77 lines
2.7 KiB
C
77 lines
2.7 KiB
C
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#pragma once
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#include <d3d8.h>
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#include <d3dx8.h>
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uintmax_t frame = 0;
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DWORD* GetVTable(void* addr) {
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return (DWORD*)(*(DWORD*)addr);
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}
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void Render(LPDIRECT3DDEVICE8 dev) {
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char text[MAX_PATH];
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LPD3DXFONT m_pFont;
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HFONT hFont;
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RECT Rect={0,0,0,0};
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D3DCOLOR color = D3DCOLOR_XRGB(255, 0, 0);
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hFont = CreateFont(50, 0, 0, 0, FW_BOLD, 0, 0, 0, ANSI_CHARSET, 0, 0, 0, 0, "Verdana");
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D3DXCreateFont(dev, hFont, &m_pFont);
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snprintf(text, MAX_PATH, "Frame: %d", ++frame);
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if (m_pFont) {
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m_pFont->Begin();
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m_pFont->DrawTextA(text, -1, &Rect, DT_CALCRECT, 0);
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m_pFont->DrawTextA(text, -1, &Rect, DT_LEFT, color);
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m_pFont->End();
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m_pFont->Release();
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m_pFont = nullptr;
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}
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}
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HRESULT WINAPI H_EndScene(LPDIRECT3DDEVICE8 dev) {
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typedef HRESULT(WINAPI *t_func)(LPDIRECT3DDEVICE8);
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shared_ptr<Hook> hook = Hook::get(H_EndScene);
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t_func func = reinterpret_cast<t_func>(hook->func());
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Render(dev);
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hook->disable();
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HRESULT ret = func(dev);
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hook->enable();
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return ret;
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}
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HRESULT WINAPI H_CreateDevice(void* pDirect3D, unsigned int uiAdapter, D3DDEVTYPE pDeviceType, HWND hFocusWindow,
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unsigned long ulBehaviorFlags, D3DPRESENT_PARAMETERS* pPresentationParameters,
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LPDIRECT3DDEVICE8* ppReturnedDeviceInterface) {
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typedef HRESULT(WINAPI *t_func)(void*, unsigned int, D3DDEVTYPE, HWND, unsigned long, D3DPRESENT_PARAMETERS*, LPDIRECT3DDEVICE8*);
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shared_ptr<Hook> hook = Hook::get(H_CreateDevice);
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t_func func = reinterpret_cast<t_func>(hook->func());
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hook->disable();
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HRESULT ret = func(pDirect3D, uiAdapter, pDeviceType, hFocusWindow, ulBehaviorFlags, pPresentationParameters, ppReturnedDeviceInterface);
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cout << "Ret:" << ret << endl;
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DWORD *vtable = GetVTable(ppReturnedDeviceInterface[0]);
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cout << "Dev VTable @ " << vtable << endl;
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cout << "Dev VTable[35]: " << (void*)(vtable[35]) << endl; // EndScene
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Hook::addr((void*)vtable[35], H_EndScene);
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Hook::drop(H_CreateDevice);
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return ret;
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}
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LPDIRECT3D8 WINAPI H_Direct3DCreate8(unsigned int SDKVersion) {
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typedef LPDIRECT3D8(_stdcall *t_func)(unsigned int);
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shared_ptr<Hook> hook = Hook::get(H_Direct3DCreate8);
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t_func func = reinterpret_cast<t_func>(hook->func());
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hook->disable();
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D3DPRESENT_PARAMETERS D3D_Present_Param = { 0,0,D3DFMT_UNKNOWN,0,D3DMULTISAMPLE_NONE,D3DSWAPEFFECT_DISCARD,0,1,0,D3DFMT_UNKNOWN,0,0,0 };
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LPDIRECT3D8 ret = func(SDKVersion);
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cout << "D3D8-Create: " << SDKVersion << " -> " << ret << endl;
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DWORD *vtable = GetVTable(ret);
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cout << "ID3D8 VTable @ " << vtable << endl;
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cout << "ID3D8 VTable[15]: " << (void*)(vtable[15]) << endl; // CreateDevice
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Hook::addr((void*)vtable[15], reinterpret_cast<void*>(H_CreateDevice));
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Hook::drop(H_Direct3DCreate8);
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return ret;
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}
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void hook_d3d8() {
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Hook::module("d3d8.dll","Direct3DCreate8", H_Direct3DCreate8);
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}
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