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++ // Copyright 2009-2021 Intel Corporation
++ // SPDX-License-Identifier: Apache-2.0
++
++ #pragma once
++
++ #include "primitive.h"
++
++ namespace embree
++ {
++ template<int M>
++ struct LineMi
++ {
++ /* Virtual interface to query information about the line segment type */
++ 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 line segments */
++ static __forceinline size_t max_size() { return M; }
++
++ /* Returns required number of primitive blocks for N line segments */
++ static __forceinline size_t blocks(size_t N) { return (N+max_size()-1)/max_size(); }
++
++ /* Returns required number of bytes for N line segments */
++ static __forceinline size_t bytes(size_t N) { return blocks(N)*sizeof(LineMi); }
++
++ public:
++
++ /* Default constructor */
++ __forceinline LineMi() { }
++
++ /* Construction from vertices and IDs */
++ __forceinline LineMi(const vuint<M>& v0, unsigned short leftExists, unsigned short rightExists, const vuint<M>& geomIDs, const vuint<M>& primIDs, Geometry::GType gtype)
++ : gtype((unsigned char)gtype), m((unsigned char)popcnt(vuint<M>(primIDs) != vuint<M>(-1))), sharedGeomID(geomIDs[0]), leftExists (leftExists), rightExists(rightExists), v0(v0), primIDs(primIDs)
++ {
++ assert(all(vuint<M>(geomID()) == geomIDs));
++ }
++
++ /* Returns a mask that tells which line segments are valid */
++ __forceinline vbool<M> valid() const { return primIDs != vuint<M>(-1); }
++
++ /* Returns if the specified line segment is valid */
++ __forceinline bool valid(const size_t i) const { assert(i<M); return primIDs[i] != -1; }
++
++ /* Returns the number of stored line segments */
++ __forceinline size_t size() const { return bsf(~movemask(valid())); }
++
++ /* Returns the geometry IDs */
++ //template<class T>
++ //static __forceinline T unmask(T &index) { return index & 0x3fffffff; }
++
++ __forceinline unsigned int geomID(unsigned int i = 0) const { return sharedGeomID; }
++ //__forceinline vuint<M> geomID() { return unmask(geomIDs); }
++ //__forceinline const vuint<M> geomID() const { return unmask(geomIDs); }
++ //__forceinline unsigned int geomID(const size_t i) const { assert(i<M); return unmask(geomIDs[i]); }
++
++ /* Returns the primitive IDs */
++ __forceinline vuint<M>& primID() { return primIDs; }
++ __forceinline const vuint<M>& primID() const { return primIDs; }
++ __forceinline unsigned int primID(const size_t i) const { assert(i<M); return primIDs[i]; }
++
++ /* gather the line segments */
++ __forceinline void gather(Vec4vf<M>& p0,
++ Vec4vf<M>& p1,
++ const LineSegments* geom) const;
++
++ __forceinline void gatheri(Vec4vf<M>& p0,
++ Vec4vf<M>& p1,
++ const LineSegments* geom,
++ const int itime) const;
++
++ __forceinline void gather(Vec4vf<M>& p0,
++ Vec4vf<M>& p1,
++ const LineSegments* geom,
++ float time) const;
++
++ /* gather the line segments with lateral info */
++ __forceinline void gather(Vec4vf<M>& p0,
++ Vec4vf<M>& p1,
++ Vec4vf<M>& pL,
++ Vec4vf<M>& pR,
++ const LineSegments* geom) const;
++
++ __forceinline void gatheri(Vec4vf<M>& p0,
++ Vec4vf<M>& p1,
++ Vec4vf<M>& pL,
++ Vec4vf<M>& pR,
++ const LineSegments* geom,
++ const int itime) const;
++
++ __forceinline void gather(Vec4vf<M>& p0,
++ Vec4vf<M>& p1,
++ Vec4vf<M>& pL,
++ Vec4vf<M>& pR,
++ const LineSegments* geom,
++ float time) const;
