pkgbase=mesa
pkgname=(
  mesa
  vulkan-intel
  vulkan-nouveau
  vulkan-radeon
  vulkan-virtio
  vulkan-mesa-layers
  vulkan-mesa-implicit-layers
)
pkgver=26.1.0
_pkgver=${pkgver/[a-z]/-&}
pkgrel=1
epoch=1
pkgdesc="Open-source OpenGL drivers"
url="https://gitlab.freedesktop.org/mesa/mesa"
arch=(x86_64)
license=("MIT AND BSD-3-Clause AND SGI-B-2.0")
makedepends=(
  clang
  directx-headers
  expat
  glibc
  libdisplay-info
  libdrm
  libelf
  libgcc
  libglvnd
  libpng
  libstdc++
  libva
  libx11
  libxcb
  libxext
  libxml2
  libxrandr
  libxshmfence
  libxxf86vm
  llvm
  llvm-libs
  lm_sensors
  rust
  spirv-llvm-translator
  spirv-tools
  systemd-libs
  vulkan-icd-loader
  wayland
  xcb-util-keysyms
  zlib
  zstd

  # shared between mesa and lib32-mesa
  cbindgen
  clang
  cmake
  elfutils
  glslang
  libclc
  meson
  python-mako
  python-packaging
  python-ply
  python-pycparser
  python-yaml
  rust-bindgen
  wayland-protocols
  xorgproto

  # mesa-only deps
  libsysprof-capture
  valgrind

  # html-docs
  python-sphinx
  python-sphinx-hawkmoth
)
options=(
  # GCC 14 LTO causes segfault in LLVM under si_llvm_optimize_module
  # https://gitlab.freedesktop.org/mesa/mesa/-/issues/11140
  #
  # In general, upstream considers LTO to be broken until explicit notice.
  !lto
)
source=("${pkgname}::git+${url}.git#branch=main")

# Rust crates for NVK, used as Meson subprojects
declare -A _crates=(
  bitflags         2.9.1
  cfg-if           1.0.0
  equivalent       1.0.1
  errno            0.3.12
  hashbrown        0.14.1
  indexmap         2.2.6
  libc             0.2.171
  log              0.4.27
  once_cell        1.8.0
  paste            1.0.14
  pest             2.8.0
  pest_derive      2.8.0
  pest_generator   2.8.0
  pest_meta        2.8.0
  proc-macro2      1.0.86
  quote            1.0.35
  remain           0.2.12
  roxmltree        0.20.0
  rustc-hash       2.1.1
  rustix           1.1.2
  syn              2.0.87
  thiserror        2.0.11
  thiserror-impl   2.0.11
  ucd-trie         0.1.6
  unicode-ident    1.0.12
  windows-link     0.2.0
  windows-sys      0.61.1
  zerocopy         0.8.13
  zerocopy-derive  0.8.13
)

# Used to generate the above table
_gencrates() {
  grep '^source_url' subprojects/*-rs.wrap | \
    sed -r 's|.*crates/([^/]+)/([0-9.]+)/download|\1 \2|' | \
    column -t -S 2 | sed 's/^/  /'
}

for _crate in "${!_crates[@]}"; do
  _ver="${_crates[$_crate]}"
  source+=(
    "$_crate-$_ver.tar.gz::https://crates.io/api/v1/crates/$_crate/$_ver/download"
  )
done

# https://docs.mesa3d.org/relnotes.html
sha256sums=('SKIP')

prepare() {
  cd mesa

  local src
  for src in "${source[@]}"; do
    src="${src%%::*}"
    src="${src##*/}"
    src="${src%.zst}"
    [[ $src = *.patch ]] || continue
    echo "Applying patch $src..."
    patch -Np1 < "../$src"
  done
}

build() {
  local meson_options=(
    -D amdgpu-virtio=true
    -D intel-virtio-experimental=true
    -D android-libbacktrace=disabled
    -D b_ndebug=true
    -D gallium-drivers=all
    -D gallium-extra-hud=true
    -D gallium-mediafoundation=disabled
    -D gallium-rusticl-enable-drivers=asahi,freedreno,radeonsi
    -D gallium-rusticl=true
    -D gles1=disabled
    -D html-docs=enabled
    -D intel-rt=enabled
    -D libunwind=disabled
    -D microsoft-clc=disabled
    -D sysprof=true
    -D valgrind=enabled
    -D video-codecs=all
    -D vulkan-drivers=all
    -D vulkan-layers=device-select,intel-nullhw,overlay,screenshot,anti-lag,vram-report-limit
    -D vulkan-manifest-per-architecture=false
  )

  # Build only minimal debug info to reduce size
  CFLAGS+=" -g1"
  CXXFLAGS+=" -g1"

  # Inject subproject packages
  export MESON_PACKAGE_CACHE_DIR="$srcdir"

  arch-meson mesa build "${meson_options[@]}"
  meson compile -C build
}

_pick() {
  local p="$1" f d; shift
  for f; do
    d="$srcdir/$p/${f#$pkgdir/}"
    mkdir -p "$(dirname "$d")"
    mv -v "$f" "$d"
    rmdir -p --ignore-fail-on-non-empty "$(dirname "$f")"
  done
}

package_mesa() {
  depends=(
    expat
    glibc
    libdrm
    libelf
    libgcc
    libglvnd
    libstdc++
    libx11
    libxcb
    libxext
    libxshmfence
    libxxf86vm
    llvm-libs
    lm_sensors
    spirv-tools
    wayland
    zlib
    zstd
  )
  optdepends=("opengl-man-pages: for the OpenGL API man pages")
  provides=(
    "libva-mesa-driver=$epoch:$pkgver-$pkgrel"
    "mesa-libgl=$epoch:$pkgver-$pkgrel"
    libva-driver
    opengl-driver
  )
  conflicts=(
    'libva-mesa-driver<1:24.2.7-1'
    'mesa-libgl<17.0.1-2'
  )
  replaces=(
    'libva-mesa-driver<1:24.2.7-1'
    'mesa-libgl<17.0.1-2'
  )

  meson install -C build --destdir "$pkgdir" --no-rebuild

  (
    local libdir=usr/lib

    cd "$pkgdir"

