# Description: Mesa 3D Graphics Library
# URL: https://www.mesa3d.org/
# Maintainer: CRUX compat-32 Team, compat-32-ports at crux dot nu
# Depends on: elfutils-32 expat-32 libdrm-32 libglvnd-32 llvm-32 mesa xorg-libxdamage-32 xorg-libxrandr-32 xorg-libxshmfence-32 xorg-libxvmc-32 xorg-libxxf86vm-32
# Optional: clang-32 glslang libclc libva-32 libvdpau-32 spirv-llvm-translator-32 vulkan-loader-32 wayland-protocols

name=mesa-32
version=24.1.5
release=1
source=(https://archive.mesa3d.org/mesa-$version.tar.xz
	x86-linux-gnu x86-linux-gnu-ccache)

build() {
	export PKG_CONFIG_LIBDIR='/usr/lib32/pkgconfig:/usr/share/pkgconfig'

	prt-get isinst ccache && local _cross_file='x86-linux-gnu-ccache' || local _cross_file='x86-linux-gnu'

	prt-get isinst directx-headers-32 && PKGMK_MESA_GALLIUM+='d3d12,'
	prt-get isinst clang-32 libclc && PKGMK_MESA+=' -D gallium-opencl=icd' PKGMK_MESA_GALLIUM+='iris,'
	prt-get isinst libclc rust-bindgen && PKGMK_MESA+=' -D gallium-rusticl=true'
	prt-get isinst libunwind-32 && PKGMK_MESA+=' -D libunwind=enabled'
	prt-get isinst libva-32 && PKGMK_MESA+=' -D gallium-va=enabled' || PKGMK_MESA+=' -D gallium-va=disabled'
	prt-get isinst libvdpau-32 && PKGMK_MESA+=' -D gallium-vdpau=enabled' || PKGMK_MESA+=' -D gallium-vdpau=disabled'
	prt-get isinst lm_sensors-32 && PKGMK_MESA+=' -D lmsensors=enabled'
	if prt-get isinst vulkan-loader-32; then
		prt-get isinst cbindgen rust-bindgen && PKGMK_MESA_VULKAN_DRIVERS+='nouveau,'
		prt-get isinst directx-headers-32 && 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 spirv-llvm-translator-32 clang-32 && PKGMK_MESA_VULKAN_DRIVERS+='intel,' PKGMK_MESA_VULKAN_LAYERS+='intel-nullhw,'
		VULKAN_DRIVERS=${PKGMK_MESA_VULKAN_DRIVERS#,}intel_hasvk,swrast,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-32 xorg-libxrandr-32 xorg-libxshmfence-32 xorg-libxvmc-32 xorg-libxxf86vm-32 && PKGMK_MESA_PLATFORMS+=',x11'
	PKGMK_MESA_PLATFORMS+=',x11'

	meson setup mesa-$version build $PKGMK_MESA \
		--cross-file=$SRC/$_cross_file \
		--prefix=/usr \
		--libdir=/usr/lib32 \
		--sysconfdir=/etc \
		--buildtype=plain \
		-D b_lto=false \
		-D b_pie=true \
		-D dri3=enabled \
		-D egl=enabled \
		-D llvm=enabled \
		-D shared-llvm=enabled \
		-D gbm=enabled \
		-D gles1=disabled \
		-D gles2=enabled \
		-D glx=dri \
		-D osmesa=true \
		-D gallium-xa=enabled \
		-D gallium-drivers=${PKGMK_MESA_GALLIUM}crocus,nouveau,r300,r600,radeonsi,svga,swrast,virgl,i915 \
		-D platforms=${PKGMK_MESA_PLATFORMS#,} \
		-D shared-glapi=enabled \
		-D video-codecs=all \
		-D glvnd=enabled \
		-D vulkan-drivers=$VULKAN_DRIVERS \
		-D vulkan-layers=$VULKAN_LAYERS

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

	# indirect rendering symlink
	ln -s libGLX_mesa.so.0 $PKG/usr/lib32/libGLX_indirect.so.0
	rm -r $PKG/usr/{include,share/{drirc.d,glvnd}}
	rm -rf $PKG/usr/{bin,share/vulkan/{explicit_layer.d,implicit_layer.d}}
}