diff --git a/build/makefile_base.mak b/build/makefile_base.mak
index 15409ece..076a3a71 100644
--- a/build/makefile_base.mak
+++ b/build/makefile_base.mak
@@ -1149,7 +1149,7 @@ steam_configure: $(STEAMEXE_CONFIGURE_FILES)
 
 steam: SHELL = $(CONTAINER_SHELL32)
 steam: $(STEAMEXE_CONFIGURE_FILES) | $(WINE_BUILDTOOLS32) $(filter $(MAKECMDGOALS),wine64 wine32 wine)
-	+env PATH="$(abspath $(TOOLS_DIR32))/bin:$(PATH)" LDFLAGS="-m32" CXXFLAGS="-m32 -Wno-attributes $(COMMON_FLAGS) -g" CFLAGS="-m32 $(COMMON_FLAGS) -g" \
+	+env PATH="$(abspath $(TOOLS_DIR32))/bin:$(PATH)" LDFLAGS="-m32" CXXFLAGS="-std=gnu++11 -m32 -Wno-attributes $(COMMON_FLAGS) -g" CFLAGS="-m32 $(COMMON_FLAGS) -g" \
 		$(MAKE) -C $(STEAMEXE_OBJ)
 	[ x"$(STRIP)" = x ] || $(STRIP) $(STEAMEXE_OBJ)/steam.exe.so
 	mkdir -pv $(DST_DIR)/lib/wine/
diff --git a/proton b/proton
index 9c16aba0..38a6393e 100755
--- a/proton
+++ b/proton
@@ -513,79 +513,6 @@ class Session:
         else:
             self.env["WINEDLLOVERRIDES"] = s
 
-    def setup_vr(self):
-        #parse linux openvr config and present it in win32 format to the app.
-        #logic from openvr's CVRPathRegistry_Public::GetPaths
-
-        #check environment for overrides
-        vr_runtime = None
-        if "VR_OVERRIDE" in self.env:
-            vr_runtime = self.env["VR_OVERRIDE"]
-            self.env.pop("VR_OVERRIDE")
-
-        vr_config = None
-        if "VR_CONFIG_PATH" in self.env:
-            vr_config = self.env["VR_CONFIG_PATH"]
-            self.env.pop("VR_CONFIG_PATH")
-
-        vr_log = None
-        if "VR_LOG_PATH" in self.env:
-            vr_log = self.env["VR_LOG_PATH"]
-            self.env.pop("VR_LOG_PATH")
-
-        #load from json if needed
-        if vr_runtime is None or \
-                vr_config is None or \
-                vr_log is None:
-            try:
-                path = os.environ.get("XDG_CONFIG_HOME", os.environ["HOME"] + "/.config")
-                path = path + "/openvr/openvrpaths.vrpath"
-
-                with open(path, "r") as jfile:
-                    j = json.load(jfile)
-
-                if vr_runtime is None:
-                    vr_runtime = j["runtime"][0]
-
-                if vr_config is None:
-                    vr_config = j["config"][0]
-
-                if vr_log is None:
-                    vr_log = j["log"][0]
-            except (TypeError, ValueError, OSError):
-                #log("Missing or invalid openvrpaths.vrpath file! " + str(sys.exc_info()[1]))
-                pass
-
-        makedirs(g_compatdata.prefix_dir + "/drive_c/users/steamuser/Local Settings/Application Data/openvr")
-
-        #remove existing file
-        vrpaths_name = g_compatdata.prefix_dir + "/drive_c/users/steamuser/Local Settings/Application Data/openvr/openvrpaths.vrpath"
-        if os.path.exists(vrpaths_name):
-            os.remove(vrpaths_name)
-
-        #dump new file
-        if not vr_runtime is None:
-            try:
-                self.env["PROTON_VR_RUNTIME"] = vr_runtime
-
-                j = { "runtime": [ "C:\\vrclient\\", "C:\\vrclient" ] }
-
-                if not vr_config is None:
-                    win_vr_config = subprocess.check_output([g_proton.wine_bin, "winepath", "-w", vr_config], env=self.env, stderr=self.log_file).decode("utf-8")
-                    j["config"] = [ win_vr_config.strip() ]
-
-                if not vr_log is None:
-                    win_vr_log = subprocess.check_output([g_proton.wine_bin, "winepath", "-w", vr_log], env=self.env, stderr=self.log_file).decode("utf-8")
-                    j["log"] = [ win_vr_log.strip() ]
-
-                j["version"] = 1
-                j["jsonid"] = "vrpathreg"
-
-                with open(vrpaths_name, "w") as vfile:
-                    json.dump(j, vfile, indent=2)
-            except (ValueError, OSError):
-                log("Unable to write VR config! " + str(sys.exc_info()[1]))
-
     def dump_dbg_env(self, f):
         f.write("PATH=\"" + self.env["PATH"] + "\" \\\n")
         f.write("\tTERM=\"xterm\" \\\n") #XXX
@@ -696,7 +623,6 @@ class Session:
         subprocess.call(args, env=local_env, stderr=self.log_file, stdout=self.log_file)
 
