43 lines
1.2 KiB
JavaScript
43 lines
1.2 KiB
JavaScript
'use strict';
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var Extensions = require('../extensions/Extensions.js');
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var BlendModeFilter = require('../filters/blend-modes/BlendModeFilter.js');
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"use strict";
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class DifferenceBlend extends BlendModeFilter.BlendModeFilter {
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constructor() {
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super({
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gl: {
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functions: `
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vec3 blendDifference(vec3 base, vec3 blend, float opacity)
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{
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return (abs(blend - base) * opacity + base * (1.0 - opacity));
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}
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`,
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main: `
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finalColor = vec4(blendDifference(back.rgb, front.rgb,front.a), blendedAlpha) * uBlend;
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`
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},
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gpu: {
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functions: `
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fn blendDifference(base:vec3<f32>, blend:vec3<f32>, opacity:f32) -> vec3<f32>
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{
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return (abs(blend - base) * opacity + base * (1.0 - opacity));
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}
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`,
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main: `
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out = vec4<f32>(blendDifference(back.rgb, front.rgb, front.a), blendedAlpha) * blendUniforms.uBlend;
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`
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}
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});
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}
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}
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/** @ignore */
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DifferenceBlend.extension = {
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name: "difference",
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type: Extensions.ExtensionType.BlendMode
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};
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exports.DifferenceBlend = DifferenceBlend;
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//# sourceMappingURL=DifferenceBlend.js.map
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