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virtualx-engine/thirdparty/embree/kernels/geometry/curveNi_intersector.h

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Add Embree thirdparty library
2020-12-19 14:50:20 +01:00
// Copyright 2009-2020 Intel Corporation
// SPDX-License-Identifier: Apache-2.0
#pragma once
#include "curveNi.h"
namespace embree
{
namespace isa
{
template<int M>
struct CurveNiIntersector1
{
typedef CurveNi<M> Primitive;
typedef Vec3vf<M> Vec3vfM;
typedef LinearSpace3<Vec3vfM>LinearSpace3vfM;
typedef CurvePrecalculations1 Precalculations;
static __forceinline vbool<M> intersect(Ray& ray, const Primitive& prim, vfloat<M>& tNear_o)
{
const size_t N = prim.N;
const vfloat4 offset_scale = vfloat4::loadu(prim.offset(N));
const Vec3fa offset = Vec3fa(offset_scale);
const Vec3fa scale = Vec3fa(shuffle<3,3,3,3>(offset_scale));
const Vec3fa org1 = (ray.org-offset)*scale;
const Vec3fa dir1 = ray.dir*scale;
const LinearSpace3vfM space(vfloat<M>::load(prim.bounds_vx_x(N)), vfloat<M>::load(prim.bounds_vx_y(N)), vfloat<M>::load(prim.bounds_vx_z(N)),
vfloat<M>::load(prim.bounds_vy_x(N)), vfloat<M>::load(prim.bounds_vy_y(N)), vfloat<M>::load(prim.bounds_vy_z(N)),
vfloat<M>::load(prim.bounds_vz_x(N)), vfloat<M>::load(prim.bounds_vz_y(N)), vfloat<M>::load(prim.bounds_vz_z(N)));
const Vec3vfM dir2 = xfmVector(space,Vec3vfM(dir1));
const Vec3vfM org2 = xfmPoint (space,Vec3vfM(org1));
const Vec3vfM rcp_dir2 = rcp_safe(dir2);
const vfloat<M> t_lower_x = (vfloat<M>::load(prim.bounds_vx_lower(N))-vfloat<M>(org2.x))*vfloat<M>(rcp_dir2.x);
const vfloat<M> t_upper_x = (vfloat<M>::load(prim.bounds_vx_upper(N))-vfloat<M>(org2.x))*vfloat<M>(rcp_dir2.x);
const vfloat<M> t_lower_y = (vfloat<M>::load(prim.bounds_vy_lower(N))-vfloat<M>(org2.y))*vfloat<M>(rcp_dir2.y);
const vfloat<M> t_upper_y = (vfloat<M>::load(prim.bounds_vy_upper(N))-vfloat<M>(org2.y))*vfloat<M>(rcp_dir2.y);
const vfloat<M> t_lower_z = (vfloat<M>::load(prim.bounds_vz_lower(N))-vfloat<M>(org2.z))*vfloat<M>(rcp_dir2.z);
const vfloat<M> t_upper_z = (vfloat<M>::load(prim.bounds_vz_upper(N))-vfloat<M>(org2.z))*vfloat<M>(rcp_dir2.z);
const vfloat<M> round_up (1.0f+3.0f*float(ulp));
const vfloat<M> round_down(1.0f-3.0f*float(ulp));
const vfloat<M> tNear = round_down*max(mini(t_lower_x,t_upper_x),mini(t_lower_y,t_upper_y),mini(t_lower_z,t_upper_z),vfloat<M>(ray.tnear()));
const vfloat<M> tFar = round_up *min(maxi(t_lower_x,t_upper_x),maxi(t_lower_y,t_upper_y),maxi(t_lower_z,t_upper_z),vfloat<M>(ray.tfar));
tNear_o = tNear;
return (vint<M>(step) < vint<M>(prim.N)) & (tNear <= tFar);
}
template<typename Intersector, typename Epilog>
static __forceinline void intersect_t(const Precalculations& pre, RayHit& ray, IntersectContext* context, const Primitive& prim)
{
vfloat<M> tNear;
vbool<M> valid = intersect(ray,prim,tNear);
const size_t N = prim.N;
size_t mask = movemask(valid);
while (mask)
{
const size_t i = bscf(mask);
