--- /dev/null
+# Copyright 1999-2020 Gentoo Authors
+# Distributed under the terms of the GNU General Public License v2
+
+EAPI=7
+PYTHON_COMPAT=( python3_{6,7} )
+
+if [[ "${PV}" == "9999" ]]; then
+ EGIT_REPO_URI="https://github.com/KhronosGroup/Vulkan-Loader.git"
+ EGIT_SUBMODULES=()
+ inherit git-r3
+else
+ if [[ -z ${SNAPSHOT_COMMIT} ]]; then
+ MY_PV=v${PV}
+ MY_P=Vulkan-Loader-${PV}
+ else
+ MY_PV=${SNAPSHOT_COMMIT}
+ MY_P=Vulkan-Loader-${SNAPSHOT_COMMIT}
+ fi
+ KEYWORDS="~amd64 ~ppc64 ~x86"
+ SRC_URI="https://github.com/KhronosGroup/Vulkan-Loader/archive/${MY_PV}.tar.gz -> ${P}.tar.gz"
+ S="${WORKDIR}"/${MY_P}
+fi
+
+inherit toolchain-funcs python-any-r1 cmake-multilib
+
+DESCRIPTION="Vulkan Installable Client Driver (ICD) Loader"
+HOMEPAGE="https://github.com/KhronosGroup/Vulkan-Loader"
+
+LICENSE="Apache-2.0"
+SLOT="0"
+IUSE="layers wayland X"
+
+PDEPEND="layers? ( media-libs/vulkan-layers:=[${MULTILIB_USEDEP}] )"
+DEPEND="${PYTHON_DEPS}
+ ~dev-util/vulkan-headers-${PV}
+ wayland? ( dev-libs/wayland:=[${MULTILIB_USEDEP}] )
+ X? (
+ x11-libs/libX11:=[${MULTILIB_USEDEP}]
+ x11-libs/libXrandr:=[${MULTILIB_USEDEP}]
+ )"
+
+multilib_src_configure() {
+ # Integrated clang assembler doesn't work with x86 - Bug #698164
+ if tc-is-clang && [[ ${ABI} == x86 ]]; then
+ append-cflags -fno-integrated-as
+ fi
+
+ local mycmakeargs=(
+ -DCMAKE_SKIP_RPATH=True
+ -DBUILD_TESTS=False
+ -DBUILD_LOADER=True
+ -DBUILD_WSI_WAYLAND_SUPPORT=$(usex wayland)
+ -DBUILD_WSI_XCB_SUPPORT=$(usex X)
+ -DBUILD_WSI_XLIB_SUPPORT=$(usex X)
+ -DVULKAN_HEADERS_INSTALL_DIR="${EPREFIX}/usr"
+ )
+ cmake-utils_src_configure
+}
+
+multilib_src_install() {
+ keepdir /etc/vulkan/icd.d
+
+ cmake-utils_src_install
+}
+
+pkg_postinst() {
+ einfo "USE=demos has been dropped as per upstream packaging"
+ einfo "vulkaninfo is now available in the dev-util/vulkan-tools package"
+}