++
++ __forceinline void gather(Vec4vf<M>& p0,
++ Vec4vf<M>& p1,
++ vbool<M>& cL,
++ vbool<M>& cR,
++ const LineSegments* geom) const;
++
++ __forceinline void gatheri(Vec4vf<M>& p0,
++ Vec4vf<M>& p1,
++ vbool<M>& cL,
++ vbool<M>& cR,
++ const LineSegments* geom,
++ const int itime) const;
++
++ __forceinline void gather(Vec4vf<M>& p0,
++ Vec4vf<M>& p1,
++ vbool<M>& cL,
++ vbool<M>& cR,
++ const LineSegments* geom,
++ float time) const;
++
++ /* Calculate the bounds of the line segments */
++ __forceinline const BBox3fa bounds(const Scene* scene, size_t itime = 0) const
++ {
++ BBox3fa bounds = empty;
++ for (size_t i=0; i<M && valid(i); i++)
++ {
++ const LineSegments* geom = scene->get<LineSegments>(geomID(i));
++ const Vec3ff& p0 = geom->vertex(v0[i]+0,itime);
++ const Vec3ff& p1 = geom->vertex(v0[i]+1,itime);
++ BBox3fa b = merge(BBox3fa(p0),BBox3fa(p1));
++ b = enlarge(b,Vec3fa(max(p0.w,p1.w)));
++ bounds.extend(b);
++ }
++ return bounds;
++ }
++
++ /* Calculate the linear bounds of the primitive */
++ __forceinline LBBox3fa linearBounds(const Scene* scene, size_t itime) {
++ return LBBox3fa(bounds(scene,itime+0), bounds(scene,itime+1));
++ }
++
++ __forceinline LBBox3fa linearBounds(const Scene *const scene, size_t itime, size_t numTimeSteps) {
++ LBBox3fa allBounds = empty;
++ for (size_t i=0; i<M && valid(i); i++)
++ {
++ const LineSegments* geom = scene->get<LineSegments>(geomID(i));
++ allBounds.extend(geom->linearBounds(primID(i), itime, numTimeSteps));
++ }
++ return allBounds;
++ }
++
++ __forceinline LBBox3fa linearBounds(const Scene *const scene, const BBox1f time_range)
++ {
++ LBBox3fa allBounds = empty;
++ for (size_t i=0; i<M && valid(i); i++)
++ {
++ const LineSegments* geom = scene->get<LineSegments>(geomID((unsigned int)i));
++ allBounds.extend(geom->linearBounds(primID(i), time_range));
++ }
++ return allBounds;
++ }
++
++ /* Fill line segment from line segment list */
++ template<typename PrimRefT>
++ __forceinline void fill(const PrimRefT* prims, size_t& begin, size_t end, Scene* scene)
++ {
++ Geometry::GType gty = scene->get(prims[begin].geomID())->getType();
++ vuint<M> geomID, primID;
++ vuint<M> v0;
++ unsigned short leftExists = 0;
++ unsigned short rightExists = 0;
++ const PrimRefT* prim = &prims[begin];
++
++ for (size_t i=0; i<M; i++)
++ {
++ const LineSegments* geom = scene->get<LineSegments>(prim->geomID());
++ if (begin<end) {
++ geomID[i] = prim->geomID();
++ primID[i] = prim->primID();
++ v0[i] = geom->segment(prim->primID());
++ leftExists |= geom->segmentLeftExists(primID[i]) << i;
++ rightExists |= geom->segmentRightExists(primID[i]) << i;
++ begin++;
++ } else {
++ assert(i);
++ if (i>0) {
++ geomID[i] = geomID[i-1];
++ primID[i] = -1;
++ v0[i] = v0[i-1];
++ }
++ }
++ if (begin<end) prim = &prims[begin]; // FIXME: remove this line
++ }
++ new (this) LineMi(v0,leftExists,rightExists,geomID,primID,gty); // FIXME: use non temporal store
++ }
++
++ template<typename BVH, typename Allocator>
++ __forceinline static typename BVH::NodeRef createLeaf (BVH* bvh, const PrimRef* prims, const range<size_t>& set, const Allocator& alloc)
++ {
++ size_t start = set.begin();
++ size_t items = LineMi::blocks(set.size());
++ size_t numbytes = LineMi::bytes(set.size());
++ LineMi* accel = (LineMi*) alloc.malloc1(numbytes,M*sizeof(float));
++ for (size_t i=0; i<items; i++) {
