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Diffstat (limited to 'thirdparty/embree-aarch64/kernels/common/scene_curves.h')
| -rw-r--r-- | thirdparty/embree-aarch64/kernels/common/scene_curves.h | 341 |
1 files changed, 341 insertions, 0 deletions
diff --git a/thirdparty/embree-aarch64/kernels/common/scene_curves.h b/thirdparty/embree-aarch64/kernels/common/scene_curves.h new file mode 100644 index 0000000000..2649ab0e3e --- /dev/null +++ b/thirdparty/embree-aarch64/kernels/common/scene_curves.h @@ -0,0 +1,341 @@ +// Copyright 2009-2020 Intel Corporation +// SPDX-License-Identifier: Apache-2.0 + +#pragma once + +#include "default.h" +#include "geometry.h" +#include "buffer.h" + +namespace embree +{ + /*! represents an array of bicubic bezier curves */ + struct CurveGeometry : public Geometry + { + /*! type of this geometry */ + static const Geometry::GTypeMask geom_type = Geometry::MTY_CURVE4; + + public: + + /*! bezier curve construction */ + CurveGeometry (Device* device, Geometry::GType gtype); + + public: + void setMask(unsigned mask); + void setNumTimeSteps (unsigned int numTimeSteps); + void setVertexAttributeCount (unsigned int N); + void setBuffer(RTCBufferType type, unsigned int slot, RTCFormat format, const Ref<Buffer>& buffer, size_t offset, size_t stride, unsigned int num); + void* getBuffer(RTCBufferType type, unsigned int slot); + void updateBuffer(RTCBufferType type, unsigned int slot); + void commit(); + bool verify(); + void setTessellationRate(float N); + void setMaxRadiusScale(float s); + void addElementsToCount (GeometryCounts & counts) const; + + public: + + /*! returns the number of vertices */ + __forceinline size_t numVertices() const { + return vertices[0].size(); + } + + /*! returns the i'th curve */ + __forceinline const unsigned int& curve(size_t i) const { + return curves[i]; + } + + /*! returns i'th vertex of the first time step */ + __forceinline Vec3ff vertex(size_t i) const { + return vertices0[i]; + } + + /*! returns i'th normal of the first time step */ + __forceinline Vec3fa normal(size_t i) const { + return normals0[i]; + } + + /*! returns i'th tangent of the first time step */ + __forceinline Vec3ff tangent(size_t i) const { + return tangents0[i]; + } + + /*! returns i'th normal derivative of the first time step */ + __forceinline Vec3fa dnormal(size_t i) const { + return dnormals0[i]; + } + + /*! returns i'th radius of the first time step */ + __forceinline float radius(size_t i) const { + return vertices0[i].w; + } + + /*! returns i'th vertex of itime'th timestep */ + __forceinline Vec3ff vertex(size_t i, size_t itime) const { + return vertices[itime][i]; + } + + /*! returns i'th normal of itime'th timestep */ + __forceinline Vec3fa normal(size_t i, size_t itime) const { + return normals[itime][i]; + } + + /*! returns i'th tangent of itime'th timestep */ + __forceinline Vec3ff tangent(size_t i, size_t itime) const { + return tangents[itime][i]; + } + + /*! returns i'th normal derivative of itime'th timestep */ + __forceinline Vec3fa dnormal(size_t i, size_t itime) const { + return dnormals[itime][i]; + } + + /*! returns i'th radius of itime'th timestep */ + __forceinline float radius(size_t i, size_t itime) const { + return vertices[itime][i].w; + } + + /*! gathers the curve