libretro / libretro/RetroArch

Request for a new filter for GameBoy core.

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feature request video filter
Dominant language
C
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Description

Hi. Could you please add new filter for a gameboy core?
I would like to have pixels on gameboy like it is implemented in picoarch here:
https://github.com/shauninman/picoarch/blob/0b4c68897600077b36ab7317c588a768251d9b70/source/scale.c#L256
Filter is called - scale3x_dmg.

It looks like this:
https://prnt.sc/GYnFjS6WujHr
https://prnt.sc/T2QqBAyq2Z9h
https://prnt.sc/74UwH1r_fNVa

Thanks a lot for your hard work!

Contributor guide

Open the contributing guide

First steps

  1. Read the whole issue, then the project's contributing guide.
  2. Comment on the issue to say you are picking it up — it saves two people doing the same work.
  3. Fork the repository and make your change on a branch.
  4. Open a pull request that references the issue number.

Research direction

Start by reading the referenced picoarch source/scale.c implementation for scale3x_dmg and inspect how RetroArch exposes and selects existing filters. Done means the new GameBoy filter is available and produces the requested pixel appearance shown in the examples; the issue names no RetroArch files or tests, so locating the integration points is part of the work.

Written by the indexing model from the issue text.

Assessment

Tech stack
c
Domain
computer-graphics
Issue type
Feature
Difficulty
4/5
Estimated time
3-5 days
Activity status
Stale
Clarity
Mostly clear
Newbie friendliness
35/100

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