++ accel[i].fill(prims,start,set.end(),bvh->scene);
++ }
++ return bvh->encodeLeaf((char*)accel,items);
++ };
++
++ __forceinline LBBox3fa fillMB(const PrimRef* prims, size_t& begin, size_t end, Scene* scene, size_t itime)
++ {
++ fill(prims,begin,end,scene);
++ return linearBounds(scene,itime);
++ }
++
++ __forceinline LBBox3fa fillMB(const PrimRefMB* prims, size_t& begin, size_t end, Scene* scene, const BBox1f time_range)
++ {
++ fill(prims,begin,end,scene);
++ return linearBounds(scene,time_range);
++ }
++
++ template<typename BVH, typename SetMB, typename Allocator>
++ __forceinline static typename BVH::NodeRecordMB4D createLeafMB(BVH* bvh, const SetMB& prims, const Allocator& alloc)
++ {
++ size_t start = prims.begin();
++ size_t end = prims.end();
++ size_t items = LineMi::blocks(prims.size());
++ size_t numbytes = LineMi::bytes(prims.size());
++ LineMi* accel = (LineMi*) alloc.malloc1(numbytes,M*sizeof(float));
++ const typename BVH::NodeRef node = bvh->encodeLeaf((char*)accel,items);
++
++ LBBox3fa bounds = empty;
++ for (size_t i=0; i<items; i++)
++ bounds.extend(accel[i].fillMB(prims.prims->data(),start,end,bvh->scene,prims.time_range));
++
++ return typename BVH::NodeRecordMB4D(node,bounds,prims.time_range);
++ };
++
++ /* Updates the primitive */
++ __forceinline BBox3fa update(LineSegments* geom)
++ {
++ BBox3fa bounds = empty;
++ for (size_t i=0; i<M && valid(i); i++)
++ {
++ const Vec3ff& p0 = geom->vertex(v0[i]+0);
++ const Vec3ff& p1 = geom->vertex(v0[i]+1);
++ BBox3fa b = merge(BBox3fa(p0),BBox3fa(p1));
++ b = enlarge(b,Vec3fa(max(p0.w,p1.w)));
++ bounds.extend(b);
++ }
++ return bounds;
++ }
++
++ /*! output operator */
++ friend __forceinline embree_ostream operator<<(embree_ostream cout, const LineMi& line) {
++ return cout << "Line" << M << "i {" << line.v0 << ", " << line.geomID() << ", " << line.primID() << "}";
++ }
++
++ public:
++ unsigned char gtype;
++ unsigned char m;
++ unsigned int sharedGeomID;
++ unsigned short leftExists, rightExists;
++ vuint<M> v0; // index of start vertex
++ private:
++ vuint<M> primIDs; // primitive ID
++ };
++
++ template<>
++ __forceinline void LineMi<4>::gather(Vec4vf4& p0,
++ Vec4vf4& p1,
++ const LineSegments* geom) const
++ {
++ const vfloat4 a0 = vfloat4::loadu(geom->vertexPtr(v0[0]));
++ const vfloat4 a1 = vfloat4::loadu(geom->vertexPtr(v0[1]));
++ const vfloat4 a2 = vfloat4::loadu(geom->vertexPtr(v0[2]));
++ const vfloat4 a3 = vfloat4::loadu(geom->vertexPtr(v0[3]));
++ transpose(a0,a1,a2,a3,p0.x,p0.y,p0.z,p0.w);
++
++ const vfloat4 b0 = vfloat4::loadu(geom->vertexPtr(v0[0]+1));
++ const vfloat4 b1 = vfloat4::loadu(geom->vertexPtr(v0[1]+1));
++ const vfloat4 b2 = vfloat4::loadu(geom->vertexPtr(v0[2]+1));
++ const vfloat4 b3 = vfloat4::loadu(geom->vertexPtr(v0[3]+1));
++ transpose(b0,b1,b2,b3,p1.x,p1.y,p1.z,p1.w);
++ }
++
++ template<>
++ __forceinline void LineMi<4>::gatheri(Vec4vf4& p0,
++ Vec4vf4& p1,
++ const LineSegments* geom,
++ const int itime) const
++ {
++ const vfloat4 a0 = vfloat4::loadu(geom->vertexPtr(v0[0],itime));
++ const vfloat4 a1 = vfloat4::loadu(geom->vertexPtr(v0[1],itime));
++ const vfloat4 a2 = vfloat4::loadu(geom->vertexPtr(v0[2],itime));
++ const vfloat4 a3 = vfloat4::loadu(geom->vertexPtr(v0[3],itime));
++ transpose(a0,a1,a2,a3,p0.x,p0.y,p0.z,p0.w);
++
++ const vfloat4 b0 = vfloat4::loadu(geom->vertexPtr(v0[0]+1,itime));