starting with i'th vertex */ + __forceinline void gather(Vec3ff& p0, Vec3ff& p1, Vec3ff& p2, Vec3ff& p3, size_t i) const + { + p0 = vertex(i+0); + p1 = vertex(i+1); + p2 = vertex(i+2); + p3 = vertex(i+3); + } + + /*! gathers the curve starting with i'th vertex of itime'th timestep */ + __forceinline void gather(Vec3ff& p0, Vec3ff& p1, Vec3ff& p2, Vec3ff& p3, size_t i, size_t itime) const + { + p0 = vertex(i+0,itime); + p1 = vertex(i+1,itime); + p2 = vertex(i+2,itime); + p3 = vertex(i+3,itime); + } + + /*! gathers the curve starting with i'th vertex */ + __forceinline void gather(Vec3ff& p0, Vec3ff& p1, Vec3ff& p2, Vec3ff& p3, Vec3fa& n0, Vec3fa& n1, Vec3fa& n2, Vec3fa& n3, size_t i) const + { + p0 = vertex(i+0); + p1 = vertex(i+1); + p2 = vertex(i+2); + p3 = vertex(i+3); + n0 = normal(i+0); + n1 = normal(i+1); + n2 = normal(i+2); + n3 = normal(i+3); + } + + /*! gathers the curve starting with i'th vertex of itime'th timestep */ + __forceinline void gather(Vec3ff& p0, Vec3ff& p1, Vec3ff& p2, Vec3ff& p3, Vec3fa& n0, Vec3fa& n1, Vec3fa& n2, Vec3fa& n3, size_t i, size_t itime) const + { + p0 = vertex(i+0,itime); + p1 = vertex(i+1,itime); + p2 = vertex(i+2,itime); + p3 = vertex(i+3,itime); + n0 = normal(i+0,itime); + n1 = normal(i+1,itime); + n2 = normal(i+2,itime); + n3 = normal(i+3,itime); + } + + /*! prefetches the curve starting with i'th vertex of itime'th timestep */ + __forceinline void prefetchL1_vertices(size_t i) const + { + prefetchL1(vertices0.getPtr(i)+0); + prefetchL1(vertices0.getPtr(i)+64); + } + + /*! prefetches the curve starting with i'th vertex of itime'th timestep */ + __forceinline void prefetchL2_vertices(size_t i) const + { + prefetchL2(vertices0.getPtr(i)+0); + prefetchL2(vertices0.getPtr(i)+64); + } + + /*! loads curve vertices for specified time */ + __forceinline void gather(Vec3ff& p0, Vec3ff& p1, Vec3ff& p2, Vec3ff& p3, size_t i, float time) const + { + float ftime; + const size_t itime = timeSegment(time, ftime); + + const float t0 = 1.0f - ftime; + const float t1 = ftime; + Vec3ff a0,a1,a2,a3; + gather(a0,a1,a2,a3,i,itime); + Vec3ff b0,b1,b2,b3; + gather(b0,b1,b2,b3,i,itime+1); + p0 = madd(Vec3ff(t0),a0,t1*b0); + p1 = madd(Vec3ff(t0),a1,t1*b1); + p2 = madd(Vec3ff(t0),a2,t1*b2); + p3 = madd(Vec3ff(t0),a3,t1*b3); + } + + /*! loads curve vertices for specified time */ + __forceinline void gather(Vec3ff& p0, Vec3ff& p1, Vec3ff& p2, Vec3ff& p3, Vec3fa& n0, Vec3fa& n1, Vec3fa& n2, Vec3fa& n3, size_t i, float time) const + { + float ftime; + const size_t itime = timeSegment(time, ftime); + + const float t0 = 1.0f - ftime; + const float t1 = ftime; + Vec3ff a0,a1,a2,a3; Vec3fa an0,an1,an2,an3; + gather(a0,a1,a2,a3,an0,an1,an2,an3,i,itime); + Vec3ff b0,b1,b2,b3; Vec3fa bn0,bn1,bn2,bn3; + gather(b0,b1,b2,b3,bn0,bn1,bn2,bn3,i,itime+1); + p0 = madd(Vec3ff(t0),a0,t1*b0); + p1 = madd(Vec3ff(t0),a1,t1*b1); + p2 = madd(Vec3ff(t0),a2,t1*b2); + p3 = madd(Vec3ff(t0),a3,t1*b3); + n0 = madd(Vec3ff(t0),an0,t1*bn0); + n1 = madd(Vec3ff(t0),an1,t1*bn1); + n2 = madd(Vec3ff(t0),an2,t1*bn2); + n3 = madd(Vec3ff(t0),an3,t1*bn3); + } + + template<typename SourceCurve3ff, typename SourceCurve3fa, typename TensorLinearCubicBezierSurface3fa> + __forceinline TensorLinearCubicBezierSurface3fa getNormalOrientedCurve(IntersectContext* context, const