165 lines
4.1 KiB
C++
165 lines
4.1 KiB
C++
#include "pch.h"
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#include "d3d9_proxy.h"
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// global variables
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#pragma data_seg (".d3d9_shared")
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HINSTANCE gl_hOriginalDll;
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HINSTANCE gl_hThisInstance;
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HINSTANCE gl_hL2Detect;
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#pragma data_seg ()
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FILE *g_fLog = NULL;
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BOOL WINAPI DllMain( HINSTANCE hInstDLL, DWORD reason, LPVOID lpvReserved )
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{
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lpvReserved = NULL;
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switch( reason )
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{
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case DLL_PROCESS_ATTACH:
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{
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gl_hThisInstance = hInstDLL;
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DisableThreadLibraryCalls( hInstDLL );
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D3D9Proxy_Initialize();
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} break;
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case DLL_PROCESS_DETACH:
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{
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D3D9Proxy_Uninitialize();
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} break;
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}
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return TRUE;
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}
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void D3D9Proxy_Initialize()
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{
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// init Logger
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ErrorLogger_Init();
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ErrorLogger_Enable( true );
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#ifdef _DEBUG
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ErrorLogger_EnableLoggingToConsole( true );
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#endif
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g_fLog = fopen( "D3D9Proxy.log", "wt" );
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ErrorLogger_SetLogFile( g_fLog );
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ErrorLogger_SetAutoPrependErrorType( true );
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#ifdef _DEBUG
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ErrorLogger_SetWarnMessageLevel( LOG_DEBUGDUMP );
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#else
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ErrorLogger_SetWarnMessageLevel( LOG_WARNING );
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#endif
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log_error( LOG_OK, "D3D9Proxy_Initialize() called.\n" );
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// Initialisation
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gl_hOriginalDll = NULL;
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gl_hThisInstance = NULL;
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gl_hL2Detect = NULL;
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}
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void D3D9Proxy_Uninitialize()
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{
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log_error( LOG_OK, "D3D9Proxy_Uninitialize() called.\n" );
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// Release the system's d3d9.dll
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if( gl_hOriginalDll )
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{
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::FreeLibrary( gl_hOriginalDll );
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gl_hOriginalDll = NULL;
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log_error( LOG_DEBUG, "gl_hOriginalDll (d3d9) unloaded.\n" );
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}
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// Release L2Detect DLL
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if( gl_hL2Detect )
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{
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::FreeLibrary( gl_hL2Detect );
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gl_hL2Detect = NULL;
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log_error( LOG_DEBUG, "gl_hL2Detect (L2Detect) unloaded.\n" );
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}
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// close logger
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log_error( LOG_OK, "Closing log. Last message! Bye!\n=======================\n" );
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ErrorLogger_FlushLogFile();
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ErrorLogger_Enable( false );
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#ifdef _DEBUG
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ErrorLogger_EnableLoggingToConsole( false );
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#endif
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if( g_fLog )
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{
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ErrorLogger_SetLogFile( NULL );
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fflush( g_fLog );
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fclose( g_fLog );
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g_fLog = NULL;
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}
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}
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bool D3D9Proxy_LoadL2Detect()
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{
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if( gl_hL2Detect != NULL )
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return true; // already loaded
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gl_hL2Detect = LoadLibraryW( L"L2Detect_d.dll" );
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if( gl_hL2Detect == NULL ) // first try failed
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{
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gl_hL2Detect = LoadLibraryW( L"L2Detect.dll" );
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if( gl_hL2Detect == NULL )
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{
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log_error( LOG_ERROR, "Failed to load radar DLL! Tried to find L2Detect_d / L2Detect dlls.\n" );
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return false;
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}
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else
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log_error( LOG_OK, "Loaded L2Detect.dll at 0x%08X\n", gl_hL2Detect );
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}
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else
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log_error( LOG_OK, "Loaded L2Detect_d.dll (debug version) at 0x%08X\n", gl_hL2Detect );
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return true;
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}
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void LoadOriginalDll()
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{
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wchar_t buffer[MAX_PATH];
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buffer[0] = 0;
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// Getting path to system dir and to d3d8.dll
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::GetSystemDirectory( buffer, MAX_PATH );
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// Append dll name
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wcscat( buffer, L"\\d3d9.dll" );
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// try to load the system's d3d9.dll, if pointer empty
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if( !gl_hOriginalDll ) gl_hOriginalDll = ::LoadLibrary( buffer );
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// Debug
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if( !gl_hOriginalDll )
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{
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log_error( LOG_ERROR, "LoadOriginalDll(): Original d3d9.dll not loaded!\n");
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ErrorLogger_FlushLogFile();
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::ExitProcess(0);
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}
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}
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// Exported function (faking d3d9.dll's one-and-only export)
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IDirect3D9* WINAPI Direct3DCreate9( UINT SDKVersion )
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{
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if( !gl_hOriginalDll ) LoadOriginalDll(); // looking for the "right d3d9.dll"
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// Hooking IDirect3D Object from Original Library
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typedef IDirect3D9 *(WINAPI* D3D9_Type)(UINT SDKVersion);
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D3D9_Type D3DCreate9_fn = (D3D9_Type)GetProcAddress( gl_hOriginalDll, "Direct3DCreate9" );
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// Debug
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if( !D3DCreate9_fn )
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{
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log_error( LOG_ERROR, "Direct3DCreate9(): Pointer to original Direct3DCreate9 function not received!\n" );
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ErrorLogger_FlushLogFile();
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::ExitProcess(0); // exit the hard way
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}
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if( D3D9Proxy_LoadL2Detect() )
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ErrorLogger_EnableLoggingToConsole( false );
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// Request pointer from Original Dll.
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IDirect3D9 *pIDirect3D9_orig = D3DCreate9_fn( SDKVersion );
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// Return pointer to hooking Object instead of "real one"
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return pIDirect3D9_orig;
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}
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