From a069ac41e51d9c462614178c31cd7f57bdec986a Mon Sep 17 00:00:00 2001
From: Sam Lantinga <[EMAIL REDACTED]>
Date: Wed, 12 Nov 2025 21:35:57 -0800
Subject: [PATCH] Don't check SteamVirtualGamepadInfo when running as Wine
Wine will ignore the Steam Virtual Gamepad if it looks like it has the original (blocked) controller VID/PID.
Fixes https://github.com/libsdl-org/SDL/issues/14410
(cherry picked from commit 493bc621e4fe17f9ca279cdb592ee1dfd806d199)
(cherry picked from commit 5bdf7bc6250da11210283d9310903cf6570fe2f1)
---
src/joystick/SDL_steam_virtual_gamepad.c | 35 ++++++++++++++++++++++++
1 file changed, 35 insertions(+)
diff --git a/src/joystick/SDL_steam_virtual_gamepad.c b/src/joystick/SDL_steam_virtual_gamepad.c
index 403f7e7041280..5d225ebac6a6f 100644
--- a/src/joystick/SDL_steam_virtual_gamepad.c
+++ b/src/joystick/SDL_steam_virtual_gamepad.c
@@ -31,6 +31,9 @@
#include <sys/types.h>
#include <sys/stat.h>
#endif
+#ifdef __LINUX__
+#include <unistd.h>
+#endif
#define SDL_HINT_STEAM_VIRTUAL_GAMEPAD_INFO_FILE "SteamVirtualGamepadInfo"
@@ -123,6 +126,28 @@ static void AddVirtualGamepadInfo(int slot, SDL_SteamVirtualGamepadInfo *info)
SDL_zerop(info);
}
+#ifdef __LINUX__
+static const char *SDL_GetExeName(void)
+{
+ const char *proc_name = NULL;
+ static char linkfile[1024];
+ int linksize;
+ const char *proc_path = "/proc/self/exe";
+
+ linksize = readlink(proc_path, linkfile, sizeof(linkfile) - 1);
+ if (linksize > 0) {
+ linkfile[linksize] = '\0';
+ proc_name = SDL_strrchr(linkfile, '/');
+ if (proc_name) {
+ ++proc_name;
+ } else {
+ proc_name = linkfile;
+ }
+ }
+ return proc_name;
+}
+#endif /* __LINUX__ */
+
void SDL_InitSteamVirtualGamepadInfo(void)
{
const char *file;
@@ -131,6 +156,16 @@ void SDL_InitSteamVirtualGamepadInfo(void)
file = SDL_GetHint(SDL_HINT_STEAM_VIRTUAL_GAMEPAD_INFO_FILE);
if (file && *file) {
+#ifdef __LINUX__
+ /* Older versions of Wine will blacklist the Steam Virtual Gamepad if
+ * it appears to have the real controller's VID/PID, so ignore this.
+ */
+ const char *exe = SDL_GetExeName();
+ if (exe && SDL_strcmp(exe, "wine64-preloader") == 0) {
+ SDL_LogDebug(SDL_LOG_CATEGORY_INPUT, "Wine launched by Steam, ignoring %s", SDL_HINT_STEAM_VIRTUAL_GAMEPAD_INFO_FILE);
+ return;
+ }
+#endif
SDL_steam_virtual_gamepad_info_file = SDL_strdup(file);
}
SDL_UpdateSteamVirtualGamepadInfo();