++ const vfloat4 b1 = vfloat4::loadu(geom->vertexPtr(v0[1]+1,itime));
++ const vfloat4 b2 = vfloat4::loadu(geom->vertexPtr(v0[2]+1,itime));
++ const vfloat4 b3 = vfloat4::loadu(geom->vertexPtr(v0[3]+1,itime));
++ transpose(b0,b1,b2,b3,p1.x,p1.y,p1.z,p1.w);
++ }
++
++ template<>
++ __forceinline void LineMi<4>::gather(Vec4vf4& p0,
++ Vec4vf4& p1,
++ const LineSegments* geom,
++ float time) const
++ {
++ float ftime;
++ const int itime = geom->timeSegment(time, ftime);
++
++ Vec4vf4 a0,a1;
++ gatheri(a0,a1,geom,itime);
++ Vec4vf4 b0,b1;
++ gatheri(b0,b1,geom,itime+1);
++ p0 = lerp(a0,b0,vfloat4(ftime));
++ p1 = lerp(a1,b1,vfloat4(ftime));
++ }
++
++ template<>
++ __forceinline void LineMi<4>::gather(Vec4vf4& p0,
++ Vec4vf4& p1,
++ vbool4& cL,
++ vbool4& cR,
++ const LineSegments* geom) const
++ {
++ gather(p0,p1,geom);
++ cL = !vbool4(leftExists);
++ cR = !vbool4(rightExists);
++ }
++
++ template<>
++ __forceinline void LineMi<4>::gatheri(Vec4vf4& p0,
++ Vec4vf4& p1,
++ vbool4& cL,
++ vbool4& cR,
++ const LineSegments* geom,
++ const int itime) const
++ {
++ gatheri(p0,p1,geom,itime);
++ cL = !vbool4(leftExists);
++ cR = !vbool4(rightExists);
++ }
++
++ template<>
++ __forceinline void LineMi<4>::gather(Vec4vf4& p0,
++ Vec4vf4& p1,
++ vbool4& cL,
++ vbool4& cR,
++ const LineSegments* geom,
++ float time) const
++ {
++ float ftime;
++ const int itime = geom->timeSegment(time, ftime);
++
++ Vec4vf4 a0,a1;
++ gatheri(a0,a1,geom,itime);
++ Vec4vf4 b0,b1;
++ gatheri(b0,b1,geom,itime+1);
++ p0 = lerp(a0,b0,vfloat4(ftime));
++ p1 = lerp(a1,b1,vfloat4(ftime));
++ cL = !vbool4(leftExists);
++ cR = !vbool4(rightExists);
++ }
++
++ template<>
++ __forceinline void LineMi<4>::gather(Vec4vf4& p0,
++ Vec4vf4& p1,
++ Vec4vf4& pL,
++ Vec4vf4& pR,
++ const LineSegments* geom) const
++ {
++ const vfloat4 a0 = vfloat4::loadu(geom->vertexPtr(v0[0]));
++ const vfloat4 a1 = vfloat4::loadu(geom->vertexPtr(v0[1]));
++ const vfloat4 a2 = vfloat4::loadu(geom->vertexPtr(v0[2]));
++ const vfloat4 a3 = vfloat4::loadu(geom->vertexPtr(v0[3]));
++ transpose(a0,a1,a2,a3,p0.x,p0.y,p0.z,p0.w);
++
++ const vfloat4 b0 = vfloat4::loadu(geom->vertexPtr(v0[0]+1));
++ const vfloat4 b1 = vfloat4::loadu(geom->vertexPtr(v0[1]+1));
++ const vfloat4 b2 = vfloat4::loadu(geom->vertexPtr(v0[2]+1));
++ const vfloat4 b3 = vfloat4::loadu(geom->vertexPtr(v0[3]+1));
++ transpose(b0,b1,b2,b3,p1.x,p1.y,p1.z,p1.w);
++
++ const vfloat4 l0 = (leftExists & (1<<0)) ? vfloat4::loadu(geom->vertexPtr(v0[0]-1)) : vfloat4(inf);
++ const vfloat4 l1 = (leftExists & (1<<1)) ? vfloat4::loadu(geom->vertexPtr(v0[1]-1)) : vfloat4(inf);
++ const vfloat4 l2 = (leftExists & (1<<2)) ? vfloat4::loadu(geom->vertexPtr(v0[2]-1)) : vfloat4(inf);
++ const vfloat4 l3 = (leftExists & (1<<3)) ? vfloat4::loadu(geom->vertexPtr(v0[3]-1)) : vfloat4(inf);
++ transpose(l0,l1,l2,l3,pL.x,pL.y,pL.z,pL.w);
++
++ const vfloat4 r0 = (rightExists & (1<<0)) ? vfloat4::loadu(geom->vertexPtr(v0[0]+2)) : vfloat4(inf);
++ const vfloat4 r1 = (rightExists & (1<<1)) ? vfloat4::loadu(geom->vertexPtr(v0[1]+2)) : vfloat4(inf);
++ const vfloat4 r2 = (rightExists & (1<<2)) ? vfloat4::loadu(geom->vertexPtr(v0[2]+2)) : vfloat4(inf);
++ const vfloat4 r3 = (rightExists & (1<<3)) ? vfloat4::loadu(geom->vertexPtr(v0[3]+2)) : vfloat4(inf);
++ transpose(r0,r1,r2,r3,pR.x,pR.y,pR.z,pR.w);
