# Maintainer: Jan de Groot <jgc@archlinux.org>
# Maintainer: Andreas Radke <andyrtr@archlinux.org>

# ALARM: Kevin Mihelich <kevin@archlinuxarm.org>
#  - Removed DRI and Gallium3D drivers/packages for chipsets that don't exist in our ARM devices (intel, VMware svga).
#  - disable assembly and rip out VC4 forced NEON for v6/v7
#  - remove makedepend on valgrind, -Dvalgrind=false

pkgbase=mesa
pkgname=('vulkan-mesa-layer' 'opencl-mesa' 'vulkan-radeon' 'libva-mesa-driver' 'mesa-vdpau' 'mesa')
pkgdesc="An open-source implementation of the OpenGL specification"
pkgver=19.3.4
pkgrel=1
arch=('x86_64')
makedepends=('python-mako' 'libxml2' 'libx11' 'xorgproto' 'libdrm' 'libxshmfence' 'libxxf86vm'
             'libxdamage' 'libvdpau' 'libva' 'wayland' 'wayland-protocols'
             'elfutils' 'llvm' 'libomxil-bellagio' 'libclc' 'clang' 'libglvnd' 'lm_sensors'
             'libxrandr' 'glslang' 'meson')
url="https://www.mesa3d.org/"
license=('custom')
source=(https://mesa.freedesktop.org/archive/mesa-${pkgver}.tar.xz{,.sig}
        0001-Rip-out-VC4-forced-NEON.patch
        LICENSE)
sha512sums=('2bbb3dc8f1d839f11fe12cc959393cd69607fa6714b2166b80299e0559d2d3b0ac38ed4e15ac3e5f472264eb24536d1901d350f7409f3a7e00d6f4ccbb2312fb'
            'SKIP'
            'ba55fd9816ebd9147be120da1fd4fa0364d19967a11570e6d5dd9d8b4f7971df46ced8b151ee07afaaa98043e131eed14918ec25f8c9b0f7e5c53f452674ee5c'
            'f9f0d0ccf166fe6cb684478b6f1e1ab1f2850431c06aa041738563eb1808a004e52cdec823c103c9e180f03ffc083e95974d291353f0220fe52ae6d4897fecc7')
validpgpkeys=('8703B6700E7EE06D7A39B8D6EDAE37B02CEB490D'  # Emil Velikov <emil.l.velikov@gmail.com>
              '946D09B5E4C9845E63075FF1D961C596A7203456'  # Andres Gomez <tanty@igalia.com>
              'E3E8F480C52ADD73B278EE78E1ECBE07D7D70895'  # Juan Antonio Suárez Romero (Igalia, S.L.) <jasuarez@igalia.com>
              'A5CC9FEC93F2F837CB044912336909B6B25FADFA'  # Juan A. Suarez Romero <jasuarez@igalia.com>
              '71C4B75620BC75708B4BDB254C95FAAB3EB073EC') # Dylan Baker <dylan@pnwbakers.com>

prepare() {
  cd mesa-$pkgver

  [[ $CARCH == "armv6h" || $CARCH == "armv7h" ]] && patch -p1 -i ../0001-Rip-out-VC4-forced-NEON.patch || true
}

build() {
  MESON_OPT="-D asm=false"
  case "${CARCH}" in
    armv6h)  GALLIUM=",vc4" ;;
    armv7h)  GALLIUM=",etnaviv,kmsro,lima,panfrost,tegra,v3d,vc4" ;;
    aarch64) GALLIUM=",kmsro,lima,panfrost,v3d,vc4" ;;
  esac

  arch-meson mesa-$pkgver build \
    -D b_lto=false \
    -D b_ndebug=true \
    -D platforms=x11,wayland,drm,surfaceless \
    -D dri-drivers=r100,r200,nouveau \
    -D gallium-drivers=r300,r600,radeonsi,freedreno,nouveau,swrast,virgl${GALLIUM} \
    -D vulkan-drivers=amd \
    -D vulkan-overlay-layer=true \
    -D dri3=true \
    -D egl=true \
    -D gallium-extra-hud=true \
    -D gallium-nine=true \
    -D gallium-omx=bellagio \
    -D gallium-opencl=icd \
    -D gallium-va=true \
    -D gallium-vdpau=true \
    -D gallium-xa=false \
    -D gallium-xvmc=false \
    -D gbm=true \
    -D gles1=false \
    -D gles2=true \
    -D glvnd=true \
    -D glx=dri \
    -D libunwind=false \
    -D llvm=true \
    -D lmsensors=true \
    -D osmesa=gallium \
    -D shared-glapi=true \
    -D valgrind=false $MESON_OPT

