dxut.cpp

DX例子中等难度的。全是新例子。VC2003

    if( pD3D == NULL )
    {
        // If still NULL, then something went wrong
        DXUTDisplayErrorMessage( DXUTERR_NODIRECT3D );
        return DXUT_ERR( L"Direct3DCreate9", DXUTERR_NODIRECT3D );
    }

    // Reset the timer
    DXUTGetGlobalTimer()->Reset();

    GetDXUTState().SetDXUTInited( true );

    return S_OK;
}


//--------------------------------------------------------------------------------------
// Parses the command line for parameters.  See DXUTInit() for list 
//--------------------------------------------------------------------------------------
void DXUTParseCommandLine()
{
    WCHAR* strCmdLine;
    WCHAR strFlag[MAX_PATH];

    int nNumArgs;
    WCHAR** pstrArgList = CommandLineToArgvW( GetCommandLine(), &nNumArgs );
    for( int iArg=1; iArg<nNumArgs; iArg++ )
    {
        strCmdLine = pstrArgList[iArg];

        // Handle flag args
        if( *strCmdLine == L'/' || *strCmdLine == L'-' )
        {
            strCmdLine++;

            if( DXUTIsNextArg( strCmdLine, L"adapter" ) )
            {
                if( DXUTGetCmdParam( strCmdLine, strFlag ) )
                {
                    int nAdapter = _wtoi(strFlag);
                    GetDXUTState().SetOverrideAdapterOrdinal( nAdapter );
                    continue;
                }
            }

            if( DXUTIsNextArg( strCmdLine, L"windowed" ) )
            {
                GetDXUTState().SetOverrideWindowed( true );
                continue;
            }

            if( DXUTIsNextArg( strCmdLine, L"fullscreen" ) )
            {
                GetDXUTState().SetOverrideFullScreen( true );
                continue;
            }

            if( DXUTIsNextArg( strCmdLine, L"forcehal" ) )
            {
                GetDXUTState().SetOverrideForceHAL( true );
                continue;
            }

            if( DXUTIsNextArg( strCmdLine, L"forceref" ) )
            {
                GetDXUTState().SetOverrideForceREF( true );
                continue;
            }

            if( DXUTIsNextArg( strCmdLine, L"forcepurehwvp" ) )
            {
                GetDXUTState().SetOverrideForcePureHWVP( true );
                continue;
            }

            if( DXUTIsNextArg( strCmdLine, L"forcehwvp" ) )
            {
                GetDXUTState().SetOverrideForceHWVP( true );
                continue;
            }

            if( DXUTIsNextArg( strCmdLine, L"forceswvp" ) )
            {
                GetDXUTState().SetOverrideForceSWVP( true );
                continue;
            }

            if( DXUTIsNextArg( strCmdLine, L"forcevsync" ) )
            {
                if( DXUTGetCmdParam( strCmdLine, strFlag ) )
                {
                    int nOn = _wtoi(strFlag);
                    GetDXUTState().SetOverrideForceVsync( nOn );
                    continue;
                }
            }

            if( DXUTIsNextArg( strCmdLine, L"width" ) )
            {
                if( DXUTGetCmdParam( strCmdLine, strFlag ) )
                {
                    int nWidth = _wtoi(strFlag);
                    GetDXUTState().SetOverrideWidth( nWidth );
                    continue;
                }
            }

            if( DXUTIsNextArg( strCmdLine, L"height" ) )
            {
                if( DXUTGetCmdParam( strCmdLine, strFlag ) )
                {
                    int nHeight = _wtoi(strFlag);
                    GetDXUTState().SetOverrideHeight( nHeight );
                continue;
                }
            }

            if( DXUTIsNextArg( strCmdLine, L"startx" ) )
            {
                if( DXUTGetCmdParam( strCmdLine, strFlag ) )
                {
                    int nX = _wtoi(strFlag);
                    GetDXUTState().SetOverrideStartX( nX );
                    continue;
                }
            }

            if( DXUTIsNextArg( strCmdLine, L"starty" ) )
            {
                if( DXUTGetCmdParam( strCmdLine, strFlag ) )
                {
                    int nY = _wtoi(strFlag);
                    GetDXUTState().SetOverrideStartY( nY );
                    continue;
                }
            }

