├── README.md
├── dinput8.cpp
├── dinput8.def
└── dinput8.h


/README.md:
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1 | A few games such as 'Condemend Criminal Origins', 'FEAR' and possibly others have issues with DirectInput and have been known to tank the users FPS.
2 | 


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/dinput8.cpp:
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  1 | #define CINTERFACE
  2 | #include "Minhook.h"
  3 | #include "dinput8.h"
  4 | 
  5 | #pragma comment (lib, "dxguid.lib")
  6 | 
  7 | HRESULT WINAPI dEnumDevicesA(
  8 | 	LPDIRECTINPUT8A	This,
  9 | 	DWORD dwDevType,
 10 | 	LPDIENUMDEVICESCALLBACKA lpCallback,
 11 | 	LPVOID pvRef,
 12 | 	DWORD dwFlags
 13 | )
 14 | {
 15 | 
 16 | 	if (dwDevType == 1)
 17 | 	{
 18 | 		return NULL;
 19 | 	}
 20 | 	else
 21 | 	{
 22 | 		return pEnumDevicesA(This, dwDevType, lpCallback, pvRef, dwFlags);
 23 | 	}
 24 | 
 25 | }
 26 | 
 27 | HRESULT WINAPI dEnumDevicesW(
 28 | 	LPDIRECTINPUT8W	This,
 29 | 	DWORD dwDevType,
 30 | 	LPDIENUMDEVICESCALLBACKW lpCallback,
 31 | 	LPVOID pvRef,
 32 | 	DWORD dwFlags
 33 | )
 34 | {
 35 | 
 36 | 	if (dwDevType == 1)
 37 | 	{
 38 | 		return NULL;
 39 | 	}
 40 | 	else
 41 | 	{
 42 | 		return pEnumDevicesW(This, dwDevType, lpCallback, pvRef, dwFlags);
 43 | 	}
 44 | 
 45 | }
 46 | 
 47 | HRESULT WINAPI DirectInput8Create(
 48 | 	HINSTANCE hinst,
 49 | 	DWORD dwVersion,
 50 | 	REFIID	riidltf,
 51 | 	LPVOID * ppvOut,
 52 | 	LPUNKNOWN punkOuter
 53 | ){
 54 | 
 55 | 	HRESULT ret = oDirectInput8Create(hinst, dwVersion, riidltf, ppvOut, punkOuter);
 56 | 
 57 | 	LPDIRECTINPUT8A pDICa = static_cast<LPDIRECTINPUT8A>(*ppvOut);
 58 | 	LPDIRECTINPUT8W pDICu = static_cast<LPDIRECTINPUT8W>(*ppvOut);
 59 | 
 60 | 	if (IsEqualIID(riidltf, IID_IDirectInput8A))
 61 | 	{
 62 | 		if (pDICa->lpVtbl->EnumDevices)
 63 | 		{
 64 | 			oEnumDevicesA = pDICa->lpVtbl->EnumDevices;
 65 | 
 66 | 			MH_CreateHook((DWORD_PTR*)oEnumDevicesA, dEnumDevicesA, reinterpret_cast<void**>(&pEnumDevicesA));
 67 | 			MH_EnableHook((DWORD_PTR*)oEnumDevicesA);
 68 | 		}
 69 | 	}
 70 | 	
 71 | 	if (IsEqualIID(riidltf, IID_IDirectInput8W))
 72 | 	{
 73 | 		if (pDICu->lpVtbl->EnumDevices)
 74 | 		{
 75 | 			oEnumDevicesW = pDICu->lpVtbl->EnumDevices;
 76 | 
 77 | 			MH_CreateHook((DWORD_PTR*)oEnumDevicesW, dEnumDevicesW, reinterpret_cast<void**>(&pEnumDevicesW));
 78 | 			MH_EnableHook((DWORD_PTR*)oEnumDevicesW);
 79 | 		}
 80 | 	}
 81 | 
 82 | 	return ret;
 83 | 
 84 | }
 85 | 
 86 | 
 87 | bool WINAPI DllMain(HMODULE hModule, DWORD fdwReason, LPVOID lpReserved) {
 88 | 	static HMODULE din8DLL = nullptr;
 89 | 	switch (fdwReason)
 90 | 	{
 91 | 	case DLL_PROCESS_ATTACH:
 92 | 	{
 93 | 	
 94 | 		if (MH_Initialize() != MH_OK)
 95 | 		{
 96 | 			MessageBox(NULL, ("Error"), ("Failed to Initialize MinHook"), MB_OK);
 97 | 			return 1;
 98 | 		}
 99 | 
100 | 		char path[MAX_PATH];
101 | 		GetSystemDirectory(path, MAX_PATH);
102 | 		strcat_s(path, "\\dinput8.dll");
103 | 		din8DLL = LoadLibrary(path);
104 | 
105 | 		oDirectInput8Create = (tDirectInput8Create)GetProcAddress(din8DLL, "DirectInput8Create");
106 | 
107 | 	}
108 | 	case DLL_PROCESS_DETACH:
109 | 		FreeLibrary(hModule);
110 | 		break;
111 | 	}
112 | 	return true;
113 | }
114 | 


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/dinput8.def:
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1 | EXPORTS
2 | DirectInput8Create	@1
3 | 


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/dinput8.h:
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 1 | #pragma once
 2 | #include <dinput.h>
 3 | 
 4 | typedef HRESULT(WINAPI *tDirectInput8Create)(
 5 | 	HINSTANCE				 hinst,
 6 | 	DWORD				     dwVersion,
 7 | 	REFIID					 riidltf,
 8 | 	LPVOID *			     ppvOut,
 9 | 	LPUNKNOWN				 punkOuter);
10 | 
11 | tDirectInput8Create oDirectInput8Create;
12 | 
13 | typedef HRESULT(WINAPI *tEnumDevicesA)(
14 | 	LPDIRECTINPUT8A			 This,
15 | 	DWORD					 dwDevType,
16 | 	LPDIENUMDEVICESCALLBACKA lpCallback,
17 | 	LPVOID				     pvRef,
18 | 	DWORD					 dwFlags);
19 | 
20 | tEnumDevicesA oEnumDevicesA;
21 | tEnumDevicesA pEnumDevicesA;
22 | 
23 | typedef HRESULT(WINAPI *tEnumDevicesW)(
24 | 	LPDIRECTINPUT8W			 This,
25 | 	DWORD					 dwDevType,
26 | 	LPDIENUMDEVICESCALLBACKW lpCallback,
27 | 	LPVOID				     pvRef,
28 | 	DWORD					 dwFlags);
29 | 
30 | 
31 | tEnumDevicesW oEnumDevicesW;
32 | tEnumDevicesW pEnumDevicesW;
33 | 


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