diff --git a/media-libs/mesa/Manifest b/media-libs/mesa/Manifest
index a2e2eec18809c..ff1abc07e6516 100644
--- a/media-libs/mesa/Manifest
+++ b/media-libs/mesa/Manifest
@@ -4,3 +4,4 @@ DIST mesa-18.1.1.tar.xz 11110892 BLAKE2B 05d48379109c1c3800d3d07b9f52e96b2cd4bc0
 DIST mesa-18.1.2.tar.xz 11124408 BLAKE2B 8327f16f41d59e6ec8d4145a8399503cf04799d437e336714760e4bdc563c483583363e32d41affc2365e977b96494156300910b1834bc9957504b6c0cf168fa SHA512 1b896ecc42c2f81813d551a2b14d271d274a948fa10bf5b7a567417690316c2ab7e7fdd52fe004732cd1a47661ba91acf7d5b21e3b3f28e21b50aadbfa96a5d5
 DIST mesa-18.1.3.tar.xz 11126236 BLAKE2B 2315cdc95130ef604a86e3886abf9b15e6c7944fab3b3cc020358dd08a76f2b876904516e5c081d549b16240ae4dedd647402dd7bd8de4c91015bb601c0c2923 SHA512 f6e5b81a80a309a36a04759d18364d3c71c48d1cb88f87b2f5432ef003092a22046e88ce2082031d5d52b60ba36f585d8df52e06ecc7a5158079936236f36887
 DIST mesa-18.1.4.tar.xz 11133392 BLAKE2B b0c205e5baa04bb018333ffd89942f86f19edd3f610cce004db23bad4ebc1a3379ea35e72c85ccc08c34c8bc0991c1f0b595227fae2259e4b76895542d3f25b9 SHA512 04b8e5bbfa640f2303c388ab701fc2aca7f6d5d127ca5a9f9409975556813ba8e94305d27c9cea236a0e6d44a38b97e2877509268a96d9ed2a6762ab385aa3dc
+DIST mesa-18.1.5.tar.xz 11137340 BLAKE2B 3c18d2d73aa7ee920344691bd6de68b27b5cfb37e707921e04e3989596f3e5a088ac7171b033bb61473627cc1a5bf11d24a1f28d8483164b855f8023a74497e1 SHA512 f0bcb903bbf2ff7fc0b4a8fe100ea26ee91c0029b64adaf5fc4877ed7681f325c54b1be8eb0b140bff620da79f30a96375c2e1085e504ebfaf50e57f6da93013
diff --git a/media-libs/mesa/mesa-18.1.5.ebuild b/media-libs/mesa/mesa-18.1.5.ebuild
new file mode 100644
index 0000000000000..fab799310391e
--- /dev/null
+++ b/media-libs/mesa/mesa-18.1.5.ebuild
@@ -0,0 +1,540 @@
+# Copyright 1999-2018 Gentoo Foundation
+# Distributed under the terms of the GNU General Public License v2
+
+EAPI=6
+
+EGIT_REPO_URI="https://gitlab.freedesktop.org/mesa/mesa.git"
+
+if [[ ${PV} = 9999 ]]; then
+	GIT_ECLASS="git-r3"
+	EXPERIMENTAL="true"
+fi
+
+PYTHON_COMPAT=( python2_7 )
+
+inherit autotools llvm multilib-minimal python-any-r1 pax-utils ${GIT_ECLASS}
+
+OPENGL_DIR="xorg-x11"
+
+MY_P="${P/_/-}"
+
+DESCRIPTION="OpenGL-like graphic library for Linux"
+HOMEPAGE="https://www.mesa3d.org/ https://mesa.freedesktop.org/"
+
+if [[ $PV == 9999 ]]; then
+	SRC_URI=""
+else
+	SRC_URI="https://mesa.freedesktop.org/archive/${MY_P}.tar.xz"
+	KEYWORDS="~alpha ~amd64 ~arm ~arm64 ~hppa ~ia64 ~mips ~ppc ~ppc64 ~s390 ~sh ~sparc ~x86 ~amd64-fbsd ~x86-fbsd ~amd64-linux ~arm-linux ~x86-linux ~sparc-solaris ~x64-solaris ~x86-solaris"
+fi
+
+LICENSE="MIT"
+SLOT="0"
+RESTRICT="!bindist? ( bindist )"
+
+RADEON_CARDS="r100 r200 r300 r600 radeon radeonsi"
+VIDEO_CARDS="${RADEON_CARDS} freedreno i915 i965 imx intel nouveau vc4 virgl vivante vmware"
+for card in ${VIDEO_CARDS}; do
+	IUSE_VIDEO_CARDS+=" video_cards_${card}"
+done
+
+IUSE="${IUSE_VIDEO_CARDS}
