_onContextChange()
    {
        if (this.quad) this.quad.destroy();

        this.quad = new glutil.GLQuad(this.renderer.gl);

        // TODO: clear and reset FilterUtils renderTargets
    }
/**
     * Called by base Manager class when there is a WebGL context change.
     *
     * @private
     */
Called by base Manager class when there is a WebGL context change.
@private
Called by base Manager class when there is a WebGL context change . @private
_onContextChange()
    {
        if (this.quad) this.quad.destroy();
        this.quad = new glutil.GLQuad(this.renderer.gl);
    }
_onContextChange ( ) { if ( this . quad ) this . quad . destroy ( ) ; this . quad = new glutil . GLQuad ( this . renderer . gl ) ; }
Called by base Manager class when there is a WebGL context change.
Called by base Manager class when there is a WebGL context change .
// TODO: clear and reset FilterUtils renderTargets