kernel vec4 slice(sampler image, sampler slices)
{
	vec2 c = samplerCoord(image);
	vec2 cr = c + vec2(1.0, 0.0);
	
	vec4 self = sample(image, c);
	vec4 right = sample(image, cr);
	
	vec2 cutCoord = vec2(c.y, 0.0);
	vec4 cut = sample(slices, cutCoord);
	
	return c.x <= cut.r ? self : right;
}