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nixpkgs/nixos/modules/hardware/opengl.nix

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{ config, lib, pkgs, pkgs_i686, ... }:
with lib;
let
cfg = config.hardware.opengl;
kernelPackages = config.boot.kernelPackages;
videoDrivers = config.services.xserver.videoDrivers;
makePackage = p: p.buildEnv {
name = "mesa-drivers+txc-${p.mesa_drivers.version}";
paths =
[ p.mesa_drivers
p.mesa_noglu # mainly for libGL
(if cfg.s3tcSupport then p.libtxc_dxtn else p.libtxc_dxtn_s2tc)
];
};
in
{
options = {
hardware.opengl.enable = mkOption {
description = "Whether this configuration requires OpenGL.";
type = types.bool;
default = false;
internal = true;
};
hardware.opengl.driSupport = mkOption {
type = types.bool;
default = true;
description = ''
Whether to enable accelerated OpenGL rendering through the
Direct Rendering Interface (DRI).
'';
};
hardware.opengl.driSupport32Bit = mkOption {
type = types.bool;
default = false;
description = ''
On 64-bit systems, whether to support Direct Rendering for
32-bit applications (such as Wine). This is currently only
supported for the <literal>nvidia</literal> and
<literal>ati_unfree</literal> drivers, as well as
<literal>Mesa</literal>.
'';
};
hardware.opengl.s3tcSupport = mkOption {
type = types.bool;
default = false;
description = ''
Make S3TC(S3 Texture Compression) via libtxc_dxtn available
to OpenGL drivers instead of the patent-free S2TC replacement.
Using this library may require a patent license depending on your location.
'';
};
hardware.opengl.package = mkOption {
type = types.package;
internal = true;
description = ''
The package that provides the OpenGL implementation.
'';
};
hardware.opengl.package32 = mkOption {
type = types.package;
internal = true;
description = ''
The package that provides the 32-bit OpenGL implementation on
64-bit systems. Used when <option>driSupport32Bit</option> is
set.
'';
};
};
config = mkIf cfg.enable {
assertions = lib.singleton {
assertion = cfg.driSupport32Bit -> pkgs.stdenv.isx86_64;
message = "Option driSupport32Bit only makes sense on a 64-bit system.";
};
system.activationScripts.setup-opengl =
''
ln -sfn ${cfg.package} /run/opengl-driver
${if pkgs.stdenv.isi686 then ''
ln -sfn opengl-driver /run/opengl-driver-32
'' else if cfg.driSupport32Bit then ''
ln -sfn ${cfg.package32} /run/opengl-driver-32
'' else ''
rm -f /run/opengl-driver-32
''}
'';
environment.sessionVariables.LD_LIBRARY_PATH =
[ "/run/opengl-driver/lib" "/run/opengl-driver-32/lib" ];
hardware.opengl.package = mkDefault (makePackage pkgs);
hardware.opengl.package32 = mkDefault (makePackage pkgs_i686);
boot.extraModulePackages = optional (elem "virtualbox" videoDrivers) kernelPackages.virtualboxGuestAdditions;
};
}