Method ExportToFile

Chapter_27/Core/PixelBuffer.cpp:381–403

}

void PixelBuffer::ExportToFile( const std::wstring& FilePath )
{
    // Create the buffer.  We will release it after all is done.
    ReadbackBuffer TempBuffer;
    TempBuffer.Create(L"Temporary Readback Buffer", m_Width * m_Height, (uint32_t)BytesPerPixel(m_Format));

    CommandContext::ReadbackTexture2D(TempBuffer, *this);

    // Retrieve a CPU-visible pointer to the buffer memory.  Map the whole range for reading.
    void* Memory = TempBuffer.Map();

    // Open the file and write the header followed by the texel data.
    std::ofstream OutFile(FilePath, std::ios::out | std::ios::binary);
    OutFile.write((const char*)&m_Format, 4);
    OutFile.write((const char*)&m_Width, 4); // Pitch
    OutFile.write((const char*)&m_Width, 4);
    OutFile.write((const char*)&m_Height, 4);
    OutFile.write((const char*)Memory, TempBuffer.GetBufferSize());
    OutFile.close();

    // No values were written to the buffer, so use a null range when unmapping.
    TempBuffer.Unmap();
}