shader_type canvas_item;

uniform sampler2D text_left;
uniform vec4 left_color : hint_color;

uniform sampler2D text_right;
uniform vec4 right_color : hint_color;

bool approx_eq(vec4 c1, vec4 c2) { return all( lessThan( abs( c1 - c2 ), vec4( 0.001, 0.001, 0.001, 0.001) ) ); }

void fragment(){
    vec4 color2;

    vec4 color = texture(TEXTURE, UV);

    COLOR = texture(TEXTURE, UV); //read from texture



    if (approx_eq(color, right_color))
    {
        color2 = texture(text_right, UV);
        COLOR = color2;
    }

    else if (approx_eq(color, left_color))
    {
        color2 = texture(text_left, UV);
        COLOR = color2;
    }
}