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Diffstat (limited to 'thirdparty/embree-aarch64/kernels/geometry/cone.h')
| -rw-r--r-- | thirdparty/embree-aarch64/kernels/geometry/cone.h | 321 |
1 files changed, 0 insertions, 321 deletions
diff --git a/thirdparty/embree-aarch64/kernels/geometry/cone.h b/thirdparty/embree-aarch64/kernels/geometry/cone.h deleted file mode 100644 index 961ef86160..0000000000 --- a/thirdparty/embree-aarch64/kernels/geometry/cone.h +++ /dev/null @@ -1,321 +0,0 @@ -// Copyright 2009-2020 Intel Corporation -// SPDX-License-Identifier: Apache-2.0 - -#pragma once - -#include "../common/ray.h" - -namespace embree -{ - namespace isa - { - struct Cone - { - const Vec3fa p0; //!< start position of cone - const Vec3fa p1; //!< end position of cone - const float r0; //!< start radius of cone - const float r1; //!< end radius of cone - - __forceinline Cone(const Vec3fa& p0, const float r0, const Vec3fa& p1, const float r1) - : p0(p0), p1(p1), r0(r0), r1(r1) {} - - __forceinline bool intersect(const Vec3fa& org, const Vec3fa& dir, - BBox1f& t_o, - float& u0_o, Vec3fa& Ng0_o, - float& u1_o, Vec3fa& Ng1_o) const - { - /* calculate quadratic equation to solve */ - const Vec3fa v0 = p0-org; - const Vec3fa v1 = p1-org; - - const float rl = rcp_length(v1-v0); - const Vec3fa P0 = v0, dP = (v1-v0)*rl; - const float dr = (r1-r0)*rl; - const Vec3fa O = -P0, dO = dir; - - const float dOdO = dot(dO,dO); - const float OdO = dot(dO,O); - const float OO = dot(O,O); - const float dOz = dot(dP,dO); - const float Oz = dot(dP,O); - - const float R = r0 + Oz*dr; - const float A = dOdO - sqr(dOz) * (1.0f+sqr(dr)); - const float B = 2.0f * (OdO - dOz*(Oz + R*dr)); - const float C = OO - (sqr(Oz) + sqr(R)); - - /* we miss the cone if determinant is smaller than zero */ - const float D = B*B - 4.0f*A*C; - if (D < 0.0f) return false; - - /* special case for rays that are "parallel" to the cone */ - const float eps = float(1<<8)*float(ulp)*max(abs(dOdO),abs(sqr(dOz))); - if (unlikely(abs(A) < eps)) - { - /* cylinder case */ - if (abs(dr) < 16.0f*float(ulp)) { - if (C <= 0.0f) { t_o = BBox1f(neg_inf,pos_inf); return true; } - else { t_o = BBox1f(pos_inf,neg_inf); return false; } - } - - /* cone case */ - else - { - /* if we hit the negative cone there cannot be a hit */ - const float t = -C/B; - const float z0 = Oz+t*dOz; - const float z0r = r0+z0*dr; - if (z0r < 0.0f) return false; - - /* test if we start inside or outside the cone */ - if (dOz*dr > 0.0f) t_o = BBox1f(t,pos_inf); - else t_o = BBox1f(neg_inf,t); - } - } - - /* standard case for "non-parallel" rays */ - else - { - const float Q = sqrt(D); - const float rcp_2A = rcp(2.0f*A); - t_o.lower = (-B-Q)*rcp_2A; - t_o.upper = (-B+Q)*rcp_2A; - - /* standard case where both hits are on same cone */ - if (likely(A > 0.0f)) { - const float z0 = Oz+t_o.lower*dOz; - const float z0r = r0+z0*dr; - if (z0r < 0.0f) return false; - } - - /* special case where the hits are on the positive and negative cone */ - else - { - /* depending