# 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 xorg-libxdamage xorg-libxrandr xorg-libxshmfence xorg-libxvmc xorg-libxxf86vm
# Optional: cbindgen directx-headers glslang libclc libunwind libva libvdpau lm_sensors lua python3-ply rust-bindgen spirv-llvm-translator vulkan-loader wayland-protocols

name=mesa
version=24.1.4
release=2
source=(https://archive.mesa3d.org/$name-$version.tar.xz
	0001-Revert-frontends-va-Fix-AV1-slice_data_offset-with-m.patch)

build() {
	prt-get isinst directx-headers && PKGMK_MESA_GALLIUM+='d3d12,'
	prt-get isinst 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 && PKGMK_MESA+=' -D libunwind=enabled'
	prt-get isinst libva && PKGMK_MESA+=' -D gallium-va=enabled' || PKGMK_MESA+=' -D gallium-va=disabled'
	prt-get isinst libvdpau && PKGMK_MESA+=' -D gallium-vdpau=enabled' || PKGMK_MESA+=' -D gallium-vdpau=disabled'
	prt-get isinst lm_sensors && PKGMK_MESA+=' -D lmsensors=enabled'
	if prt-get isinst vulkan-loader; then
		prt-get isinst cbindgen rust-bindgen && 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,'
		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 xorg-libxrandr xorg-libxshmfence xorg-libxvmc xorg-libxxf86vm && PKGMK_MESA_PLATFORMS+=',x11'
	PKGMK_MESA_PLATFORMS+=',x11'

	patch -Np1 -d $name-$version -i $SRC/0001-Revert-frontends-va-Fix-AV1-slice_data_offset-with-m.patch
	printf '%s' "$version-$release" > $name-$version/VERSION

	meson setup build $name-$version $PKGMK_MESA \
		--prefix=/usr \
		--sysconfdir=/etc \
		--buildtype=plain \
		-D b_lto=false \
		-D b_pie=true \
		-D dri3=enabled \
		-D egl=enabled \
		-D llvm=enabled \
		-D shared-llvm=enabled \
		-D gbm=enabled \
		-D gles1=disabled \
		-D gles2=enabled \
		-D glx=dri \
		-D osmesa=true \
		-D gallium-xa=enabled \
		-D gallium-drivers=${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/lib/libGLX_indirect.so.0
}