++ }
++
++ template<>
++ __forceinline void LineMi<4>::gatheri(Vec4vf4& p0,
++ Vec4vf4& p1,
++ Vec4vf4& pL,
++ Vec4vf4& pR,
++ const LineSegments* geom,
++ const int itime) const
++ {
++ const vfloat4 a0 = vfloat4::loadu(geom->vertexPtr(v0[0],itime));
++ const vfloat4 a1 = vfloat4::loadu(geom->vertexPtr(v0[1],itime));
++ const vfloat4 a2 = vfloat4::loadu(geom->vertexPtr(v0[2],itime));
++ const vfloat4 a3 = vfloat4::loadu(geom->vertexPtr(v0[3],itime));
++ transpose(a0,a1,a2,a3,p0.x,p0.y,p0.z,p0.w);
++
++ const vfloat4 b0 = vfloat4::loadu(geom->vertexPtr(v0[0]+1,itime));
++ const vfloat4 b1 = vfloat4::loadu(geom->vertexPtr(v0[1]+1,itime));
++ const vfloat4 b2 = vfloat4::loadu(geom->vertexPtr(v0[2]+1,itime));
++ const vfloat4 b3 = vfloat4::loadu(geom->vertexPtr(v0[3]+1,itime));
++ transpose(b0,b1,b2,b3,p1.x,p1.y,p1.z,p1.w);
++
++ const vfloat4 l0 = (leftExists & (1<<0)) ? vfloat4::loadu(geom->vertexPtr(v0[0]-1,itime)) : vfloat4(inf);
++ const vfloat4 l1 = (leftExists & (1<<1)) ? vfloat4::loadu(geom->vertexPtr(v0[1]-1,itime)) : vfloat4(inf);
++ const vfloat4 l2 = (leftExists & (1<<2)) ? vfloat4::loadu(geom->vertexPtr(v0[2]-1,itime)) : vfloat4(inf);
++ const vfloat4 l3 = (leftExists & (1<<3)) ? vfloat4::loadu(geom->vertexPtr(v0[3]-1,itime)) : vfloat4(inf);
++ transpose(l0,l1,l2,l3,pL.x,pL.y,pL.z,pL.w);
++
++ const vfloat4 r0 = (rightExists & (1<<0)) ? vfloat4::loadu(geom->vertexPtr(v0[0]+2,itime)) : vfloat4(inf);
++ const vfloat4 r1 = (rightExists & (1<<1)) ? vfloat4::loadu(geom->vertexPtr(v0[1]+2,itime)) : vfloat4(inf);
++ const vfloat4 r2 = (rightExists & (1<<2)) ? vfloat4::loadu(geom->vertexPtr(v0[2]+2,itime)) : vfloat4(inf);
++ const vfloat4 r3 = (rightExists & (1<<3)) ? vfloat4::loadu(geom->vertexPtr(v0[3]+2,itime)) : vfloat4(inf);
++ transpose(r0,r1,r2,r3,pR.x,pR.y,pR.z,pR.w);
++ }
++
++ template<>
++ __forceinline void LineMi<4>::gather(Vec4vf4& p0,
++ Vec4vf4& p1,
++ Vec4vf4& pL,
++ Vec4vf4& pR,
++ const LineSegments* geom,
++ float time) const
++ {
++ float ftime;
++ const int itime = geom->timeSegment(time, ftime);
++
++ Vec4vf4 a0,a1,aL,aR;
++ gatheri(a0,a1,aL,aR,geom,itime);
++ Vec4vf4 b0,b1,bL,bR;
++ gatheri(b0,b1,bL,bR,geom,itime+1);
++ p0 = lerp(a0,b0,vfloat4(ftime));
++ p1 = lerp(a1,b1,vfloat4(ftime));
++ pL = lerp(aL,bL,vfloat4(ftime));
++ pR = lerp(aR,bR,vfloat4(ftime));
++ }
++
++ #if defined(__AVX__)
++
++ template<>
++ __forceinline void LineMi<8>::gather(Vec4vf8& p0,
++ Vec4vf8& p1,
++ const LineSegments* geom) const
++ {
++ const vfloat4 a0 = vfloat4::loadu(geom->vertexPtr(v0[0]));
++ const vfloat4 a1 = vfloat4::loadu(geom->vertexPtr(v0[1]));
++ const vfloat4 a2 = vfloat4::loadu(geom->vertexPtr(v0[2]));
++ const vfloat4 a3 = vfloat4::loadu(geom->vertexPtr(v0[3]));
++ const vfloat4 a4 = vfloat4::loadu(geom->vertexPtr(v0[4]));
++ const vfloat4 a5 = vfloat4::loadu(geom->vertexPtr(v0[5]));
++ const vfloat4 a6 = vfloat4::loadu(geom->vertexPtr(v0[6]));
++ const vfloat4 a7 = vfloat4::loadu(geom->vertexPtr(v0[7]));
++ transpose(a0,a1,a2,a3,a4,a5,a6,a7,p0.x,p0.y,p0.z,p0.w);
++
++ const vfloat4 b0 = vfloat4::loadu(geom->vertexPtr(v0[0]+1));
++ const vfloat4 b1 = vfloat4::loadu(geom->vertexPtr(v0[1]+1));
++ const vfloat4 b2 = vfloat4::loadu(geom->vertexPtr(v0[2]+1));
++ const vfloat4 b3 = vfloat4::loadu(geom->vertexPtr(v0[3]+1));
++ const vfloat4 b4 = vfloat4::loadu(geom->vertexPtr(v0[4]+1));
