forked from bartvdbraak/blender
83e73a2100
This commit changes the way how we pass bounce information to the Light Path node. Instead of manualy copying the bounces into ShaderData, we now directly pass PathState. This reduces the arguments that we need to pass around and also makes it easier to extend the feature. This commit also exposes the Transmission Bounce Depth to the Light Path node. It works similar to the Transparent Depth Output: Replace a Transmission lightpath after X bounces with another shader, e.g a Diffuse one. This can be used to avoid black surfaces, due to low amount of max bounces. Reviewed by Sergey and Brecht, thanks for some hlp with this. I tested compilation and usage on CPU (SVM and OSL), CUDA, OpenCL Split and Mega kernel. Hopefully this covers all devices. :)
57 lines
1.7 KiB
Plaintext
57 lines
1.7 KiB
Plaintext
/*
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* Copyright 2011-2013 Blender Foundation
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#include "stdosl.h"
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shader node_light_path(
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output float IsCameraRay = 0.0,
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output float IsShadowRay = 0.0,
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output float IsDiffuseRay = 0.0,
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output float IsGlossyRay = 0.0,
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output float IsSingularRay = 0.0,
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output float IsReflectionRay = 0.0,
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output float IsTransmissionRay = 0.0,
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output float IsVolumeScatterRay = 0.0,
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output float RayLength = 0.0,
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output float RayDepth = 0.0,
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output float TransparentDepth = 0.0,
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output float TransmissionDepth = 0.0)
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{
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IsCameraRay = raytype("camera");
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IsShadowRay = raytype("shadow");
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IsDiffuseRay = raytype("diffuse");
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IsGlossyRay = raytype("glossy");
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IsSingularRay = raytype("singular");
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IsReflectionRay = raytype("reflection");
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IsTransmissionRay = raytype("refraction");
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IsVolumeScatterRay = raytype("volume_scatter");
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getattribute("path:ray_length", RayLength);
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int ray_depth;
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getattribute("path:ray_depth", ray_depth);
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RayDepth = (float)ray_depth;
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int transparent_depth;
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getattribute("path:transparent_depth", transparent_depth);
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TransparentDepth = (float)transparent_depth;
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int transmission_depth;
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getattribute("path:transmission_depth", transmission_depth);
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TransmissionDepth = (float)transmission_depth;
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}
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