STAT3(normal.trav_prims,1,1,1);
const unsigned int geomID = prim.geomID(N);
const unsigned int primID = prim.primID(N)[i];
const CurveGeometry* geom = context->scene->get<CurveGeometry>(geomID);
Vec3ff a0,a1,a2,a3; geom->gather(a0,a1,a2,a3,geom->curve(primID));
size_t mask1 = mask;
const size_t i1 = bscf(mask1);
if (mask) {
const unsigned int primID1 = prim.primID(N)[i1];
geom->prefetchL1_vertices(geom->curve(primID1));
if (mask1) {
const size_t i2 = bsf(mask1);
const unsigned int primID2 = prim.primID(N)[i2];
geom->prefetchL2_vertices(geom->curve(primID2));
}
}
Intersector().intersect(pre,ray,context,geom,primID,a0,a1,a2,a3,Epilog(ray,context,geomID,primID));
mask &= movemask(tNear <= vfloat<M>(ray.tfar));
}
}
template<typename Intersector, typename Epilog>
static __forceinline bool occluded_t(const Precalculations& pre, Ray& ray, IntersectContext* context, const Primitive& prim)
{
vfloat<M> tNear;
vbool<M> valid = intersect(ray,prim,tNear);
const size_t N = prim.N;
size_t mask = movemask(valid);
while (mask)
{
const size_t i = bscf(mask);
STAT3(shadow.trav_prims,1,1,1);
const unsigned int geomID = prim.geomID(N);
const unsigned int primID = prim.primID(N)[i];
const CurveGeometry* geom = context->scene->get<CurveGeometry>(geomID);
Vec3ff a0,a1,a2,a3; geom->gather(a0,a1,a2,a3,geom->curve(primID));
size_t mask1 = mask;
const size_t i1 = bscf(mask1);
if (mask) {
const unsigned int primID1 = prim.primID(N)[i1];
geom->prefetchL1_vertices(geom->curve(primID1));
if (mask1) {
const size_t i2 = bsf(mask1);
const unsigned int primID2 = prim.primID(N)[i2];
geom->prefetchL2_vertices(geom->curve(primID2));
}
}
if (Intersector().intersect(pre,ray,context,geom,primID,a0,a1,a2,a3,Epilog(ray,context,geomID,primID)))
return true;
mask &= movemask(tNear <= vfloat<M>(ray.tfar));
}
return false;
}
template<typename Intersector, typename Epilog>
static __forceinline void intersect_n(const Precalculations& pre, RayHit& ray, IntersectContext* context, const Primitive& prim)
{
vfloat<M> tNear;
vbool<M> valid = intersect(ray,prim,tNear);
const size_t N = prim.N;
size_t mask = movemask(valid);
while (mask)
{
const size_t i = bscf(mask);
STAT3(normal.trav_prims,1,1,1);
const unsigned int geomID = prim.geomID(N);
const unsigned int primID = prim.primID(N)[i];
const CurveGeometry* geom = context->scene->get<CurveGeometry>(geomID);
unsigned int vertexID = geom->curve(primID);
Vec3ff a0,a1,a2,a3; Vec3fa n0,n1,n2,n3; geom->gather(a0,a1,a2,a3,n0,n1,n2,n3,vertexID);
size_t mask1 = mask;
const size_t i1 = bscf(mask1);
if (mask) {
const unsigned int primID1 = prim.primID(N)[i1];
geom->prefetchL1_vertices(geom->curve(primID1));
if (mask1) {
const size_t i2 = bsf(mask1);
const unsigned int primID2 = prim.primID(N)[i2];
geom->prefetchL2_vertices(geom->curve(primID2));
}
}
Intersector().intersect(pre,ray,context,geom,primID,a0,a1,a2,a3,n0,n1,n2,n3,Epilog(ray,context,geomID,primID));
mask &= movemask(tNear <= vfloat<M>(ray.tfar));
