From 845b903324b19e863fd026436ef9b2016ecb0626 Mon Sep 17 00:00:00 2001
From: Sam Lantinga <slouken@libsdl.org>
Date: Wed, 25 Nov 2020 16:46:42 -0800
Subject: [PATCH] Implemented trigger rumble for raw input controllers

---
 include/SDL_config_windows.h                | 20 +++++++++++++++++---
 src/joystick/windows/SDL_rawinputjoystick.c | 21 ++++++++++++++++++---
 2 files changed, 35 insertions(+), 6 deletions(-)

diff --git a/include/SDL_config_windows.h b/include/SDL_config_windows.h
index d43c90ac5..fcc33e3ea 100644
--- a/include/SDL_config_windows.h
+++ b/include/SDL_config_windows.h
@@ -191,6 +191,20 @@ typedef unsigned int uintptr_t;
 #define HAVE_STDDEF_H   1
 #endif
 
+/* Check to see if we have Windows 10 build environment */
+#if _MSC_VER >= 1911        /* Visual Studio 15.3 */
+#include <sdkddkver.h>
+#if _WIN32_WINNT >= 0x0601  /* Windows 7 */
+#define SDL_WINDOWS7_SDK
+#endif
+#if _WIN32_WINNT >= 0x0602  /* Windows 8 */
+#define SDL_WINDOWS8_SDK
+#endif
+#if _WIN32_WINNT >= 0x0A00  /* Windows 10 */
+#define SDL_WINDOWS10_SDK
+#endif
+#endif /* _MSC_VER >= 1911 */
+
 /* Enable various audio drivers */
 #define SDL_AUDIO_DRIVER_WASAPI 1
 #define SDL_AUDIO_DRIVER_DSOUND 1
@@ -203,8 +217,8 @@ typedef unsigned int uintptr_t;
 #define SDL_JOYSTICK_HIDAPI 1
 #define SDL_JOYSTICK_RAWINPUT   1
 #define SDL_JOYSTICK_VIRTUAL    1
-#if _MSC_VER >= 1911
-#define SDL_JOYSTICK_WGI    1   /* This requires Windows SDK 10.0.16299.0 or newer */
+#ifdef SDL_WINDOWS10_SDK
+#define SDL_JOYSTICK_WGI    1
 #endif
 #define SDL_JOYSTICK_XINPUT 1
 #define SDL_HAPTIC_DINPUT   1
@@ -229,7 +243,7 @@ typedef unsigned int uintptr_t;
 #ifndef SDL_VIDEO_RENDER_D3D
 #define SDL_VIDEO_RENDER_D3D    1
 #endif
-#if _MSC_VER >= 1911
+#ifdef SDL_WINDOWS7_SDK
 #define SDL_VIDEO_RENDER_D3D11  1
 #endif
 
diff --git a/src/joystick/windows/SDL_rawinputjoystick.c b/src/joystick/windows/SDL_rawinputjoystick.c
index 23b764e8f..d525c7667 100644
--- a/src/joystick/windows/SDL_rawinputjoystick.c
+++ b/src/joystick/windows/SDL_rawinputjoystick.c
@@ -44,10 +44,9 @@
 #include "../../core/windows/SDL_hid.h"
 #include "../hidapi/SDL_hidapijoystick_c.h"
 
-#ifdef __WIN32__
 #define SDL_JOYSTICK_RAWINPUT_XINPUT
-/* This requires the Windows 10 SDK to build */
-/*#define SDL_JOYSTICK_RAWINPUT_GAMING_INPUT*/
+#ifdef SDL_WINDOWS10_SDK
+#define SDL_JOYSTICK_RAWINPUT_GAMING_INPUT
 #endif
 
 #ifdef SDL_JOYSTICK_RAWINPUT_XINPUT
@@ -1232,7 +1231,23 @@ RAWINPUT_JoystickRumble(SDL_Joystick *joystick, Uint16 low_frequency_rumble, Uin
 static int
 RAWINPUT_JoystickRumbleTriggers(SDL_Joystick *joystick, Uint16 left_rumble, Uint16 right_rumble)
 {
+#if defined(SDL_JOYSTICK_RAWINPUT_GAMING_INPUT)
+    RAWINPUT_DeviceContext *ctx = joystick->hwdata;
+    
+    if (ctx->wgi_correlated) {
+        WindowsGamingInputGamepadState *gamepad_state = ctx->wgi_slot;
+        HRESULT hr;
+        gamepad_state->vibration.LeftTrigger = (DOUBLE)left_rumble / SDL_MAX_UINT16;
+        gamepad_state->vibration.RightTrigger = (DOUBLE)right_rumble / SDL_MAX_UINT16;
+        hr = __x_ABI_CWindows_CGaming_CInput_CIGamepad_put_Vibration(gamepad_state->gamepad, gamepad_state->vibration);
+        if (!SUCCEEDED(hr)) {
+            return SDL_SetError("Setting vibration failed: 0x%x\n", hr);
+        }
+    }
+    return 0;
+#else
     return SDL_Unsupported();
+#endif
 }
 
 static SDL_bool