/*
 * Copyright 2011, Blender Foundation.
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * as published by the Free Software Foundation; either version 2
 * of the License, or (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software Foundation,
 * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
 */

#include "stdosl.h"

shader node_attribute(
	string bump_offset = "center",
	string name = "",
	output point Vector = point(0.0, 0.0, 0.0),
	output color Color = 0.0,
	output float Fac = 0.0)
{
	getattribute(name, Color);
	Vector = point(Color);
	getattribute(name, Fac);

	if (bump_offset == "dx") {
		Color += Dx(Color);
		Vector += Dx(Vector);
		Fac += Dx(Fac);
	}
	else if (bump_offset == "dy") {
		Color += Dy(Color);
		Vector += Dy(Vector);
		Fac += Dy(Fac);
	}
}