}
}
template<typename Intersector, typename Epilog>
static __forceinline bool occluded_n(const Precalculations& pre, Ray& ray, IntersectContext* context, const Primitive& prim)
{
vfloat<M> tNear;
vbool<M> valid = intersect(ray,prim,tNear);
const size_t N = prim.N;
size_t mask = movemask(valid);
while (mask)
{
const size_t i = bscf(mask);
STAT3(shadow.trav_prims,1,1,1);
const unsigned int geomID = prim.geomID(N);
const unsigned int primID = prim.primID(N)[i];
const CurveGeometry* geom = context->scene->get<CurveGeometry>(geomID);
unsigned int vertexID = geom->curve(primID);
Vec3ff a0,a1,a2,a3; Vec3fa n0,n1,n2,n3; geom->gather(a0,a1,a2,a3,n0,n1,n2,n3,vertexID);
size_t mask1 = mask;
const size_t i1 = bscf(mask1);
if (mask) {
const unsigned int primID1 = prim.primID(N)[i1];
geom->prefetchL1_vertices(geom->curve(primID1));
if (mask1) {
const size_t i2 = bsf(mask1);
const unsigned int primID2 = prim.primID(N)[i2];
geom->prefetchL2_vertices(geom->curve(primID2));
}
}
if (Intersector().intersect(pre,ray,context,geom,primID,a0,a1,a2,a3,n0,n1,n2,n3,Epilog(ray,context,geomID,primID)))
return true;
mask &= movemask(tNear <= vfloat<M>(ray.tfar));
}
return false;
}
template<typename Intersector, typename Epilog>
static __forceinline void intersect_h(const Precalculations& pre, RayHit& ray, IntersectContext* context, const Primitive& prim)
{
vfloat<M> tNear;
vbool<M> valid = intersect(ray,prim,tNear);
const size_t N = prim.N;
size_t mask = movemask(valid);
while (mask)
{
const size_t i = bscf(mask);
STAT3(normal.trav_prims,1,1,1);
const unsigned int geomID = prim.geomID(N);
const unsigned int primID = prim.primID(N)[i];
const CurveGeometry* geom = context->scene->get<CurveGeometry>(geomID);
Vec3ff p0,t0,p1,t1; geom->gather_hermite(p0,t0,p1,t1,geom->curve(primID));
Intersector().intersect(pre,ray,context,geom,primID,p0,t0,p1,t1,Epilog(ray,context,geomID,primID));
mask &= movemask(tNear <= vfloat<M>(ray.tfar));
}
}
template<typename Intersector, typename Epilog>
static __forceinline bool occluded_h(const Precalculations& pre, Ray& ray, IntersectContext* context, const Primitive& prim)
{
vfloat<M> tNear;
vbool<M> valid = intersect(ray,prim,tNear);
const size_t N = prim.N;
size_t mask = movemask(valid);
while (mask)
{
const size_t i = bscf(mask);
STAT3(shadow.trav_prims,1,1,1);
const unsigned int geomID = prim.geomID(N);
const unsigned int primID = prim.primID(N)[i];
const CurveGeometry* geom = context->scene->get<CurveGeometry>(geomID);
Vec3ff p0,t0,p1,t1; geom->gather_hermite(p0,t0,p1,t1,geom->curve(primID));
if (Intersector().intersect(pre,ray,context,geom,primID,p0,t0,p1,t1,Epilog(ray,context,geomID,primID)))
return true;
mask &= movemask(tNear <= vfloat<M>(ray.tfar));
}
return false;
}
template<typename Intersector, typename Epilog>
static __forceinline void intersect_hn(const Precalculations& pre, RayHit& ray, IntersectContext* context, const Primitive& prim)
{
vfloat<M> tNear;
