blender/intern/cycles/kernel/shaders/node_normal.osl
Sergey Sharybin d68521df7b Cycles: Fix difference between SVM and OSL implementation of Normal node
SVM was normalizing the input normal, OSL did not. This lead to render
result differences across this shading systems.
2014-12-10 19:07:50 +05:00

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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_normal(
normal Direction = normal(0.0, 0.0, 0.0),
normal NormalIn = normal(0.0, 0.0, 0.0),
output normal NormalOut = normal(0.0, 0.0, 0.0),
output float Dot = 1.0)
{
NormalOut = normalize(Direction);
Dot = dot(NormalOut, normalize(NormalIn));
}