forked from bartvdbraak/blender
df1e9b662b
There were to copies of stdosl.h one from stock OSL and one in the cycles tree augmented with cycles specific closures. moved the cycles ones to stdcycles.h and copied the stock stdosl.h and accompanying headers from the OSL shader folder. for further details see D6812. Reviewed By: brecht Differential Revision: https://developer.blender.org/D6812
59 lines
1.9 KiB
Plaintext
59 lines
1.9 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 "stdcycles.h"
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shader node_vector_displacement(color Vector = color(0.0, 0.0, 0.0),
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float Midlevel = 0.0,
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float Scale = 1.0,
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string space = "tangent",
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string attr_name = "geom:tangent",
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string attr_sign_name = "geom:tangent_sign",
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output vector Displacement = vector(0.0, 0.0, 0.0))
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{
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vector offset = (Vector - vector(Midlevel)) * Scale;
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if (space == "tangent") {
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/* Tangent space. */
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vector N_object = normalize(transform("world", "object", N));
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vector T_object;
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if (getattribute(attr_name, T_object)) {
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T_object = normalize(T_object);
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}
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else {
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T_object = normalize(dPdu);
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}
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vector B_object = normalize(cross(N_object, T_object));
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float tangent_sign;
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if (getattribute(attr_sign_name, tangent_sign)) {
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B_object *= tangent_sign;
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}
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Displacement = T_object * offset[0] + N_object * offset[1] + B_object * offset[2];
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}
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else {
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/* Object or world space. */
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Displacement = offset;
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}
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if (space != "world") {
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/* Tangent or object space. */
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Displacement = transform("object", "world", Displacement);
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}
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}
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