Vec3fa& ray_org, const unsigned int primID, const size_t itime) const + { + Vec3ff v0,v1,v2,v3; Vec3fa n0,n1,n2,n3; + unsigned int vertexID = curve(primID); + gather(v0,v1,v2,v3,n0,n1,n2,n3,vertexID,itime); + SourceCurve3ff ccurve(v0,v1,v2,v3); + SourceCurve3fa ncurve(n0,n1,n2,n3); + ccurve = enlargeRadiusToMinWidth(context,this,ray_org,ccurve); + return TensorLinearCubicBezierSurface3fa::fromCenterAndNormalCurve(ccurve,ncurve); + } + + template<typename SourceCurve3ff, typename SourceCurve3fa, typename TensorLinearCubicBezierSurface3fa> + __forceinline TensorLinearCubicBezierSurface3fa getNormalOrientedCurve(IntersectContext* context, const Vec3fa& ray_org, const unsigned int primID, const float time) const + { + float ftime; + const size_t itime = timeSegment(time, ftime); + const TensorLinearCubicBezierSurface3fa curve0 = getNormalOrientedCurve<SourceCurve3ff, SourceCurve3fa, TensorLinearCubicBezierSurface3fa>(context,ray_org,primID,itime+0); + const TensorLinearCubicBezierSurface3fa curve1 = getNormalOrientedCurve<SourceCurve3ff, SourceCurve3fa, TensorLinearCubicBezierSurface3fa>(context,ray_org,primID,itime+1); + return clerp(curve0,curve1,ftime); + } + + /*! gathers the hermite curve starting with i'th vertex */ + __forceinline void gather_hermite(Vec3ff& p0, Vec3ff& t0, Vec3ff& p1, Vec3ff& t1, size_t i) const + { + p0 = vertex (i+0); + p1 = vertex (i+1); + t0 = tangent(i+0); + t1 = tangent(i+1); + } + + /*! gathers the hermite curve starting with i'th vertex of itime'th timestep */ + __forceinline void gather_hermite(Vec3ff& p0, Vec3ff& t0, Vec3ff& p1, Vec3ff& t1, size_t i, size_t itime) const + { + p0 = vertex (i+0,itime); + p1 = vertex (i+1,itime); + t0 = tangent(i+0,itime); + t1 = tangent(i+1,itime); + } + + /*! loads curve vertices for specified time */ + __forceinline void gather_hermite(Vec3ff& p0, Vec3ff& t0, Vec3ff& p1, Vec3ff& t1, size_t i, float time) const + { + float ftime; + const size_t itime = timeSegment(time, ftime); + const float f0 = 1.0f - ftime, f1 = ftime; + Vec3ff ap0,at0,ap1,at1; + gather_hermite(ap0,at0,ap1,at1,i,itime); + Vec3ff bp0,bt0,bp1,bt1; + gather_hermite(bp0,bt0,bp1,bt1,i,itime+1); + p0 = madd(Vec3ff(f0),ap0,f1*bp0); + t0 = madd(Vec3ff(f0),at0,f1*bt0); + p1 = madd(Vec3ff(f0),ap1,f1*bp1); + t1 = madd(Vec3ff(f0),at1,f1*bt1); + } + + /*! gathers the hermite curve starting with i'th vertex */ + __forceinline void gather_hermite(Vec3ff& p0, Vec3ff& t0, Vec3fa& n0, Vec3fa& dn0, Vec3ff& p1, Vec3ff& t1, Vec3fa& n1, Vec3fa& dn1, size_t i) const + { + p0 = vertex (i+0); + p1 = vertex (i+1); + t0 = tangent(i+0); + t1 = tangent(i+1); + n0 = normal(i+0); + n1 = normal(i+1); + dn0 = dnormal(i+0); + dn1 = dnormal(i+1); + } + + /*! gathers the hermite curve starting with i'th vertex of itime'th timestep */ + __forceinline void gather_hermite(Vec3ff& p0, Vec3ff& t0, Vec3fa& n0, Vec3fa& dn0, Vec3ff& p1, Vec3ff& t1, Vec3fa& n1, Vec3fa& dn1, size_t i, size_t itime) const + { + p0 = vertex (i+0,itime); + p1 = vertex (i+1,itime); + t0 = tangent(i+0,itime); + t1 = tangent(i+1,itime); + n0 = normal(i+0,itime); + n1 = normal(i+1,itime); + dn0 = dnormal(i+0,itime); + dn1 = dnormal(i+1,itime); + } + + /*! loads curve vertices for specified time */ + __forceinline void