#version 410


uniform sampler2D texture1;
uniform vec2 imageSize = vec2(1024, 1024); // the pixel size of the image.
in vec2 uvV;

out vec4 fragColor;

uniform float weight[5] = float[](
                                  0.2270270270,
                                  0.1945945946,
                                  0.1216216216,
                                  0.0540540541,
                                  0.0162162162
                                  );
void main(void)
{
    fragColor = texture(texture1, uvV) * weight[0];
    for (int i = 1; i < 5; i++)
    {
        vec2 bump = vec2(float(i) / imageSize.x, 0);
        fragColor += texture(texture1, uvV + bump) * weight[i];
        fragColor += texture(texture1, uvV - bump) * weight[i];
    }
}