| Option Category | # # DIRECT3D POST-PROCESSING OPTIONS # |
| Description | This option blurs each pixel on the screen, simulating a poorly maintained monitor. The numbers entered are for X and Y values separated by a comma (,) |
| Full Command | -defocus <float>,<float> |
| Alt. Command | none |
| Reverse Command | none |
| Example | mame64 pacman -hlsl_enable -defocus 1.5,1.5 |
| mame.ini Command | defocus |
| Command Default | 0.0,0.0 |
| Argument Format | <float>,<float> |