some vr stuff

2025-06-29 19:18:47 +02:00
parent df27b2f789
commit d10fed2673
4 changed files with 109 additions and 5 deletions
--- a/modules/hardware/vr.nix
+++ b/modules/hardware/vr.nix
@@ -0,0 +1,80 @@
+{ pkgs, config, ... }:
+let
+  # https://wiki.nixos.org/wiki/VR#Patching_AMDGPU_to_allow_high_priority_queues
+  amdgpu =
+    { pkgs
+    , lib
+    , kernel ? pkgs.linuxPackages_latest.kernel
+    }:
+
+    pkgs.stdenv.mkDerivation {
+      pname = "amdgpu-kernel-module";
+      inherit (kernel) src version postPatch nativeBuildInputs;
+
+      kernel_dev = kernel.dev;
+      kernelVersion = kernel.modDirVersion;
+
+      modulePath = "drivers/gpu/drm/amd/amdgpu";
+
+      buildPhase = ''
+        BUILT_KERNEL=$kernel_dev/lib/modules/$kernelVersion/build
+
+        cp $BUILT_KERNEL/Module.symvers .
+        cp $BUILT_KERNEL/.config        .
+        cp $kernel_dev/vmlinux          .
+
+        make "-j$NIX_BUILD_CORES" modules_prepare
+        make "-j$NIX_BUILD_CORES" M=$modulePath modules
+      '';
+
+      installPhase = ''
+        make \
+          INSTALL_MOD_PATH="$out" \
+          XZ="xz -T$NIX_BUILD_CORES" \
+          M="$modulePath" \
+          modules_install
+      '';
+
+      meta = {
+        description = "AMD GPU kernel module";
+        license = lib.licenses.gpl3;
+      };
+    };
+  amdgpu-kernel-module = pkgs.callPackage amdgpu {
+    # Make sure the module targets the same kernel as your system is using.
+    kernel = config.boot.kernelPackages.kernel;
+  };
+in
+{
+  #programs.envision = {
+  #  enable = true;
+  #  openFirewall = true;
+  #};
+  #services.monado = {
+  #  enable = true;
+  #  defaultRuntime = true; # Register as default OpenXR runtime
+  #};
+  #environment.systemPackages = with pkgs; [
+  #  monado
+  #];
+  #systemd.user.services.monado.environment = {
+  #  STEAMVR_LH_ENABLE = "1";
+  #  XRT_COMPOSITOR_COMPUTE = "1";
+  #};
+  #  programs.git = {
+  #    enable = true;
+  #    lfs.enable = true;
+  #  };
+  hardware.steam-hardware.enable = true;
+  boot.extraModulePackages = [
+    (amdgpu-kernel-module.overrideAttrs (_: {
+      patches = [
+        (pkgs.fetchpatch {
+          name = "cap_sys_nice_begone.patch";
+          url = "https://github.com/Frogging-Family/community-patches/raw/master/linux61-tkg/cap_sys_nice_begone.mypatch";
+          hash = "sha256-Y3a0+x2xvHsfLax/uwycdJf3xLxvVfkfDVqjkxNaYEo=";
+        })
+      ];
+    }))
+  ];
+}