# Maintainer: Natanael Copa <ncopa@alpinelinux.org>
pkgname=mesa
pkgver=24.0.5
pkgrel=0
pkgdesc="Mesa DRI OpenGL library"
url="https://www.mesa3d.org"
arch="all"
license="MIT AND SGI-B-2.0 AND BSL-1.0"
subpackages="
	$pkgname-dbg
	$pkgname-dev
	$pkgname-dri-gallium:_gallium
	$pkgname-va-gallium:_va
	$pkgname-vdpau-gallium:_vdpau
	$pkgname-glapi
	$pkgname-egl
	$pkgname-gl
	$pkgname-gles
	$pkgname-xatracker
	$pkgname-osmesa
	$pkgname-gbm
	$pkgname-vulkan-ati:_vulkan
	$pkgname-vulkan-swrast:_vulkan
	$pkgname-vulkan-layers:_vulkan_layers
	$pkgname-libd3dadapter9
	"
_llvmver=17
depends_dev="
	libdrm-dev
	libxext-dev
	libxdamage-dev
	libxcb-dev
	libxshmfence-dev
	"
makedepends="
	$depends_dev
	bison
	eudev-dev
	expat-dev
	findutils
	flex
	gettext
	elfutils-dev
	glslang-dev
	libtool
	libxfixes-dev
	libva-dev
	libvdpau-dev
	libx11-dev
	libxml2-dev
	libxrandr-dev
	libxxf86vm-dev
	llvm$_llvmver-dev
	meson
	py3-mako
	py3-packaging
	python3
	vulkan-loader-dev
	wayland-dev
	wayland-protocols
	xorgproto
	zlib-dev
	zstd-dev
	"
source="
	https://mesa.freedesktop.org/archive/mesa-${pkgver/_/-}.tar.xz
	enable-mali-t600.patch
	no-unlink-megadrivers.patch
	"
replaces="mesa-dricore"
options="!check" # we skip tests intentionally
builddir="$srcdir/mesa-${pkgver/_/-}"

_dri_driverdir=/usr/lib/xorg/modules/dri
_gallium_drivers="r300,r600,radeonsi,nouveau,swrast,virgl,zink"
_vulkan_drivers="amd,swrast"
_vulkan_layers="device-select,overlay"

# extra gallium per arch
case "$CARCH" in
x86*)
	_gallium_drivers="$_gallium_drivers,svga,i915,iris,crocus"
	;;
armhf|armv7|aarch64)
	_gallium_drivers="$_gallium_drivers,vc4,v3d,freedreno,kmsro,lima,panfrost,etnaviv,tegra"
	;;
esac

# extra vulkan per arch
case "$CARCH" in
x86*)
	_vulkan_drivers="$_vulkan_drivers,intel,intel_hasvk"
	_vulkan_layers="$_vulkan_layers,intel-nullhw"
	subpackages="
		$subpackages
		$pkgname-vulkan-intel:_vulkan
		"
	;;
aarch64)
	_vulkan_drivers="$_vulkan_drivers,broadcom,freedreno,panfrost"
	subpackages="
		$subpackages
		$pkgname-vulkan-broadcom:_vulkan
		$pkgname-vulkan-freedreno:_vulkan
		$pkgname-vulkan-panfrost:_vulkan
		"
	;;
esac

case "$CARCH" in
x86)
	# lto fails on x86 only
	# mostly:
	# https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/21371
	# https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/21180
	_lto=false
	;;
*)
	# ~5% smaller
	_lto=true
	;;
esac

case "$CARCH" in
aarch64|x86_64)
	_rusticl=true
	makedepends="
		$makedepends
		clang$_llvmver-dev
		libclc-dev~$_llvmver
		rust
		rust-bindgen
		spirv-llvm-translator-dev
		"
	subpackages="
		$subpackages
		$pkgname-rusticl
		"
	;;
*)
	_rusticl=false
	;;
esac

build() {
	# use -g1 to generate less debug info:
	# 485 MiB -> ~80 MiB
	export CFLAGS="$CFLAGS -O2 -g1"
	export CXXFLAGS="$CXXFLAGS -O2 -g1"
	export CPPFLAGS="$CPPFLAGS -O2 -g1"

	case "$CARCH" in
	armhf|armv7)
		# gnu2 tlsdesc is broken in binutils
		export CFLAGS="$CFLAGS -mtls-dialect=gnu"
		export CXXFLAGS="$CXXFLAGS -mtls-dialect=gnu"
		;;
	esac

