d832d993c5
These replace float3 and packed_float3 in various places in the kernel where a spectral color representation will be used in the future. That representation will require more than 3 channels and conversion to from/RGB. The kernel code was refactored to remove the assumption that Spectrum and RGB colors are the same thing. There are no functional changes, Spectrum is still a float3 and the conversion functions are no-ops. Differential Revision: https://developer.blender.org/D15535
55 lines
1.4 KiB
C++
55 lines
1.4 KiB
C++
/* SPDX-License-Identifier: BSD-3-Clause
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*
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* Adapted from Open Shading Language
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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 2011-2022 Blender Foundation. */
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#include <OpenImageIO/fmath.h>
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#include <OSL/genclosure.h>
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#include "kernel/osl/closures.h"
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// clang-format off
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#include "kernel/device/cpu/compat.h"
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#include "kernel/device/cpu/globals.h"
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#include "kernel/types.h"
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#include "kernel/closure/alloc.h"
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#include "kernel/closure/emissive.h"
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#include "kernel/util/color.h"
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// clang-format on
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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 CClosurePrimitive {
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public:
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void setup(ShaderData *sd, uint32_t /* path_flag */, float3 weight)
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{
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emission_setup(sd, rgb_to_spectrum(weight));
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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[] = {CLOSURE_STRING_KEYPARAM(GenericEmissiveClosure, label, "label"),
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CLOSURE_FINISH_PARAM(GenericEmissiveClosure)};
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return params;
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}
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CCLOSURE_PREPARE(closure_emission_prepare, GenericEmissiveClosure)
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CCL_NAMESPACE_END
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