From 1da3ba110c8940146588c9adf52811e70f449eb1 Mon Sep 17 00:00:00 2001
From: ilkecan <ilkecan@protonmail.com>
Date: Fri, 25 Feb 2022 15:17:00 +0000
Subject: [PATCH] common/cpu/intel: define VDPAU_DRIVER env variable

`libvdpau-va-gl` is a wrapper around VAAPI to have a VDPAU driver, which
is required for Intel GPU's. `VDPAU_DRIVER` environment variable is set
to "va_gl", since it defaults to "nvidia".
---
 common/cpu/intel/default.nix | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/common/cpu/intel/default.nix b/common/cpu/intel/default.nix
index ad945f3..273360d 100644
--- a/common/cpu/intel/default.nix
+++ b/common/cpu/intel/default.nix
@@ -3,6 +3,10 @@
 {
   boot.initrd.kernelModules = [ "i915" ];
 
+  environment.variables = {
+    VDPAU_DRIVER = lib.mkIf config.hardware.opengl.enable (lib.mkDefault "va_gl");
+  };
+
   hardware.cpu.intel.updateMicrocode =
     lib.mkDefault config.hardware.enableRedistributableFirmware;