diff options
Diffstat (limited to 'thirdparty/embree/kernels/geometry/curveNi.h')
| -rw-r--r-- | thirdparty/embree/kernels/geometry/curveNi.h | 222 |
1 files changed, 222 insertions, 0 deletions
diff --git a/thirdparty/embree/kernels/geometry/curveNi.h b/thirdparty/embree/kernels/geometry/curveNi.h new file mode 100644 index 0000000000..6366a6fb9c --- /dev/null +++ b/thirdparty/embree/kernels/geometry/curveNi.h @@ -0,0 +1,222 @@ +// Copyright 2009-2021 Intel Corporation +// SPDX-License-Identifier: Apache-2.0 + +#pragma once + +#include "primitive.h" +#include "curve_intersector_precalculations.h" + +namespace embree +{ + template<int M> + struct CurveNi + { + 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: + + /* Returns maximum number of stored primitives */ + static __forceinline size_t max_size() { return M; } + + /* Returns required number of primitive blocks for N primitives */ + static __forceinline size_t blocks(size_t N) { return (N+M-1)/M; } + + static __forceinline size_t bytes(size_t N) + { + const size_t f = N/M, r = N%M; + static_assert(sizeof(CurveNi) == 22+25*M, "internal data layout issue"); + return f*sizeof(CurveNi) + (r!=0)*(22 + 25*r); + } + + public: + + /*! Default constructor. */ + __forceinline CurveNi () {} + + /*! fill curve from curve list */ + __forceinline void fill(const PrimRef* prims, size_t& begin, size_t _end, Scene* scene) + { + size_t end = min(begin+M,_end); + N = (unsigned char)(end-begin); + const unsigned int geomID0 = prims[begin].geomID(); + this->geomID(N) = geomID0; + ty = (unsigned char) scene->get(geomID0)->getType(); + + /* encode all primitives */ + BBox3fa bounds = empty; + for (size_t i=0; i<N; i++) + { + const PrimRef& prim = prims[begin+i]; + const unsigned int geomID = prim.geomID(); assert(geomID == geomID0); + const unsigned int primID = prim.primID(); + bounds.extend(scene->get(geomID)->vbounds(primID)); + } + + /* calculate offset and scale */ + Vec3fa loffset = bounds.lower; + float lscale = reduce_min(256.0f/(bounds.size()*sqrt(3.0f))); + if (bounds.size() == Vec3fa(zero)) lscale = 0.0f; + *this->offset(N) = loffset; + *this->scale(N) = lscale; + + /* encode all primitives */ + for (size_t i=0; i<M && begin<end; i++, begin++) + { + const PrimRef& prim = prims[begin]; + const unsigned int geomID = prim.geomID(); + const unsigned int primID = prim.primID(); + const LinearSpace3fa space2 = scene->get(geomID)->computeAlignedSpace(primID); + + const LinearSpace3fa space3(trunc(126.0f*space2.vx),trunc(126.0f*space2.vy),trunc(126.0f*space2.vz)); + const BBox3fa bounds = scene->get(geomID)->vbounds(loffset,lscale,max(length(space3.vx),length(space3.vy),length(space3.vz)),space3.transposed(),primID); + + bounds_vx_x(N)[i] = (char) space3.vx.x; + bounds_vx_y(N)[i] = (char) space3.vx.y; + bounds_vx_z(N)[i] = (char) space3.vx.z; + bounds_vx_lower(N)[i] = (short) clamp(floor(bounds.lower.x),-32767.0f,32767.0f); + bounds_vx_upper(N)[i] = (short) clamp(ceil (bounds.upper.x),-32767.0f,32767.0f); + assert(-32767.0f <= floor(bounds.lower.x) && floor(bounds.lower.x) <= 32767.0f); + assert(-32767.0f <= ceil (bounds.upper.x) && ceil (bounds.upper.x) <= 32767.0f); + + bounds_vy_x(N)[i] = (char) space3.vy.x; + bounds_vy_y(N)[i] = (char) space3.vy.y; + bounds_vy_z(N)[i] = (char) space3.vy.z; + bounds_vy_lower(N)[i] = (short) clamp(floor(bounds.lower.y),-32767.0f,32767.0f); + bounds_vy_upper(N)[i] = (short) clamp(ceil (bounds.upper.y),-32767.0f,32767.0f); + assert(-32767.0f <= floor(bounds.lower.y) && floor(bounds.lower.y) <= 32767.0f); + assert(-32767.0f <= ceil (bounds.upper.y) && ceil (bounds.upper.y) <= 32767.0f); + + bounds_vz_x(N)[i] = (char) space3.vz.x; + bounds_vz_y(N)[i] = (char) space3.vz.y; + bounds_vz_z(N)[i] = (char) space3.vz.z; + bounds_vz_lower(N)[i] = (short) clamp(floor(bounds.lower.z),-32767.0f,32767.0f); + bounds_vz_upper(N)[i] = (short) clamp(ceil (bounds.upper.z),-32767.0f,32767.0f); + assert(-32767.0f <= floor(bounds.lower.z) && floor(bounds.lower.z) <= 32767.0f); + assert(-32767.0f <= ceil (bounds.upper.z) && ceil (bounds.upper.z) <= 32767.0f); + + this->primID(N)[i] = primID; + } + } + + 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 = CurveNi::blocks(set.size()); + size_t numbytes = CurveNi::bytes(set.size()); + CurveNi* accel = (CurveNi*) alloc.malloc1(numbytes,BVH::byteAlignment); + for (size_t i=0; i<items; i++) { + accel[i].fill(prims,start,set.end(),bvh->scene); + } + return bvh->encodeLeaf((char*)accel,items); + }; + + public: + + // 27.6 - 46 bytes per primitive + unsigned char ty; + unsigned char N; + unsigned char data[4+25*M+16]; + + /* + struct Layout + { + unsigned int geomID; + unsigned int primID[N]; + + char bounds_vx_x[N]; + char bounds_vx_y[N]; + char bounds_vx_z[N]; + short bounds_vx_lower[N]; + short bounds_vx_upper[N]; + + char bounds_vy_x[N]; + char bounds_vy_y[N]; + char bounds_vy_z[N]; + short bounds_vy_lower[N]; + short bounds_vy_upper[N]; + + char bounds_vz_x[N]; + char bounds_vz_y[N]; + char bounds_vz_z[N]; + short bounds_vz_lower[N]; + short bounds_vz_upper[N]; + + Vec3f offset; + float scale; + }; + */ + + __forceinline unsigned int& geomID(size_t N) { return *(unsigned int*)((char*)this+2); } + __forceinline const unsigned int& geomID(size_t N) const { return *(unsigned int*)((char*)this+2); } + + __forceinline unsigned int* primID(size_t N) { return (unsigned int*)((char*)this+6); } + __forceinline const unsigned int* primID(size_t N) const { return (unsigned int*)((char*)this+6); } + + __forceinline char* bounds_vx_x(size_t N) { return (char*)((char*)this+6+4*N); } + __forceinline const char* bounds_vx_x(size_t N) const { return (char*)((char*)this+6+4*N); } + + __forceinline char* bounds_vx_y(size_t N) { return (char*)((char*)this+6+5*N); } + __forceinline const char* bounds_vx_y(size_t N) const { return (char*)((char*)this+6+5*N); } + + __forceinline char* bounds_vx_z(size_t N) { return (char*)((char*)this+6+6*N); } + __forceinline const char* bounds_vx_z(size_t N) const { return (char*)((char*)this+6+6*N); } + + __forceinline short* bounds_vx_lower(size_t N) { return (short*)((char*)this+6+7*N); } + __forceinline const short* bounds_vx_lower(size_t N) const { return (short*)((char*)this+6+7*N); } + + __forceinline short* bounds_vx_upper(size_t N) { return (short*)((char*)this+6+9*N); } + __forceinline const short* bounds_vx_upper(size_t N) const { return (short*)((char*)this+6+9*N); } + + __forceinline char* bounds_vy_x(size_t N) { return (char*)((char*)this+6+11*N); } + __forceinline const char* bounds_vy_x(size_t N) const { return (char*)((char*)this+6+11*N); } + + __forceinline char* bounds_vy_y(size_t N) { return (char*)((char*)this+6+12*N); } + __forceinline const char* bounds_vy_y(size_t N) const { return (char*)((char*)this+6+12*N); } + + __forceinline char* bounds_vy_z(size_t N) { return (char*)((char*)this+6+13*N); } + __forceinline const char* bounds_vy_z(size_t N) const { return (char*)((char*)this+6+13*N); } + + __forceinline short* bounds_vy_lower(size_t N) { return (short*)((char*)this+6+14*N); } + __forceinline const short* bounds_vy_lower(size_t N) const { return (short*)((char*)this+6+14*N); } + + __forceinline short* bounds_vy_upper(size_t N) { return (short*)((char*)this+6+16*N); } + __forceinline const short* bounds_vy_upper(size_t N) const { return (short*)((char*)this+6+16*N); } + + __forceinline char* bounds_vz_x(size_t N) { return (char*)((char*)this+6+18*N); } + __forceinline const char* bounds_vz_x(size_t N) const { return (char*)((char*)this+6+18*N); } + + __forceinline char* bounds_vz_y(size_t N) { return (char*)((char*)this+6+19*N); } + __forceinline const char* bounds_vz_y(size_t N) const { return (char*)((char*)this+6+19*N); } + + __forceinline char* bounds_vz_z(size_t N) { return (char*)((char*)this+6+20*N); } + __forceinline const char* bounds_vz_z(size_t N) const { return (char*)((char*)this+6+20*N); } + + __forceinline short* bounds_vz_lower(size_t N) { return (short*)((char*)this+6+21*N); } + __forceinline const short* bounds_vz_lower(size_t N) const { return (short*)((char*)this+6+21*N); } + + __forceinline short* bounds_vz_upper(size_t N) { return (short*)((char*)this+6+23*N); } + __forceinline const short* bounds_vz_upper(size_t N) const { return (short*)((char*)this+6+23*N); } + + __forceinline Vec3f* offset(size_t N) { return (Vec3f*)((char*)this+6+25*N); } + __forceinline const Vec3f* offset(size_t N) const { return (Vec3f*)((char*)this+6+25*N); } + + __forceinline float* scale(size_t N) { return (float*)((char*)this+6+25*N+12); } + __forceinline const float* scale(size_t N) const { return (float*)((char*)this+6+25*N+12); } + + __forceinline char* end(size_t N) { return (char*)this+6+25*N+16; } + __forceinline const char* end(size_t N) const { return (char*)this+6+25*N+16; } + }; + + template<int M> + typename CurveNi<M>::Type CurveNi<M>::type; + + typedef CurveNi<4> Curve4i; + typedef CurveNi<8> Curve8i; +} |