forked from bartvdbraak/blender
06888b7beb
allocations for trace data, avoid some virtual function calls. Only helps a few percentages.
99 lines
3.2 KiB
C++
99 lines
3.2 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 "osl_closures.h"
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#include "kernel_types.h"
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#include "closure/emissive.h"
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CCL_NAMESPACE_BEGIN
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using namespace OSL;
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/// Variable cone emissive closure
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///
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/// This primitive emits in a cone having a configurable
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/// penumbra area where the light decays to 0 reaching the
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/// outer_angle limit. It can also behave as a lambertian emitter
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/// if the provided angles are PI/2, which is the default
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///
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class GenericEmissiveClosure : public EmissiveClosure {
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public:
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GenericEmissiveClosure() { }
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void setup() {}
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size_t memsize() const { return sizeof(*this); }
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const char *name() const { return "emission"; }
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void print_on(std::ostream &out) const
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{
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out << name() << "()";
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}
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Color3 eval(const Vec3 &Ng, const Vec3 &omega_out) const
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{
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float3 result = emissive_simple_eval(TO_FLOAT3(Ng), TO_FLOAT3(omega_out));
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return TO_COLOR3(result);
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}
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void sample(const Vec3 &Ng, float randu, float randv,
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Vec3 &omega_out, float &pdf) const
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{
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float3 omega_out_;
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emissive_sample(TO_FLOAT3(Ng), randu, randv, &omega_out_, &pdf);
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omega_out = TO_VEC3(omega_out_);
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}
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float pdf(const Vec3 &Ng, const Vec3 &omega_out) const
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{
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return emissive_pdf(TO_FLOAT3(Ng), TO_FLOAT3(omega_out));
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}
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};
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ClosureParam *closure_emission_params()
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{
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static ClosureParam params[] = {
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CLOSURE_STRING_KEYPARAM("label"),
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CLOSURE_FINISH_PARAM(GenericEmissiveClosure)
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};
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return params;
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}
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CLOSURE_PREPARE(closure_emission_prepare, GenericEmissiveClosure)
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CCL_NAMESPACE_END
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