phaser/src/renderer/webgl/shaders/FilterBlurMed-frag.js

A fast, free and fun HTML5 Game Framework for Desktop and Mobile web browsers from the team at Phaser Studio Inc.

module.exports = [
    '#pragma phaserTemplate(shaderName)',
    'precision mediump float;',
    'uniform sampler2D uMainSampler;',
    'uniform vec2 resolution;',
    'uniform vec2 offset;',
    'uniform float strength;',
    'uniform vec3 color;',
    'varying vec2 outTexCoord;',
    '#pragma phaserTemplate(fragmentHeader)',
    'void main ()',
    '{',
    '    vec2 uv = outTexCoord;',
    '    vec4 col = vec4(0.0);',
    '    vec2 off1 = vec2(1.3846153846) * offset * strength;',
    '    vec2 off2 = vec2(3.2307692308) * offset * strength;',
    '    col += boundedSampler(uMainSampler, uv) * 0.2270270270;',
    '    col += boundedSampler(uMainSampler, uv + (off1 / resolution)) * 0.3162162162;',
    '    col += boundedSampler(uMainSampler, uv - (off1 / resolution)) * 0.3162162162;',
    '    col += boundedSampler(uMainSampler, uv + (off2 / resolution)) * 0.0702702703;',
    '    col += boundedSampler(uMainSampler, uv - (off2 / resolution)) * 0.0702702703;',
    '    gl_FragColor = col * vec4(color, 1.0);',
    '}',
].join('\n');