            if( DXUTIsNextArg( strCmdLine, L"constantframetime" ) )
            {
                float fTimePerFrame;
                if( DXUTGetCmdParam( strCmdLine, strFlag ) )
                    fTimePerFrame = (float)wcstod( strFlag, NULL );
                else
                    fTimePerFrame = 0.0333f;
                GetDXUTState().SetOverrideConstantFrameTime( true );
                GetDXUTState().SetOverrideConstantTimePerFrame( fTimePerFrame );
                DXUTSetConstantFrameTime( true, fTimePerFrame );
                continue;
            }

            if( DXUTIsNextArg( strCmdLine, L"quitafterframe" ) )
            {
                if( DXUTGetCmdParam( strCmdLine, strFlag ) )
                {
                    int nFrame = _wtoi(strFlag);
                    GetDXUTState().SetOverrideQuitAfterFrame( nFrame );
                    continue;
                }
            }

            if( DXUTIsNextArg( strCmdLine, L"noerrormsgboxes" ) )
            {
                GetDXUTState().SetShowMsgBoxOnError( false );
                continue;
            }

            if( DXUTIsNextArg( strCmdLine, L"nostats" ) )
            {
                GetDXUTState().SetNoStats( true );
                continue;
            }

            if( DXUTIsNextArg( strCmdLine, L"relaunchmce" ) )
            {
                GetDXUTState().SetOverrideRelaunchMCE( true );
                continue;
            }

            if( DXUTIsNextArg( strCmdLine, L"automation" ) )
            {
                GetDXUTState().SetAutomation( true );
                continue;
            }
        }

        // Unrecognized flag
        StringCchCopy( strFlag, 256, strCmdLine ); 
        WCHAR* strSpace = strFlag;
        while (*strSpace && (*strSpace > L' '))
            strSpace++;
        *strSpace = 0;

        DXUTOutputDebugString( L"Unrecognized flag: %s", strFlag );
        strCmdLine += wcslen(strFlag);
    }
}


//--------------------------------------------------------------------------------------
// Helper function for DXUTParseCommandLine
//--------------------------------------------------------------------------------------
bool DXUTIsNextArg( WCHAR*& strCmdLine, WCHAR* strArg )
{
    int nArgLen = (int) wcslen(strArg);
    int nCmdLen = (int) wcslen(strCmdLine);

    if( nCmdLen >= nArgLen && 
        _wcsnicmp( strCmdLine, strArg, nArgLen ) == 0 && 
        (strCmdLine[nArgLen] == 0 || strCmdLine[nArgLen] == L':') )
    {
        strCmdLine += nArgLen;
        return true;
    }

    return false;
}


//--------------------------------------------------------------------------------------
// Helper function for DXUTParseCommandLine.  Updates strCmdLine and strFlag 
//      Example: if strCmdLine=="-width:1024 -forceref"
// then after: strCmdLine==" -forceref" and strFlag=="1024"
//--------------------------------------------------------------------------------------
bool DXUTGetCmdParam( WCHAR*& strCmdLine, WCHAR* strFlag )
{
    if( *strCmdLine == L':' )
    {       
        strCmdLine++; // Skip ':'

        // Place NULL terminator in strFlag after current token
        StringCchCopy( strFlag, 256, strCmdLine );
        WCHAR* strSpace = strFlag;
        while (*strSpace && (*strSpace > L' '))
            strSpace++;
        *strSpace = 0;
    
        // Update strCmdLine
        strCmdLine += wcslen(strFlag);
        return true;
    }
    else
    {
        strFlag[0] = 0;
        return false;
    }
}


//--------------------------------------------------------------------------------------
// Creates a window with the specified window title, icon, menu, and 
// starting position.  If DXUTInit() has not already been called, it will
// call it with the default parameters.  Instead of calling this, you can 
// call DXUTSetWindow() to use an existing window.  
//--------------------------------------------------------------------------------------
HRESULT DXUTCreateWindow( const WCHAR* strWindowTitle, HINSTANCE hInstance, 
                          HICON hIcon, HMENU hMenu, int x, int y )
{
    HRESULT hr;