# Description: Mesa 3D Graphics Library
# URL: https://www.mesa3d.org/
# Maintainer: CRUX Xorg Team, xorg-ports at crux dot nu
# Depends on: elfutils libdrm libglvnd llvm python3-mako python3-pyyaml xorg-libxdamage xorg-libxrandr xorg-libxshmfence xorg-libxvmc xorg-libxxf86vm
# Optional: cbindgen directx-headers glslang libclc libdisplay-info libunwind libva lm_sensors lua python3-ply rust-bindgen spirv-llvm-translator vulkan-loader wayland-protocols

name=mesa
version=26.1.3
release=1
source=(https://archive.mesa3d.org/$name-$version.tar.xz)

build() {
    prt-get isinst directx-headers && PKGMK_MESA_GALLIUM+='d3d12,'
    prt-get isinst libclc && PKGMK_MESA_GALLIUM+='crocus,iris,'
    prt-get isinst libclc rust-bindgen && PKGMK_MESA+=' -D gallium-rusticl=true'
    prt-get isinst libdisplay-info && PKGMK_MESA+=' -D display-info=enabled'
    prt-get isinst libunwind && PKGMK_MESA+=' -D libunwind=enabled'
    prt-get isinst libva && PKGMK_MESA+=' -D gallium-va=enabled' || PKGMK_MESA+=' -D gallium-va=disabled'
    prt-get isinst lm_sensors && PKGMK_MESA+=' -D lmsensors=enabled'
    if prt-get isinst vulkan-loader; then
        prt-get isinst cbindgen rust-bindgen spirv-llvm-translator && PKGMK_MESA_VULKAN_DRIVERS+='nouveau,'
        prt-get isinst directx-headers && PKGMK_MESA_VULKAN_DRIVERS+='microsoft-experimental,'
        prt-get isinst glslang && PKGMK_MESA_VULKAN_DRIVERS+='amd,' PKGMK_MESA_VULKAN_LAYERS+='overlay,'
        prt-get isinst glslang libclc python3-ply lua && PKGMK_MESA_VULKAN_DRIVERS+='intel,' PKGMK_MESA_VULKAN_LAYERS+='intel-nullhw,'
        prt-get isinst libclc && PKGMK_MESA_VULKAN_DRIVERS+='intel_hasvk,'
        VULKAN_DRIVERS=${PKGMK_MESA_VULKAN_DRIVERS#,}virtio
        PKGMK_MESA_GALLIUM+='zink,'
    else
        VULKAN_DRIVERS=""
        VULKAN_LAYERS=""
    fi
    prt-get isinst wayland-protocols && PKGMK_MESA_PLATFORMS+='wayland'
    ## for future references
    #prt-get isinst xorg-libxdamage xorg-libxrandr xorg-libxshmfence xorg-libxvmc xorg-libxxf86vm && PKGMK_MESA_PLATFORMS+=',x11'
    PKGMK_MESA_PLATFORMS+=',x11'

    printf '%s' "$version-$release" > $name-$version/VERSION

    meson setup build $name-$version $PKGMK_MESA \
        --prefix=/usr \
        --sysconfdir=/etc \
        --buildtype=plain \
        -D b_lto=false \
        -D b_pie=true \
        -D egl=enabled \
        -D llvm=enabled \
        -D shared-llvm=enabled \
        -D gbm=enabled \
        -D gles1=disabled \
        -D gles2=enabled \
        -D glx=dri \
        -D gallium-drivers=${PKGMK_MESA_GALLIUM}nouveau,r300,r600,radeonsi,svga,virgl,i915 \
        -D platforms=${PKGMK_MESA_PLATFORMS#,} \
        -D video-codecs=all \
        -D glvnd=enabled \
        -D vulkan-drivers=$VULKAN_DRIVERS \
        -D vulkan-layers=$VULKAN_LAYERS \
        -D intel-rt=enabled

    meson compile -C build -j ${JOBS:-1}
    DESTDIR=$PKG meson install -C build

    # indirect rendering symlink
    ln -s libGLX_mesa.so.0 $PKG/usr/lib/libGLX_indirect.so.0
}