++ const vfloat4 b5 = vfloat4::loadu(geom->vertexPtr(v0[5]+1));
++ const vfloat4 b6 = vfloat4::loadu(geom->vertexPtr(v0[6]+1));
++ const vfloat4 b7 = vfloat4::loadu(geom->vertexPtr(v0[7]+1));
++ transpose(b0,b1,b2,b3,b4,b5,b6,b7,p1.x,p1.y,p1.z,p1.w);
++ }
++
++ template<>
++ __forceinline void LineMi<8>::gatheri(Vec4vf8& p0,
++ Vec4vf8& p1,
++ const LineSegments* geom,
++ const int itime) const
++ {
++ const vfloat4 a0 = vfloat4::loadu(geom->vertexPtr(v0[0],itime));
++ const vfloat4 a1 = vfloat4::loadu(geom->vertexPtr(v0[1],itime));
++ const vfloat4 a2 = vfloat4::loadu(geom->vertexPtr(v0[2],itime));
++ const vfloat4 a3 = vfloat4::loadu(geom->vertexPtr(v0[3],itime));
++ const vfloat4 a4 = vfloat4::loadu(geom->vertexPtr(v0[4],itime));
++ const vfloat4 a5 = vfloat4::loadu(geom->vertexPtr(v0[5],itime));
++ const vfloat4 a6 = vfloat4::loadu(geom->vertexPtr(v0[6],itime));
++ const vfloat4 a7 = vfloat4::loadu(geom->vertexPtr(v0[7],itime));
++ transpose(a0,a1,a2,a3,a4,a5,a6,a7,p0.x,p0.y,p0.z,p0.w);
++
++ const vfloat4 b0 = vfloat4::loadu(geom->vertexPtr(v0[0]+1,itime));
++ const vfloat4 b1 = vfloat4::loadu(geom->vertexPtr(v0[1]+1,itime));
++ const vfloat4 b2 = vfloat4::loadu(geom->vertexPtr(v0[2]+1,itime));
++ const vfloat4 b3 = vfloat4::loadu(geom->vertexPtr(v0[3]+1,itime));
++ const vfloat4 b4 = vfloat4::loadu(geom->vertexPtr(v0[4]+1,itime));
++ const vfloat4 b5 = vfloat4::loadu(geom->vertexPtr(v0[5]+1,itime));
++ const vfloat4 b6 = vfloat4::loadu(geom->vertexPtr(v0[6]+1,itime));
++ const vfloat4 b7 = vfloat4::loadu(geom->vertexPtr(v0[7]+1,itime));
++ transpose(b0,b1,b2,b3,b4,b5,b6,b7,p1.x,p1.y,p1.z,p1.w);
++ }
++
++ template<>
++ __forceinline void LineMi<8>::gather(Vec4vf8& p0,
++ Vec4vf8& p1,
++ const LineSegments* geom,
++ float time) const
++ {
++ float ftime;
++ const int itime = geom->timeSegment(time, ftime);
++
++ Vec4vf8 a0,a1;
++ gatheri(a0,a1,geom,itime);
++ Vec4vf8 b0,b1;
++ gatheri(b0,b1,geom,itime+1);
++ p0 = lerp(a0,b0,vfloat8(ftime));
++ p1 = lerp(a1,b1,vfloat8(ftime));
++ }
++
++ template<>
++ __forceinline void LineMi<8>::gather(Vec4vf8& p0,
++ Vec4vf8& p1,
++ Vec4vf8& pL,
++ Vec4vf8& pR,
++ const LineSegments* geom) const
++ {
++ const vfloat4 a0 = vfloat4::loadu(geom->vertexPtr(v0[0]));
++ const vfloat4 a1 = vfloat4::loadu(geom->vertexPtr(v0[1]));
++ const vfloat4 a2 = vfloat4::loadu(geom->vertexPtr(v0[2]));
++ const vfloat4 a3 = vfloat4::loadu(geom->vertexPtr(v0[3]));
++ const vfloat4 a4 = vfloat4::loadu(geom->vertexPtr(v0[4]));
++ const vfloat4 a5 = vfloat4::loadu(geom->vertexPtr(v0[5]));
++ const vfloat4 a6 = vfloat4::loadu(geom->vertexPtr(v0[6]));
++ const vfloat4 a7 = vfloat4::loadu(geom->vertexPtr(v0[7]));
++ transpose(a0,a1,a2,a3,a4,a5,a6,a7,p0.x,p0.y,p0.z,p0.w);
++
++ const vfloat4 b0 = vfloat4::loadu(geom->vertexPtr(v0[0]+1));
++ const vfloat4 b1 = vfloat4::loadu(geom->vertexPtr(v0[1]+1));
++ const vfloat4 b2 = vfloat4::loadu(geom->vertexPtr(v0[2]+1));
++ const vfloat4 b3 = vfloat4::loadu(geom->vertexPtr(v0[3]+1));
++ const vfloat4 b4 = vfloat4::loadu(geom->vertexPtr(v0[4]+1));
++ const vfloat4 b5 = vfloat4::loadu(geom->vertexPtr(v0[5]+1));
++ const vfloat4 b6 = vfloat4::loadu(geom->vertexPtr(v0[6]+1));
++ const vfloat4 b7 = vfloat4::loadu(geom->vertexPtr(v0[7]+1));
++ transpose(b0,b1,b2,b3,b4,b5,b6,b7,p1.x,p1.y,p1.z,p1.w);
++
