From f369e804e27731e128caf3b370e0569e0695c57e Mon Sep 17 00:00:00 2001
From: Sam Lantinga <[EMAIL REDACTED]>
Date: Wed, 7 Jan 2026 17:11:57 -0800
Subject: [PATCH] Fixed crash when the broken EZFRD64.DLL is present
Fixes https://github.com/ppy/osu/issues/13634
---
src/joystick/windows/SDL_dinputjoystick.c | 38 +++++++++++++++++++----
1 file changed, 32 insertions(+), 6 deletions(-)
diff --git a/src/joystick/windows/SDL_dinputjoystick.c b/src/joystick/windows/SDL_dinputjoystick.c
index d265d9fcd5fa4..62ffbb46ec9fa 100644
--- a/src/joystick/windows/SDL_dinputjoystick.c
+++ b/src/joystick/windows/SDL_dinputjoystick.c
@@ -45,6 +45,7 @@ extern HWND SDL_HelperWindow;
// local variables
static bool coinitialized = false;
static LPDIRECTINPUT8 dinput = NULL;
+static bool has_broken_EZFRD64DLL = false;
// Taken from Wine - Thanks!
static DIOBJECTDATAFORMAT dfDIJoystick2[] = {
@@ -437,6 +438,29 @@ bool SDL_DINPUT_JoystickInit(void)
dinput = NULL;
return SetDIerror("IDirectInput::Initialize", result);
}
+
+#ifdef _WIN64
+ if (SDL_GetHintBoolean("SDL_JOYSTICK_CHECK_EZFRD64", true)) {
+ // The 64-bit version of EZFRD64.DLL crashes after being loaded,
+ // which happens implicitly when querying the device capabilities,
+ // so make sure we don't do that if there's a possibility of crashing
+ static const char *directories[] = {
+ "C:/Windows/USB_Vibration",
+ "C:/Windows/USB Vibration"
+ };
+ for (int i = 0; i < SDL_arraysize(directories) && !has_broken_EZFRD64DLL; ++i) {
+ int count = 0;
+ char **files = SDL_GlobDirectory(directories[i], "*/EZFRD64.DLL", SDL_GLOB_CASEINSENSITIVE, &count);
+ if (count > 0) {
+ has_broken_EZFRD64DLL = true;
+ }
+ SDL_free(files);
+ }
+ if (has_broken_EZFRD64DLL) {
+ SDL_LogWarn(SDL_LOG_CATEGORY_INPUT, "Broken EZFRD64.DLL detected, disabling DirectInput force feedback");
+ }
+ }
+#endif
return true;
}
@@ -778,12 +802,14 @@ bool SDL_DINPUT_JoystickOpen(SDL_Joystick *joystick, JoyStick_DeviceData *joysti
return SetDIerror("IDirectInputDevice8::SetDataFormat", result);
}
- // Get device capabilities
- result =
- IDirectInputDevice8_GetCapabilities(joystick->hwdata->InputDevice,
- &joystick->hwdata->Capabilities);
- if (FAILED(result)) {
- return SetDIerror("IDirectInputDevice8::GetCapabilities", result);
+ if (!has_broken_EZFRD64DLL) {
+ // Get device capabilities to see if we are force feedback capable
+ result =
+ IDirectInputDevice8_GetCapabilities(joystick->hwdata->InputDevice,
+ &joystick->hwdata->Capabilities);
+ if (FAILED(result)) {
+ return SetDIerror("IDirectInputDevice8::GetCapabilities", result);
+ }
}
// Force capable?