Game Engine Architecture 9

佚名 6年前 (2019-04-08) 随笔 1499人围观抢沙发百度已收录

【Game Engine Architecture 9】

1、Formatted Output with OutputDebugString()

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int VDebugPrintF(const char* format, va_list argList)
{
    const U32 MAX_CHARS = 1024;
    static char s_buffer[MAX_CHARS];
    
    int charsWritten
    = vsnprintf(s_buffer, MAX_CHARS, format, argList);
    
    // Now that we have a formatted string, call the
    // Win32 API.
    OutputDebugString(s_buffer);
    
    return charsWritten;
}

int DebugPrintF(const char* format, ...)
{
    va_list argList;
    va_start(argList, format);
    
    int charsWritten = VDebugPrintF(format, argList);
    
    va_end(argList);
    return charsWritten;
}

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　　It’s impossible to pass ellipses from one function to another, but it is possible to pass va_lists around.

2、Mirroring Output to a File

　　You may want to consider flushing your log file(s) after every call to your debug output function to ensure that if the game crashes, the log file(s) won’t be missing the last buffer-full of output. The last data printed are usually the most useful for determining the cause of a crash, so we want to be sure that the log file always contains the most up-to-date output.

3、Debug Drawing API