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/* SPDX-License-Identifier: BSD-3-Clause
*
* Adapted from Open Shading Language
* Copyright (c) 2009-2010 Sony Pictures Imageworks Inc., et al.
* All Rights Reserved.
*
* Modifications Copyright 2011-2022 Blender Foundation. */
#include <OpenImageIO/fmath.h>
#include <OSL/genclosure.h>
#include "kernel/osl/closures.h"
// clang-format off
#include "kernel/device/cpu/compat.h"
#include "kernel/device/cpu/globals.h"
#include "kernel/types.h"
#include "kernel/closure/alloc.h"
#include "kernel/closure/emissive.h"
#include "kernel/util/color.h"
// clang-format on
CCL_NAMESPACE_BEGIN
using namespace OSL;
/// Variable cone emissive closure
///
/// This primitive emits in a cone having a configurable
/// penumbra area where the light decays to 0 reaching the
/// outer_angle limit. It can also behave as a lambertian emitter
/// if the provided angles are PI/2, which is the default
///
class GenericEmissiveClosure : public CClosurePrimitive {
public:
void setup(ShaderData *sd, uint32_t /* path_flag */, float3 weight)
{
emission_setup(sd, rgb_to_spectrum(weight));
}
};
ClosureParam *closure_emission_params()
{
static ClosureParam params[] = {CLOSURE_STRING_KEYPARAM(GenericEmissiveClosure, label, "label"),
CLOSURE_FINISH_PARAM(GenericEmissiveClosure)};
return params;
}
CCLOSURE_PREPARE(closure_emission_prepare, GenericEmissiveClosure)
CCL_NAMESPACE_END
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