source: trunk/tools/neercs/video/blurv.lolfx @ 1661 Tweet

-- GLSL.Vert --

#version 120

void main()
        {
        gl_Position=gl_Vertex;
        gl_TexCoord[0]=gl_MultiTexCoord0;
        }

-- GLSL.Frag --

#version 120

uniform sampler2D texture;
uniform vec2 screen_size;
uniform float blur;
uniform float deform;

const float PI=3.14159265358979323846;

void main(void)
        {
        vec4 total=vec4(0.0);
        vec2 p=gl_TexCoord[0].xy/screen_size;
        float mask=2.0-p.x*(6.0-p.x*6.0)*p.y*(6.0-p.y*6.0);
        float b=blur+deform*mask;
        total+=texture2D(texture,vec2(p.x,p.y-b*4.0))*0.04;
        total+=texture2D(texture,vec2(p.x,p.y-b*3.0))*0.08;
        total+=texture2D(texture,vec2(p.x,p.y-b*2.0))*0.12;
        total+=texture2D(texture,vec2(p.x,p.y-b    ))*0.16;
        total+=texture2D(texture,vec2(p.x,p.y      ))*0.20;
        total+=texture2D(texture,vec2(p.x,p.y+b    ))*0.16;
        total+=texture2D(texture,vec2(p.x,p.y+b*2.0))*0.12;
        total+=texture2D(texture,vec2(p.x,p.y+b*3.0))*0.08;
        total+=texture2D(texture,vec2(p.x,p.y+b*4.0))*0.04;
        gl_FragColor=total;
        }