vbool<M> valid = intersect(ray,prim,tNear);
const size_t N = prim.N;
size_t mask = movemask(valid);
while (mask)
{
const size_t i = bscf(mask);
STAT3(normal.trav_prims,1,1,1);
const unsigned int geomID = prim.geomID(N);
const unsigned int primID = prim.primID(N)[i];
const CurveGeometry* geom = context->scene->get<CurveGeometry>(geomID);
Vec3ff p0,t0,p1,t1; Vec3fa n0,dn0,n1,dn1; geom->gather_hermite(p0,t0,n0,dn0,p1,t1,n1,dn1,geom->curve(primID));
Intersector().intersect(pre,ray,context,geom,primID,p0,t0,p1,t1,n0,dn0,n1,dn1,Epilog(ray,context,geomID,primID));
mask &= movemask(tNear <= vfloat<M>(ray.tfar));
}
}
template<typename Intersector, typename Epilog>
static __forceinline bool occluded_hn(const Precalculations& pre, Ray& ray, IntersectContext* context, const Primitive& prim)
{
vfloat<M> tNear;
vbool<M> valid = intersect(ray,prim,tNear);
const size_t N = prim.N;
size_t mask = movemask(valid);
while (mask)
{
const size_t i = bscf(mask);
STAT3(shadow.trav_prims,1,1,1);
const unsigned int geomID = prim.geomID(N);
const unsigned int primID = prim.primID(N)[i];
const CurveGeometry* geom = context->scene->get<CurveGeometry>(geomID);
Vec3ff p0,t0,p1,t1; Vec3fa n0,dn0,n1,dn1; geom->gather_hermite(p0,t0,n0,dn0,p1,t1,n1,dn1,geom->curve(primID));
if (Intersector().intersect(pre,ray,context,geom,primID,p0,t0,p1,t1,n0,dn0,n1,dn1,Epilog(ray,context,geomID,primID)))
return true;
mask &= movemask(tNear <= vfloat<M>(ray.tfar));
}
return false;
}
};
template<int M, int K>
struct CurveNiIntersectorK
{
typedef CurveNi<M> Primitive;
typedef Vec3vf<M> Vec3vfM;
typedef LinearSpace3<Vec3vfM>LinearSpace3vfM;
typedef CurvePrecalculationsK<K> Precalculations;
static __forceinline vbool<M> intersect(RayK<K>& ray, const size_t k, const Primitive& prim, vfloat<M>& tNear_o)
{
const size_t N = prim.N;
const vfloat4 offset_scale = vfloat4::loadu(prim.offset(N));
const Vec3fa offset = Vec3fa(offset_scale);
const Vec3fa scale = Vec3fa(shuffle<3,3,3,3>(offset_scale));
const Vec3fa ray_org(ray.org.x[k],ray.org.y[k],ray.org.z[k]);
const Vec3fa ray_dir(ray.dir.x[k],ray.dir.y[k],ray.dir.z[k]);
const Vec3fa org1 = (ray_org-offset)*scale;
const Vec3fa dir1 = ray_dir*scale;
const LinearSpace3vfM space(vfloat<M>::load(prim.bounds_vx_x(N)), vfloat<M>::load(prim.bounds_vx_y(N)), vfloat<M>::load(prim.bounds_vx_z(N)),
vfloat<M>::load(prim.bounds_vy_x(N)), vfloat<M>::load(prim.bounds_vy_y(N)), vfloat<M>::load(prim.bounds_vy_z(N)),
vfloat<M>::load(prim.bounds_vz_x(N)), vfloat<M>::load(prim.bounds_vz_y(N)), vfloat<M>::load(prim.bounds_vz_z(N)));
const Vec3vfM dir2 = xfmVector(space,Vec3vfM(dir1));
const Vec3vfM org2 = xfmPoint (space,Vec3vfM(org1));
const Vec3vfM rcp_dir2 = rcp_safe(dir2);
const vfloat<M> t_lower_x = (vfloat<M>::load(prim.bounds_vx_lower(N))-vfloat<M>(org2.x))*vfloat<M>(rcp_dir2.x);
const vfloat<M> t_upper_x = (vfloat<M>::load(prim.bounds_vx_upper(N))-vfloat<M>(org2.x))*vfloat<M>(rcp_dir2.x);
