README.md

@@ -1,70 +1,11 @@
 # lsfg-vk-flake
-Nix flake for using [Lossless Scaling's frame generation on Linux](https://github.com/PancakeTAS/lsfg-vk)
+WIP! Nix flake to build the library for using Lossless Scaling's frame generation on Linux
 
->[!IMPORTANT]
+current state: builds and seems to be functional
-> You need to have Lossless Scaling installed on Steam!
-> In case it is not installed on the default Steam drive, you may want to consider setting the correct path in the lsfg-vk config.
 
-## Installation
+## manual install
-### System-wide (NixOS module)
+1. build the library with ``nix build``
-This approach will install an implicit layer to ``/etc/vulkan/implicit_layer.d/``
+2. copy library and vulkan layer config to your ~/.local: ``cp -r result/* ~/.local/`` (check contents of result first!)
+3. have lossless scaling installed on Steam or manually reference the DLL file using LSFG_DLL_PATH
 
-Add this to your flake inputs, output function and modules list:
+example usage command: ``LD_PRELOAD=~/.local/lib/liblsfg-vk.so LSFG_DLL_PATH=<POINT_ME_TO>/Lossless.dll ENABLE_LSFG=1 vkcube``
-```nix
-inputs = {
-  ...
-  lsfg-vk-flake.url = "github:pabloaul/lsfg-vk-flake/main";
-  lsfg-vk-flake.inputs.nixpkgs.follows = "nixpkgs";
-}
-
-outputs = {nixpkgs, lsfg-vk-flake, ...}: {
-
-  nixosConfigurations.hostname = nixpkgs.lib.nixosSystem {
-    ...
-    modules = [
-      ...
-      lsfg-vk-flake.nixosModules.default
-    ];
-  };
-}
-```
-
-And then enable this in your system config:
-```nix 
-services.lsfg-vk = {
-  enable = true;
-  ui.enable = true; # installs gui for configuring lsfg-vk
-};
-```
-
-### User install (manual)
-1. Build the library:
-  ```bash
-  nix build
-  ```
-2. Create the following path in case it does not exist:
-  ```bash
-  mkdir -p $HOME/.local/share/vulkan/implicit_layer.d
-  ```
-3. Symlink the build results to your $HOME/.local/
-  ```bash
-  cp -ifrsv "$(readlink -f ./result)"/* $HOME/.local/
-  ```
-
-## Usage
-Run a Vulkan application with the environment variable ``ENABLE_LSFG=1`` set.
-
-Example:
-```bash
-ENABLE_LSFG=1 vkcube
-```
-
-To confirm that it is working, look for output like this in the terminal: lsfg-vk(...): ...
-
-You can also enable it per game on Steam by adding this to the launch options: 
-```
-ENABLE_LSFG=1 %COMMAND%
-```
-
->[!NOTE]
-> If the environment variable is set but the program doesn't show any lsfg-vk output, you may need to add the application to your lsfg-vk configuration file at `~/.config/lsfg-vk/config.toml`. Read more about it in the [Wiki](https://github.com/PancakeTAS/lsfg-vk/wiki/Configuring-lsfg-vk)

default.nix

@@ -0,0 +1,47 @@
+{ lib
+, fetchFromGitHub
+, cmake
+, ninja
+, vulkan-headers
+, vulkan-loader
+, llvmPackages
+, spirv-headers
+}: let
+
+in llvmPackages.stdenv.mkDerivation {
+  pname = "lsfg-vk";
+  version = "unstable-2025-07-14-83b869b";
+
+  src = fetchFromGitHub {
+    owner = "PancakeTAS";
+    repo = "lsfg-vk";
+    rev = "83b869b0c4d4cd4da2e760126242c6ed76bafec8";
+    hash = "sha256-LN6DkLN6pMmYRaj+TsAL3PLqINMeYOhQ2Kw16bRF/Q4=";
+    fetchSubmodules = true;
+  };
+
+  cmakeFlags = [
+    "-DCMAKE_BUILD_TYPE=Release"
+  ];
+
+  nativeBuildInputs = [
+    # clang-tools needs to come before clang so it can locate Vulkan headers correctly
+    llvmPackages.clang-tools
+    llvmPackages.clang
+    llvmPackages.libllvm # needed for release builds
+    cmake
+    ninja
+  ];
+
+  buildInputs = [
+    vulkan-headers
+    vulkan-loader
+    spirv-headers
+  ];
+
+  meta = with lib; {
+    homepage = "https://github.com/PancakeTAS/lsfg-vk/";
+    license = licenses.mit;
+    platforms = platforms.linux;
+  };
+}

