Shadow Masks for MiSTer FPGA

This repository contains the Shadow Mask files for the MiSTer FPGA.

Instructions

Create a folder named Shadow_Masks in the root of your MicroSD Card along with the other folders like "filters", "games", etc... Place the .txt Shadow Mask files into that folder.

Color Palette

Color	Value	Bits
Gray	0	000
Blue	1	001
Green	2	010
Cyan	3	011
Red	4	100
Magenta	5	101
Yellow	6	110
White	7	111

Max width = 8
Max Height = 8

How It Works

Here's an example. If you wanted to make RGB dots that use this pattern:

Then you would make a file like this:

# w,h
6,4

# lut
4,4,2,2,1,1
4,4,2,2,1,1
2,1,1,4,4,2
2,1,1,4,4,2

These numbers correspond to the following r, g, b values like this:

r,r,g,g,b,b
r,r,g,g,b,b
g,b,b,r,r,g
g,b,b,r,r,g

Create Your Own

With the tool found here: MiSTer - Shadow Mask Editor

Tool provided by Tonurics