const vfloat<M> t_lower_y = (vfloat<M>::load(prim.bounds_vy_lower(N))-vfloat<M>(org2.y))*vfloat<M>(rcp_dir2.y);
const vfloat<M> t_upper_y = (vfloat<M>::load(prim.bounds_vy_upper(N))-vfloat<M>(org2.y))*vfloat<M>(rcp_dir2.y);
const vfloat<M> t_lower_z = (vfloat<M>::load(prim.bounds_vz_lower(N))-vfloat<M>(org2.z))*vfloat<M>(rcp_dir2.z);
const vfloat<M> t_upper_z = (vfloat<M>::load(prim.bounds_vz_upper(N))-vfloat<M>(org2.z))*vfloat<M>(rcp_dir2.z);
const vfloat<M> round_up (1.0f+3.0f*float(ulp));
const vfloat<M> round_down(1.0f-3.0f*float(ulp));
const vfloat<M> tNear = round_down*max(mini(t_lower_x,t_upper_x),mini(t_lower_y,t_upper_y),mini(t_lower_z,t_upper_z),vfloat<M>(ray.tnear()[k]));
const vfloat<M> tFar = round_up *min(maxi(t_lower_x,t_upper_x),maxi(t_lower_y,t_upper_y),maxi(t_lower_z,t_upper_z),vfloat<M>(ray.tfar[k]));
tNear_o = tNear;
return (vint<M>(step) < vint<M>(prim.N)) & (tNear <= tFar);
}
template<typename Intersector, typename Epilog>
static __forceinline void intersect_t(Precalculations& pre, RayHitK<K>& ray, const size_t k, IntersectContext* context, const Primitive& prim)
{
vfloat<M> tNear;
vbool<M> valid = intersect(ray,k,prim,tNear);
const size_t N = prim.N;
size_t mask = movemask(valid);
while (mask)
{
const size_t i = bscf(mask);
STAT3(normal.trav_prims,1,1,1);
const unsigned int geomID = prim.geomID(N);
const unsigned int primID = prim.primID(N)[i];
const CurveGeometry* geom = context->scene->get<CurveGeometry>(geomID);
Vec3ff a0,a1,a2,a3; geom->gather(a0,a1,a2,a3,geom->curve(primID));
size_t mask1 = mask;
const size_t i1 = bscf(mask1);
if (mask) {
const unsigned int primID1 = prim.primID(N)[i1];
geom->prefetchL1_vertices(geom->curve(primID1));
if (mask1) {
const size_t i2 = bsf(mask1);
const unsigned int primID2 = prim.primID(N)[i2];
geom->prefetchL2_vertices(geom->curve(primID2));
}
}
Intersector().intersect(pre,ray,k,context,geom,primID,a0,a1,a2,a3,Epilog(ray,k,context,geomID,primID));
mask &= movemask(tNear <= vfloat<M>(ray.tfar[k]));
}
}
template<typename Intersector, typename Epilog>
static __forceinline bool occluded_t(Precalculations& pre, RayK<K>& ray, const size_t k, IntersectContext* context, const Primitive& prim)
{
vfloat<M> tNear;
vbool<M> valid = intersect(ray,k,prim,tNear);
const size_t N = prim.N;
size_t mask = movemask(valid);
while (mask)
{
const size_t i = bscf(mask);
STAT3(shadow.trav_prims,1,1,1);
const unsigned int geomID = prim.geomID(N);
const unsigned int primID = prim.primID(N)[i];
const CurveGeometry* geom = context->scene->get<CurveGeometry>(geomID);
Vec3ff a0,a1,a2,a3; geom->gather(a0,a1,a2,a3,geom->curve(primID));
size_t mask1 = mask;
const size_t i1 = bscf(mask1);
if (mask) {
const unsigned int primID1 = prim.primID(N)[i1];
geom->prefetchL1_vertices(geom->curve(primID1));
if (mask1) {
const size_t i2 = bsf(mask1);
const unsigned int primID2 = prim.primID(N)[i2];
geom->prefetchL2_vertices(geom->curve(primID2));
}
}