    _pick vkintel $libdir/libvulkan_intel{,_hasvk}.so
    _pick vkintel usr/share/vulkan/icd.d/intel{,_hasvk}_icd.json

    _pick vknvidia $libdir/libvulkan_nouveau.so
    _pick vknvidia usr/share/vulkan/icd.d/nouveau_icd.json

    _pick vkradeon $libdir/libvulkan_radeon.so
    _pick vkradeon usr/share/drirc.d/00-radv-defaults.conf
    _pick vkradeon usr/share/vulkan/icd.d/radeon_icd.json

    _pick vkvirtio $libdir/libvulkan_virtio.so
    _pick vkvirtio usr/share/vulkan/icd.d/virtio_icd.json

    _pick vkdevice $libdir/libVkLayer_MESA_anti_lag.so
    _pick vkdevice $libdir/libVkLayer_MESA_device_select.so
    _pick vkdevice usr/share/vulkan/implicit_layer.d

    _pick vklayer $libdir/libVkLayer_*.so
    _pick vklayer usr/bin/mesa-*-control.py
    _pick vklayer usr/share/vulkan/explicit_layer.d

    # indirect rendering
    ln -sr $libdir/libGLX_{mesa,indirect}.so.0
  )

  install -Dm644 mesa/docs/license.rst -t "$pkgdir/usr/share/licenses/$pkgname"
}

package_vulkan-intel() {
  pkgdesc="Open-source Vulkan driver for Intel GPUs"
  depends=(
    expat
    glibc
    libdisplay-info
    libdrm
    libgcc
    libstdc++
    libx11
    libxcb
    libxshmfence
    spirv-tools
    systemd-libs
    vulkan-icd-loader
    vulkan-mesa-implicit-layers
    wayland
    xcb-util-keysyms
    zlib
    zstd
  )
  optdepends=("vulkan-mesa-layers: additional vulkan layers")
  provides=(vulkan-driver)

  mv vkintel/* "$pkgdir"

  install -Dm644 mesa/docs/license.rst -t "$pkgdir/usr/share/licenses/$pkgname"
}

package_vulkan-nouveau() {
  pkgdesc="Open-source Vulkan driver for Nvidia GPUs"
  depends=(
    expat
    glibc
    libdisplay-info
    libdrm
    libgcc
    libstdc++
    libx11
    libxcb
    libxshmfence
    spirv-tools
    systemd-libs
    vulkan-icd-loader
    vulkan-mesa-implicit-layers
    wayland
    xcb-util-keysyms
    zlib
    zstd
  )
  optdepends=("vulkan-mesa-layers: additional vulkan layers")
  provides=(vulkan-driver)

  mv vknvidia/* "$pkgdir"

  install -Dm644 mesa/docs/license.rst -t "$pkgdir/usr/share/licenses/$pkgname"
}

package_vulkan-radeon() {
  pkgdesc="Open-source Vulkan driver for AMD GPUs"
  depends=(
    expat
    glibc
    libdisplay-info
    libdrm
    libelf
    libgcc
    libstdc++
    libx11
    libxcb
    libxshmfence
    llvm-libs
    spirv-tools
    systemd-libs
    vulkan-icd-loader
    vulkan-mesa-implicit-layers
    wayland
    xcb-util-keysyms
    zlib
    zstd
  )
  optdepends=("vulkan-mesa-layers: additional vulkan layers")
  provides=(vulkan-driver)
  replaces=('amdvlk<=2025.Q2.1-1')

  mv vkradeon/* "$pkgdir"

  install -Dm644 mesa/docs/license.rst -t "$pkgdir/usr/share/licenses/$pkgname"
}

package_vulkan-virtio() {
  pkgdesc="Open-source Vulkan driver for Virtio-GPU (Venus)"
  depends=(
    expat
    glibc
    libdisplay-info
    libdrm
    libgcc
    libx11
    libxcb
    libxshmfence
    systemd-libs
    vulkan-icd-loader
    vulkan-mesa-implicit-layers
    wayland
    xcb-util-keysyms
    zlib
    zstd
  )
  optdepends=("vulkan-mesa-layers: additional vulkan layers")
  provides=(vulkan-driver)

  mv vkvirtio/* "$pkgdir"

  install -Dm644 mesa/docs/license.rst -t "$pkgdir/usr/share/licenses/$pkgname"
}

package_vulkan-mesa-layers() {
  pkgdesc="Mesa's explicit Vulkan layers"
  depends=(
    glibc
    libgcc
    libpng
    libstdc++

    python
  )
  conflicts=(vulkan-mesa-layer)
  replaces=(vulkan-mesa-layer)

  mv vklayer/* "$pkgdir"

  install -Dm644 mesa/docs/license.rst -t "$pkgdir/usr/share/licenses/$pkgname"
}

package_vulkan-mesa-implicit-layers() {
  pkgdesc="Mesa's implicit Vulkan layers"
  depends=(
    glibc
    libdrm
    libxcb
    wayland
  )
  conflicts=(vulkan-mesa-device-select)
  replaces=(vulkan-mesa-device-select)

  mv vkdevice/* "$pkgdir"

  install -Dm644 mesa/docs/license.rst -t "$pkgdir/usr/share/licenses/$pkgname"
}

# vim:set sw=2 sts=-1 et: