mirror of
https://github.com/photonstorm/phaser
synced 2024-12-12 06:12:53 +00:00
50 lines
1.2 KiB
JavaScript
50 lines
1.2 KiB
JavaScript
/**
|
|
* @author Mat Groves http://matgroves.com/ @Doormat23
|
|
*/
|
|
|
|
/**
|
|
* This turns your displayObjects to grayscale.
|
|
* @class Gray
|
|
* @contructor
|
|
*/
|
|
Phaser.Filter.Gray = function (game) {
|
|
|
|
Phaser.Filter.call(this, game);
|
|
|
|
this.uniforms.gray = { type: '1f', value: 1.0 };
|
|
|
|
this.fragmentSrc = [
|
|
|
|
"precision mediump float;",
|
|
|
|
"varying vec2 vTextureCoord;",
|
|
"varying vec4 vColor;",
|
|
"uniform sampler2D uSampler;",
|
|
"uniform float gray;",
|
|
|
|
"void main(void) {",
|
|
"gl_FragColor = texture2D(uSampler, vTextureCoord);",
|
|
"gl_FragColor.rgb = mix(gl_FragColor.rgb, vec3(0.2126 * gl_FragColor.r + 0.7152 * gl_FragColor.g + 0.0722 * gl_FragColor.b), gray);",
|
|
"}"
|
|
];
|
|
|
|
};
|
|
|
|
Phaser.Filter.Gray.prototype = Object.create(Phaser.Filter.prototype);
|
|
Phaser.Filter.Gray.prototype.constructor = Phaser.Filter.Gray;
|
|
|
|
/**
|
|
* The strength of the gray. 1 will make the object black and white, 0 will make the object its normal color
|
|
* @property gray
|
|
*/
|
|
Object.defineProperty(Phaser.Filter.Gray.prototype, 'gray', {
|
|
|
|
get: function() {
|
|
return this.uniforms.gray.value;
|
|
},
|
|
|
|
set: function(value) {
|
|
this.uniforms.gray.value = value;
|
|
}
|
|
|
|
});
|