#pragma header

// shader used in GitHub credits

void main() {
	float len = length(openfl_TextureCoordv - vec2(0.5, 0.5));
	float r = 0.5 - (1.0 / openfl_TextureSize.x);
	vec4 c = flixel_texture2D(bitmap, openfl_TextureCoordv);
	vec4 color = mix(vec4(0, 0, 0, 0.5), c, c.a);
	gl_FragColor = color * clamp(1 - ((len - r) * openfl_TextureSize.x), 0, 1);
}