intern/cycles/kernel/shaders/node_blackbody.osl


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/*
 * Copyright 2013, 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_blackbody(
	float Temperature = 1200.0,
	output color Color = 0.0)
{
	color rgb = blackbody(Temperature);
	
	/* Scale by luminance */
	float l = luminance(rgb);
	if (l != 0.0)
		rgb /= l;
	Color = rgb;
}