
+			emesonargs+=($(meson_use vaapi gallium-va))
+			use vaapi && emesonargs+=( -Dva-libs-path="${EPREFIX}"/usr/$(get_libdir)/va/drivers )
+		else
+			emesonargs+=(-Dgallium-va=false)
+		fi
+
+		if use video_cards_r300 ||
+		   use video_cards_r600 ||
+		   use video_cards_radeonsi ||
+		   use video_cards_nouveau; then
+			emesonargs+=($(meson_use vdpau gallium-vdpau))
+		else
+			emesonargs+=(-Dgallium-vdpau=false)
+		fi
+
+		if use video_cards_freedreno ||
+		   use video_cards_nouveau ||
+		   use video_cards_vmware; then
+			emesonargs+=($(meson_use xa gallium-xa))
+		else
+			emesonargs+=(-Dgallium-xa=false)
+		fi
+
+		if use video_cards_r600 ||
+		   use video_cards_nouveau; then
+			emesonargs+=($(meson_use xvmc gallium-xvmc))
+		else
+			emesonargs+=(-Dgallium-xvmc=false)
+		fi
+
+		if use video_cards_freedreno ||
+		   use video_cards_lima ||
+		   use video_cards_panfrost ||
+		   use video_cards_vc4 ||
+		   use video_cards_vivante; then
+			gallium_enable -- kmsro
+		fi
+
+		gallium_enable video_cards_lima lima
+		gallium_enable video_cards_panfrost panfrost
+		gallium_enable video_cards_vc4 vc4
+		gallium_enable video_cards_vivante etnaviv
+		gallium_enable video_cards_vmware svga
+		gallium_enable video_cards_nouveau nouveau
+
+		# Only one i915 driver (classic vs gallium). Default to classic.
+		if ! use classic; then
+			gallium_enable video_cards_i915 i915
+			if ! use video_cards_i915 && \
+				! use video_cards_i965; then
+				gallium_enable video_cards_intel i915
+			fi
+		fi
+
+		gallium_enable video_cards_iris iris
+
+		gallium_enable video_cards_r300 r300
+		gallium_enable video_cards_r600 r600
+		gallium_enable video_cards_radeonsi radeonsi
+		if ! use video_cards_r300 && \
+			! use video_cards_r600; then
+			gallium_enable video_cards_radeon r300 r600
+		fi
+
+		gallium_enable video_cards_freedreno freedreno
+		gallium_enable video_cards_virgl virgl
+
+		# opencl stuff
+		emesonargs+=(
+			-Dgallium-opencl="$(usex opencl icd disabled)"
+		)
+	fi
+
+	if use vulkan; then
+		vulkan_enable video_cards_i965 intel
+		vulkan_enable video_cards_iris intel
+		vulkan_enable video_cards_radeonsi amd
+	fi
+
+	if use gallium; then
+		gallium_enable -- swrast
+		emesonargs+=( -Dosmesa=$(usex osmesa gallium none) )
+	else
+		dri_driver_enable -- swrast
+		emesonargs+=( -Dosmesa=$(usex osmesa classic none) )
+	fi
+
+	driver_list() {
+		local drivers="$(sort -u <<< "${1// /$'\n'}")"
+		echo "${drivers//$'\n'/,}"
+	}
+
+	emesonargs+=(
+		$(meson_use test build-tests)
+		-Dglx=$(usex X dri disabled)
+		-Dshared-glapi=true
+		$(meson_use dri3)
+		$(meson_use egl)
+		$(meson_use gbm)
+		$(meson_use gles1)
+		$(meson_use gles2)
+		$(meson_use libglvnd glvnd)
+		$(meson_use selinux)
+		$(meson_use zstd)
+		-Dvalgrind=$(usex valgrind auto false)
+		-Ddri-drivers=$(driver_list "${DRI_DRIVERS[*]}")
+		-Dgallium-drivers=$(driver_list "${GALLIUM_DRIVERS[*]}")
+		-Dvulkan-drivers=$(driver_list "${VULKAN_DRIVERS[*]}")
+		$(meson_use vulkan vulkan-device-select-layer)
+		$(meson_use vulkan-overlay vulkan-overlay-layer)
+		--buildtype $(usex debug debug plain)
+		-Db_ndebug=$(usex debug false true)
+	)
+	meson_src_configure
+}
+
+multilib_src_compile() {
+	meson_src_compile
+}
+
+multilib_src_install() {
+	meson_src_install
+}
+
+multilib_src_install_all() {
+	einstalldocs
+}
+
+multilib_src_test() {
+	meson test -v -C "${BUILD_DIR}" -t 100
+}
+
+pkg_postinst() {
+	if ! use libglvnd; then
+		# Switch to the xorg implementation.
+		echo
+		eselect opengl set --use-old ${OPENGL_DIR}
+	fi
+}
+
+# $1 - VIDEO_CARDS flag (check skipped for "--")
+# other args - names of DRI drivers to enable
+dri_driver_enable() {
+	if [[ $1 == -- ]] || use $1; then
+		shift
+		DRI_DRIVERS+=("$@")
+	fi
+}
+
+gallium_enable() {
+	if [[ $1 == -- ]] || use $1; then
+		shift
+		GALLIUM_DRIVERS+=("$@")
+	fi
+}
+
+vulkan_enable() {
+	if [[ $1 == -- ]] || use $1; then
+		shift
+		VULKAN_DRIVERS+=("$@")
+	fi
+}