mirror of
https://github.com/photonstorm/phaser
synced 2024-11-30 08:31:01 +00:00
54 lines
1.8 KiB
JavaScript
54 lines
1.8 KiB
JavaScript
/**
|
|
* A vertical blur filter by Mat Groves http://matgroves.com/ @Doormat23
|
|
*/
|
|
Phaser.Filter.BlurY = function (game) {
|
|
|
|
Phaser.Filter.call(this, game);
|
|
|
|
this.uniforms.blur = { type: '1f', value: 1 / 512 };
|
|
|
|
this.fragmentSrc = [
|
|
|
|
"precision mediump float;",
|
|
"varying vec2 vTextureCoord;",
|
|
"varying vec4 vColor;",
|
|
"uniform float blur;",
|
|
"uniform sampler2D uSampler;",
|
|
|
|
"void main(void) {",
|
|
|
|
"vec4 sum = vec4(0.0);",
|
|
|
|
"sum += texture2D(uSampler, vec2(vTextureCoord.x, vTextureCoord.y - 4.0*blur)) * 0.05;",
|
|
"sum += texture2D(uSampler, vec2(vTextureCoord.x, vTextureCoord.y - 3.0*blur)) * 0.09;",
|
|
"sum += texture2D(uSampler, vec2(vTextureCoord.x, vTextureCoord.y - 2.0*blur)) * 0.12;",
|
|
"sum += texture2D(uSampler, vec2(vTextureCoord.x, vTextureCoord.y - blur)) * 0.15;",
|
|
"sum += texture2D(uSampler, vec2(vTextureCoord.x, vTextureCoord.y)) * 0.16;",
|
|
"sum += texture2D(uSampler, vec2(vTextureCoord.x, vTextureCoord.y + blur)) * 0.15;",
|
|
"sum += texture2D(uSampler, vec2(vTextureCoord.x, vTextureCoord.y + 2.0*blur)) * 0.12;",
|
|
"sum += texture2D(uSampler, vec2(vTextureCoord.x, vTextureCoord.y + 3.0*blur)) * 0.09;",
|
|
"sum += texture2D(uSampler, vec2(vTextureCoord.x, vTextureCoord.y + 4.0*blur)) * 0.05;",
|
|
|
|
"gl_FragColor = sum;",
|
|
|
|
"}"
|
|
|
|
];
|
|
|
|
};
|
|
|
|
Phaser.Filter.BlurY.prototype = Object.create(Phaser.Filter.prototype);
|
|
Phaser.Filter.BlurY.prototype.constructor = Phaser.Filter.BlurY;
|
|
|
|
Object.defineProperty(Phaser.Filter.BlurY.prototype, 'blur', {
|
|
|
|
get: function() {
|
|
return this.uniforms.blur.value / (1/7000);
|
|
},
|
|
|
|
set: function(value) {
|
|
this.dirty = true;
|
|
this.uniforms.blur.value = (1/7000) * value;
|
|
}
|
|
|
|
});
|