From 068609244832f4376b2d8c961b89de752615146d Mon Sep 17 00:00:00 2001
From: Andrew Eikum <aeikum@codeweavers.com>
Date: Fri, 9 Feb 2018 11:03:59 -0600
Subject: [PATCH] proton: Support launching with dxvk

---
 proton | 27 ++++++++++++++++++++++++++-
 1 file changed, 26 insertions(+), 1 deletion(-)

diff --git a/proton b/proton
index 08a422db..7ae76cb6 100755
--- a/proton
+++ b/proton
@@ -33,7 +33,12 @@ if not ("STEAM_COMPAT_DATA_PATH" in os.environ):
     sys.exit(1)
 
 if "STEAM_COMPAT_CONFIG" in os.environ:
-    config = os.environ["STEAM_COMPAT_CONFIG"]
+    config_opts = os.environ["STEAM_COMPAT_CONFIG"].split(",")
+else:
+    config_opts = []
+
+if "PROTON_USE_DXVK" in os.environ:
+    config_opts.append("dxvk")
 
 basedir = os.path.dirname(sys.argv[0])
 bindir = basedir + "/dist/bin/"
@@ -173,6 +178,26 @@ if not vr_runtime is None:
     except:
         pass
 
+def make_dxvk_links(dll_dir, link_dir):
+    if os.path.lexists(link_dir + "/d3d11.dll"):
+        os.remove(link_dir + "/d3d11.dll")
+    if os.path.lexists(link_dir + "/dxgi.dll"):
+        os.remove(link_dir + "/dxgi.dll")
+    os.symlink(dll_dir + "/d3d11.dll", link_dir + "/d3d11.dll")
+    os.symlink(dll_dir + "/dxgi.dll", link_dir + "/dxgi.dll")
+
+if "dxvk" in config_opts:
+    make_dxvk_links(basedir + "/dist/lib64/wine/dxvk/",
+        prefix + "drive_c/windows/system32")
+    make_dxvk_links(basedir + "/dist/lib/wine/dxvk/",
+        prefix + "drive_c/windows/syswow64")
+    env["WINEDLLOVERRIDES"] = "dxgi,d3d11=n"
+else:
+    make_dxvk_links(basedir + "/dist/lib64/wine/",
+        prefix + "drive_c/windows/system32")
+    make_dxvk_links(basedir + "/dist/lib/wine/",
+        prefix + "drive_c/windows/syswow64")
+
 #determine mode
 if sys.argv[1] == "run":
     #start target app