236 lines
9.3 KiB
C++
236 lines
9.3 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 "subgrid_intersector.h"
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namespace embree
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{
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namespace isa
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{
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template<int N, bool filter>
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struct SubGridMBIntersector1Pluecker
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{
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typedef SubGridMBQBVHN<N> Primitive;
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typedef SubGridQuadMIntersector1Pluecker<4,filter> Precalculations;
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static __forceinline void intersect(const Precalculations& pre, RayHit& ray, IntersectContext* context, const SubGrid& subgrid)
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{
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STAT3(normal.trav_prims,1,1,1);
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const GridMesh* mesh = context->scene->get<GridMesh>(subgrid.geomID());
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const GridMesh::Grid &g = mesh->grid(subgrid.primID());
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float ftime;
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const int itime = mesh->timeSegment(ray.time(), ftime);
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Vec3vf4 v0,v1,v2,v3; subgrid.gatherMB(v0,v1,v2,v3,context->scene,itime,ftime);
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pre.intersect(ray,context,v0,v1,v2,v3,g,subgrid);
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}
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static __forceinline bool occluded(const Precalculations& pre, Ray& ray, IntersectContext* context, const SubGrid& subgrid)
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{
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STAT3(shadow.trav_prims,1,1,1);
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const GridMesh* mesh = context->scene->get<GridMesh>(subgrid.geomID());
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const GridMesh::Grid &g = mesh->grid(subgrid.primID());
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float ftime;
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const int itime = mesh->timeSegment(ray.time(), ftime);
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Vec3vf4 v0,v1,v2,v3; subgrid.gatherMB(v0,v1,v2,v3,context->scene,itime,ftime);
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return pre.occluded(ray,context,v0,v1,v2,v3,g,subgrid);
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}
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static __forceinline bool pointQuery(PointQuery* query, PointQueryContext* context, const SubGrid& subgrid)
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{
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return PrimitivePointQuery1<Primitive>::pointQuery(query, context, subgrid);
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}
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template<int Nx, bool robust>
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static __forceinline void intersect(const Accel::Intersectors* This, Precalculations& pre, RayHit& ray, IntersectContext* context, const Primitive* prim, size_t num, const TravRay<N,Nx,robust> &tray, size_t& lazy_node)
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{
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BVHNQuantizedBaseNodeIntersector1<N,Nx,robust> isec1;
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for (size_t i=0;i<num;i++)
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{
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vfloat<Nx> dist;
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const float time = prim[i].adjustTime(ray.time());
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assert(time <= 1.0f);
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size_t mask = isec1.intersect(&prim[i].qnode,tray,time,dist);
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#if defined(__AVX__)
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STAT3(normal.trav_hit_boxes[popcnt(mask)],1,1,1);
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#endif
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while(mask != 0)
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{
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const size_t ID = bscf(mask);
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if (unlikely(dist[ID] > ray.tfar)) continue;
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intersect(pre,ray,context,prim[i].subgrid(ID));
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}
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}
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}
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template<int Nx, bool robust>
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static __forceinline bool occluded(const Accel::Intersectors* This, Precalculations& pre, Ray& ray, IntersectContext* context, const Primitive* prim, size_t num, const TravRay<N,Nx,robust> &tray, size_t& lazy_node)
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{
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BVHNQuantizedBaseNodeIntersector1<N,Nx,robust> isec1;
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for (size_t i=0;i<num;i++)
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{
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const float time = prim[i].adjustTime(ray.time());
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assert(time <= 1.0f);
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vfloat<Nx> dist;
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size_t mask = isec1.intersect(&prim[i].qnode,tray,time,dist);
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while(mask != 0)
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{
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const size_t ID = bscf(mask);
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if (occluded(pre,ray,context,prim[i].subgrid(ID)))
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return true;
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}
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}
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return false;
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}
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static __forceinline bool pointQuery(const Accel::Intersectors* This, PointQuery* query, PointQueryContext* context, const Primitive* prim, size_t num, const TravPointQuery<N> &tquery, size_t& lazy_node)
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{
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assert(false && "not implemented");
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return false;
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}
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};
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template<int N, int K, bool filter>
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struct SubGridMBIntersectorKPluecker
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{
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typedef SubGridMBQBVHN<N> Primitive;
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typedef SubGridQuadMIntersectorKPluecker<4,K,filter> Precalculations;
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static __forceinline void intersect(const vbool<K>& valid_i, Precalculations& pre, RayHitK<K>& ray, IntersectContext* context, const SubGrid& subgrid)
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{
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size_t m_valid = movemask(valid_i);
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while(m_valid)
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{
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size_t ID = bscf(m_valid);
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intersect(pre,ray,ID,context,subgrid);
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}
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}
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static __forceinline vbool<K> occluded(const vbool<K>& valid_i, Precalculations& pre, RayK<K>& ray, IntersectContext* context, const SubGrid& subgrid)
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{
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vbool<K> valid0 = valid_i;
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size_t m_valid = movemask(valid_i);
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while(m_valid)
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{
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size_t ID = bscf(m_valid);
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if (occluded(pre,ray,ID,context,subgrid))
