| Option Category | # # DIRECT3D POST-PROCESSING OPTIONS # |
| Description | This option sets the spacing of the scanlines drawn by the HLSL renderer. 1.0 sets the standard alternate spacing and changing it will increase/decrease the amount of scanlines drawn |
| Full Command | -scanline_size <float> |
| Alt. Command | none |
| Reverse Command | none |
| Example | mame64 pacman -hlsl_enable -scanline_size 0.5 |
| mame.ini Command | scanline_size |
| Command Default | 1.0 |
| Argument Format | <float> |