util/gfx.c: Add crude D3D9 window hook

This commit is contained in:
Tau 2018-11-08 15:58:15 -05:00
parent 851ea65609
commit 1eca0648f1
3 changed files with 111 additions and 0 deletions

105
util/gfx.c Normal file
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@ -0,0 +1,105 @@
#include <windows.h>
#include <d3d9.h>
#include <stdlib.h>
#include "hook/com-proxy.h"
#include "hook/table.h"
#include "util/dprintf.h"
static HRESULT STDMETHODCALLTYPE my_CreateDevice(
IDirect3D9 *self,
UINT adapter,
D3DDEVTYPE type,
HWND hwnd,
DWORD flags,
D3DPRESENT_PARAMETERS *pp,
IDirect3DDevice9 **pdev);
static IDirect3D9 * WINAPI my_Direct3DCreate9(UINT sdk_ver);
static IDirect3D9 * (WINAPI *next_Direct3DCreate9)(UINT sdk_ver);
static bool gfx_windowed;
static const struct hook_symbol gfx_hooks[] = {
{
.name = "Direct3DCreate9",
.patch = my_Direct3DCreate9,
.link = (void **) &next_Direct3DCreate9
},
};
void gfx_hook_init(void)
{
hook_table_apply(NULL, "d3d9.dll", gfx_hooks, _countof(gfx_hooks));
}
void gfx_set_windowed(void)
{
gfx_windowed = true;
}
static IDirect3D9 * WINAPI my_Direct3DCreate9(UINT sdk_ver)
{
struct com_proxy *proxy;
IDirect3D9Vtbl *vtbl;
IDirect3D9 *api;
HRESULT hr;
dprintf("Direct3DCreate9 hook hit\n");
api = next_Direct3DCreate9(sdk_ver);
if (api == NULL) {
dprintf("next_Direct3DCreate9 returned NULL\n");
goto fail;
}
hr = com_proxy_wrap(&proxy, api, sizeof(*api->lpVtbl));
if (FAILED(hr)) {
dprintf("com_proxy_wrap returned %x\n", (int) hr);
goto fail;
}
vtbl = proxy->vptr;
vtbl->CreateDevice = my_CreateDevice;
return (IDirect3D9 *) proxy;
fail:
if (api != NULL) {
IDirect3D9_Release(api);
}
return NULL;
}
static HRESULT STDMETHODCALLTYPE my_CreateDevice(
IDirect3D9 *self,
UINT adapter,
D3DDEVTYPE type,
HWND hwnd,
DWORD flags,
D3DPRESENT_PARAMETERS *pp,
IDirect3DDevice9 **pdev)
{
struct com_proxy *proxy;
IDirect3D9 *real;
dprintf("IDirect3D9::CreateDevice hook hit\n");
proxy = com_proxy_downcast(self);
real = proxy->real;
if (gfx_windowed) {
pp->Windowed = TRUE;
pp->FullScreen_RefreshRateInHz = 0;
}
return IDirect3D9_CreateDevice(real, adapter, type, hwnd, flags, pp, pdev);
}

4
util/gfx.h Normal file
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#pragma once
void gfx_hook_init(void);
void gfx_set_windowed(void);

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@ -15,6 +15,8 @@ util_lib = static_library(
'dprintf.h',
'dump.c',
'dump.h',
'gfx.c',
'gfx.h',
'setupapi.c',
'setupapi.h',
],