shader_type spatial;

uniform sampler2D tex_main : source_color;
uniform bool is_shine;

void fragment() {
	vec4 col = texture(tex_main, UV);
    float shine = 1.0;
    if(is_shine){
        shine += texture(tex_main, UV).r * (2.0 + sin(TIME*2.0));
    }
	ALBEDO = COLOR.rgb * col.r;
	ALPHA = COLOR.a * col.r;
    EMISSION = COLOR.rgb * shine;
}