+	bindist +classic d3d9 debug +dri3 +egl +gallium +gbm gles1 gles2 unwind
+	+llvm +nptl opencl osmesa pax_kernel openmax pic selinux vaapi valgrind
+	vdpau vulkan wayland xvmc xa"
+
+REQUIRED_USE="
+	d3d9?   ( dri3 gallium )
+	llvm?   ( gallium )
+	opencl? ( gallium llvm || ( video_cards_r600 video_cards_radeonsi ) )
+	openmax? ( gallium )
+	gles1?  ( egl )
+	gles2?  ( egl )
+	vaapi? ( gallium )
+	vdpau? ( gallium )
+	vulkan? ( || ( video_cards_i965 video_cards_radeonsi )
+			  video_cards_radeonsi? ( llvm ) )
+	wayland? ( egl gbm )
+	xa?  ( gallium )
+	video_cards_freedreno?  ( gallium )
+	video_cards_intel?  ( classic )
+	video_cards_i915?   ( || ( classic gallium ) )
+	video_cards_i965?   ( classic )
+	video_cards_imx?    ( gallium video_cards_vivante )
+	video_cards_nouveau? ( || ( classic gallium ) )
+	video_cards_radeon? ( || ( classic gallium )
+						  gallium? ( x86? ( llvm ) amd64? ( llvm ) ) )
+	video_cards_r100?   ( classic )
+	video_cards_r200?   ( classic )
+	video_cards_r300?   ( gallium x86? ( llvm ) amd64? ( llvm ) )
+	video_cards_r600?   ( gallium )
+	video_cards_radeonsi?   ( gallium llvm )
+	video_cards_vc4? ( gallium )
+	video_cards_virgl? ( gallium )
+	video_cards_vivante? ( gallium gbm )
+	video_cards_vmware? ( gallium )
+"
+
+LIBDRM_DEPSTRING=">=x11-libs/libdrm-2.4.91"
+RDEPEND="
+	!app-eselect/eselect-mesa
+	>=app-eselect/eselect-opengl-1.3.0
+	>=dev-libs/expat-2.1.0-r3:=[${MULTILIB_USEDEP}]
+	>=sys-libs/zlib-1.2.8[${MULTILIB_USEDEP}]
+	>=x11-libs/libX11-1.6.2:=[${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}]
+	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}]
+		)
+	)
+	opencl? (
+				app-eselect/eselect-opencl
+				dev-libs/libclc
+				virtual/libelf:0=[${MULTILIB_USEDEP}]
+			)
+	openmax? (
+		>=media-libs/libomxil-bellagio-0.9.3:=[${MULTILIB_USEDEP}]
+		x11-misc/xdg-utils
+	)
+	vaapi? (
+		>=x11-libs/libva-1.7.3:=[${MULTILIB_USEDEP}]
+		video_cards_nouveau? ( !<=x11-libs/libva-vdpau-driver-0.7.4-r3 )
+	)
+	vdpau? ( >=x11-libs/libvdpau-1.1:=[${MULTILIB_USEDEP}] )
+	wayland? (
+		>=dev-libs/wayland-1.15.0:=[${MULTILIB_USEDEP}]
+		>=dev-libs/wayland-protocols-1.8
+	)
+	xvmc? ( >=x11-libs/libXvMC-1.0.8:=[${MULTILIB_USEDEP}] )
+	${LIBDRM_DEPSTRING}[video_cards_freedreno?,video_cards_nouveau?,video_cards_vc4?,video_cards_vivante?,video_cards_vmware?,${MULTILIB_USEDEP}]
+
+	video_cards_intel? (
+		!video_cards_i965? ( ${LIBDRM_DEPSTRING}[video_cards_intel] )
+	)
+	video_cards_i915? ( ${LIBDRM_DEPSTRING}[video_cards_intel] )
+"
+for card in ${RADEON_CARDS}; do
+	RDEPEND="${RDEPEND}
+		video_cards_${card}? ( ${LIBDRM_DEPSTRING}[video_cards_radeon] )
+	"
+done
+RDEPEND="${RDEPEND}
+	video_cards_radeonsi? ( ${LIBDRM_DEPSTRING}[video_cards_amdgpu] )
+"
+
+# Please keep the LLVM dependency block separate. Since LLVM is slotted,
+# we need to *really* make sure we're not pulling one than more slot
+# simultaneously.
