===== Vulkan =====

Tricky -- need to set up without X or Wayland, exact process depends on your GPU hardware.

Install these deps first to get them out of the way: ''sudo apt-get install libvulkan-dev libvulkan1 vulkan-tools libdrm-dev libdrm-tests flex bison python3-mako python3-setuptools libexpat1-dev libudev-dev gettext ca-certificates xz-utils zlib1g-dev pkg-config meson --no-install-recommends''


==== Pi 4 ====

Basically follow [[https://forums.libretro.com/t/retroarch-raspberry-pi-4-vulkan-without-x-howto/31164|this post]] except:

Don't bother installing libdrm from source, just do ''sudo apt install libdrm-dev'' as we say above

Run the ''meson'' configure command for Mesa without the ''%%-Ddri-drivers=''%%'' option, which was removed in some recent version of Mesa since the guide was written:

''CFLAGS="-O2 -march=armv8-a+crc+simd -mtune=cortex-a72" CXXFLAGS="-O2 -march=armv8-a+crc+simd -mtune=cortex-a72" meson -Dglx=disabled -Dplatforms= -Dllvm=disabled -Dvulkan-drivers=broadcom -Dgallium-drivers=v3d,vc4,kmsro -Dbuildtype=release ..''

After building Mesa, ''%%sudo ninja install%%'' to install Mesa system-wide

Clone https:%%//%%github.com/krh/vkcube and ''%%mkdir build%%'' and ''%%meson ..%%'' and ''%%ninja%%'' and ''%%./vkcube -m khr -k 0:0:0%%''.

==== Hades Canyon NUC ====

Also similar to above Pi 4 instructions.

''%%modetest -M amdgpu%%'' to list connectors and not try the Intel integrated graphics

''%%modetest -M amdgpu -s 86:3840x2160%%''

You need ''%%glslang-tools%%'' before running ''%%meson%%'' to build Mesa:

''%%sudo apt install glslang-dev glslang-tools spirv-tools python3-mako pkg-config libudev-dev clang llvm-dev bison flex%%''

''%%sudo apt install libelf-dev%%'' for some reason https:%%//%%gitlab.freedesktop.org/mesa/mesa/-/issues/7456 make sure meson finds it below! ''%%Run-time dependency libelf found: YES 0.186%%'' it won’t fail in configure phase if it doesn’t

Mesa ''%%meson%%'' configure options for the AMD GPU:

''%%meson -Dglx=disabled -Dplatforms=  -Dvulkan-drivers=amd -Ddri-drivers='' -Dgallium-drivers=radeonsi  -Dbuildtype=release ..%%''

''%%vulkaninfo%%''

''%%sudo chmod 666 /dev/dri/renderD129%%''

==== Other systems ====

Usually, you need to change the ''-Dvulkan-drivers'' and ''-Dgallium-drivers'' options depending on your GPU.

Intel i915 (Charles): ''meson -Dllvm=disabled -Dglx=disabled -Dplatforms= -Dvulkan-drivers=intel -Dgallium-drivers=i915 -Dbuildtype=release ..''

You might need to chmod a different ''/dev/dri'' path if no Vulkan device found.

==== Other deps ====

''sudo apt install vulkan-validationlayers''

glslc: https://github.com/google/shaderc/blob/main/downloads.md

==== Testing ====

clone https:%%//%%github.com/krh/vkcube

''%%mkdir build; cd build; meson .. && ninja%%''

''%%./vkcube -m khr -k 0:0:0%%''