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https://github.com/photonstorm/phaser
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51 lines
1.8 KiB
JavaScript
51 lines
1.8 KiB
JavaScript
/**
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* A sample demonstrating how to create new Phaser Filters.
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*/
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Phaser.Filter.SampleFilter = function (game) {
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Phaser.Filter.call(this, game);
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/**
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* By default the following uniforms are already created and available:
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*
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* uniform float time - The current number of elapsed milliseconds in the game.
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* uniform vec2 resolution - The dimensions of the filter. Can be set via setSize(width, height)
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* uniform vec2 mouse - The mouse / touch coordinates taken from the pointer given to the update function, if any.
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* uniform sampler2D uSampler - The current texture (usually the texture of the Sprite the shader is bound to)
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*
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* Add in any additional vars you require. Here is a new one called 'wobble' that is a 2f:
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*
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* this.uniforms.wobble = { type: '2f', value: { x: 0, y: 0 }};
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*
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* The supported types are: 1f, 1fv, 1i, 2f, 2fv, 2i, 2iv, 3f, 3fv, 3i, 3iv, 4f, 4fv, 4i, 4iv, mat2, mat3, mat4 and sampler2D.
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*/
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this.uniforms.divisor = { type: '1f', value: 0.5 };
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// The fragment shader source
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this.fragmentSrc = [
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"precision mediump float;",
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"uniform vec2 resolution;",
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"uniform float time;",
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"uniform float divisor;",
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"void main(void) {",
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"vec2 uv = gl_FragCoord.xy / resolution.xy;",
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"gl_FragColor = vec4(uv, divisor * sin(time), 0.0);",
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"}"
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];
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};
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Phaser.Filter.SampleFilter.prototype = Object.create(Phaser.Filter.prototype);
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Phaser.Filter.SampleFilter.prototype.constructor = Phaser.Filter.SampleFilter;
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Phaser.Filter.SampleFilter.prototype.init = function (width, height, divisor) {
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if (typeof divisor == 'undefined') { divisor = 0.5; }
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this.setResolution(width, height);
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this.uniforms.divisor.value = divisor;
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};
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