on the ray direction and the open direction - * of the cone we have a hit from inside or outside the - * cone */ - if (dOz*dr > 0) t_o.upper = pos_inf; - else t_o.lower = neg_inf; - } - } - - /* calculates u and Ng for near hit */ - { - u0_o = (Oz+t_o.lower*dOz)*rl; - const Vec3fa Pr = t_o.lower*dir; - const Vec3fa Pl = v0 + u0_o*(v1-v0); - const Vec3fa R = normalize(Pr-Pl); - const Vec3fa U = (p1-p0)+(r1-r0)*R; - const Vec3fa V = cross(p1-p0,R); - Ng0_o = cross(V,U); - } - - /* calculates u and Ng for far hit */ - { - u1_o = (Oz+t_o.upper*dOz)*rl; - const Vec3fa Pr = t_o.upper*dir; - const Vec3fa Pl = v0 + u1_o*(v1-v0); - const Vec3fa R = normalize(Pr-Pl); - const Vec3fa U = (p1-p0)+(r1-r0)*R; - const Vec3fa V = cross(p1-p0,R); - Ng1_o = cross(V,U); - } - return true; - } - - __forceinline bool intersect(const Vec3fa& org, const Vec3fa& dir, BBox1f& t_o) const - { - float u0_o; Vec3fa Ng0_o; float u1_o; Vec3fa Ng1_o; - return intersect(org,dir,t_o,u0_o,Ng0_o,u1_o,Ng1_o); - } - - static bool verify(const size_t id, const Cone& cone, const Ray& ray, bool shouldhit, const float t0, const float t1) - { - float eps = 0.001f; - BBox1f t; bool hit; - hit = cone.intersect(ray.org,ray.dir,t); - - bool failed = hit != shouldhit; - if (shouldhit) failed |= std::isinf(t0) ? t0 != t.lower : (t0 == -1E6) ? t.lower > -1E6f : abs(t0-t.lower) > eps; - if (shouldhit) failed |= std::isinf(t1) ? t1 != t.upper : (t1 == +1E6) ? t.upper < +1E6f : abs(t1-t.upper) > eps; - if (!failed) return true; - embree_cout << "Cone test " << id << " failed: cone = " << cone << ", ray = " << ray << ", hit = " << hit << ", t = " << t << embree_endl; - return false; - } - - /* verify cone class */ - static bool verify() - { - bool passed = true; - const Cone cone0(Vec3fa(0.0f,0.0f,0.0f),0.0f,Vec3fa(1.0f,0.0f,0.0f),1.0f); - passed &= verify(0,cone0,Ray(Vec3fa(-2.0f,1.0f,0.0f),Vec3fa(+1.0f,+0.0f,+0.0f),0.0f,float(inf)),true,3.0f,pos_inf); - passed &= verify(1,cone0,Ray(Vec3fa(+2.0f,1.0f,0.0f),Vec3fa(-1.0f,+0.0f,+0.0f),0.0f,float(inf)),true,neg_inf,1.0f); - passed &= verify(2,cone0,Ray(Vec3fa(-1.0f,0.0f,2.0f),Vec3fa(+0.0f,+0.0f,-1.0f),0.0f,float(inf)),false,0.0f,0.0f); - passed &= verify(3,cone0,Ray(Vec3fa(+1.0f,0.0f,2.0f),Vec3fa(+0.0f,+0.0f,-1.0f),0.0f,float(inf)),true,1.0f,3.0f); - passed &= verify(4,cone0,Ray(Vec3fa(-1.0f,0.0f,0.0f),Vec3fa(+1.0f,+0.0f,+0.0f),0.0f,float(inf)),true,1.0f,pos_inf); - passed &= verify(5,cone0,Ray(Vec3fa(+1.0f,0.0f,0.0f),Vec3fa(-1.0f,+0.0f,+0.0f),0.0f,float(inf)),true,neg_inf,1.0f); - passed &= verify(6,cone0,Ray(Vec3fa(+0.0f,0.0f,1.0f),Vec3fa(+0.0f,+0.0f,-1.0f),0.0f,float(inf)),true,1.0f,1.0f); - passed &= verify(7,cone0,Ray(Vec3fa(+0.0f,1.0f,0.0f),Vec3fa(-1.0f,-1.0f,+0.0f),0.0f,float(inf)),false,0.0f,0.0f); - passed &= verify(8,cone0,Ray(Vec3fa(+0.0f,1.0f,0.0f),Vec3fa(+1.0f,-1.0f,+0.0f),0.0f,float(inf)),true,0.5f,+1E6); - passed &= verify(9,cone0,Ray(Vec3fa(+0.0f,1.0f,0.0f),Vec3fa(-1.0f,+1.0f,+0.0f),0.0f,float(inf)),true,-1E6,-0.5f); - const Cone