  # Print config
  meson configure build

  ninja -C build

  # fake installation to be seperated into packages
  # outside of fakeroot but mesa doesn't need to chown/mod
  DESTDIR="${srcdir}/fakeinstall" ninja -C build install
}

_install() {
  local src f dir
  for src; do
    f="${src#fakeinstall/}"
    dir="${pkgdir}/${f%/*}"
    install -m755 -d "${dir}"
    mv -v "${src}" "${dir}/"
  done
}

package_vulkan-mesa-layer() {
  pkgdesc="Vulkan overlay layer to display information about the application"
  
  _install fakeinstall/usr/share/vulkan/explicit_layer.d
  _install fakeinstall/usr/lib/libVkLayer_MESA_overlay.so

  install -m644 -Dt "${pkgdir}/usr/share/licenses/${pkgname}" LICENSE
}

package_opencl-mesa() {
  pkgdesc="OpenCL support for AMD/ATI Radeon mesa drivers"
  depends=('expat' 'libdrm' 'libelf' 'libclc' 'clang')
  optdepends=('opencl-headers: headers necessary for OpenCL development')
  provides=('opencl-driver')

  _install fakeinstall/etc/OpenCL
  _install fakeinstall/usr/lib/lib*OpenCL*
  _install fakeinstall/usr/lib/gallium-pipe

  install -m644 -Dt "${pkgdir}/usr/share/licenses/${pkgname}" LICENSE
}

package_vulkan-radeon() {
  pkgdesc="Radeon's Vulkan mesa driver"
  depends=('wayland' 'libx11' 'libxshmfence' 'libelf' 'libdrm' 'llvm-libs')
  optdepends=('vulkan-mesa-layer: a vulkan layer to display information using an overlay')
  provides=('vulkan-driver')
 
  _install fakeinstall/usr/share/vulkan/icd.d/radeon_icd*.json
  _install fakeinstall/usr/lib/libvulkan_radeon.so

  install -m644 -Dt "${pkgdir}/usr/share/licenses/${pkgname}" LICENSE
}

package_libva-mesa-driver() {
  pkgdesc="VA-API implementation for gallium"
  depends=('libdrm' 'libx11' 'llvm-libs' 'expat' 'libelf' 'libxshmfence')

  _install fakeinstall/usr/lib/dri/*_drv_video.so
   
  install -m644 -Dt "${pkgdir}/usr/share/licenses/${pkgname}" LICENSE
}

package_mesa-vdpau() {
  pkgdesc="Mesa VDPAU drivers"
  depends=('libdrm' 'libx11' 'llvm-libs' 'expat' 'libelf' 'libxshmfence')

  _install fakeinstall/usr/lib/vdpau
   
  install -m644 -Dt "${pkgdir}/usr/share/licenses/${pkgname}" LICENSE
}

package_mesa() {
  depends=('libdrm' 'wayland' 'libxxf86vm' 'libxdamage' 'libxshmfence' 'libelf' 
           'libomxil-bellagio' 'llvm-libs' 'lm_sensors' 'libglvnd')
  optdepends=('opengl-man-pages: for the OpenGL API man pages'
              'mesa-vdpau: for accelerated video playback'
              'libva-mesa-driver: for accelerated video playback')
  provides=('mesa-libgl' 'opengl-driver')
  conflicts=('mesa-libgl')
  replaces=('mesa-libgl')

  _install fakeinstall/usr/share/drirc.d/00-mesa-defaults.conf
  _install fakeinstall/usr/share/glvnd/egl_vendor.d/50_mesa.json

  # ati-dri, nouveau-dri, intel-dri, svga-dri, swrast, swr
  _install fakeinstall/usr/lib/dri/*_dri.so
   
  _install fakeinstall/usr/lib/bellagio
  _install fakeinstall/usr/lib/d3d
  _install fakeinstall/usr/lib/lib{gbm,glapi}.so*
  _install fakeinstall/usr/lib/libOSMesa.so*

  # in vulkan-headers
  rm -rfv fakeinstall/usr/include/vulkan

  _install fakeinstall/usr/include
  rm -f fakeinstall/usr/lib/pkgconfig/{egl,gl}.pc
  _install fakeinstall/usr/lib/pkgconfig

  # libglvnd support
  _install fakeinstall/usr/lib/libGLX_mesa.so*
  _install fakeinstall/usr/lib/libEGL_mesa.so*

  # indirect rendering
  ln -s /usr/lib/libGLX_mesa.so.0 "${pkgdir}/usr/lib/libGLX_indirect.so.0"

  # make sure there are no files left to install
  find fakeinstall -depth -print0 | xargs -0 rmdir

  install -m644 -Dt "${pkgdir}/usr/share/licenses/${pkgname}" LICENSE
}