flake.lock

@@ -2,11 +2,11 @@
   "nodes": {
     "nixpkgs": {
       "locked": {
-        "lastModified": 1756266583,
+        "lastModified": 1751792365,
-        "narHash": "sha256-cr748nSmpfvnhqSXPiCfUPxRz2FJnvf/RjJGvFfaCsM=",
+        "narHash": "sha256-J1kI6oAj25IG4EdVlg2hQz8NZTBNYvIS0l4wpr9KcUo=",
         "owner": "NixOS",
         "repo": "nixpkgs",
-        "rev": "8a6d5427d99ec71c64f0b93d45778c889005d9c2",
+        "rev": "1fd8bada0b6117e6c7eb54aad5813023eed37ccb",
         "type": "github"
       },
       "original": {

flake.nix

@@ -1,17 +1,11 @@
 {
   inputs.nixpkgs.url = "github:NixOS/nixpkgs/nixos-unstable";
 
-  outputs = { nixpkgs, ... }:
+  outputs = { nixpkgs, ... }: let
-  let
+    system = "x86_64-linux";
-    forAllSystems = nixpkgs.lib.genAttrs [ "x86_64-linux" "aarch64-linux" ];
+    pkgs = import nixpkgs { inherit system; };
-  in
+  in {
-  {
+    packages.${system}.default = pkgs.callPackage ./default.nix {};
-    packages = forAllSystems (system: {
-      default = nixpkgs.legacyPackages.${system}.callPackage ./lsfg-vk.nix { };
-      lsfg-vk = nixpkgs.legacyPackages.${system}.callPackage ./lsfg-vk.nix { };
-      lsfg-vk-ui = nixpkgs.legacyPackages.${system}.callPackage ./lsfg-vk-ui.nix { };
-    });
-
     nixosModules.default = import ./module.nix;
   };
 }

lsfg-vk-ui.nix

@@ -1,54 +0,0 @@
-{
-  lib,
-  fetchFromGitHub,
-  rustPlatform,
-  pkg-config,
-  glib,
-  pango,
-  gdk-pixbuf,
-  gtk4,
-  libadwaita,
-}:
-
-rustPlatform.buildRustPackage rec {
-  pname = "lsfg-vk-ui";
-  version = "1.0.0";
-
-  src = fetchFromGitHub {
-    owner = "PancakeTAS";
-    repo = "lsfg-vk";
-    tag = "v${version}";
-    hash = "sha256-nIyVOil/gHC+5a+sH3vMlcqVhixjJaGWqXbyoh2Nqyw=";
-  };
-
-  cargoHash = "sha256-hIQRS/egIDU5Vu/1KWHtpt4S26h+9GadVr+lBAG2LDg=";
-
-  sourceRoot = "source/ui";
-
-  nativeBuildInputs = [
-    pkg-config
-    glib
-  ];
-
-  buildInputs = [
-    pango
-    gdk-pixbuf
-    gtk4
-    libadwaita
-  ];
-
-  postInstall = ''
-    install -Dm444 $src/ui/rsc/gay.pancake.lsfg-vk-ui.desktop $out/share/applications/gay.pancake.lsfg-vk-ui.desktop
-    install -Dm444 $src/ui/rsc/icon.png $out/share/icons/hicolor/256x256/apps/gay.pancake.lsfg-vk-ui.png
-  '';
-
-  meta = {
-    description = "Graphical configuration interface for lsfg-vk";
-    homepage = "https://github.com/PancakeTAS/lsfg-vk/";
-    changelog = "https://github.com/PancakeTAS/lsfg-vk/releases/tag/${src.tag}";
-    license = lib.licenses.mit;
-    platforms = lib.platforms.linux;
-    maintainers = with lib.maintainers; [ pabloaul ];
-    mainProgram = "lsfg-vk-ui";
-  };
-}

