forked from bartvdbraak/blender
ad26407b52
Using this paper: http://graphics.pixar.com/library/ApproxBSSRDF/paper.pdf This model gives less blurry results than the Cubic and Gaussian we had implemented: - Cubic: https://developer.blender.org/F279670 - Burley: https://developer.blender.org/F279671 The model is called "Christensen-Burley" in the interface, which actually should be read as "Physically based" or "Realistic". Reviewers: juicyfruit, dingto, lukasstockner97, brecht Reviewed By: brecht, dingto Subscribers: robocyte Differential Revision: https://developer.blender.org/D1759
139 lines
4.0 KiB
C++
139 lines
4.0 KiB
C++
/*
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* Adapted from Open Shading Language with this license:
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*
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* Copyright (c) 2009-2010 Sony Pictures Imageworks Inc., et al.
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* All Rights Reserved.
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*
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* Modifications Copyright 2011, Blender Foundation.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are
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* met:
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* * Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* * Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* * Neither the name of Sony Pictures Imageworks nor the names of its
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* contributors may be used to endorse or promote products derived from
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* this software without specific prior written permission.
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <OpenImageIO/fmath.h>
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#include <OSL/genclosure.h>
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#include "kernel_compat_cpu.h"
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#include "osl_bssrdf.h"
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#include "osl_closures.h"
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#include "kernel_types.h"
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#include "kernel_montecarlo.h"
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#include "closure/bsdf_diffuse.h"
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#include "closure/bssrdf.h"
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CCL_NAMESPACE_BEGIN
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using namespace OSL;
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/* Cubic */
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class CubicBSSRDFClosure : public CBSSRDFClosure {
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public:
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CubicBSSRDFClosure()
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{}
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void setup()
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{
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sc.type = CLOSURE_BSSRDF_CUBIC_ID;
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sc.data0 = fabsf(average(radius));
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}
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};
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ClosureParam *closure_bssrdf_cubic_params()
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{
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static ClosureParam params[] = {
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CLOSURE_FLOAT3_PARAM(CubicBSSRDFClosure, sc.N),
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CLOSURE_FLOAT3_PARAM(CubicBSSRDFClosure, radius),
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CLOSURE_FLOAT_PARAM(CubicBSSRDFClosure, sc.data1),
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CLOSURE_FLOAT_PARAM(CubicBSSRDFClosure, sc.T.x),
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CLOSURE_STRING_KEYPARAM(CubicBSSRDFClosure, label, "label"),
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CLOSURE_FINISH_PARAM(CubicBSSRDFClosure)
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};
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return params;
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}
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CCLOSURE_PREPARE(closure_bssrdf_cubic_prepare, CubicBSSRDFClosure)
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/* Gaussian */
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class GaussianBSSRDFClosure : public CBSSRDFClosure {
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public:
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GaussianBSSRDFClosure()
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{}
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void setup()
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{
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sc.type = CLOSURE_BSSRDF_GAUSSIAN_ID;
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sc.data0 = fabsf(average(radius));
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}
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};
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ClosureParam *closure_bssrdf_gaussian_params()
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{
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static ClosureParam params[] = {
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CLOSURE_FLOAT3_PARAM(GaussianBSSRDFClosure, sc.N),
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CLOSURE_FLOAT3_PARAM(GaussianBSSRDFClosure, radius),
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CLOSURE_FLOAT_PARAM(GaussianBSSRDFClosure, sc.data1),
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CLOSURE_STRING_KEYPARAM(GaussianBSSRDFClosure, label, "label"),
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CLOSURE_FINISH_PARAM(GaussianBSSRDFClosure)
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};
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return params;
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}
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CCLOSURE_PREPARE(closure_bssrdf_gaussian_prepare, GaussianBSSRDFClosure)
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/* Burley */
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class BurleyBSSRDFClosure : public CBSSRDFClosure {
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public:
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BurleyBSSRDFClosure()
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{}
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void setup()
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{
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sc.type = CLOSURE_BSSRDF_BURLEY_ID;
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sc.data0 = fabsf(average(radius));
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}
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};
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ClosureParam *closure_bssrdf_burley_params()
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{
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static ClosureParam params[] = {
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CLOSURE_FLOAT3_PARAM(BurleyBSSRDFClosure, sc.N),
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CLOSURE_FLOAT3_PARAM(BurleyBSSRDFClosure, radius),
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CLOSURE_FLOAT_PARAM(BurleyBSSRDFClosure, sc.data1),
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CLOSURE_FLOAT3_PARAM(BurleyBSSRDFClosure, albedo),
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CLOSURE_STRING_KEYPARAM(BurleyBSSRDFClosure, label, "label"),
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CLOSURE_FINISH_PARAM(BurleyBSSRDFClosure)
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};
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return params;
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}
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CCLOSURE_PREPARE(closure_bssrdf_burley_prepare, BurleyBSSRDFClosure)
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CCL_NAMESPACE_END
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