     def run(self):
-        self.setup_vr()
         if "PROTON_DUMP_DEBUG_COMMANDS" in self.env and nonzero(self.env["PROTON_DUMP_DEBUG_COMMANDS"]):
             try:
                 self.dump_dbg_scripts()
diff --git a/steam_helper/steam.cpp b/steam_helper/steam.cpp
index 9dcc8914..21134edd 100644
--- a/steam_helper/steam.cpp
+++ b/steam_helper/steam.cpp
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2019, Valve Corporation
+ * Copyright (c) 2015, 2019, 2020 Valve Corporation
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without modification,
@@ -33,6 +33,7 @@
  * Windows version of Steam running. */
 
 #include <windows.h>
+#include <shlobj.h>
 #include <string.h>
 #include <stdio.h>
 
@@ -46,6 +47,8 @@
 
 #include "wine/debug.h"
 
+#include "json/json.h"
+
 WINE_DEFAULT_DEBUG_CHANNEL(steam);
 
 EXTERN_C HANDLE CDECL __wine_make_process_system(void);
@@ -117,6 +120,292 @@ static void setup_steam_registry(void)
     SteamAPI_Shutdown();
 }
 
+static std::string get_linux_vr_path(void)
+{
+    const char *e;
+
+    e = getenv("VR_PATHREG_OVERRIDE");
+    if(e && *e)
+        return e;
+
+    e = getenv("XDG_CONFIG_HOME");
+
+    if(!e || !*e)
+        e = getenv("HOME");
+
+    if(!e || !*e)
+        return "";
+
+    return std::string(e) + "/.config/openvr/openvrpaths.vrpath";
+}
+
+static bool get_windows_vr_path(WCHAR *out_path, bool create)
+{
+    if(FAILED(SHGetFolderPathW(NULL, CSIDL_LOCAL_APPDATA | CSIDL_FLAG_CREATE,
+                    NULL, 0, out_path)))
+        return false;
+
+    lstrcatW(out_path, L"\\openvr");
+
+    if(create)
+        CreateDirectoryW(out_path, NULL);
+
+    lstrcatW(out_path, L"\\openvrpaths.vrpath");
+
+    return true;
+}
+
+static WCHAR *str_to_wchar(const std::string &str)
+{
+    DWORD sz = MultiByteToWideChar(CP_UNIXCP, 0, str.c_str(), -1, NULL, 0);
+    if(!sz)
+        return NULL;
+
+    WCHAR *ret = (WCHAR *)HeapAlloc(GetProcessHeap(), 0, sizeof(WCHAR) * sz);
+    if(!ret)
+        return NULL;
+
+    sz = MultiByteToWideChar(CP_UNIXCP, 0, str.c_str(), -1, ret, sz);
+    if(!sz)
+    {
+        HeapFree(GetProcessHeap(), 0, ret);
+        return NULL;
+    }
+
+    return ret;
+}
+
+static std::string read_text_file(const WCHAR *filename)
+{
+    HANDLE ifile = CreateFileW(filename, GENERIC_READ,
+            FILE_SHARE_READ | FILE_SHARE_WRITE | FILE_SHARE_DELETE, NULL,
+            OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL, NULL);
+    if(ifile == INVALID_HANDLE_VALUE)
+        return "";
+
+    LARGE_INTEGER size;
+
+    if(!GetFileSizeEx(ifile, &size))
+    {
+        CloseHandle(ifile);
+        return "";
+    }
+
+    char *buf = (char *)HeapAlloc(GetProcessHeap(), 0, size.u.LowPart);
+    if(!buf)
+    {
+        CloseHandle(ifile);
+        return "";
+    }
+
+    DWORD readed;
+
+    if(!ReadFile(ifile, buf, size.u.LowPart, &readed, NULL))
+    {
+        HeapFree(GetProcessHeap(), 0, buf);
+        CloseHandle(ifile);
+        return "";
+    }
+
+    CloseHandle(ifile);
+
+    DWORD outsize = 1;
+    for(DWORD i = 1; i < readed; ++i)
+    {
+        if(buf[i] == '\n' && buf[i - 1] == '\r') // CRLF
+            buf[outsize - 1] = '\n';
+        else
+            buf[outsize++] = buf[i];
+    }
+
+    std::string ret(buf, outsize);
+
+    HeapFree(GetProcessHeap(), 0, buf);
+
+    return ret;
+}
+
+static bool write_string_to_file(const WCHAR *filename, const std::string &contents)
+{
+    HANDLE ofile = CreateFileW(filename, GENERIC_WRITE, 0, NULL, CREATE_ALWAYS,
+            FILE_ATTRIBUTE_NORMAL, NULL);
+    if(ofile == INVALID_HANDLE_VALUE)
+        return false;
+
+    DWORD written;
+
+    if(!WriteFile(ofile, contents.data(), (DWORD)contents.length(), &written, NULL))
+    {
+        CloseHandle(ofile);
+        return false;
+    }
+
+    CloseHandle(ofile);
+
+    return true;
+}
+
+static bool convert_path_to_win(std::string &s)
+{
+    WCHAR *path = wine_get_dos_file_name(s.c_str());
+    if(!path)
+        return false;
+
+    DWORD sz = WideCharToMultiByte(CP_UTF8, 0, path, -1, NULL, 0, NULL, NULL);
+    if(!sz)
+    {
+        HeapFree(GetProcessHeap(), 0, path);