gather_hermite(Vec3ff& p0, Vec3fa& t0, Vec3fa& n0, Vec3fa& dn0, Vec3ff& p1, Vec3fa& t1, Vec3fa& n1, Vec3fa& dn1, size_t i, float time) const + { + float ftime; + const size_t itime = timeSegment(time, ftime); + const float f0 = 1.0f - ftime, f1 = ftime; + Vec3ff ap0,at0,ap1,at1; Vec3fa an0,adn0,an1,adn1; + gather_hermite(ap0,at0,an0,adn0,ap1,at1,an1,adn1,i,itime); + Vec3ff bp0,bt0,bp1,bt1; Vec3fa bn0,bdn0,bn1,bdn1; + gather_hermite(bp0,bt0,bn0,bdn0,bp1,bt1,bn1,bdn1,i,itime+1); + p0 = madd(Vec3ff(f0),ap0,f1*bp0); + t0 = madd(Vec3ff(f0),at0,f1*bt0); + n0 = madd(Vec3ff(f0),an0,f1*bn0); + dn0= madd(Vec3ff(f0),adn0,f1*bdn0); + p1 = madd(Vec3ff(f0),ap1,f1*bp1); + t1 = madd(Vec3ff(f0),at1,f1*bt1); + n1 = madd(Vec3ff(f0),an1,f1*bn1); + dn1= madd(Vec3ff(f0),adn1,f1*bdn1); + } + + template<typename SourceCurve3ff, typename SourceCurve3fa, typename TensorLinearCubicBezierSurface3fa> + __forceinline TensorLinearCubicBezierSurface3fa getNormalOrientedHermiteCurve(IntersectContext* context, const Vec3fa& ray_org, const unsigned int primID, const size_t itime) const + { + Vec3ff v0,t0,v1,t1; Vec3fa n0,dn0,n1,dn1; + unsigned int vertexID = curve(primID); + gather_hermite(v0,t0,n0,dn0,v1,t1,n1,dn1,vertexID,itime); + + SourceCurve3ff ccurve(v0,t0,v1,t1); + SourceCurve3fa ncurve(n0,dn0,n1,dn1); + ccurve = enlargeRadiusToMinWidth(context,this,ray_org,ccurve); + return TensorLinearCubicBezierSurface3fa::fromCenterAndNormalCurve(ccurve,ncurve); + } + + template<typename SourceCurve3ff, typename SourceCurve3fa, typename TensorLinearCubicBezierSurface3fa> + __forceinline TensorLinearCubicBezierSurface3fa getNormalOrientedHermiteCurve(IntersectContext* context, const Vec3fa& ray_org, const unsigned int primID, const float time) const + { + float ftime; + const size_t itime = timeSegment(time, ftime); + const TensorLinearCubicBezierSurface3fa curve0 = getNormalOrientedHermiteCurve<SourceCurve3ff, SourceCurve3fa, TensorLinearCubicBezierSurface3fa>(context, ray_org, primID,itime+0); + const TensorLinearCubicBezierSurface3fa curve1 = getNormalOrientedHermiteCurve<SourceCurve3ff, SourceCurve3fa, TensorLinearCubicBezierSurface3fa>(context, ray_org, primID,itime+1); + return clerp(curve0,curve1,ftime); + } + + private: + void resizeBuffers(unsigned int numSteps); + + public: + BufferView<unsigned int> curves; //!< array of curve indices + BufferView<Vec3ff> vertices0; //!< fast access to first vertex buffer + BufferView<Vec3fa> normals0; //!< fast access to first normal buffer + BufferView<Vec3ff> tangents0; //!< fast access to first tangent buffer + BufferView<Vec3fa> dnormals0; //!< fast access to first normal derivative buffer + vector<BufferView<Vec3ff>> vertices; //!< vertex array for each timestep + vector<BufferView<Vec3fa>> normals; //!< normal array for each timestep + vector<BufferView<Vec3ff>> tangents; //!< tangent array for each timestep + vector<BufferView<Vec3fa>> dnormals; //!< normal derivative array for each timestep + BufferView<char> flags; //!< start, end flag per segment + vector<BufferView<char>> vertexAttribs; //!< user buffers + int tessellationRate; //!< tessellation rate for flat curve + float maxRadiusScale = 1.0; //!< maximal min-width scaling of curve radii + }; + + DECLARE_ISA_FUNCTION(CurveGeometry*, createCurves, Device* COMMA Geometry::GType); +} |