#version 150 core

uniform sampler2D diffuseTex;
uniform vec2      pixelSize;
uniform int       isVertical;

in Vertical {
	vec2 texCoord;
	vec4 colour;
} IN;

out vec4 fragColor;

const float weights[5] = float[](0.12, 0.22, 0.32, 0.22, 0.12);

void main (void) {
	vec2 values[5];

	fragColor = vec4(0, 0, 0, 1);
	
	   if(isVertical  == 1) {
        values = vec2 []( vec2(0.0,- pixelSize.y*3),
            vec2(0.0,- pixelSize.y*2), vec2 (0.0, pixelSize.y),
            vec2 (0.0, pixelSize.y*2) , vec2 (0.0, pixelSize.y*3) );
     }
     else{
       values = vec2 []( vec2(-pixelSize.x*3, 0.0),
            vec2(-pixelSize.x*2, 0.0), vec2(pixelSize.x, 0.0),
            vec2(pixelSize.x*2 ,0.0)   ,vec2(pixelSize.x*3 ,0.0) );
     }

     for(int i = 0; i < 5; i++ )   {
        vec4 tmp = texture(diffuseTex , IN.texCoord.xy + values[i]);
        fragColor  += tmp * weights[i];
     }
 }