101 lines
3.4 KiB
C++
101 lines
3.4 KiB
C++
// Copyright 2009-2020 Intel Corporation
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// SPDX-License-Identifier: Apache-2.0
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#pragma once
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#include "curveNi.h"
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namespace embree
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{
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template<int M>
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struct CurveNv : public CurveNi<M>
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{
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using CurveNi<M>::N;
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struct Type : public PrimitiveType {
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const char* name() const;
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size_t sizeActive(const char* This) const;
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size_t sizeTotal(const char* This) const;
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size_t getBytes(const char* This) const;
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};
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static Type type;
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public:
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/* Returns maximum number of stored primitives */
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static __forceinline size_t max_size() { return M; }
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/* Returns required number of primitive blocks for N primitives */
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static __forceinline size_t blocks(size_t N) { return (N+M-1)/M; }
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static __forceinline size_t bytes(size_t N)
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{
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const size_t f = N/M, r = N%M;
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static_assert(sizeof(CurveNv) == 22+25*M+4*16*M, "internal data layout issue");
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return f*sizeof(CurveNv) + (r!=0)*(22 + 25*r + 4*16*r);
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}
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public:
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/*! Default constructor. */
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__forceinline CurveNv () {}
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/*! fill curve from curve list */
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__forceinline void fill(const PrimRef* prims, size_t& begin, size_t _end, Scene* scene)
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{
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size_t end = min(begin+M,_end);
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size_t N = end-begin;
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/* encode all primitives */
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for (size_t i=0; i<N; i++)
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{
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const PrimRef& prim = prims[begin+i];
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const unsigned int geomID = prim.geomID();
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const unsigned int primID = prim.primID();
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CurveGeometry* mesh = (CurveGeometry*) scene->get(geomID);
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const unsigned vtxID = mesh->curve(primID);
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Vec3fa::storeu(&this->vertices(i,N)[0],mesh->vertex(vtxID+0));
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Vec3fa::storeu(&this->vertices(i,N)[1],mesh->vertex(vtxID+1));
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Vec3fa::storeu(&this->vertices(i,N)[2],mesh->vertex(vtxID+2));
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Vec3fa::storeu(&this->vertices(i,N)[3],mesh->vertex(vtxID+3));
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}
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}
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template<typename BVH, typename Allocator>
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__forceinline static typename BVH::NodeRef createLeaf (BVH* bvh, const PrimRef* prims, const range<size_t>& set, const Allocator& alloc)
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{
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if (set.size() == 0)
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return BVH::emptyNode;
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/* fall back to CurveNi for oriented curves */
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unsigned int geomID = prims[set.begin()].geomID();
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if (bvh->scene->get(geomID)->getCurveType() == Geometry::GTY_SUBTYPE_ORIENTED_CURVE) {
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return CurveNi<M>::createLeaf(bvh,prims,set,alloc);
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}
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if (bvh->scene->get(geomID)->getCurveBasis() == Geometry::GTY_BASIS_HERMITE) {
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return CurveNi<M>::createLeaf(bvh,prims,set,alloc);
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}
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size_t start = set.begin();
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size_t items = CurveNv::blocks(set.size());
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size_t numbytes = CurveNv::bytes(set.size());
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CurveNv* accel = (CurveNv*) alloc.malloc1(numbytes,BVH::byteAlignment);
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for (size_t i=0; i<items; i++) {
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accel[i].CurveNv<M>::fill(prims,start,set.end(),bvh->scene);
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accel[i].CurveNi<M>::fill(prims,start,set.end(),bvh->scene);
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}
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return bvh->encodeLeaf((char*)accel,items);
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};
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public:
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unsigned char data[4*16*M];
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__forceinline Vec3fa* vertices(size_t i, size_t N) { return (Vec3fa*)CurveNi<M>::end(N)+4*i; }
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__forceinline const Vec3fa* vertices(size_t i, size_t N) const { return (Vec3fa*)CurveNi<M>::end(N)+4*i; }
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};
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template<int M>
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typename CurveNv<M>::Type CurveNv<M>::type;
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typedef CurveNv<4> Curve4v;
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typedef CurveNv<8> Curve8v;
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}
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