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Draft: hooklib/gfx/dxgi.c: Delegate IDXGIFactory hook selection to helper method

This commit is contained in:
Felix Anderson 2021-10-25 21:57:38 +00:00
parent 636ed0f41b
commit a24cd0a1a5
Signed by untrusted user: felix
GPG Key ID: 69ADF8AEB6C8B5D1
1 changed files with 77 additions and 63 deletions
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140
hooklib/gfx/dxgi.c
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@ -21,6 +21,8 @@ typedef HRESULT (WINAPI *CreateDXGIFactory2_t)(
REFIID riid,
void **factory);
static HRESULT hook_factory(REFIID riid, void **factory);
static HRESULT STDMETHODCALLTYPE my_IDXGIFactory_CreateSwapChain(
IDXGIFactory *self,
IUnknown *device,
@ -125,43 +127,22 @@ fail:
HRESULT WINAPI CreateDXGIFactory(REFIID riid, void **factory)
{
struct com_proxy *proxy;
IDXGIFactoryVtbl *vtbl;
IDXGIFactory *api;
HRESULT hr;
dprintf("DXGI: CreateDXGIFactory hook hit\n");
api = NULL;
hr = next_CreateDXGIFactory(riid, factory);
if (FAILED(hr)) {
dprintf("DXGI: CreateDXGIFactory returned %x\n", (int) hr);
goto fail;
return hr;
}
if (memcmp(riid, &IID_IDXGIFactory, sizeof(*riid)) == 0) {
api = *factory;
hr = com_proxy_wrap(&proxy, api, sizeof(*api->lpVtbl));
hr = hook_factory(riid, factory);
if (FAILED(hr)) {
dprintf("DXGI: com_proxy_wrap returned %x\n", (int) hr);
goto fail;
}
vtbl = proxy->vptr;
vtbl->CreateSwapChain = my_IDXGIFactory_CreateSwapChain;
*factory = proxy;
}
return hr;
fail:
if (api != NULL) {
IDXGIFactory_Release(api);
if (FAILED(hr)) {
return hr;
}
return hr;
@ -169,43 +150,22 @@ fail:
HRESULT WINAPI CreateDXGIFactory1(REFIID riid, void **factory)
{
struct com_proxy *proxy;
IDXGIFactory1 *api;
IDXGIFactory1Vtbl *vtbl;
HRESULT hr;
dprintf("DXGI: CreateDXGIFactory1 hook hit\n");
api = NULL;
hr = next_CreateDXGIFactory1(riid, factory);
if (FAILED(hr)) {
dprintf("DXGI: CreateDXGIFactory1 returned %x\n", (int) hr);
goto fail;
return hr;
}
if (memcmp(riid, &IID_IDXGIFactory1, sizeof(*riid)) == 0) {
api = *factory;
hr = com_proxy_wrap(&proxy, api, sizeof(*api->lpVtbl));
hr = hook_factory(riid, factory);
if (FAILED(hr)) {
dprintf("DXGI: com_proxy_wrap returned %x\n", (int) hr);
goto fail;
}
vtbl = proxy->vptr;
vtbl->CreateSwapChain = my_IDXGIFactory1_CreateSwapChain;
*factory = proxy;
}
return hr;
fail:
if (api != NULL) {
IDXGIFactory1_Release(api);
if (FAILED(hr)) {
return hr;
}
return hr;
@ -213,9 +173,6 @@ fail:
HRESULT WINAPI CreateDXGIFactory2(UINT flags, REFIID riid, void **factory)
{
struct com_proxy *proxy;
IDXGIFactory2 *api;
IDXGIFactory2Vtbl *vtbl;
HRESULT hr;
dprintf("DXGI: CreateDXGIFactory2 hook hit\n");
@ -226,18 +183,41 @@ HRESULT WINAPI CreateDXGIFactory2(UINT flags, REFIID riid, void **factory)
return CreateDXGIFactory1(riid, factory);
}
api = NULL;
hr = next_CreateDXGIFactory2(flags, riid, factory);
if (FAILED(hr)) {
dprintf("DXGI: CreateDXGIFactory2 returned %x\n", (int) hr);
goto fail;
return hr;
}
if (memcmp(riid, &IID_IDXGIFactory2, sizeof(*riid)) == 0) {
api = *factory;
hr = com_proxy_wrap(&proxy, api, sizeof(*api->lpVtbl));
hr = hook_factory(riid, factory);
if (FAILED(hr)) {
return hr;
}
return hr;
}
static HRESULT hook_factory(REFIID riid, void **factory)
{
struct com_proxy *proxy;
IDXGIFactory *api_0;
IDXGIFactory1 *api_1;
IDXGIFactory2 *api_2;
IDXGIFactoryVtbl *vtbl_0;
IDXGIFactory1Vtbl *vtbl_1;
IDXGIFactory2Vtbl *vtbl_2;
HRESULT hr;
api_0 = NULL;
api_1 = NULL;
api_2 = NULL;
if (memcmp(riid, &IID_IDXGIFactory, sizeof(*riid)) == 0) {
api_0 = *factory;
hr = com_proxy_wrap(&proxy, api_0, sizeof(*api_0->lpVtbl));
if (FAILED(hr)) {
dprintf("DXGI: com_proxy_wrap returned %x\n", (int) hr);
@ -245,17 +225,51 @@ HRESULT WINAPI CreateDXGIFactory2(UINT flags, REFIID riid, void **factory)
goto fail;
}
vtbl = proxy->vptr;
vtbl->CreateSwapChain = my_IDXGIFactory2_CreateSwapChain;
vtbl_0 = proxy->vptr;
vtbl_0->CreateSwapChain = my_IDXGIFactory_CreateSwapChain;
*factory = proxy;
} else if (memcmp(riid, &IID_IDXGIFactory1, sizeof(*riid)) == 0) {
api_1 = *factory;
hr = com_proxy_wrap(&proxy, api_1, sizeof(*api_1->lpVtbl));
if (FAILED(hr)) {
dprintf("DXGI: com_proxy_wrap returned %x\n", (int) hr);
goto fail;
}
vtbl_1 = proxy->vptr;
vtbl_1->CreateSwapChain = my_IDXGIFactory1_CreateSwapChain;
*factory = proxy;
} else if (memcmp(riid, &IID_IDXGIFactory2, sizeof(*riid)) == 0) {
api_2 = *factory;
hr = com_proxy_wrap(&proxy, api_2, sizeof(*api_2->lpVtbl));
if (FAILED(hr)) {
dprintf("DXGI: com_proxy_wrap returned %x\n", (int) hr);
goto fail;
}
vtbl_2 = proxy->vptr;
vtbl_2->CreateSwapChain = my_IDXGIFactory2_CreateSwapChain;
*factory = proxy;
}
return hr;
return S_OK;
fail:
if (api != NULL) {
IDXGIFactory2_Release(api);
if (api_0 != NULL) {
IDXGIFactory_Release(api_0);
}
if (api_1 != NULL) {
IDXGIFactory1_Release(api_1);
}
if (api_2 != NULL) {
IDXGIFactory2_Release(api_2);
}
return hr;