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veeenu/vtable_lookup.cpp

Created August 19, 2019 18:19
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DXGI vtable lookup
Raw
vtable_lookup.cpp
LPVOID swapchain_present_vtable_lookup() {
// Credits: https://www.unknowncheats.me/forum/d3d-tutorials-and-source/88369-universal-d3d11-hook.html
D3D_FEATURE_LEVEL featureLevel = D3D_FEATURE_LEVEL_11_0;
ID3D11Device *pDevice = nullptr;
ID3D11DeviceContext *pContext = nullptr;
IDXGISwapChain* pSwapChain = nullptr;
DXGI_SWAP_CHAIN_DESC swapChainDesc;
ZeroMemory(&swapChainDesc, sizeof(swapChainDesc));
swapChainDesc.BufferCount = 1;
swapChainDesc.BufferDesc.Format = DXGI_FORMAT_R8G8B8A8_UNORM;
swapChainDesc.BufferUsage = DXGI_USAGE_RENDER_TARGET_OUTPUT;
swapChainDesc.OutputWindow = GetForegroundWindow();
swapChainDesc.SampleDesc.Count = 1;
swapChainDesc.Windowed = TRUE;
swapChainDesc.BufferDesc.ScanlineOrdering = DXGI_MODE_SCANLINE_ORDER_UNSPECIFIED;
swapChainDesc.BufferDesc.Scaling = DXGI_MODE_SCALING_UNSPECIFIED;
swapChainDesc.SwapEffect = DXGI_SWAP_EFFECT_DISCARD;
if (FAILED(D3D11CreateDeviceAndSwapChain(
NULL, D3D_DRIVER_TYPE_HARDWARE, NULL, NULL, &featureLevel, 1,
D3D11_SDK_VERSION, &swapChainDesc, &pSwapChain, &pDevice, NULL, &pContext))) {
std::cout << "D3D11CreateDeviceAndSwapChain failed" << std::endl;
return nullptr;
}
DWORD_PTR* pSwapChainVtable;
pSwapChainVtable = (DWORD_PTR*)pSwapChain;
pSwapChainVtable = (DWORD_PTR*)pSwapChainVtable[0];
LPVOID ret = reinterpret_cast<LPVOID>(pSwapChainVtable[8]);
pDevice->Release();
pContext->Release();
pSwapChain->Release();
return ret;
}
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