neercs/neercs/video/blurh.lolfx

[vert.glsl]

#version 120

attribute vec4 in_Position;
varying vec2 pass_TexCoord;

void main()
{
    gl_Position = in_Position;
    pass_TexCoord = vec2(0.5, 0.5) + 0.5 * in_Position.xy;
}

[frag.glsl]

#version 120

varying vec2 pass_TexCoord;

uniform sampler2D texture;
uniform vec2 radius;

void main(void)
{
    vec4 total = vec4(0.0);
    vec2 p = pass_TexCoord;
    float mask = 2.0-p.x*(6.0-p.x*6.0)*p.y*(6.0-p.y*6.0);
    float b = radius.x+radius.y*mask;
    total += texture2D(texture,vec2(p.x-b*4.0,p.y))*0.04;
    total += texture2D(texture,vec2(p.x-b*3.0,p.y))*0.08;
    total += texture2D(texture,vec2(p.x-b*2.0,p.y))*0.12;
    total += texture2D(texture,vec2(p.x-b    ,p.y))*0.16;
    total += texture2D(texture,vec2(p.x      ,p.y))*0.20;
    total += texture2D(texture,vec2(p.x+b    ,p.y))*0.16;
    total += texture2D(texture,vec2(p.x+b*2.0,p.y))*0.12;
    total += texture2D(texture,vec2(p.x+b*3.0,p.y))*0.08;
    total += texture2D(texture,vec2(p.x+b*4.0,p.y))*0.04;
    gl_FragColor = total;
}