+        return false;
+    }
+
+    char *pathUTF8 = (char *)HeapAlloc(GetProcessHeap(), 0, sz);
+    if(!pathUTF8)
+    {
+        HeapFree(GetProcessHeap(), 0, path);
+        return false;
+    }
+
+    sz = WideCharToMultiByte(CP_UTF8, 0, path, -1, pathUTF8, sz, NULL, NULL);
+    if(!sz)
+    {
+        HeapFree(GetProcessHeap(), 0, pathUTF8);
+        HeapFree(GetProcessHeap(), 0, path);
+        return false;
+    }
+
+    s = pathUTF8;
+
+    HeapFree(GetProcessHeap(), 0, pathUTF8);
+    HeapFree(GetProcessHeap(), 0, path);
+
+    return true;
+}
+
+static void convert_json_array_paths(Json::Value &arr)
+{
+    for(uint32_t i = 0; i < arr.size(); ++i)
+    {
+        std::string path(arr[i].asString());
+        if(convert_path_to_win(path))
+            arr[i] = path;
+    }
+}
+
+static void convert_environment_path(const char *nameA, const WCHAR *nameW)
+{
+    /* get linux-side variable */
+    const char *e = getenv(nameA);
+    if(!e || !*e)
+        return;
+
+    /* convert to win and set */
+    WCHAR *path = wine_get_dos_file_name(e);
+    if(!path)
+        return;
+
+    SetEnvironmentVariableW(nameW, path);
+
+    HeapFree(GetProcessHeap(), 0, path);
+}
+
+static void set_env_from_unix(const WCHAR *name, const std::string &val)
+{
+    WCHAR valW[MAX_PATH];
+    DWORD sz;
+
+    sz = MultiByteToWideChar(CP_UTF8, 0, val.c_str(), -1, valW, MAX_PATH);
+    if(!sz)
+    {
+        WINE_WARN("Invalid utf8 seq in vr runtime key\n");
+        return;
+    }
+
+    SetEnvironmentVariableW(name, valW);
+}
+
+static bool convert_linux_vrpaths(void)
+{
+    /* read in linux vrpaths */
+    std::string linux_vrpaths = get_linux_vr_path();
+    if(linux_vrpaths.empty())
+    {
+        WINE_TRACE("Couldn't get openvr vrpaths path\n");
+        return false;
+    }
+
+    WCHAR *linux_vrpathsW = str_to_wchar(linux_vrpaths);
+    if(!linux_vrpathsW)
+        return false;
+
+    std::string contents = read_text_file(linux_vrpathsW);
+    HeapFree(GetProcessHeap(), 0, linux_vrpathsW);
+    if(contents.empty())
+    {
+        WINE_TRACE("openvr vrpaths is empty\n");
+        return false;
+    }
+
+    Json::Value root;
+    Json::Reader reader;
+
+    if(!reader.parse(contents, root))
+    {
+        WINE_WARN("Invalid openvr vrpaths JSON\n");
+        return false;
+    }
+
+    /* pass original runtime path into Wine */
+    if(root.isMember("runtime") && root["runtime"].isArray() && root["runtime"].size() > 0)
+    {
+        set_env_from_unix(L"PROTON_VR_RUNTIME", root["runtime"][0].asString());
+    }
+
+    /* set hard-coded paths */
+    root["runtime"] = Json::Value(Json::ValueType::arrayValue);
+    root["runtime"][0] = "C:\\vrclient\\";
+    root["runtime"][1] = "C:\\vrclient";
+
+    /* map linux paths into windows filesystem */
+    if(root.isMember("config") && root["config"].isArray())
+        convert_json_array_paths(root["config"]);
+
+    if(root.isMember("log") && root["log"].isArray())
+        convert_json_array_paths(root["log"]);
+
+    /* external_drivers is currently unsupported in Proton */
+    root["external_drivers"] = Json::Value(Json::ValueType::nullValue);
+
+    /* write out windows vrpaths */
+    SetEnvironmentVariableW(L"VR_PATHREG_OVERRIDE", NULL);
+    SetEnvironmentVariableW(L"VR_OVERRIDE", NULL);
+    convert_environment_path("VR_CONFIG_PATH", L"VR_CONFIG_PATH");
+    convert_environment_path("VR_LOG_PATH", L"VR_LOG_PATH");
+    Json::StyledWriter writer;
+
+    WCHAR windows_vrpaths[MAX_PATH];
+    if(!get_windows_vr_path(windows_vrpaths, true))
+        return false;
+
+    contents = writer.write(root);
+
+    write_string_to_file(windows_vrpaths, contents);
+
+    return true;
+}
+
+static void setup_vrpaths(void)
+{
+    if(!convert_linux_vrpaths())
+    {
+        /* delete the windows file only if the linux conversion fails */
+        WCHAR windows_vrpaths[MAX_PATH];
+        if(get_windows_vr_path(windows_vrpaths, false))
+        {
+            DeleteFileW(windows_vrpaths);
+        }
+    }
+}
+
 static WCHAR *strchrW(WCHAR *h, WCHAR n)
 {
     do
@@ -293,6 +582,8 @@ int main(int argc, char *argv[])
     {
         HANDLE child;
 
