import WebGLConstants from '../Core/WebGLConstants.js';
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/**
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* Determines how two pixels' values are combined.
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*
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* @exports BlendEquation
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*/
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var BlendEquation = {
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/**
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* Pixel values are added componentwise. This is used in additive blending for translucency.
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*
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* @type {Number}
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* @constant
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*/
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ADD : WebGLConstants.FUNC_ADD,
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/**
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* Pixel values are subtracted componentwise (source - destination). This is used in alpha blending for translucency.
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*
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* @type {Number}
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* @constant
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*/
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SUBTRACT : WebGLConstants.FUNC_SUBTRACT,
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/**
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* Pixel values are subtracted componentwise (destination - source).
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*
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* @type {Number}
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* @constant
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*/
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REVERSE_SUBTRACT : WebGLConstants.FUNC_REVERSE_SUBTRACT,
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/**
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* Pixel values are given to the minimum function (min(source, destination)).
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*
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* This equation operates on each pixel color component.
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*
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* @type {Number}
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* @constant
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*/
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MIN : WebGLConstants.MIN,
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/**
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* Pixel values are given to the maximum function (max(source, destination)).
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*
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* This equation operates on each pixel color component.
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*
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* @type {Number}
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* @constant
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*/
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MAX : WebGLConstants.MAX
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};
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export default Object.freeze(BlendEquation);
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