Scaling for Hanheld system - ZFEbHVUE/Batocera-CRT-Script GitHub Wiki

Scaling for Handheld System

Example GameBoy Advance using a Shader

Start a game from Emulation Station
Go into the Quick Menu with [HOTKEY] + South button or Shift+F1
Now back to the Main Menu
Settings -> Video -> Scaling -> Aspect Ratio
Set it from Core provided to Full
Now back again to the Quick Menu
Override -> Save Content Directory Override
Exit out from the emulator and go into the newly created folder named in this example to VBA-M in the folder /userdata/system/configs/retroarch/config
Edit the file gba.cfg and delete everything except these two lines:
- aspect_ratio_index = "24"
- auto_shaders_enable = "true"
Now let's make a switchres.ini override file:

From the terminal type:
cp /etc/switchres.ini /userdata/system/configs/retroarch/config/VBA-M/gba.switchres.ini

Edit the file gba.switchres.ini
Find the line:

user_mode auto
Change it to:
user_mode 320x240
You can also use super resolutions if you want a little bit crisper image.
- 320*8 = 2560
user_mode 2560x240 Also change this:
dotclock_min 0
To this:
dotclock_min 25.0

Save the file.
Start the GBA game again from Emulation Station
Go into the Quick Menu with [HOTKEY] + South button or Shift+F1
Quick Menu -> Shaders -> Load Preset

Navigate to the Pixel-art-scaling folder
Then choose the shader pixel_aa_xform.slangp or box_filter_aa_xform.slangp (more lightweight)

Go into Shader Parameters and change the following settings in this order:

Force integer scaling horizontally = (1.00)
Force integer scaling vertically = (1.00)

Go out of the Shader Parameters and save the shader setting.

Shaders -> Save Preset -> Save Content Directory Preset
The file named gba.slangp will now be saved to the directory /userdata/system/configs/retroarch/config/VBA-M
Next time you load up any GameBoy Advance game, the settings will be applied to all games.

Example Game Gear using a Shader

Game Gear is a special case since it needs to be stretched to 4:3.
The original hardware internally outputs 160x144 pixels, then horizontally stretched to 4:3 on the hardware while the internal aspect ratio is 10:9.

Start a game from Emulation Station
Go into the Quick Menu with [HOTKEY] + South button or Shift+F1
Now back to the Main Menu
Settings -> Video -> Scaling -> Aspect Ratio
Set it from Core provided to Full
Now back again to the Quick Menu
Override -> Save Content Directory Override
Exit out from the emulator and go into the newly created folder named in this example to Genesis Plus GX in the folder /userdata/system/configs/retroarch/config
Edit the file gamegear.cfg and delete everything except these two lines:
- aspect_ratio_index = "24"
- auto_shaders_enable = "true"
Now let's make a switchres.ini override file:
- From the terminal type:
  cp /etc/switchres.ini /userdata/system/configs/retroarch/config/Genesis Plus GX/gamegear.switchres.ini
Edit the file gamegear.switchres.ini
Find the line:
- user_mode auto
  Change it to:
- user_mode 320x240
- You can also use super resolutions if you want a little bit crisper image.
  - 320*8 = 2560
- user_mode 2560x240 Also change this:
- dotclock_min 0
  To this:
- dotclock_min 25.0
Save the file.
Start the GBA game again from Emulation Station
Go into the Quick Menu with [HOTKEY] + South button or Shift+F1
Quick Menu -> Shaders -> Load Preset
- Navigate to the Pixel-art-scaling folder
- Then choose the shader pixel_aa_xform.slangp or box_filter_aa_xform.slangp (more lightweight)
Go into Shader Parameters and change the following settings in this order:
- Force aspect ratio = (0.00)
- Horizontal aspect ratio = (4.00)
- Vertical aspect ratio = (3.00)
- Force integer scaling vertically = (1.00)
Go out of the Shader Parameters and save the shader setting.
- Shaders -> Save Preset -> Save Content Directory Preset
- The file named gamegear.slangp will now be saved to the directory /userdata/system/configs/retroarch/config/Genesis Plus GX
- Next time you load up any Game Gear game, the settings will be applied to all games.

Overlays in RetroArch using a Shader

Edit the file *.*.cfg and add these lines:

aspect_ratio_index = "24"
auto_shaders_enable = "true"
input_osk_overlay_opacity = "0.700000"
input_overlay = "~/configs/retroarch/overlays/borders/overlay_name.cfg"
input_overlay_enable = "true"
input_overlay_enable_autopreferred = "true"
input_overlay_opacity = "0.700000"
input_overlay_scale_landscape = "1.000000"
input_overlay_scale_portrait = "1.000000"
input_overlay_behind_menu = "true"

Overlays are in the folder /userdata/system/Batocera-CRT-Script/extra/overlays
Copy the borders folder to /userdata/system/configs/retroarch/overlays/

Example GameBoy Advance - Without Using a Shader (Not Recommended)

Start a game from Emulation Station
Go into the Quick Menu with [HOTKEY] + South button or Shift+F1
Now back to the Main Menu
Settings -> Video -> Scaling -> Aspect Ratio
Set it from Core provided to custom
Now back again to the Quick Menu
Override -> Save Content Directory Override
Exit out from the emulator and go into the newly created folder named in this example to VBA-M in the folder /userdata/system/configs/retroarch/config
Edit the file gba.cfg and delete everything except this line:
- aspect_ratio_index = "23" Then add these 4 lines:
- menu_linear_filter = "true"
- custom_viewport_height = "160"
- custom_viewport_width = "240"
- video_scale_integer = "true"
Now let's make a switchres.ini override file:
- From the terminal type:
  cp /etc/switchres.ini /userdata/system/configs/retroarch/config/VBA-M/gba.switchres.ini
Edit the file gba.switchres.ini
Find the line:
- user_mode auto
  Change it to:
- user_mode 320x240
- You can also use super resolutions if you want a little bit crisper image.
  - 320*8 = 2560
- user_mode 2560x240 Also change this:
- dotclock_min 0
  To this:
- dotclock_min 25.0
- Next time you load up any GameBoy Advance game, the settings will be applied to all games.