cesium
Version:
CesiumJS is a JavaScript library for creating 3D globes and 2D maps in a web browser without a plugin.
62 lines (55 loc) • 1.67 kB
JavaScript
define([
'../Core/freezeObject',
'../Core/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,
/**
* Pixel values are given to the minimum function (min(source, destination)).
*
* This equation operates on each pixel color component.
*
* @type {Number}
* @constant
*/
MIN : WebGLConstants.MIN,
/**
* Pixel values are given to the maximum function (max(source, destination)).
*
* This equation operates on each pixel color component.
*
* @type {Number}
* @constant
*/
MAX : WebGLConstants.MAX
};
return freezeObject(BlendEquation);
});