blender/intern/cycles/kernel/shaders/node_light_path.osl

/*
 * Copyright 2011-2013 Blender Foundation
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License
 */

#include "stdosl.h"

shader node_light_path(
	output float IsCameraRay = 0.0,
	output float IsShadowRay = 0.0,
	output float IsDiffuseRay = 0.0,
	output float IsGlossyRay = 0.0,
	output float IsSingularRay = 0.0,
	output float IsReflectionRay = 0.0,
	output float IsTransmissionRay = 0.0,
	output float RayLength = 0.0,
	output float RayDepth = 0.0)
{
	IsCameraRay = raytype("camera");
	IsShadowRay = raytype("shadow");
	IsDiffuseRay = raytype("diffuse");
	IsGlossyRay = raytype("glossy");
	IsSingularRay = raytype("singular");
	IsReflectionRay = raytype("reflection");
	IsTransmissionRay = raytype("refraction");

	getattribute("path:ray_length", RayLength);

	int ray_depth;
	getattribute("path:ray_depth", ray_depth);
	RayDepth = (float)ray_depth;
}