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clear(valid0,ID);
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}
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return !valid0;
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}
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static __forceinline void intersect(Precalculations& pre, RayHitK<K>& ray, size_t k, IntersectContext* context, const SubGrid& subgrid)
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{
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STAT3(normal.trav_prims,1,1,1);
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const GridMesh* mesh = context->scene->get<GridMesh>(subgrid.geomID());
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const GridMesh::Grid &g = mesh->grid(subgrid.primID());
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vfloat<K> ftime;
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const vint<K> itime = mesh->timeSegment(ray.time(), ftime);
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Vec3vf4 v0,v1,v2,v3; subgrid.gatherMB(v0,v1,v2,v3,context->scene,itime[k],ftime[k]);
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pre.intersect1(ray,k,context,v0,v1,v2,v3,g,subgrid);
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}
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static __forceinline bool occluded(Precalculations& pre, RayK<K>& ray, size_t k, IntersectContext* context, const SubGrid& subgrid)
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{
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STAT3(shadow.trav_prims,1,1,1);
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const GridMesh* mesh = context->scene->get<GridMesh>(subgrid.geomID());
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const GridMesh::Grid &g = mesh->grid(subgrid.primID());
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vfloat<K> ftime;
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const vint<K> itime = mesh->timeSegment(ray.time(), ftime);
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Vec3vf4 v0,v1,v2,v3; subgrid.gatherMB(v0,v1,v2,v3,context->scene,itime[k],ftime[k]);
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return pre.occluded1(ray,k,context,v0,v1,v2,v3,g,subgrid);
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}
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template<bool robust>
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static __forceinline void intersect(const vbool<K>& valid, const Accel::Intersectors* This, Precalculations& pre, RayHitK<K>& ray, IntersectContext* context, const Primitive* prim, size_t num, const TravRayK<K, robust> &tray, size_t& lazy_node)
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{
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BVHNQuantizedBaseNodeIntersectorK<N,K,robust> isecK;
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for (size_t j=0;j<num;j++)
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{
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size_t m_valid = movemask(prim[j].qnode.validMask());
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const vfloat<K> time = prim[j].adjustTime(ray.time());
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vfloat<K> dist;
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while(m_valid)
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{
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const size_t i = bscf(m_valid);
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if (none(valid & isecK.intersectK(&prim[j].qnode,i,tray,time,dist))) continue;
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intersect(valid,pre,ray,context,prim[j].subgrid(i));
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}
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}
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}
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template<bool robust>
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static __forceinline vbool<K> occluded(const vbool<K>& valid, const Accel::Intersectors* This, Precalculations& pre, RayK<K>& ray, IntersectContext* context, const Primitive* prim, size_t num, const TravRayK<K, robust> &tray, size_t& lazy_node)
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{
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BVHNQuantizedBaseNodeIntersectorK<N,K,robust> isecK;
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vbool<K> valid0 = valid;
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for (size_t j=0;j<num;j++)
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{
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size_t m_valid = movemask(prim[j].qnode.validMask());
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const vfloat<K> time = prim[j].adjustTime(ray.time());
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vfloat<K> dist;
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while(m_valid)
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{
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const size_t i = bscf(m_valid);
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if (none(valid0 & isecK.intersectK(&prim[j].qnode,i,tray,time,dist))) continue;
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valid0 &= !occluded(valid0,pre,ray,context,prim[j].subgrid(i));
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if (none(valid0)) break;
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}
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}
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return !valid0;
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}
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template<int Nx, bool robust>
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static __forceinline void intersect(const Accel::Intersectors* This, Precalculations& pre, RayHitK<K>& ray, size_t k, IntersectContext* context, const Primitive* prim, size_t num, const TravRay<N,Nx,robust> &tray, size_t& lazy_node)
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{
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BVHNQuantizedBaseNodeIntersector1<N,Nx,robust> isec1;
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for (size_t i=0;i<num;i++)
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{
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vfloat<N> dist;
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const float time = prim[i].adjustTime(ray.time()[k]);
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assert(time <= 1.0f);
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size_t mask = isec1.intersect(&prim[i].qnode,tray,time,dist);
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while(mask != 0)
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{
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const size_t ID = bscf(mask);
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if (unlikely(dist[ID] > ray.tfar[k])) continue;
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intersect(pre,ray,k,context,prim[i].subgrid(ID));
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}
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}
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}
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template<int Nx, bool robust>
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static __forceinline bool occluded(const Accel::Intersectors* This, Precalculations& pre, RayK<K>& ray, size_t k, IntersectContext* context, const Primitive* prim, size_t num, const TravRay<N,Nx,robust> &tray, size_t& lazy_node)
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{
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BVHNQuantizedBaseNodeIntersector1<N,Nx,robust> isec1;
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for (size_t i=0;i<num;i++)
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{
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vfloat<N> dist;
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const float time = prim[i].adjustTime(ray.time()[k]);
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assert(time <= 1.0f);
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size_t mask = isec1.intersect(&prim[i].qnode,tray,time,dist);
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while(mask != 0)
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{
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const size_t ID = bscf(mask);
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if (occluded(pre,ray,k,context,prim[i].subgrid(ID)))
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return true;
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}
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}
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return false;
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}
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};
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}
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}
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