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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/closure/alloc.h"
#include "kernel/closure/emissive.h"
// clang-format on
CCL_NAMESPACE_BEGIN
using namespace OSL;
/// Generic background closure
///
/// We only have a background closure for the shaders
/// to return a color in background shaders. No methods,
/// only the weight is taking into account
///
class GenericBackgroundClosure : public CClosurePrimitive {
public:
void setup(ShaderData *sd, uint32_t /* path_flag */, float3 weight)
{
background_setup(sd, weight);
}
};
/// Holdout closure
///
/// This will be used by the shader to mark the
/// amount of holdout for the current shading
/// point. No parameters, only the weight will be
/// used
///
class HoldoutClosure : CClosurePrimitive {
public:
void setup(ShaderData *sd, uint32_t /* path_flag */, float3 weight)
{
closure_alloc(sd, sizeof(ShaderClosure), CLOSURE_HOLDOUT_ID, weight);
sd->flag |= SD_HOLDOUT;
}
};
ClosureParam *closure_background_params()
{
static ClosureParam params[] = {
CLOSURE_STRING_KEYPARAM(GenericBackgroundClosure, label, "label"),
CLOSURE_FINISH_PARAM(GenericBackgroundClosure)};
return params;
}
CCLOSURE_PREPARE(closure_background_prepare, GenericBackgroundClosure)
ClosureParam *closure_holdout_params()
{
static ClosureParam params[] = {CLOSURE_FINISH_PARAM(HoldoutClosure)};
return params;
}
CCLOSURE_PREPARE(closure_holdout_prepare, HoldoutClosure)
CCL_NAMESPACE_END
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