#ifdef GL_ES
#define LOWP lowp
precision mediump float;
#else
#define LOWP
#endif

varying LOWP vec4 vColor;
varying vec2 vTexCoord;

uniform sampler2D u_texture;

void main() {
	vec4 sum = vec4(0);
	vec2 texcoord = vTexCoord;
	int j;
	int i;

	for (i = -4; i < 4; i++) {
		for (j = -3; j < 3; j++) {
			sum += texture2D(u_texture, texcoord + vec2(j, i)*0.004) * 0.25;
		}
	}
	if (texture2D(u_texture, texcoord).r * vColor.r < 0.3) {
		gl_FragColor = vec4(sum * sum * 0.012 + texture2D(u_texture, texcoord))
				* vColor;
	} else {
		if (texture2D(u_texture, texcoord).r * vColor.r < 0.5) {
			gl_FragColor = vec4(
					sum * sum * 0.009 + texture2D(u_texture, texcoord))
					* vColor;
		} else {
			gl_FragColor = vec4(
					sum * sum * 0.0075 + texture2D(u_texture, texcoord))
					* vColor;
		}
	}
}