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// Copyright 2009-2021 Intel Corporation
// SPDX-License-Identifier: Apache-2.0
#pragma once
#include "primitive.h"
#include "../common/scene_instance.h"
namespace embree
{
struct InstancePrimitive
{
struct Type : public PrimitiveType
{
const char* name() const;
size_t sizeActive(const char* This) const;
size_t sizeTotal(const char* This) const;
size_t getBytes(const char* This) const;
};
static Type type;
public:
/* primitive supports multiple time segments */
static const bool singleTimeSegment = false;
/* Returns maximum number of stored primitives */
static __forceinline size_t max_size() { return 1; }
/* Returns required number of primitive blocks for N primitives */
static __forceinline size_t blocks(size_t N) { return N; }
public:
InstancePrimitive (const Instance* instance, unsigned int instID)
: instance(instance)
, instID_(instID)
{}
__forceinline void fill(const PrimRef* prims, size_t& i, size_t end, Scene* scene)
{
assert(end-i == 1);
const PrimRef& prim = prims[i]; i++;
const unsigned int geomID = prim.geomID();
const Instance* instance = scene->get<Instance>(geomID);
new (this) InstancePrimitive(instance, geomID);
}
__forceinline LBBox3fa fillMB(const PrimRef* prims, size_t& i, size_t end, Scene* scene, size_t itime)
{
assert(end-i == 1);
const PrimRef& prim = prims[i]; i++;
const unsigned int geomID = prim.geomID();
const Instance* instance = scene->get<Instance>(geomID);
new (this) InstancePrimitive(instance,geomID);
return instance->linearBounds(0,itime);
}
__forceinline LBBox3fa fillMB(const PrimRefMB* prims, size_t& i, size_t end, Scene* scene, const BBox1f time_range)
{
assert(end-i == 1);
const PrimRefMB& prim = prims[i]; i++;
const unsigned int geomID = prim.geomID();
const Instance* instance = scene->get<Instance>(geomID);
new (this) InstancePrimitive(instance,geomID);
return instance->linearBounds(0,time_range);
}
/* Updates the primitive */
__forceinline BBox3fa update(Instance* instance) {
return instance->bounds(0);
}
public:
const Instance* instance;
const unsigned int instID_ = std::numeric_limits<unsigned int>::max ();
};
}
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