lsfg-vk.nix

@@ -1,44 +0,0 @@
-{
-  lib,
-  fetchFromGitHub,
-  cmake,
-  vulkan-headers,
-  llvmPackages,
-}:
-
-llvmPackages.stdenv.mkDerivation rec {
-  pname = "lsfg-vk";
-  version = "1.0.0";
-
-  src = fetchFromGitHub {
-    owner = "PancakeTAS";
-    repo = "lsfg-vk";
-    tag = "v${version}";
-    hash = "sha256-hWpuPH7mKbeMaLaRUwtlkNLy4lOnJEe+yd54L7y2kV0=";
-    fetchSubmodules = true;
-  };
-
-  postPatch = ''
-    substituteInPlace VkLayer_LS_frame_generation.json \
-      --replace-fail "liblsfg-vk.so" "$out/lib/liblsfg-vk.so"
-  '';
-
-  nativeBuildInputs = [
-    llvmPackages.clang-tools
-    llvmPackages.libllvm
-    cmake
-  ];
-
-  buildInputs = [
-    vulkan-headers
-  ];
-
-  meta = {
-    description = "Vulkan layer for frame generation (Requires owning Lossless Scaling)";
-    homepage = "https://github.com/PancakeTAS/lsfg-vk/";
-    changelog = "https://github.com/PancakeTAS/lsfg-vk/releases/tag/${src.tag}";
-    license = lib.licenses.mit;
-    platforms = lib.platforms.linux;
-    maintainers = with lib.maintainers; [ pabloaul ];
-  };
-}

module.nix

@@ -1,69 +1,26 @@
-{
+{ config, lib, pkgs, ... }:
-  config,
-  lib,
-  pkgs,
-  ...
-}:
 let
   cfg = config.services.lsfg-vk;
-  lsfg-vk = pkgs.callPackage ./lsfg-vk.nix { };
+  lsfg-vk = pkgs.callPackage ./default.nix {};
-  lsfg-vk-ui = pkgs.callPackage ./lsfg-vk-ui.nix { };
 in
 {
   options = {
     services.lsfg-vk = {
       enable = lib.mkEnableOption "Lossless Scaling Frame Generation Vulkan layer";
       
-      ui.enable = lib.mkEnableOption "Enables a GUI for configuring lsfg-vk";
-
       package = lib.mkOption {
         type = lib.types.package;
         description = "The lsfg-vk package to use";
         default = lsfg-vk;
       };
-
-      losslessDLLFile = lib.mkOption {
-        type = with lib.types; nullOr str;
-        default = null;
-        example = "/home/user/games/Lossless Scaling/Lossless.dll";
-        description = ''
-          Sets the LSFG_DLL_PATH environment variable.
-          Required if Lossless Scaling isn't installed in a standard location
-        '';
-      };
-
-      configFile = lib.mkOption {
-        type = with lib.types; nullOr str;
-        default = null;
-        example = "/home/user/.config/lsfg-vk/conf.toml";
-        description = ''
-          Sets the LSFG_CONFIG environment variable.
-          Required if the lsfg-vk configuration file isn't stored at the standard location
-        '';
-      };
     };
   };
 
-  config = lib.mkIf cfg.enable (
+  config = lib.mkIf cfg.enable {
-    lib.mkMerge [
+    environment.systemPackages = [ cfg.package ];
-      {
-        environment.systemPackages = [ cfg.package ];
 
-        # Installs the Vulkan implicit layer system-wide
+    # Installs the Vulkan implicit layer system-wide
-        environment.etc."vulkan/implicit_layer.d/VkLayer_LS_frame_generation.json".source =
+    environment.etc."vulkan/implicit_layer.d/VkLayer_LS_frame_generation.json".source = 
-          "${cfg.package}/share/vulkan/implicit_layer.d/VkLayer_LS_frame_generation.json";
+      "${cfg.package}/share/vulkan/implicit_layer.d/VkLayer_LS_frame_generation.json";
-      }
+  };
-      (lib.mkIf cfg.ui.enable {
-        environment.systemPackages = [ lsfg-vk-ui ];
-      })
-      (lib.mkIf (cfg.losslessDLLFile != null) {
-        environment.sessionVariables.LSFG_DLL_PATH =
-          lib.warn "losslessDLLFile is deprecated and will only be used by lsfg-vk if LSFG_LEGACY is set."
-          cfg.losslessDLLFile;
-      })
-      (lib.mkIf (cfg.configFile != null) {
-        environment.sessionVariables.LSFG_CONFIG = cfg.configFile;
-      })
-    ]
-  );
 }