uniform float agk_time;
uniform vec2 agk_resolution;

uniform sampler2D texture0;
varying vec2 uvVarying;

vec2 PixelOffsets [ 13 ];
float BlurWeights [ 13 ];

#ifdef GL_ES
	#ifdef GL_FRAGMENT_PRECISION_HIGH
		precision highp float;
	#else
		precision mediump float;
	#endif
#endif

void main()
{
	float v_weight = 20.0 * (0.5-uvVarying.y) * (0.5-uvVarying.y);

    PixelOffsets[ 0 ] = vec2( -6, 0 ) * v_weight;
    PixelOffsets[ 1 ] = vec2( -5, 0 ) * v_weight;
    PixelOffsets[ 2 ] = vec2( -4, 0 ) * v_weight;
    PixelOffsets[ 3 ] = vec2( -3, 0 ) * v_weight;
    PixelOffsets[ 4 ] = vec2( -2, 0 ) * v_weight;
    PixelOffsets[ 5 ] = vec2( -1, 0 ) * v_weight;
    PixelOffsets[ 6 ] = vec2(  0, 0 ) * v_weight;
    PixelOffsets[ 7 ] = vec2(  1, 0 ) * v_weight;
    PixelOffsets[ 8 ] = vec2(  2, 0 ) * v_weight;
    PixelOffsets[ 9 ] = vec2(  3, 0 ) * v_weight;
    PixelOffsets[ 10 ] = vec2(  4, 0 ) * v_weight;
    PixelOffsets[ 11 ] = vec2(  5, 0 ) * v_weight;
    PixelOffsets[ 12 ] = vec2(  6, 0 ) * v_weight;
		
    BlurWeights [ 0 ] = 0.002216;
    BlurWeights [ 1 ] = 0.008764;
    BlurWeights [ 2 ] = 0.026995;
    BlurWeights [ 3 ] = 0.064759;
    BlurWeights [ 4 ] = 0.120985;
    BlurWeights [ 5 ] = 0.176033;
    BlurWeights [ 6 ] = 0.200496;
    BlurWeights [ 7 ] = 0.176033;
    BlurWeights [ 8 ] = 0.120985;
    BlurWeights [ 9 ] = 0.064759;
    BlurWeights [ 10 ] = 0.026995;
    BlurWeights [ 11 ] = 0.008764;
    BlurWeights [ 12 ] = 0.002216;

    vec2 scale = 1.0/agk_resolution.xy;
    vec4 color = vec4(0,0,0,0);

    for (int i = 0; i < 13; i++) {   
		//convert pixel offsets into texel offsets via the inverse view values. 
		color += texture2D( texture0, uvVarying + PixelOffsets[i].xy*scale ) * BlurWeights[i];
    }

    gl_FragColor = color;
}