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| 1 | +/** |
| 2 | +* A horizontal blur filter by Mat Groves http://matgroves.com/ @Doormat23 |
| 3 | +*/ |
| 4 | +Phaser.Filter.BlurX = function (game) { |
| 5 | + |
| 6 | + Phaser.Filter.call(this, game); |
| 7 | + |
| 8 | + this.uniforms.blur = { type: '1f', value: 1 / 512 }; |
| 9 | + |
| 10 | + this.fragmentSrc = [ |
| 11 | + |
| 12 | + "precision mediump float;", |
| 13 | + "varying vec2 vTextureCoord;", |
| 14 | + "varying float vColor;", |
| 15 | + "uniform float blur;", |
| 16 | + "uniform sampler2D uSampler;", |
| 17 | + |
| 18 | + "void main(void) {", |
| 19 | + "vec4 sum = vec4(0.0);", |
| 20 | + |
| 21 | + "sum += texture2D(uSampler, vec2(vTextureCoord.x - 4.0*blur, vTextureCoord.y)) * 0.05;", |
| 22 | + "sum += texture2D(uSampler, vec2(vTextureCoord.x - 3.0*blur, vTextureCoord.y)) * 0.09;", |
| 23 | + "sum += texture2D(uSampler, vec2(vTextureCoord.x - 2.0*blur, vTextureCoord.y)) * 0.12;", |
| 24 | + "sum += texture2D(uSampler, vec2(vTextureCoord.x - blur, vTextureCoord.y)) * 0.15;", |
| 25 | + "sum += texture2D(uSampler, vec2(vTextureCoord.x, vTextureCoord.y)) * 0.16;", |
| 26 | + "sum += texture2D(uSampler, vec2(vTextureCoord.x + blur, vTextureCoord.y)) * 0.15;", |
| 27 | + "sum += texture2D(uSampler, vec2(vTextureCoord.x + 2.0*blur, vTextureCoord.y)) * 0.12;", |
| 28 | + "sum += texture2D(uSampler, vec2(vTextureCoord.x + 3.0*blur, vTextureCoord.y)) * 0.09;", |
| 29 | + "sum += texture2D(uSampler, vec2(vTextureCoord.x + 4.0*blur, vTextureCoord.y)) * 0.05;", |
| 30 | + |
| 31 | + "gl_FragColor = sum;", |
| 32 | + |
| 33 | + "}" |
| 34 | + ]; |
| 35 | + |
| 36 | +}; |
| 37 | + |
| 38 | +Phaser.Filter.BlurX.prototype = Object.create(Phaser.Filter.prototype); |
| 39 | +Phaser.Filter.BlurX.prototype.constructor = Phaser.Filter.BlurX; |
| 40 | + |
| 41 | +Object.defineProperty(Phaser.Filter.BlurX.prototype, 'blur', { |
| 42 | + |
| 43 | + get: function() { |
| 44 | + return this.uniforms.blur.value / (1/7000); |
| 45 | + }, |
| 46 | + |
| 47 | + set: function(value) { |
| 48 | + this.uniforms.blur.value = (1/7000) * value; |
| 49 | + } |
| 50 | + |
| 51 | +}); |
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