+#
+# How to use it:
+# 1. List all the working slots (with min versions) in ||, newest first.
+# 2. Update the := to specify *max* version, e.g. < 7.
+# 3. Specify LLVM_MAX_SLOT, e.g. 6.
+LLVM_MAX_SLOT="6"
+LLVM_DEPSTR="
+	|| (
+		sys-devel/llvm:7[${MULTILIB_USEDEP}]
+		sys-devel/llvm:6[${MULTILIB_USEDEP}]
+		sys-devel/llvm:5[${MULTILIB_USEDEP}]
+		sys-devel/llvm:4[${MULTILIB_USEDEP}]
+		>=sys-devel/llvm-3.9.0:0[${MULTILIB_USEDEP}]
+	)
+	sys-devel/llvm:=[${MULTILIB_USEDEP}]
+"
+LLVM_DEPSTR_AMDGPU=${LLVM_DEPSTR//]/,llvm_targets_AMDGPU(-)]}
+CLANG_DEPSTR=${LLVM_DEPSTR//llvm/clang}
+CLANG_DEPSTR_AMDGPU=${CLANG_DEPSTR//]/,llvm_targets_AMDGPU(-)]}
+RDEPEND="${RDEPEND}
+	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}
+	${PYTHON_DEPS}
+	opencl? (
+		>=sys-devel/gcc-4.6
+	)
+	sys-devel/gettext
+	virtual/pkgconfig
+	valgrind? ( dev-util/valgrind )
+	x11-base/xorg-proto
+	vulkan? (
+		$(python_gen_any_dep ">=dev-python/mako-0.7.3[\${PYTHON_USEDEP}]")
+	)
+"
+[[ ${PV} == 9999 ]] && DEPEND+="
+	sys-devel/bison
+	sys-devel/flex
+	$(python_gen_any_dep ">=dev-python/mako-0.7.3[\${PYTHON_USEDEP}]")
+"
+
+S="${WORKDIR}/${MY_P}"
+EGIT_CHECKOUT_DIR=${S}
+
+QA_WX_LOAD="
+x86? (
+	!pic? (
+		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
+	)
+)"
+
+llvm_check_deps() {
+	local flags=${MULTILIB_USEDEP}
+	if use video_cards_r600 || use video_cards_radeon || use video_cards_radeonsi
+	then
+		flags+=",llvm_targets_AMDGPU(-)"
+	fi
+
+	if use opencl; then
+		has_version "sys-devel/clang[${flags}]" || return 1
+	fi
+	has_version "sys-devel/llvm[${flags}]"
+}
+
+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 llvm; then
+		llvm_pkg_setup
+	fi
+	python-any-r1_pkg_setup
+}
+
+src_prepare() {
+	eapply_user
+	[[ ${PV} == 9999 ]] && eautoreconf
+}
+
+multilib_src_configure() {
+	local myconf
+
+	if use classic; then
+		# Configurable DRI drivers
+		driver_enable swrast
+
+		# Intel code
+		driver_enable video_cards_i915 i915
+		driver_enable video_cards_i965 i965
+		if ! use video_cards_i915 && \
+			! use video_cards_i965; then
+			driver_enable video_cards_intel i915 i965
+		fi
+
+		# Nouveau code
+		driver_enable video_cards_nouveau nouveau
+
+		# ATI code
+		driver_enable video_cards_r100 radeon
+		driver_enable video_cards_r200 r200
+		if ! use video_cards_r100 && \
+				! use video_cards_r200; then
+			driver_enable video_cards_radeon radeon r200
+		fi
+	fi
+
+	if use egl; then
+		myconf+=" --with-platforms=x11,surfaceless$(use wayland && echo ",wayland")$(use gbm && echo ",drm")"
+	fi
+
+	if use gallium; then
+		myconf+="
+			$(use_enable d3d9 nine)
+			$(use_enable llvm)
+			$(use_enable openmax omx-bellagio)
+			$(use_enable vaapi va)
+			$(use_enable vdpau)
+			$(use_enable xa)
+			$(use_enable xvmc)
+		"
+		use vaapi && myconf+=" --with-va-libdir=/usr/$(get_libdir)/va/drivers"
