# -*- coding: utf-8; mode: tcl; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- vim:fenc=utf-8:ft=tcl:et:sw=4:ts=4:sts=4

PortSystem          1.0
PortGroup           github 1.0

github.setup        KhronosGroup MoltenVK 1.1.9 v
epoch               1
revision            1

set sdkversion      1.3.211.0
categories          graphics
maintainers         {ryandesign @ryandesign} openmaintainer
platforms           macosx
license             Apache-2

# MoltenVK would build for i386, but it uses Metal which only works on x86_64 and arm64
supported_archs     arm64 x86_64

description         an implementation of Vulkan for Metal

long_description    ${name} is an implementation of the high-performance, \
                    industry-standard Vulkan graphics and compute API, that \
                    runs on Apple's Metal graphics framework.

distname            vulkansdk-macos-${sdkversion}
use_dmg             yes

# url only works for the latest avalible SDK, older versions will 404
master_sites        https://sdk.lunarg.com/sdk/download/${sdkversion}/mac/

checksums           sha256  bfe654af00030b6e65521f834f0830f15e18c828594226865f15c92a9ea68363 \
                    rmd160  3674f67b37f7bcc1746d55c3baa975d0cca9dbaa \
                    size    275553243

depends_build       port:p7zip
depends_skip_archcheck p7zip

variant universal   {}
use_configure       no

build {
    # bypass the installer that requires macOS 10.13
    system "${prefix}/bin/7z x -aoa ${worksrcpath}/InstallVulkan.app/Contents/Resources/installer.dat -o${workpath}/VulkanSDK"
}

destroot {
    set output_dir ${workpath}/VulkanSDK

    # Xcode11 and later are required to use "xcframework"
    # Headers currently break build due to Xcode 12 ProcessXCFramework bug:
    # https://developer.apple.com/forums/thread/651043?answerId=628400022#628400022
    if {${os.major} >= 18} {
        file copy ${output_dir}/MoltenVK/MoltenVK.xcframework ${destroot}${frameworks_dir}
    }

    file copy ${output_dir}/macOS/bin/MoltenVKShaderConverter ${destroot}${prefix}/bin
    file attributes ${destroot}${prefix}/bin/MoltenVKShaderConverter -permissions +x
    file copy ${output_dir}/macOS/lib/libMoltenVK.dylib ${destroot}${prefix}/lib

    # vulkan and vk_video are provided via vulkan-headers
    file copy ${output_dir}/MoltenVK/include/MoltenVK ${destroot}${prefix}/include

    if {(![variant_isset universal])} {
        system -W ${destroot}${prefix}/lib "lipo -thin ${configure.build_arch} libMoltenVK.dylib -o libMoltenVK.dylib 2> /dev/null"
    }
}

platform darwin {
    if {${os.major} < 16} {
        archive_sites
        distfiles
        depends_build
        known_fail  yes
        pre-fetch {
            ui_error "${subport} @${version} requires macOS Sierra or later"
            return -code error "incompatible OS X version"
        }
    }
}