blender/intern/cycles/kernel/shaders/node_light_path.osl
Carlo Andreacchio 7765b73f6d Cycles: add Transparent Depth output to Light Path node.
This can for example be useful if you want to manually terminate the path at
some point and use a color other than black.

Reviewed By: brecht

Differential Revision: https://developer.blender.org/D454
2014-04-21 14:44:36 +02:00

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/*
* 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 IsVolumeScatterRay = 0.0,
output float RayLength = 0.0,
output float RayDepth = 0.0,
output float TransparentDepth = 0.0)
{
IsCameraRay = raytype("camera");
IsShadowRay = raytype("shadow");
IsDiffuseRay = raytype("diffuse");
IsGlossyRay = raytype("glossy");
IsSingularRay = raytype("singular");
IsReflectionRay = raytype("reflection");
IsTransmissionRay = raytype("refraction");
IsVolumeScatterRay = raytype("volume_scatter");
getattribute("path:ray_length", RayLength);
int ray_depth;
getattribute("path:ray_depth", ray_depth);
RayDepth = (float)ray_depth;
int transparent_depth;
getattribute("path:transparent_depth", transparent_depth);
TransparentDepth = (float)transparent_depth;
}