Palette Filter For 3D and 2D

To add Just create a canvas layer with a sprite then attach the shader into it. The gradient should be a horizontal gradient texture, you can download one from the internet or use the gradient texture from godot. P.S.: You can get the palletes from Lospec.com

Have fun! 🙂

Shader code

shader_type canvas_item;

uniform bool flip ;
uniform sampler2D gradient : hint_black; // It can be whatever palette you want


void fragment(){ 
	vec4 col = texture(SCREEN_TEXTURE,SCREEN_UV);
	
	float lum = dot(col.rgb,vec3(0.2126,0.7152,0.0722)); // luminance
	
	
	col = texture(gradient,vec2(abs(float(flip) - lum),0));
	
	
	COLOR = col;
}