File: src/pixi/renderers/webgl/utils/WebGLBlendModeManager.js
/**
* @author Mat Groves http://matgroves.com/ @Doormat23
*/
/**
* @class WebGLBlendModeManager
* @constructor
* @param gl {WebGLContext} the current WebGL drawing context
*/
PIXI.WebGLBlendModeManager = function()
{
/**
* @property currentBlendMode
* @type Number
*/
this.currentBlendMode = 99999;
};
PIXI.WebGLBlendModeManager.prototype.constructor = PIXI.WebGLBlendModeManager;
/**
* Sets the WebGL Context.
*
* @method setContext
* @param gl {WebGLContext} the current WebGL drawing context
*/
PIXI.WebGLBlendModeManager.prototype.setContext = function(gl)
{
this.gl = gl;
};
/**
* Sets-up the given blendMode from WebGL's point of view.
*
* @method setBlendMode
* @param blendMode {Number} the blendMode, should be a Pixi const, such as PIXI.BlendModes.ADD
*/
PIXI.WebGLBlendModeManager.prototype.setBlendMode = function(blendMode)
{
if(this.currentBlendMode === blendMode)return false;
this.currentBlendMode = blendMode;
var blendModeWebGL = PIXI.blendModesWebGL[this.currentBlendMode];
this.gl.blendFunc(blendModeWebGL[0], blendModeWebGL[1]);
return true;
};
/**
* Destroys this object.
*
* @method destroy
*/
PIXI.WebGLBlendModeManager.prototype.destroy = function()
{
this.gl = null;
};