swiftshader: init package | obs-studio: use swiftshader

pkgs/apps/obs/default.nix

@@ -47,6 +47,8 @@
 , websocketpp
 , amf-headers 
 , libGL
+, vulkan-loader
+, swiftshader
 }:
 
 let
@@ -107,6 +109,7 @@ stdenv.mkDerivation rec {
     libva
     srt
     qtwayland
+    swiftshader
   ]
   ++ optionals scriptingSupport [ luajit python3 ]
   ++ optional alsaSupport alsa-lib
@@ -120,6 +123,7 @@ stdenv.mkDerivation rec {
       cp -r $i cef/Release/
       cp -r $i cef/Resources/
     done
+    cp -r ${swiftshader}/lib/libvk_swiftshader.so cef/Release/
     cp -r ${libcef}/lib/libcef.so cef/Release/
     cp -r ${libcef}/lib/libcef_dll_wrapper.a cef/libcef_dll_wrapper/
     cp -r ${libcef}/include cef/
@@ -142,7 +146,7 @@ stdenv.mkDerivation rec {
   preFixup = ''
     qtWrapperArgs+=(
       --prefix LD_LIBRARY_PATH : "${lib.makeLibraryPath [ xorg.libX11 libvlc ]}"
-      --suffix LD_LIBRARY_PATH : "${lib.makeLibraryPath [ libGL ]}"
+      --suffix LD_LIBRARY_PATH : "${lib.makeLibraryPath [ libGL vulkan-loader ]}"
       --prefix LD_LIBRARY_PATH : "$out/lib"
       ''${gappsWrapperArgs[@]}
     )

pkgs/default.nix

@@ -15,11 +15,13 @@ rec {
       VideoDecodeAcceleration VideoToolbox;
   };
 
-  obs-amf = pkgs.qt6Packages.callPackage ./apps/obs { ffmpeg = ffmpeg6-amf-full; };
+  obs-amf = pkgs.qt6Packages.callPackage ./apps/obs { ffmpeg = ffmpeg6-amf-full; inherit swiftshader;};
 
   polymc = pkgs.qt6Packages.callPackage ./apps/games/polymc {};
 
   vpk_fuse = callPackage ./apps/vpk_fuse.nix {};
 
+  swiftshader = callPackage ./libs/swiftshader.nix {};
+
 
 }

pkgs/libs/swiftshader.nix

@@ -0,0 +1,29 @@
+{ pkgs, lib, stdenv, fetchFromGitHub, cmake, python3 }:
+
+
+stdenv.mkDerivation rec {
+  pname = "swiftshader";
+  version = "20072023";
+  src = fetchFromGitHub {
+    owner = "google";
+    repo = "SwiftShader";
+    rev = "4a260c12b8c155103435a7b2b99b5227f6ce7594";
+    sha256 = "sha256-WcA1EazeuRlFhIaAKgJHp+rUkCR2vqcINkTMYOgrbNI=";
+    fetchSubmodules = true;
+  };
+
+  buildInputs = [ cmake python3 ];
+
+  installPhase = ''
+    mkdir -p $out/lib
+    mv libvk_swiftshader.so $out/lib
+  '';
+
+
+  meta = with lib; {
+    description = "SwiftShader is a high-performance CPU-based implementation of the Vulkan 1.3 graphics API";
+    homepage = "https://swiftshader.googlesource.com/SwiftShader";
+    license = licenses.asl20;
+    platforms = platforms.linux;
+  };
+}