From 6a2e6c82a0764a00123447d93999ebe14d509aa8 Mon Sep 17 00:00:00 2001
From: Jade Macho <nuda1998@gmail.com>
Date: Tue, 28 Jun 2022 21:03:16 +0200
Subject: [PATCH] Add SDL_HINT_DIRECTINPUT_ENABLED (on by default)

---
 include/SDL_hints.h                       |  9 +++++++++
 src/haptic/windows/SDL_dinputhaptic.c     |  6 ++++++
 src/joystick/windows/SDL_dinputjoystick.c | 11 +++++++++++
 3 files changed, 26 insertions(+)

diff --git a/include/SDL_hints.h b/include/SDL_hints.h
index 781998236..4a0e553ae 100644
--- a/include/SDL_hints.h
+++ b/include/SDL_hints.h
@@ -2001,6 +2001,15 @@ extern "C" {
  */
 #define SDL_HINT_XINPUT_ENABLED "SDL_XINPUT_ENABLED"
 
+ /**
+  *  \brief  A variable that lets you disable the detection and use of DirectInput gamepad devices
+  *
+  *  The variable can be set to the following values:
+  *    "0"       - Disable DirectInput detection (only uses XInput)
+  *    "1"       - Enable DirectInput detection (the default)
+  */
+#define SDL_HINT_DIRECTINPUT_ENABLED "SDL_DIRECTINPUT_ENABLED"
+
 /**
  *  \brief  A variable that causes SDL to use the old axis and button mapping for XInput devices.
  *
diff --git a/src/haptic/windows/SDL_dinputhaptic.c b/src/haptic/windows/SDL_dinputhaptic.c
index f10c369af..2229c6916 100644
--- a/src/haptic/windows/SDL_dinputhaptic.c
+++ b/src/haptic/windows/SDL_dinputhaptic.c
@@ -27,6 +27,7 @@
 
 #if SDL_HAPTIC_DINPUT
 
+#include "SDL_hints.h"
 #include "SDL_stdinc.h"
 #include "SDL_timer.h"
 #include "SDL_windowshaptic_c.h"
@@ -77,6 +78,11 @@ SDL_DINPUT_HapticInit(void)
         return SDL_SetError("Haptic: SubSystem already open.");
     }
 
+    if (!SDL_GetHintBoolean(SDL_HINT_DIRECTINPUT_ENABLED, SDL_TRUE)) {
+        /* In some environments, IDirectInput8_Initialize / _EnumDevices can take a minute even with no controllers. */
+        return 0;
+    }
+
     ret = WIN_CoInitialize();
     if (FAILED(ret)) {
         return DI_SetError("Coinitialize", ret);
diff --git a/src/joystick/windows/SDL_dinputjoystick.c b/src/joystick/windows/SDL_dinputjoystick.c
index da35ebb00..5122f0cae 100644
--- a/src/joystick/windows/SDL_dinputjoystick.c
+++ b/src/joystick/windows/SDL_dinputjoystick.c
@@ -24,6 +24,7 @@
 
 #if SDL_JOYSTICK_DINPUT
 
+#include "SDL_hints.h"
 #include "SDL_windowsjoystick_c.h"
 #include "SDL_dinputjoystick_c.h"
 #include "SDL_rawinputjoystick_c.h"
@@ -397,6 +398,12 @@ SDL_DINPUT_JoystickInit(void)
     HRESULT result;
     HINSTANCE instance;
 
+    if (!SDL_GetHintBoolean(SDL_HINT_DIRECTINPUT_ENABLED, SDL_TRUE)) {
+        /* In some environments, IDirectInput8_Initialize / _EnumDevices can take a minute even with no controllers. */
+        dinput = NULL;
+        return 0;
+    }
+
     result = WIN_CoInitialize();
     if (FAILED(result)) {
         return SetDIerror("CoInitialize", result);
@@ -539,6 +546,10 @@ err:
 void
 SDL_DINPUT_JoystickDetect(JoyStick_DeviceData **pContext)
 {
+    if (dinput == NULL) {
+        return;
+    }
+
     IDirectInput8_EnumDevices(dinput, DI8DEVCLASS_GAMECTRL, EnumJoystickDetectCallback, pContext, DIEDFL_ATTACHEDONLY);
 }