added buffer visualization
added buffer visualization

chriz2600/DreamcastHDMI,chriz2600/DreamcastHDMI,chriz2600/DreamcastHDMI,chriz2600/DreamcastHDMI,chriz2600/DreamcastHDMI,chriz2600/DreamcastHDMI,chriz2600/DreamcastHDMI,chriz2600/DreamcastHDMI