Colorblind Accessibility

This shader is originally from this reddit thread https://www.reddit.com/r/gamedev/comments/9u1y6f/adding_colorblind_accessibility_with_an/

TL;DR: You can add a colorblind accessibility to any project in minutes with simple post-process shader.

Shader code

shader_type canvas_item;

uniform int mode = 0;

void fragment() {
	vec4 px = texture(SCREEN_TEXTURE, SCREEN_UV);
	if (mode==1) { px = px.gbra; }
	if (mode==2) { px = px.brga; }
	if (mode==3) { px = px.bgra; }
	COLOR = vec4(px.rgb,1.0);
}

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