122 lines
3.7 KiB
Nix
122 lines
3.7 KiB
Nix
# This override makes OpenGL just automagically work with VirtualGL
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#
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# Add a setup hook to the mesa_noglu package that automatically adds
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# a libvglfaker.so dependency to executables that depend on libGL.so.
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{ super, stdenv, buildEnv, substituteAll, bash
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, autoreconfHook, pkgconfig, python2
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, xorg, llvmPackages, expat, mesa_glxgallium, mesa_noglu, libglvnd }:
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let
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autoVirtualGLHook =
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let
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# Ugliness required to break the loop created by the fact that
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# the libGL hook requires VirtualGL which requires libGL.
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#
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# This would be clean if super was closed on itself (nixpkgs #15280)
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libGL = super.libGL;
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libGLU = super.libGLU.override { inherit libGL; };
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libGLU_combined = buildEnv {
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name = "libGLU-combined";
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paths = [ libGL libGLU ];
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extraOutputsToInstall = [ "dev" ];
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};
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virtualglLib = (super.virtualglLib.override { inherit libGLU_combined fltk; });
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fltk = super.fltk.override { inherit libGLU_combined freeglut; };
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freeglut = super.freeglut.override { inherit libGL libGLU; };
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in
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substituteAll {
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src = ./insert-virtualgl.sh;
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bash = "${bash}/bin/bash";
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virtualglLib = "${virtualglLib}/lib/libvglfaker.so";
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};
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in {
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# Mesa build for glxgallium software rendering (works with all X11 forwarding)
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mesa_glxgallium = stdenv.mkDerivation rec {
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version = super.mesa_noglu.version;
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name = "mesa-glxgallium-${version}";
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src = super.mesa_noglu.src;
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outputs = [ "out" "dev" ];
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configureFlags = [
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"--with-gallium-drivers=swrast"
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"--with-platforms=x11" # surfaceless would make sense, but egl requires dri
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"--disable-dri"
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"--enable-glx=gallium-xlib" # gallium-xlib requires no dri
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"--enable-gallium-osmesa"
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"--enable-llvm"
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"--disable-egl" # egl requries dri for some reason
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"--disable-gbm" # gbm requires dri for some reason
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"--enable-llvm-shared-libs"
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"--disable-opencl"
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];
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nativeBuildInputs = [
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autoreconfHook pkgconfig
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python2
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];
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propagatedBuildInputs = [ ];
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buildInputs = [
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llvmPackages.llvm
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xorg.xorgproto xorg.libX11 xorg.libXext xorg.libxcb
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expat
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];
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enableParallelBuilding = true;
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meta = with stdenv.lib; {
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description = "An open source implementation of OpenGL";
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homepage = https://www.mesa3d.org/;
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license = licenses.mit; # X11 variant, in most files
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platforms = platforms.linux;
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};
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};
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# Duplicate mesa_noglu.stub with mesa_glxgallium stuffed in as the libGL source
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libGL = stdenv.mkDerivation {
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name = "libGL-${libglvnd.version}";
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outputs = [ "out" "dev" ];
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nativeBuildInputs = [ xorg.lndir ];
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# Use stub libraries from mesa_glxgallium and libglvnd and headers from lib_noglu
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buildCommand = ''
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mkdir -p $out/lib
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lndir -silent ${mesa_glxgallium.out}/lib $out/lib
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lndir -silent ${libglvnd.out}/lib $out/lib
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mkdir -p $dev/{,lib/pkgconfig,nix-support}
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echo "$out" > $dev/nix-support/propagated-build-inputs
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echo ${autoVirtualGLHook} >> $dev/nix-support/propagated-build-inputs
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ln -s ${mesa_noglu.dev}/include $dev/include
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genPkgConfig() {
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local location="$1"
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local name="$2"
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local lib="$3"
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cat <<EOF >$dev/lib/pkgconfig/$name.pc
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Name: $name
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Description: $lib library
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Version: ${mesa_noglu.version}
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Libs: -L$location/lib -l$lib
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Cflags: -I${mesa_noglu.dev}/include
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EOF
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}
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genPkgConfig ${mesa_glxgallium.out} gl GL
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genPkgConfig ${libglvnd.out} egl EGL
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genPkgConfig ${libglvnd.out} glesv1_cm GLESv1_CM
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genPkgConfig ${libglvnd.out} glesv2 GLESv2
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'';
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};
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}
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