+        setup_vrpaths();
+
         child = run_process();
 
         if (child == INVALID_HANDLE_VALUE)
diff --git a/vrclient_x64/vrclient_x64/vrclient_main.c b/vrclient_x64/vrclient_x64/vrclient_main.c
index e42a1b3c..ad8a2404 100644
--- a/vrclient_x64/vrclient_x64/vrclient_main.c
+++ b/vrclient_x64/vrclient_x64/vrclient_main.c
@@ -43,6 +43,8 @@ typedef struct winRenderModel_t_1819 winRenderModel_t_1819;
 typedef struct winRenderModel_TextureMap_t_1819 winRenderModel_TextureMap_t_1819;
 #include "cppIVRRenderModels_IVRRenderModels_006.h"
 
+#define ARRAY_SIZE(x) (sizeof(x) / sizeof((x)[0]))
+
 WINE_DEFAULT_DEBUG_CHANNEL(vrclient);
 
 BOOL WINAPI DllMain(HINSTANCE instance, DWORD reason, void *reserved)
@@ -216,25 +218,47 @@ static void *(*vrclient_VRClientCoreFactory)(const char *name, int *return_code)
 
 static int load_vrclient(void)
 {
-    char path[PATH_MAX];
+    WCHAR pathW[PATH_MAX];
+    char *pathU;
+    DWORD sz;
+
+#ifdef _WIN64
+    static const char append_path[] = "/bin/linux64/vrclient.so";
+#else
+    static const char append_path[] = "/bin/vrclient.so";
+#endif
 
     if(vrclient_lib)
         return 1;
 
     /* PROTON_VR_RUNTIME is provided by the proton setup script */
-    if(!getenv("PROTON_VR_RUNTIME")){
+    if(!GetEnvironmentVariableW(L"PROTON_VR_RUNTIME", pathW, ARRAY_SIZE(pathW)))
+    {
         TRACE("Linux OpenVR runtime is not available\n");
         return 0;
     }
 
-#ifdef _WIN64
-    snprintf(path, PATH_MAX, "%s/bin/linux64/vrclient.so", getenv("PROTON_VR_RUNTIME"));
-#else
-    snprintf(path, PATH_MAX, "%s/bin/vrclient.so", getenv("PROTON_VR_RUNTIME"));
-#endif
-    TRACE("got openvr runtime path: %s\n", path);
+    sz = WideCharToMultiByte(CP_UNIXCP, 0, pathW, -1, NULL, 0, NULL, NULL);
+    if(!sz)
+    {
+        ERR("Can't convert path to unixcp! %s\n", wine_dbgstr_w(pathW));
+        return 0;
+    }
 
-    vrclient_lib = wine_dlopen(path, RTLD_NOW, NULL, 0);
+    pathU = HeapAlloc(GetProcessHeap(), 0, sz + sizeof(append_path));
+
+    sz = WideCharToMultiByte(CP_UNIXCP, 0, pathW, -1, pathU, sz, NULL, NULL);
+    if(!sz)
+    {
+        ERR("Can't convert path to unixcp! %s\n", wine_dbgstr_w(pathW));
+        return 0;
+    }
+
+    strcat(pathU, append_path);
+
+    TRACE("got openvr runtime path: %s\n", pathU);
+
+    vrclient_lib = wine_dlopen(pathU, RTLD_NOW, NULL, 0);
     if(!vrclient_lib){
         TRACE("unable to load vrclient.so\n");
         return 0;