Changes
Jump to navigation
Jump to search
→Emulation issues
==Emulation issues==
===Oversaturation===
The original GBA screen was not backlit, which would render the screen rather dark. To compensate for this, games would be overly saturated. The bright overly saturated colors would appear rather normal on the GBA. In emulation however, this over saturation is not needed. There are several ways to deal with this:
'''No$GBA'''
Under "Emulation Options", select "GBA Mode. There are four modes.
- GBA (no backlight) = strong desaturization
- GBA SP (backlight) = strong desaturization
- Nintendo DS in GBA mode = some desaturization
- VGA Mode (poppy bright): zero desaturization
'''VBA-M'''
???
'''Shaders'''
[http://www.mediafire.com/download/2ff988cmin89cr7/gba+real+colors.cg gba+real+colors.cg]
A .cg shader can be loaded in [[OpenEMU]] or [[RetroArch]]. The settings can be modified by opening up the file in something like Notepad++.
saturation = 0.5;
gamma = 0.9;
luminance = 0.9;
===Save file issues===
There are a number of different save formats for GBA games. With raw save data, it's very hard to detect what save type it is just by looking at it. Visual Boy Advance tries to autodetect save type but often is incorrect and this causes issues. A fix to this issue is to use a file called "vba-over.ini" to tell VBA what each game's proper save type is, which eliminates most issues regarding save type. Current VBA-M versions come with vba-over.ini by default, but older versions of VBA like VBA 1.7.2 and VBALink did not.
