uniform sampler2D source;
uniform sampler2D bloom;
uniform vec2 offsetFactor;
uniform float darkness;

void main()
{
	vec2 textureCoordinates = gl_TexCoord[0].xy;
	vec4 color = vec4(0.0);
	color += texture2D(source, textureCoordinates - 4.0 * offsetFactor) * 0.0162162162;
	color += texture2D(source, textureCoordinates - 3.0 * offsetFactor) * 0.0540540541;
	color += texture2D(source, textureCoordinates - 2.0 * offsetFactor) * 0.1216216216;
	color += texture2D(source, textureCoordinates - offsetFactor) * 0.1945945946;
	color += texture2D(source, textureCoordinates) * 0.2270270270;
	color += texture2D(source, textureCoordinates + offsetFactor) * 0.1945945946;
	color += texture2D(source, textureCoordinates + 2.0 * offsetFactor) * 0.1216216216;
	color += texture2D(source, textureCoordinates + 3.0 * offsetFactor) * 0.0540540541;
	color += texture2D(source, textureCoordinates + 4.0 * offsetFactor) * 0.0162162162;

    vec4 sourceFragment = texture2D(source, gl_TexCoord[0].xy);
    vec4 bloomFragment = texture2D(bloom, gl_TexCoord[0].xy);
    float alpha = color.a;
    gl_FragColor = (color + sourceFragment - bloomFragment) * darkness;
    gl_FragColor.a = alpha;
}
