Core Screen Options


brightness
Description Brightness affects how bright Mame will display the system selected. It affects all colours, black and white too. Brightness will affect all parts of the screen including artwork. You can use values from 0.1 up to 2.0. Values under 1.0 will darken the image and vice-versa.
Full Command -brightness <float>
Alt. Command none
Reverse Command none
Example mame64.exe pacman -brightness 0.75
Mame.ini Command brightness
Command Default 1.0
Argument Format <float>

contrast
Description Contrast affects the amount of difference between black and white used by the screen. It affects only the systems's colours and if changed will increase / decrease brightness of the colours on the screen. Artwork and Mame's menus are not affected. You can use values from 0.1 up to 2.0. Values under 1.0 will darken the image and vice-versa.
Full Command -contrast <float>
Alt. Command none
Reverse Command none
Example mame64.exe pacman -contrast 1.25
Mame.ini Command contrast
Command Default 1.0
Argument Format <float>

gamma
Description Gamma affects the difference of colour values between black and white. Black will stay black (unlike brightness which will make black grey if increased) but the colour range will change as you change the values. For example if you increase gamma the middle value of a colour will move down giving more bright levels than dark therefore increasing the overall brightness of the screen and vice versa. This option does not affect artwork or Mame's menus. You can use values from 0.1 up to 3.0. Values under 1.0 will darken the image and vice-versa.
Full Command -gamma <float>
Alt. Command none
Reverse Command none
Example mame64.exe pacman -gamma 1.75
Mame.ini Command gamma
Command Default 1.0
Argument Format <float>

pause_brightness
Description This option sets the amount Mame will darken the screen when it is paused. You can use values from 0.1 up to 1.0.
Full Command -pause_brightness <float>
Alt. Command none
Reverse Command none
Example mame64.exe pacman -pause_brightness 0.5
Mame.ini Command pause_brightness
Command Default 0.65
Argument Format <float>

effect
Description This option lets you select a PNG base image which is alpha blended and then tiled over Mame's output screen. Often this is used to simulate the dots on a TV / Monitor screen. See the Additional Media page for more information about effect / artwork files.
Full Command -effect <file>
Alt. Command none
Reverse Command none
Example mame64.exe pacman -effect aperture.png
Mame.ini Command effect
Command Default none
Argument Format <file>