if (Intersector().intersect(pre,ray,k,context,geom,primID,a0,a1,a2,a3,Epilog(ray,k,context,geomID,primID)))
return true;
mask &= movemask(tNear <= vfloat<M>(ray.tfar[k]));
}
return false;
}
template<typename Intersector, typename Epilog>
static __forceinline void intersect_n(Precalculations& pre, RayHitK<K>& ray, const size_t k, IntersectContext* context, const Primitive& prim)
{
vfloat<M> tNear;
vbool<M> valid = intersect(ray,k,prim,tNear);
const size_t N = prim.N;
size_t mask = movemask(valid);
while (mask)
{
const size_t i = bscf(mask);
STAT3(normal.trav_prims,1,1,1);
const unsigned int geomID = prim.geomID(N);
const unsigned int primID = prim.primID(N)[i];
const CurveGeometry* geom = context->scene->get<CurveGeometry>(geomID);
unsigned int vertexID = geom->curve(primID);
Vec3ff a0,a1,a2,a3; Vec3fa n0,n1,n2,n3; geom->gather(a0,a1,a2,a3,n0,n1,n2,n3,vertexID);
size_t mask1 = mask;
const size_t i1 = bscf(mask1);
if (mask) {
const unsigned int primID1 = prim.primID(N)[i1];
geom->prefetchL1_vertices(geom->curve(primID1));
if (mask1) {
const size_t i2 = bsf(mask1);
const unsigned int primID2 = prim.primID(N)[i2];
geom->prefetchL2_vertices(geom->curve(primID2));
}
}
Intersector().intersect(pre,ray,k,context,geom,primID,a0,a1,a2,a3,n0,n1,n2,n3,Epilog(ray,k,context,geomID,primID));
mask &= movemask(tNear <= vfloat<M>(ray.tfar[k]));
}
}
template<typename Intersector, typename Epilog>
static __forceinline bool occluded_n(Precalculations& pre, RayK<K>& ray, const size_t k, IntersectContext* context, const Primitive& prim)
{
vfloat<M> tNear;
vbool<M> valid = intersect(ray,k,prim,tNear);
const size_t N = prim.N;
size_t mask = movemask(valid);
while (mask)
{
const size_t i = bscf(mask);
STAT3(shadow.trav_prims,1,1,1);
const unsigned int geomID = prim.geomID(N);
const unsigned int primID = prim.primID(N)[i];
const CurveGeometry* geom = context->scene->get<CurveGeometry>(geomID);
unsigned int vertexID = geom->curve(primID);
Vec3ff a0,a1,a2,a3; Vec3fa n0,n1,n2,n3; geom->gather(a0,a1,a2,a3,n0,n1,n2,n3,vertexID);
size_t mask1 = mask;
const size_t i1 = bscf(mask1);
if (mask) {
const unsigned int primID1 = prim.primID(N)[i1];
geom->prefetchL1_vertices(geom->curve(primID1));
if (mask1) {
const size_t i2 = bsf(mask1);
const unsigned int primID2 = prim.primID(N)[i2];
geom->prefetchL2_vertices(geom->curve(primID2));
}
}
if (Intersector().intersect(pre,ray,k,context,geom,primID,a0,a1,a2,a3,n0,n1,n2,n3,Epilog(ray,k,context,geomID,primID)))
return true;
mask &= movemask(tNear <= vfloat<M>(ray.tfar[k]));
}
return false;
}
template<typename Intersector, typename Epilog>
static __forceinline void intersect_h(Precalculations& pre, RayHitK<K>& ray, const size_t k, IntersectContext* context, const Primitive& prim)
{
vfloat<M> tNear;
vbool<M> valid = intersect(ray,k,prim,tNear);
const size_t N = prim.N;
size_t mask = movemask(valid);
while (mask)
{
const size_t i = bscf(mask);
STAT3(normal.trav_prims,1,1,1);
const unsigned int geomID = prim.geomID(N);