	PATH="$PATH:/usr/lib/llvm$_llvmver/bin" \
	abuild-meson \
		-Db_ndebug=true \
		-Db_lto=$_lto \
		-Dbackend_max_links=2 \
		-Ddri-drivers-path=$_dri_driverdir \
		-Dgallium-drivers=$_gallium_drivers \
		-Dvulkan-drivers=$_vulkan_drivers \
		-Dvulkan-layers=$_vulkan_layers \
		-Dplatforms=x11,wayland \
		-Dllvm=enabled \
		-Dshared-llvm=enabled \
		-Dshared-glapi=enabled \
		-Dgbm=enabled \
		-Dglx=dri \
		-Dopengl=true \
		-Dosmesa=true \
		-Dgles1=enabled \
		-Dgles2=enabled \
		-Degl=enabled \
		-Dgallium-extra-hud=true \
		-Dgallium-nine=true \
		-Dgallium-rusticl=$_rusticl \
		-Dgallium-va=enabled \
		-Dgallium-vdpau=enabled \
		-Dgallium-xa=enabled \
		-Drust_std=2021 \
		-Dvideo-codecs=all \
		. output

	# Print config
	meson configure --no-pager output

	meson compile -C output
}

package() {
	provider_priority=100
	DESTDIR="$pkgdir" meson install --no-rebuild -C output
}

egl() {
	pkgdesc="Mesa libEGL runtime libraries"
	depends="mesa=$pkgver-r$pkgrel"
	provider_priority=100

	amove usr/lib/libEGL.so*
}

gl() {
	pkgdesc="Mesa libGL runtime libraries"
	depends="mesa=$pkgver-r$pkgrel"
	provider_priority=100

	amove usr/lib/libGL.so*
}

glapi() {
	pkgdesc="Mesa shared glapi"
	replaces="$pkgname-gles=$pkgver-r$pkgrel"
	provider_priority=100

	amove usr/lib/libglapi.so.*
}

gles() {
	pkgdesc="Mesa libGLESv2 runtime libraries"
	depends="mesa=$pkgver-r$pkgrel"
	provider_priority=100

	amove usr/lib/libGLES*.so*
}

xatracker() {
	pkgdesc="Mesa XA state tracker for vmware"
	depends="mesa=$pkgver-r$pkgrel"
	provider_priority=100

	amove usr/lib/libxatracker*.so.*
}

osmesa() {
	pkgdesc="Mesa offscreen rendering libraries"
	depends="mesa=$pkgver-r$pkgrel"
	provider_priority=100

	amove usr/lib/libOSMesa.so.*
}

gbm() {
	pkgdesc="Mesa gbm library"
	depends="mesa=$pkgver-r$pkgrel"
	provider_priority=100

	amove usr/lib/libgbm.so.*
}

libd3dadapter9() {
	pkgdesc="Mesa directx9 adapter"
	depends="mesa=$pkgver-r$pkgrel"
	provider_priority=100

	amove usr/lib/d3d/d3dadapter9.so*
}

rusticl() {
	pkgdesc="Mesa OpenCL driver"
	depends="mesa=$pkgver-r$pkgrel clang$_llvmver-headers libclc~$_llvmver"
	provider_priority=100

	amove usr/lib/libRusticlOpenCL.so.*
	amove etc/OpenCL/vendors/
}

# Move links referencing the same file to the subpackage.
# Usage: _mv_links <base directory> <example>
# where <example> is one of the libraries covered by the megadriver.
# The example is used to find other links that point to the same file.
_mv_links() {
	install -d "$subpkgdir"/$1
	find -L "$pkgdir"/$1 -samefile "$pkgdir"/$1/$2 -print0 \
		| xargs -0 -I{} mv {} "$subpkgdir"/$1/
}