+
+		gallium_enable swrast
+		gallium_enable video_cards_vc4 vc4
+		gallium_enable video_cards_vivante etnaviv
+		gallium_enable video_cards_vmware svga
+		gallium_enable video_cards_nouveau nouveau
+		gallium_enable video_cards_i915 i915
+		gallium_enable video_cards_imx imx
+		if ! use video_cards_i915 && \
+			! use video_cards_i965; then
+			gallium_enable video_cards_intel i915
+		fi
+
+		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
+		# opencl stuff
+		if use opencl; then
+			myconf+="
+				$(use_enable opencl)
+				--with-clang-libdir="${EPREFIX}/usr/lib"
+				"
+		fi
+
+		gallium_enable video_cards_virgl virgl
+	fi
+
+	if use vulkan; then
+		vulkan_enable video_cards_i965 intel
+		vulkan_enable video_cards_radeonsi radeon
+	fi
+
+	# x86 hardened pax_kernel needs glx-rts, bug 240956
+	if [[ ${ABI} == x86 ]]; then
+		myconf+=" $(use_enable pax_kernel glx-read-only-text)"
+	fi
+
+	# on abi_x86_32 hardened we need to have asm disable
+	if [[ ${ABI} == x86* ]] && use pic; then
+		myconf+=" --disable-asm"
+	fi
+
+	if use gallium; then
+		myconf+=" $(use_enable osmesa gallium-osmesa)"
+	else
+		myconf+=" $(use_enable osmesa)"
+	fi
+
+	# build fails with BSD indent, bug #428112
+	use userland_GNU || export INDENT=cat
+
+	ECONF_SOURCE="${S}" \
+	econf \
+		--enable-dri \
+		--enable-glx \
+		--enable-shared-glapi \
+		$(use_enable !bindist texture-float) \
+		$(use_enable d3d9 nine) \
+		$(use_enable debug) \
+		$(use_enable dri3) \
+		$(use_enable egl) \
+		$(use_enable gbm) \
+		$(use_enable gles1) \
+		$(use_enable gles2) \
+		$(use_enable nptl glx-tls) \
+		$(use_enable unwind libunwind) \
+		--enable-valgrind=$(usex valgrind auto no) \
+		--enable-llvm-shared-libs \
+		--disable-opencl-icd \
+		--with-dri-drivers=${DRI_DRIVERS} \
+		--with-gallium-drivers=${GALLIUM_DRIVERS} \
+		--with-vulkan-drivers=${VULKAN_DRIVERS} \
+		PYTHON2="${PYTHON}" \
+		${myconf}
+}
+
+multilib_src_install() {
+	emake install DESTDIR="${D}"
+
+	if use wayland; then
+		# These files are now provided by >=dev-libs/wayland-1.15.0
+		rm "${ED}/usr/$(get_libdir)/libwayland-egl.so" || die
+		rm "${ED}/usr/$(get_libdir)/libwayland-egl.so.1" || die
+		rm "${ED}/usr/$(get_libdir)/libwayland-egl.so.1.0.0" || die
+		rm "${ED}/usr/$(get_libdir)/pkgconfig/wayland-egl.pc" || die
+	fi
+
+	if use opencl; then
+		ebegin "Moving Gallium/Clover OpenCL implementation for dynamic switching"
+		local cl_dir="/usr/$(get_libdir)/OpenCL/vendors/mesa"
+		dodir ${cl_dir}/{lib,include}
+		if [ -f "${ED}/usr/$(get_libdir)/libOpenCL.so" ]; then
+			mv -f "${ED}"/usr/$(get_libdir)/libOpenCL.so* \
+			"${ED}"${cl_dir}
+		fi
+		if [ -f "${ED}/usr/include/CL/opencl.h" ]; then
+			mv -f "${ED}"/usr/include/CL \
+			"${ED}"${cl_dir}/include
+		fi
+		eend $?
