/
BlendEquation.js
44 lines (39 loc) · 1.1 KB
/
BlendEquation.js
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/*global define*/
define([
'../Core/freezeObject',
'../Renderer/WebGLConstants'
], function(
freezeObject,
WebGLConstants) {
'use strict';
/**
* Determines how two pixels' values are combined.
*
* @exports BlendEquation
*/
var BlendEquation = {
/**
* Pixel values are added componentwise. This is used in additive blending for translucency.
*
* @type {Number}
* @constant
*/
ADD : WebGLConstants.FUNC_ADD,
/**
* Pixel values are subtracted componentwise (source - destination). This is used in alpha blending for translucency.
*
* @type {Number}
* @constant
*/
SUBTRACT : WebGLConstants.FUNC_SUBTRACT,
/**
* Pixel values are subtracted componentwise (destination - source).
*
* @type {Number}
* @constant
*/
REVERSE_SUBTRACT : WebGLConstants.FUNC_REVERSE_SUBTRACT
// No min and max like in ColladaFX GLES2 profile
};
return freezeObject(BlendEquation);
});