_mv_vulkan() {
	local i
	for i in "$@"; do
		amove usr/lib/libvulkan_$i*.so
		amove usr/share/vulkan/icd.d/${i}_*.*
	done
}

# Mesa uses "megadrivers" where multiple drivers are linked into one shared
# library. This library is then hard-linked to separate files (one for each driver).
# Each subpackage contains one megadriver so that all the hard-links are preserved.

_gallium() {
	pkgdesc="Mesa gallium DRI drivers"
	depends="mesa=$pkgver-r$pkgrel"
	provider_priority=100

	# libgallium_dri.so
	_mv_links $_dri_driverdir swrast_dri.so
}

_va() {
	local n=${subpkgname##*-va-}
	pkgdesc="Mesa $n VAAPI drivers"
	depends="mesa=$pkgver-r$pkgrel libva"
	provider_priority=100

	case $n in
	gallium)
		# libgallium_drv_video.so
		_mv_links /usr/lib/dri radeonsi_drv_video.so ;;
	esac
}

_vdpau() {
	local n=${subpkgname##*-vdpau-}
	pkgdesc="Mesa $n VDPAU drivers"
	depends="mesa=$pkgver-r$pkgrel libvdpau"
	provider_priority=100

	case $n in
	gallium)
		# libvdpau_gallium.so.1.0.0
		_mv_links /usr/lib/vdpau libvdpau_radeonsi.so.1.0.0 ;;
	esac
}

_vulkan() {
	local n=${subpkgname##*-vulkan-}
	pkgdesc="Mesa Vulkan API driver for $n"
	depends="mesa=$pkgver-r$pkgrel"
	provider_priority=100

	case $n in
	ati)
		_mv_vulkan radeon ;;
	intel)
		_mv_vulkan intel ;;
	broadcom)
		_mv_vulkan broadcom ;;
	freedreno)
		_mv_vulkan freedreno ;;
	panfrost)
		_mv_vulkan panfrost ;;
	swrast)
		_mv_vulkan lvp ;;
	esac
}

_vulkan_layers() {
	pkgdesc="collection of vulkan layers from mesa"
	depends="python3"
	provider_priority=100

	# Remove this after the release of the next stable (3.14)
	# it originally was claed layer as it only packaged the
	# overlay one but now it also packages device-select and
	# intel-nullhw (on x86*)
	provides="$pkgname-vulkan-layer=$pkgver-r$pkgrel"
	provider_priority=100
	replaces="$pkgname-vulkan-layer=$pkgver-r$pkgrel"

	amove usr/share/vulkan/explicit_layer.d
	amove usr/share/vulkan/implicit_layer.d
	amove usr/lib/libVkLayer_*.so
	amove usr/bin/mesa-overlay-control.py
}

sha512sums="
9476af4b9ac8db5dce397084ef169927d10b28adea7e74aa5b3136810b499ac98ddf7ab564e7d1ff81c887208c8ebab3ad2d4e27e7f46136609b5c67527018eb  mesa-24.0.5.tar.xz
450e9c61a62487e2cc83e03a05521d40a48294118b1af9d56220fb546c50fedd61f1f005b85c5e956e23eb2397f696fe1bbf9626253c99233278ca406b75543b  enable-mali-t600.patch
e3d39d61b14188cd5a22e19e8c065650995f85943e6c42ec5775db5b76a9ebe8913253a8b9ac32056ac13a2c357cd951f867ecb39976c52f7d014dcc1a2d87dc  no-unlink-megadrivers.patch
"