++ const vfloat4 l0 = (leftExists & (1<<0)) ? vfloat4::loadu(geom->vertexPtr(v0[0]-1)) : vfloat4(inf);
++ const vfloat4 l1 = (leftExists & (1<<1)) ? vfloat4::loadu(geom->vertexPtr(v0[1]-1)) : vfloat4(inf);
++ const vfloat4 l2 = (leftExists & (1<<2)) ? vfloat4::loadu(geom->vertexPtr(v0[2]-1)) : vfloat4(inf);
++ const vfloat4 l3 = (leftExists & (1<<3)) ? vfloat4::loadu(geom->vertexPtr(v0[3]-1)) : vfloat4(inf);
++ const vfloat4 l4 = (leftExists & (1<<4)) ? vfloat4::loadu(geom->vertexPtr(v0[4]-1)) : vfloat4(inf);
++ const vfloat4 l5 = (leftExists & (1<<5)) ? vfloat4::loadu(geom->vertexPtr(v0[5]-1)) : vfloat4(inf);
++ const vfloat4 l6 = (leftExists & (1<<6)) ? vfloat4::loadu(geom->vertexPtr(v0[6]-1)) : vfloat4(inf);
++ const vfloat4 l7 = (leftExists & (1<<7)) ? vfloat4::loadu(geom->vertexPtr(v0[7]-1)) : vfloat4(inf);
++ transpose(l0,l1,l2,l3,l4,l5,l6,l7,pL.x,pL.y,pL.z,pL.w);
++
++ const vfloat4 r0 = (rightExists & (1<<0)) ? vfloat4::loadu(geom->vertexPtr(v0[0]+2)) : vfloat4(inf);
++ const vfloat4 r1 = (rightExists & (1<<1)) ? vfloat4::loadu(geom->vertexPtr(v0[1]+2)) : vfloat4(inf);
++ const vfloat4 r2 = (rightExists & (1<<2)) ? vfloat4::loadu(geom->vertexPtr(v0[2]+2)) : vfloat4(inf);
++ const vfloat4 r3 = (rightExists & (1<<3)) ? vfloat4::loadu(geom->vertexPtr(v0[3]+2)) : vfloat4(inf);
++ const vfloat4 r4 = (rightExists & (1<<4)) ? vfloat4::loadu(geom->vertexPtr(v0[4]+2)) : vfloat4(inf);
++ const vfloat4 r5 = (rightExists & (1<<5)) ? vfloat4::loadu(geom->vertexPtr(v0[5]+2)) : vfloat4(inf);
++ const vfloat4 r6 = (rightExists & (1<<6)) ? vfloat4::loadu(geom->vertexPtr(v0[6]+2)) : vfloat4(inf);
++ const vfloat4 r7 = (rightExists & (1<<7)) ? vfloat4::loadu(geom->vertexPtr(v0[7]+2)) : vfloat4(inf);
++ transpose(r0,r1,r2,r3,r4,r5,r6,r7,pR.x,pR.y,pR.z,pR.w);
++ }
++
++ template<>
++ __forceinline void LineMi<8>::gatheri(Vec4vf8& p0,
++ Vec4vf8& p1,
++ Vec4vf8& pL,
++ Vec4vf8& pR,
++ const LineSegments* geom,
++ const int itime) const
++ {
++ const vfloat4 a0 = vfloat4::loadu(geom->vertexPtr(v0[0],itime));
++ const vfloat4 a1 = vfloat4::loadu(geom->vertexPtr(v0[1],itime));
++ const vfloat4 a2 = vfloat4::loadu(geom->vertexPtr(v0[2],itime));
++ const vfloat4 a3 = vfloat4::loadu(geom->vertexPtr(v0[3],itime));
++ const vfloat4 a4 = vfloat4::loadu(geom->vertexPtr(v0[4],itime));
++ const vfloat4 a5 = vfloat4::loadu(geom->vertexPtr(v0[5],itime));
++ const vfloat4 a6 = vfloat4::loadu(geom->vertexPtr(v0[6],itime));
++ const vfloat4 a7 = vfloat4::loadu(geom->vertexPtr(v0[7],itime));
++ transpose(a0,a1,a2,a3,a4,a5,a6,a7,p0.x,p0.y,p0.z,p0.w);
++
++ const vfloat4 b0 = vfloat4::loadu(geom->vertexPtr(v0[0]+1,itime));
++ const vfloat4 b1 = vfloat4::loadu(geom->vertexPtr(v0[1]+1,itime));
++ const vfloat4 b2 = vfloat4::loadu(geom->vertexPtr(v0[2]+1,itime));
++ const vfloat4 b3 = vfloat4::loadu(geom->vertexPtr(v0[3]+1,itime));
++ const vfloat4 b4 = vfloat4::loadu(geom->vertexPtr(v0[4]+1,itime));
++ const vfloat4 b5 = vfloat4::loadu(geom->vertexPtr(v0[5]+1,itime));
++ const vfloat4 b6 = vfloat4::loadu(geom->vertexPtr(v0[6]+1,itime));
++ const vfloat4 b7 = vfloat4::loadu(geom->vertexPtr(v0[7]+1,itime));
++ transpose(b0,b1,b2,b3,b4,b5,b6,b7,p1.x,p1.y,p1.z,p1.w);
++
++ const vfloat4 l0 = (leftExists & (1<<0)) ? vfloat4::loadu(geom->vertexPtr(v0[0]-1,itime)) : vfloat4(inf);
++ const vfloat4 l1 = (leftExists & (1<<1)) ? vfloat4::loadu(geom->vertexPtr(v0[1]-1,itime)) : vfloat4(inf);
