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hooklib/gfx.c: add dynamic DLL hook on d3d9.dll

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- Somehow doing `dll_hook_push` on `d3d9.dll` fixes the path hooks for
  Ongeki's `mu3.exe`
This commit is contained in:
Matt Bilker 2020-03-23 06:59:05 +00:00
parent 7a51533194
commit 8607faea7f
1 changed files with 37 additions and 1 deletions
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38
hooklib/gfx.c
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@ -9,10 +9,13 @@
#include "hook/table.h"
#include "hooklib/config.h"
#include "hooklib/dll.h"
#include "hooklib/gfx.h"
#include "util/dprintf.h"
typedef IDirect3D9 * (WINAPI *Direct3DCreate9_t)(UINT sdk_ver);
static HRESULT STDMETHODCALLTYPE my_CreateDevice(
IDirect3D9 *self,
UINT adapter,
@ -22,7 +25,7 @@ static HRESULT STDMETHODCALLTYPE my_CreateDevice(
D3DPRESENT_PARAMETERS *pp,
IDirect3DDevice9 **pdev);
static IDirect3D9 * WINAPI my_Direct3DCreate9(UINT sdk_ver);
static IDirect3D9 * (WINAPI *next_Direct3DCreate9)(UINT sdk_ver);
static Direct3DCreate9_t next_Direct3DCreate9;
static HRESULT gfx_frame_window(HWND hwnd);
static struct gfx_config gfx_config;
@ -37,6 +40,8 @@ static const struct hook_symbol gfx_hooks[] = {
void gfx_hook_init(const struct gfx_config *cfg)
{
HMODULE d3d9;
assert(cfg != NULL);
if (!cfg->enable) {
@ -45,6 +50,31 @@ void gfx_hook_init(const struct gfx_config *cfg)
memcpy(&gfx_config, cfg, sizeof(*cfg));
hook_table_apply(NULL, "d3d9.dll", gfx_hooks, _countof(gfx_hooks));
if (next_Direct3DCreate9 == NULL) {
d3d9 = LoadLibraryW(L"d3d9.dll");
if (d3d9 == NULL) {
dprintf("Gfx: d3d9.dll not found or failed initialization\n");
goto fail;
}
next_Direct3DCreate9 = (Direct3DCreate9_t) GetProcAddress(d3d9, "Direct3DCreate9");
if (next_Direct3DCreate9 == NULL) {
dprintf("Gfx: Direct3DCreate9 not found in loaded d3d9.dll\n");
FreeLibrary(d3d9);
goto fail;
}
}
dll_hook_push(NULL, L"d3d9.dll", gfx_hooks, _countof(gfx_hooks));
fail:
return;
}
static IDirect3D9 * WINAPI my_Direct3DCreate9(UINT sdk_ver)
@ -56,6 +86,12 @@ static IDirect3D9 * WINAPI my_Direct3DCreate9(UINT sdk_ver)
dprintf("Gfx: Direct3DCreate9 hook hit\n");
if (next_Direct3DCreate9 == NULL) {
dprintf("Gfx: next_Direct3DCreate9 == NULL\n");
goto fail;
}
api = next_Direct3DCreate9(sdk_ver);
if (api == NULL) {