f02342ac0c
Before, game capture would find addresses to important graphics functions by creating a graphics context for the desired API inside of the hook, and then find the function addresses that way. The big problem with that is that the context could often cause the hooked application to crash, especially if another hook was active. This bypasses that entire need by a simple console application that creates the contexts, finds the hook address offsets and then returns them via console output.
87 lines
1.9 KiB
C++
87 lines
1.9 KiB
C++
#define _CRT_SECURE_NO_WARNINGS
|
|
#include <windows.h>
|
|
#include <d3d10.h>
|
|
#include <dxgi.h>
|
|
#include "get-graphics-offsets.h"
|
|
|
|
typedef HRESULT (WINAPI *d3d10create_t)(IDXGIAdapter*, D3D10_DRIVER_TYPE,
|
|
HMODULE, UINT, UINT, DXGI_SWAP_CHAIN_DESC*,
|
|
IDXGISwapChain**, IUnknown**);
|
|
|
|
struct dxgi_info {
|
|
HMODULE module;
|
|
HWND hwnd;
|
|
IDXGISwapChain *swap;
|
|
};
|
|
|
|
static inline bool dxgi_init(dxgi_info &info)
|
|
{
|
|
HMODULE d3d10_module;
|
|
d3d10create_t create;
|
|
IUnknown *device;
|
|
HRESULT hr;
|
|
|
|
info.hwnd = CreateWindowExA(0, DUMMY_WNDCLASS, "d3d10 get-offset window",
|
|
WS_POPUP, 0, 0, 2, 2, nullptr, nullptr,
|
|
GetModuleHandleA(nullptr), nullptr);
|
|
if (!info.hwnd) {
|
|
return false;
|
|
}
|
|
|
|
info.module = LoadLibraryA("dxgi.dll");
|
|
if (!info.module) {
|
|
return false;
|
|
}
|
|
|
|
d3d10_module = LoadLibraryA("d3d10.dll");
|
|
if (!d3d10_module) {
|
|
return false;
|
|
}
|
|
|
|
create = (d3d10create_t)GetProcAddress(d3d10_module,
|
|
"D3D10CreateDeviceAndSwapChain");
|
|
if (!create) {
|
|
return false;
|
|
}
|
|
|
|
DXGI_SWAP_CHAIN_DESC desc = {};
|
|
desc.BufferCount = 2;
|
|
desc.BufferDesc.Format = DXGI_FORMAT_R8G8B8A8_UNORM;
|
|
desc.BufferDesc.Width = 2;
|
|
desc.BufferDesc.Height = 2;
|
|
desc.BufferUsage = DXGI_USAGE_RENDER_TARGET_OUTPUT;
|
|
desc.OutputWindow = info.hwnd;
|
|
desc.SampleDesc.Count = 1;
|
|
desc.Windowed = true;
|
|
|
|
hr = create(nullptr, D3D10_DRIVER_TYPE_NULL, nullptr, 0,
|
|
D3D10_SDK_VERSION, &desc, &info.swap, &device);
|
|
if (FAILED(hr)) {
|
|
return false;
|
|
}
|
|
|
|
device->Release();
|
|
return true;
|
|
}
|
|
|
|
static inline void dxgi_free(dxgi_info &info)
|
|
{
|
|
if (info.swap)
|
|
info.swap->Release();
|
|
if (info.hwnd)
|
|
DestroyWindow(info.hwnd);
|
|
}
|
|
|
|
void get_dxgi_offsets(struct dxgi_offsets *offsets)
|
|
{
|
|
dxgi_info info = {};
|
|
bool success = dxgi_init(info);
|
|
|
|
if (success) {
|
|
offsets->present = vtable_offset(info.module, info.swap, 8);
|
|
offsets->resize = vtable_offset(info.module, info.swap, 13);
|
|
}
|
|
|
|
dxgi_free(info);
|
|
}
|