| Option Category | # # DIRECT3D POST-PROCESSING OPTIONS # |
| Description | This option sets the strength of quadratic screen distortion used by the HLSL renderer. This is entered as a percentage of 1.0 with the minimum of 0.0. |
| Full Command | -distortion <float> |
| Alt. Command | none |
| Reverse Command | none |
| Example | mame64 pacman -hlsl_enable -distortion 0.2 |
| mame.ini Command | distortion |
| Command Default | 0.0 |
| Argument Format | <float> |