| Option Category | # # DIRECT3D POST-PROCESSING OPTIONS # |
| Description | This option biases the red, green and blue colour channels by the values that you set. These are converted into a 3x3 matrix and applied to the red channel. |
| Full Command | -red_ratio <float>,<float>,<float> |
| Alt. Command | none |
| Reverse Command | none |
| Example | mame64 pacman -hlsl_enable -red_ratio 1.0,0.5,0.0 |
| mame.ini Command | red_ratio |
| Command Default | 0.0,0.0,0.0 |
| Argument Format | <float>,<float>,<float> |