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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 ();
++ };
++ }