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Florian Rival
74 lines
2.9 KiB
JavaScript
74 lines
2.9 KiB
JavaScript
// A simple PIXI filter doing some color changes
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PIXI.DummyPixiFilter = function() {
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var vertexShader = null;
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var fragmentShader = [
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'precision mediump float;',
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'',
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'varying vec2 vTextureCoord;',
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'uniform sampler2D uSampler;',
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'uniform float opacity;',
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'',
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'void main(void)',
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'{',
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' mat3 nightMatrix = mat3(0.6, 0, 0, 0, 0.7, 0, 0, 0, 1.3);',
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' gl_FragColor = texture2D(uSampler, vTextureCoord);',
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' gl_FragColor.rgb = mix(gl_FragColor.rgb, nightMatrix * gl_FragColor.rgb, opacity);',
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'}',
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].join('\n');
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var uniforms = {
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opacity: { type: '1f', value: 1 },
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};
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PIXI.Filter.call(this, vertexShader, fragmentShader, uniforms);
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};
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PIXI.DummyPixiFilter.prototype = Object.create(PIXI.Filter.prototype);
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PIXI.DummyPixiFilter.prototype.constructor = PIXI.DummyPixiFilter;
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// Register the effect type and associate it with a "filter creator" object, containing
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// functions to create and manipulate the filter.
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// Don't forget your extension name in the effect type!
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gdjs.PixiFiltersTools.registerFilterCreator('MyDummyExtension::DummyEffect', {
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// MakePIXIFilter should return a PIXI.Filter, that will be applied on the PIXI.Container (for layers)
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// or the PIXI.DisplayObject (for objects).
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makePIXIFilter: function(layer, effectData) {
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var filter = new PIXI.DummyPixiFilter();
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// If you need to store the time or some state, you can set it up now:
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// filter._time = 0;
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// But be careful about the existing member of the filter (consider
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// updating the filter uniforms directly).
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// You can also access to the effect parameters, classified by type:
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// `effectData.doubleParameters.opacity`
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// `effectData.stringParameters.someImage`
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// `effectData.stringParameters.someColor`
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// `effectData.booleanParameters.someBoolean`
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console.info(
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'The PIXI texture found for the Dummy Effect (not actually used):',
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layer
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.getRuntimeScene()
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.getGame()
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.getImageManager()
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.getPIXITexture(effectData.stringParameters.someImage)
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);
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return filter;
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},
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// Function called at every frame rendered
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update: function(filter, layer) {
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// If your filter depends on the time, you can get the elapsed time
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// with `layer.getElapsedTime()`.
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// You can update the uniforms or other state of the filter.
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},
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// Function that will be called to update a (number) parameter of the PIXI filter with a new value
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updateDoubleParameter: function(filter, parameterName, value) {
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if (parameterName === 'opacity') {
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filter.uniforms.opacity = gdjs.PixiFiltersTools.clampValue(value, 0, 1);
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}
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},
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// Function that will be called to update a (string) parameter of the PIXI filter with a new value
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updateStringParameter: function(filter, parameterName, value) {},
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// Function that will be called to update a (boolean) parameter of the PIXI filter with a new value
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updateBooleanParameter: function(filter, parameterName, value) {},
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});
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