source: trunk/neercs/video/blurh.lolfx @ 1456 Tweet

-- GLSL.Vert --

#version 120

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

-- GLSL.Frag --

#version 120

uniform sampler2D texture;
uniform float screen_w;
uniform float screen_h;
uniform float time;
uniform float value;

float blur=value;

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