++ const vfloat4 l2 = (leftExists & (1<<2)) ? vfloat4::loadu(geom->vertexPtr(v0[2]-1,itime)) : vfloat4(inf);
++ const vfloat4 l3 = (leftExists & (1<<3)) ? vfloat4::loadu(geom->vertexPtr(v0[3]-1,itime)) : vfloat4(inf);
++ const vfloat4 l4 = (leftExists & (1<<4)) ? vfloat4::loadu(geom->vertexPtr(v0[4]-1,itime)) : vfloat4(inf);
++ const vfloat4 l5 = (leftExists & (1<<5)) ? vfloat4::loadu(geom->vertexPtr(v0[5]-1,itime)) : vfloat4(inf);
++ const vfloat4 l6 = (leftExists & (1<<6)) ? vfloat4::loadu(geom->vertexPtr(v0[6]-1,itime)) : vfloat4(inf);
++ const vfloat4 l7 = (leftExists & (1<<7)) ? vfloat4::loadu(geom->vertexPtr(v0[7]-1,itime)) : vfloat4(inf);
++ transpose(l0,l1,l2,l3,l4,l5,l6,l7,pL.x,pL.y,pL.z,pL.w);
++
++ const vfloat4 r0 = (rightExists & (1<<0)) ? vfloat4::loadu(geom->vertexPtr(v0[0]+2,itime)) : vfloat4(inf);
++ const vfloat4 r1 = (rightExists & (1<<1)) ? vfloat4::loadu(geom->vertexPtr(v0[1]+2,itime)) : vfloat4(inf);
++ const vfloat4 r2 = (rightExists & (1<<2)) ? vfloat4::loadu(geom->vertexPtr(v0[2]+2,itime)) : vfloat4(inf);
++ const vfloat4 r3 = (rightExists & (1<<3)) ? vfloat4::loadu(geom->vertexPtr(v0[3]+2,itime)) : vfloat4(inf);
++ const vfloat4 r4 = (rightExists & (1<<4)) ? vfloat4::loadu(geom->vertexPtr(v0[4]+2,itime)) : vfloat4(inf);
++ const vfloat4 r5 = (rightExists & (1<<5)) ? vfloat4::loadu(geom->vertexPtr(v0[5]+2,itime)) : vfloat4(inf);
++ const vfloat4 r6 = (rightExists & (1<<6)) ? vfloat4::loadu(geom->vertexPtr(v0[6]+2,itime)) : vfloat4(inf);
++ const vfloat4 r7 = (rightExists & (1<<7)) ? vfloat4::loadu(geom->vertexPtr(v0[7]+2,itime)) : vfloat4(inf);
++ transpose(r0,r1,r2,r3,r4,r5,r6,r7,pR.x,pR.y,pR.z,pR.w);
++ }
++
++ template<>
++ __forceinline void LineMi<8>::gather(Vec4vf8& p0,
++ Vec4vf8& p1,
++ Vec4vf8& pL,
++ Vec4vf8& pR,
++ const LineSegments* geom,
++ float time) const
++ {
++ float ftime;
++ const int itime = geom->timeSegment(time, ftime);
++
++ Vec4vf8 a0,a1,aL,aR;
++ gatheri(a0,a1,aL,aR,geom,itime);
++ Vec4vf8 b0,b1,bL,bR;
++ gatheri(b0,b1,bL,bR,geom,itime+1);
++ p0 = lerp(a0,b0,vfloat8(ftime));
++ p1 = lerp(a1,b1,vfloat8(ftime));
++ pL = lerp(aL,bL,vfloat8(ftime));
++ pR = lerp(aR,bR,vfloat8(ftime));
++ }
++
++ template<>
++ __forceinline void LineMi<8>::gather(Vec4vf8& p0,
++ Vec4vf8& p1,
++ vbool8& cL,
++ vbool8& cR,
++ const LineSegments* geom) const
++ {
++ gather(p0,p1,geom);
++ cL = !vbool8(leftExists);
++ cR = !vbool8(rightExists);
++ }
++
++ template<>
++ __forceinline void LineMi<8>::gatheri(Vec4vf8& p0,
++ Vec4vf8& p1,
++ vbool8& cL,
++ vbool8& cR,
++ const LineSegments* geom,
++ const int itime) const
++ {
++ gatheri(p0,p1,geom,itime);
++ cL = !vbool8(leftExists);
++ cR = !vbool8(rightExists);
++ }
++
++ template<>
++ __forceinline void LineMi<8>::gather(Vec4vf8& p0,
++ Vec4vf8& p1,
++ vbool8& cL,
++ vbool8& cR,
++ const LineSegments* geom,
++ float time) const
++ {
++ float ftime;
++ const int itime = geom->timeSegment(time, ftime);
++
++ Vec4vf8 a0,a1;
++ gatheri(a0,a1,geom,itime);
++ Vec4vf8 b0,b1;
++ gatheri(b0,b1,geom,itime+1);
++ p0 = lerp(a0,b0,vfloat8(ftime));
++ p1 = lerp(a1,b1,vfloat8(ftime));
++ cL = !vbool8(leftExists);
++ cR = !vbool8(rightExists);
++ }
++
++ #endif
++
++ template<int M>
++ typename LineMi<M>::Type LineMi<M>::type;
++
++ typedef LineMi<4> Line4i;
++ typedef LineMi<8> Line8i;
++ }