+	fi
+
+	if use openmax; then
+		echo "XDG_DATA_DIRS=\"${EPREFIX}/usr/share/mesa/xdg\"" > "${T}/99mesaxdgomx"
+		doenvd "${T}"/99mesaxdgomx
+		keepdir /usr/share/mesa/xdg
+	fi
+}
+
+multilib_src_install_all() {
+	find "${ED}" -name '*.la' -delete
+	einstalldocs
+
+	if use !bindist; then
+		dodoc docs/patents.txt
+	fi
+}
+
+multilib_src_test() {
+	if use llvm; then
+		local llvm_tests='lp_test_arit lp_test_arit lp_test_blend lp_test_blend lp_test_conv lp_test_conv lp_test_format lp_test_format lp_test_printf lp_test_printf'
+		pushd src/gallium/drivers/llvmpipe >/dev/null || die
+		emake ${llvm_tests}
+		pax-mark m ${llvm_tests}
+		popd >/dev/null || die
+	fi
+	emake check
+}
+
+pkg_postinst() {
+	# Switch to the xorg implementation.
+	echo
+	eselect opengl set --use-old ${OPENGL_DIR}
+
+	# Switch to mesa opencl
+	if use opencl; then
+		eselect opencl set --use-old ${PN}
+	fi
+
+	# run omxregister-bellagio to make the OpenMAX drivers known system-wide
+	if use openmax; then
+		ebegin "Registering OpenMAX drivers"
+		BELLAGIO_SEARCH_PATH="${EPREFIX}/usr/$(get_libdir)/libomxil-bellagio0" \
+			OMX_BELLAGIO_REGISTRY=${EPREFIX}/usr/share/mesa/xdg/.omxregister \
+			omxregister-bellagio
+		eend $?
+	fi
+
+	# warn about patent encumbered texture-float
+	if use !bindist; then
+		elog "USE=\"bindist\" was not set. Potentially patent encumbered code was"
+		elog "enabled. Please see /usr/share/doc/${P}/patents.txt.bz2 for an"
+		elog "explanation."
+	fi
+}
+
+pkg_prerm() {
+	if use openmax; then
+		rm "${EPREFIX}"/usr/share/mesa/xdg/.omxregister
+	fi
+}
+
+# $1 - VIDEO_CARDS flag
+# other args - names of DRI drivers to enable
+# TODO: avoid code duplication for a more elegant implementation
+driver_enable() {
+	case $# in
+		# for enabling unconditionally
+		1)
+			DRI_DRIVERS+=",$1"
+			;;
+		*)
+			if use $1; then
+				shift
+				for i in $@; do
+					DRI_DRIVERS+=",${i}"
+				done
+			fi
+			;;
+	esac
+}
+
+gallium_enable() {
+	case $# in
+		# for enabling unconditionally
+		1)
+			GALLIUM_DRIVERS+=",$1"
+			;;
+		*)
+			if use $1; then
+				shift
+				for i in $@; do
+					GALLIUM_DRIVERS+=",${i}"
+				done
+			fi
+			;;
+	esac
+}
+
+vulkan_enable() {
+	case $# in
+		# for enabling unconditionally
+		1)
+			VULKAN_DRIVERS+=",$1"
+			;;
+		*)
+			if use $1; then
+				shift
+				for i in $@; do
+					VULKAN_DRIVERS+=",${i}"
+				done
+			fi
+			;;
+	esac
+}