shader_type canvas_item;

uniform bool useTexture = false;
uniform float progress = 0;
uniform vec3 color;
uniform sampler2D tex;

void fragment() {
	if (distance(UV, vec2(0.5, 0.5)) > 0.8 - progress){
		COLOR = vec4(color, 1.0);
		if (useTexture){
			COLOR = texture(tex, UV);
		}
	}else{
		COLOR.a = 0.0;
	}
}