const unsigned int primID = prim.primID(N)[i];
const CurveGeometry* geom = context->scene->get<CurveGeometry>(geomID);
Vec3ff p0,t0,p1,t1; geom->gather_hermite(p0,t0,p1,t1,geom->curve(primID));
Intersector().intersect(pre,ray,k,context,geom,primID,p0,t0,p1,t1,Epilog(ray,k,context,geomID,primID));
mask &= movemask(tNear <= vfloat<M>(ray.tfar[k]));
}
}
template<typename Intersector, typename Epilog>
static __forceinline bool occluded_h(Precalculations& pre, RayK<K>& ray, const size_t k, IntersectContext* context, const Primitive& prim)
{
vfloat<M> tNear;
vbool<M> valid = intersect(ray,k,prim,tNear);
const size_t N = prim.N;
size_t mask = movemask(valid);
while (mask)
{
const size_t i = bscf(mask);
STAT3(shadow.trav_prims,1,1,1);
const unsigned int geomID = prim.geomID(N);
const unsigned int primID = prim.primID(N)[i];
const CurveGeometry* geom = context->scene->get<CurveGeometry>(geomID);
Vec3ff p0,t0,p1,t1; geom->gather_hermite(p0,t0,p1,t1,geom->curve(primID));
if (Intersector().intersect(pre,ray,k,context,geom,primID,p0,t0,p1,t1,Epilog(ray,k,context,geomID,primID)))
return true;
mask &= movemask(tNear <= vfloat<M>(ray.tfar[k]));
}
return false;
}
template<typename Intersector, typename Epilog>
static __forceinline void intersect_hn(Precalculations& pre, RayHitK<K>& ray, const size_t k, IntersectContext* context, const Primitive& prim)
{
vfloat<M> tNear;
vbool<M> valid = intersect(ray,k,prim,tNear);
const size_t N = prim.N;
size_t mask = movemask(valid);
while (mask)
{
const size_t i = bscf(mask);
STAT3(normal.trav_prims,1,1,1);
const unsigned int geomID = prim.geomID(N);
const unsigned int primID = prim.primID(N)[i];
const CurveGeometry* geom = context->scene->get<CurveGeometry>(geomID);
Vec3ff p0,t0,p1,t1; Vec3fa n0,dn0,n1,dn1; geom->gather_hermite(p0,t0,n0,dn0,p1,t1,n1,dn1,geom->curve(primID));
Intersector().intersect(pre,ray,k,context,geom,primID,p0,t0,p1,t1,n0,dn0,n1,dn1,Epilog(ray,k,context,geomID,primID));
mask &= movemask(tNear <= vfloat<M>(ray.tfar[k]));
}
}
template<typename Intersector, typename Epilog>
static __forceinline bool occluded_hn(Precalculations& pre, RayK<K>& ray, const size_t k, IntersectContext* context, const Primitive& prim)
{
vfloat<M> tNear;
vbool<M> valid = intersect(ray,k,prim,tNear);
const size_t N = prim.N;
size_t mask = movemask(valid);
while (mask)
{
const size_t i = bscf(mask);
STAT3(shadow.trav_prims,1,1,1);
const unsigned int geomID = prim.geomID(N);
const unsigned int primID = prim.primID(N)[i];
const CurveGeometry* geom = context->scene->get<CurveGeometry>(geomID);
Vec3ff p0,t0,p1,t1; Vec3fa n0,dn0,n1,dn1; geom->gather_hermite(p0,t0,n0,dn0,p1,t1,n1,dn1,geom->curve(primID));
if (Intersector().intersect(pre,ray,k,context,geom,primID,p0,t0,p1,t1,n0,dn0,n1,dn1,Epilog(ray,k,context,geomID,primID)))
return true;
mask &= movemask(tNear <= vfloat<M>(ray.tfar[k]));
}
return false;
}
};
}
}
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