It replaces the existing Mix Frames core option with Interframe Blending. The old Accurate and Fast frame mixing settings have been renamed to Simple (Accurate) and Simple (Fast) - these perform the same 50:50 mix of the current and previous frames as before, required to achieve correct rendering of games that rely on LCD ghosting for transparency effects.
In addition to these settings, there are now LCD Ghosting (Accurate) and LCD Ghosting (Fast) options. The former recreates the LCD response effect of RetroArch's Gameboy Shader. The latter is similar, but uses a single accumulation buffer - which is more efficient, but lacks the subtlety of the shader implementation.
Here are some stats showing the typical increase in performance overheads when using the various methods:
This PR backports the LCD ghosting effects that were recently added to mGBA: https://github.com/libretro/mgba/pull/175, https://github.com/libretro/mgba/pull/176
It replaces the existing
Mix Framescore option withInterframe Blending. The oldAccurateandFastframe mixing settings have been renamed toSimple (Accurate)andSimple (Fast)- these perform the same 50:50 mix of the current and previous frames as before, required to achieve correct rendering of games that rely on LCD ghosting for transparency effects.In addition to these settings, there are now
LCD Ghosting (Accurate)andLCD Ghosting (Fast)options. The former recreates the LCD response effect of RetroArch's Gameboy Shader. The latter is similar, but uses a single accumulation buffer - which is more efficient, but lacks the subtlety of the shader implementation.Here are some stats showing the typical increase in performance overheads when using the various methods:
Simple (Accurate): 30%Simple (Fast): 13%LCD Ghosting (Accurate): 48%LCD Ghosting (Fast): 28%