cone1(Vec3fa(0.0f,0.0f,0.0f),1.0f,Vec3fa(1.0f,0.0f,0.0f),0.0f); - passed &= verify(10,cone1,Ray(Vec3fa(-2.0f,1.0f,0.0f),Vec3fa(+1.0f,+0.0f,+0.0f),0.0f,float(inf)),true,neg_inf,2.0f); - passed &= verify(11,cone1,Ray(Vec3fa(-1.0f,0.0f,2.0f),Vec3fa(+0.0f,+0.0f,-1.0f),0.0f,float(inf)),true,0.0f,4.0f); - const Cone cylinder(Vec3fa(0.0f,0.0f,0.0f),1.0f,Vec3fa(1.0f,0.0f,0.0f),1.0f); - passed &= verify(12,cylinder,Ray(Vec3fa(-2.0f,1.0f,0.0f),Vec3fa( 0.0f,-1.0f,+0.0f),0.0f,float(inf)),true,0.0f,2.0f); - passed &= verify(13,cylinder,Ray(Vec3fa(+2.0f,1.0f,0.0f),Vec3fa( 0.0f,-1.0f,+0.0f),0.0f,float(inf)),true,0.0f,2.0f); - passed &= verify(14,cylinder,Ray(Vec3fa(+2.0f,1.0f,2.0f),Vec3fa( 0.0f,-1.0f,+0.0f),0.0f,float(inf)),false,0.0f,0.0f); - passed &= verify(15,cylinder,Ray(Vec3fa(+0.0f,0.0f,0.0f),Vec3fa( 1.0f, 0.0f,+0.0f),0.0f,float(inf)),true,neg_inf,pos_inf); - passed &= verify(16,cylinder,Ray(Vec3fa(+0.0f,0.0f,0.0f),Vec3fa(-1.0f, 0.0f,+0.0f),0.0f,float(inf)),true,neg_inf,pos_inf); - passed &= verify(17,cylinder,Ray(Vec3fa(+0.0f,2.0f,0.0f),Vec3fa( 1.0f, 0.0f,+0.0f),0.0f,float(inf)),false,pos_inf,neg_inf); - passed &= verify(18,cylinder,Ray(Vec3fa(+0.0f,2.0f,0.0f),Vec3fa(-1.0f, 0.0f,+0.0f),0.0f,float(inf)),false,pos_inf,neg_inf); - return passed; - } - - /*! output operator */ - friend __forceinline embree_ostream operator<<(embree_ostream cout, const Cone& c) { - return cout << "Cone { p0 = " << c.p0 << ", r0 = " << c.r0 << ", p1 = " << c.p1 << ", r1 = " << c.r1 << "}"; - } - }; - - template<int N> - struct ConeN - { - typedef Vec3<vfloat<N>> Vec3vfN; - - const Vec3vfN p0; //!< start position of cone - const Vec3vfN p1; //!< end position of cone - const vfloat<N> r0; //!< start radius of cone - const vfloat<N> r1; //!< end radius of cone - - __forceinline ConeN(const Vec3vfN& p0, const vfloat<N>& r0, const Vec3vfN& p1, const vfloat<N>& r1) - : p0(p0), p1(p1), r0(r0), r1(r1) {} - - __forceinline Cone operator[] (const size_t i) const - { - assert(i<N); - return Cone(Vec3fa(p0.x[i],p0.y[i],p0.z[i]),r0[i],Vec3fa(p1.x[i],p1.y[i],p1.z[i]),r1[i]); - } - - __forceinline vbool<N> intersect(const Vec3fa& org, const Vec3fa& dir, - BBox<vfloat<N>>& t_o, - vfloat<N>& u0_o, Vec3vfN& Ng0_o, - vfloat<N>& u1_o, Vec3vfN& Ng1_o) const - { - /* calculate quadratic equation to solve */ - const Vec3vfN v0 = p0-Vec3vfN(org); - const Vec3vfN v1 = p1-Vec3vfN(org); - - const vfloat<N> rl = rcp_length(v1-v0); - const Vec3vfN P0 = v0, dP = (v1-v0)*rl; - const vfloat<N> dr = (r1-r0)*rl; - const Vec3vfN O = -P0, dO = dir; - - const vfloat<N> dOdO = dot(dO,dO); - const vfloat<N> OdO = dot(dO,O); - const vfloat<N> OO = dot(O,O); - const vfloat<N> dOz = dot(dP,dO); - const vfloat<N> Oz = dot(dP,O); - - const vfloat<N> R = r0 + Oz*dr; - const vfloat<N> A = dOdO - sqr(dOz) * (vfloat<N>(1.0f)+sqr(dr)); - const vfloat<N> B = 2.0f * (OdO - dOz*(Oz + R*dr)); - const vfloat<N> C = OO - (sqr(Oz) + sqr(R)); - - /* we miss the cone if determinant is smaller than zero */ - const vfloat<N> D = B*B - 4.0f*A*C; - vbool<N> valid = D >= 0.0f; - if (none(valid)) return valid; - - /* special case for rays that are "parallel" to the cone */ - const vfloat<N> eps = float(1<<8)*float(ulp)*max(abs(dOdO),abs(sqr(dOz))); - const vbool<N> validt = valid & (abs(A) < eps); - const vbool<N> validf = valid & !(abs(A) < eps); - if (unlikely(any(validt))) - { - const vboolx validtt = validt & (abs(dr) < 16.0f*float(ulp)); - const vboolx validtf = validt & (abs(dr) >= 16.0f*float(ulp)); - - /* cylinder case */ - if (unlikely(any(validtt))) - { - t_o.lower = select(validtt, select(C <= 0.0f, vfloat<N>(neg_inf), vfloat<N>(pos_inf)), t_o.lower); - t_o.upper = select(validtt, select(C <= 0.0f, vfloat<N>(pos_inf), vfloat<N>(neg_inf)), t_o.upper); - valid &= !validtt | C <= 0.0f; - } - - /* cone case */ - if (any(validtf)) - { - /* if we hit the negative cone there cannot be a hit */ - const vfloat<N> t = -C/B; - const vfloat<N> z0 = Oz+t*dOz; - const vfloat<N> z0r = r0+z0*dr; - valid &= !validtf | z0r >= 0.0f; - - /* test if we start inside or outside the cone */ - t_o.lower = select(validtf, select(dOz*dr > 0.0f, t, vfloat<N>(neg_inf)), t_o.lower); - t_o.upper = select(validtf, select(dOz*dr > 0.0f, vfloat<N>(pos_inf), t), t_o.upper); - } - } - - /* standard case for "non-parallel" rays */ - if (likely(any(validf))) - { - const vfloat<N> Q = sqrt(D); - const vfloat<N> rcp_2A = 0.5f*rcp(A); - t_o.lower = select(validf, (-B-Q)*rcp_2A, t_o.lower); - t_o.upper = select(validf, (-B+Q)*rcp_2A, t_o.upper); - - /* standard case where both hits are on same cone */ - const vbool<N> validft = validf & A>0.0f; - const vbool<N> validff = validf & !(A>0.0f); - if (any(validft)) { - const vfloat<N> z0 = Oz+t_o.lower*dOz; - const vfloat<N> z0r = r0+z0*dr; - valid &= !validft | z0r >= 0.0f; - } - - /* special case where the hits are on the positive and negative cone */ - if (any(validff)) { - /* depending on the ray direction and the open direction - * of the cone we have a hit from inside or outside the - * cone */ - t_o.lower = select(validff, select(dOz*dr > 0.0f, t_o.lower, float(neg_inf)), t_o.lower); - t_o.upper = select(validff, select(dOz*dr > 0.0f, float(pos_inf), t_o.upper), t_o.upper); - } - } - - /* calculates u and Ng for near hit */ - { - u0_o = (Oz+t_o.lower*dOz)*rl; - const Vec3vfN Pr = t_o.lower*Vec3vfN(dir); - const Vec3vfN Pl = v0 + u0_o*(v1-v0); - const Vec3vfN R = normalize(Pr-Pl); - const Vec3vfN U = (p1-p0)+(r1-r0)*R; - const Vec3vfN V = cross(p1-p0,R); - Ng0_o = cross(V,U); - } - - /* calculates u and Ng for far hit */ - { - u1_o = (Oz+t_o.upper*dOz)*rl; - const Vec3vfN Pr = t_o.lower*Vec3vfN(dir); - const Vec3vfN Pl = v0 + u1_o*(v1-v0); - const Vec3vfN R = normalize(Pr-Pl); - const Vec3vfN U = (p1-p0)+(r1-r0)*R; - const Vec3vfN V = cross(p1-p0,R); - Ng1_o = cross(V,U); - } - return valid; - } - - __forceinline vbool<N> intersect(const Vec3fa& org, const Vec3fa& dir, BBox<vfloat<N>>& t_o) const - { - vfloat<N> u0_o; Vec3vfN Ng0_o; vfloat<N> u1_o; Vec3vfN Ng1_o; - return intersect(org,dir,t_o,u0_o,Ng0_o,u1_o,Ng1_o); - } - }; - } -} - |