279 lines
14 KiB
C++
279 lines
14 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 "primitive.h"
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#include "curve_intersector_precalculations.h"
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namespace embree
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{
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template<int M>
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struct CurveNiMB
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{
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struct Type : public PrimitiveType {
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const char* name() const;
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size_t sizeActive(const char* This) const;
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size_t sizeTotal(const char* This) const;
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size_t getBytes(const char* This) const;
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};
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static Type type;
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public:
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/* Returns maximum number of stored primitives */
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static __forceinline size_t max_size() { return M; }
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/* Returns required number of primitive blocks for N primitives */
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static __forceinline size_t blocks(size_t N) { return (N+M-1)/M; }
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static __forceinline size_t bytes(size_t N)
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{
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const size_t f = N/M, r = N%M;
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static_assert(sizeof(CurveNiMB) == 6+37*M+24, "internal data layout issue");
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return f*sizeof(CurveNiMB) + (r!=0)*(6+37*r+24);
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}
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public:
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/*! Default constructor. */
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__forceinline CurveNiMB () {}
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/*! fill curve from curve list */
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__forceinline LBBox3fa fillMB(const PrimRefMB* prims, size_t& begin, size_t _end, Scene* scene, const BBox1f time_range)
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{
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size_t end = min(begin+M,_end);
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N = (uint8_t)(end-begin);
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const unsigned int geomID0 = prims[begin].geomID();
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this->geomID(N) = geomID0;
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ty = (uint8_t) scene->get(geomID0)->getType();
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/* encode all primitives */
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LBBox3fa lbounds = empty;
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for (size_t i=0; i<N; i++)
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{
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const PrimRefMB& prim = prims[begin+i];
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const unsigned int geomID = prim.geomID(); assert(geomID == geomID0);
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const unsigned int primID = prim.primID();
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lbounds.extend(scene->get(geomID)->vlinearBounds(primID,time_range));
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}
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BBox3fa bounds = lbounds.bounds();
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/* calculate offset and scale */
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Vec3fa loffset = bounds.lower;
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float lscale = reduce_min(256.0f/(bounds.size()*sqrt(3.0f)));
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if (bounds.size() == Vec3fa(zero)) lscale = 0.0f;
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*this->offset(N) = loffset;
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*this->scale(N) = lscale;
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this->time_offset(N) = time_range.lower;
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this->time_scale(N) = 1.0f/time_range.size();
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/* encode all primitives */
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for (size_t i=0; i<M && begin<end; i++, begin++)
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{
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const PrimRefMB& prim = prims[begin];
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const unsigned int geomID = prim.geomID();
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const unsigned int primID = prim.primID();
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const LinearSpace3fa space2 = scene->get(geomID)->computeAlignedSpaceMB(primID,time_range);
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const LinearSpace3fa space3(trunc(126.0f*space2.vx),trunc(126.0f*space2.vy),trunc(126.0f*space2.vz));
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const LBBox3fa bounds = scene->get(geomID)->vlinearBounds(loffset,lscale,max(length(space3.vx),length(space3.vy),length(space3.vz)),space3.transposed(),primID,time_range);
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// NOTE: this weird (int8_t) (short) cast works around VS2015 Win32 compiler bug
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bounds_vx_x(N)[i] = (int8_t) (short) space3.vx.x;
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bounds_vx_y(N)[i] = (int8_t) (short) space3.vx.y;
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bounds_vx_z(N)[i] = (int8_t) (short) space3.vx.z;
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bounds_vx_lower0(N)[i] = (short) clamp(floor(bounds.bounds0.lower.x),-32767.0f,32767.0f);
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bounds_vx_upper0(N)[i] = (short) clamp(ceil (bounds.bounds0.upper.x),-32767.0f,32767.0f);
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bounds_vx_lower1(N)[i] = (short) clamp(floor(bounds.bounds1.lower.x),-32767.0f,32767.0f);
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bounds_vx_upper1(N)[i] = (short) clamp(ceil (bounds.bounds1.upper.x),-32767.0f,32767.0f);
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assert(-32767.0f <= floor(bounds.bounds0.lower.x) && floor(bounds.bounds0.lower.x) <= 32767.0f);
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assert(-32767.0f <= ceil (bounds.bounds0.upper.x) && ceil (bounds.bounds0.upper.x) <= 32767.0f);
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assert(-32767.0f <= floor(bounds.bounds1.lower.x) && floor(bounds.bounds1.lower.x) <= 32767.0f);
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assert(-32767.0f <= ceil (bounds.bounds1.upper.x) && ceil (bounds.bounds1.upper.x) <= 32767.0f);
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bounds_vy_x(N)[i] = (int8_t) (short) space3.vy.x;
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bounds_vy_y(N)[i] = (int8_t) (short) space3.vy.y;
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bounds_vy_z(N)[i] = (int8_t) (short) space3.vy.z;
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bounds_vy_lower0(N)[i] = (short) clamp(floor(bounds.bounds0.lower.y),-32767.0f,32767.0f);
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bounds_vy_upper0(N)[i] = (short) clamp(ceil (bounds.bounds0.upper.y),-32767.0f,32767.0f);
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bounds_vy_lower1(N)[i] = (short) clamp(floor(bounds.bounds1.lower.y),-32767.0f,32767.0f);
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bounds_vy_upper1(N)[i] = (short) clamp(ceil (bounds.bounds1.upper.y),-32767.0f,32767.0f);
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assert(-32767.0f <= floor(bounds.bounds0.lower.y) && floor(bounds.bounds0.lower.y) <= 32767.0f);
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assert(-32767.0f <= ceil (bounds.bounds0.upper.y) && ceil (bounds.bounds0.upper.y) <= 32767.0f);
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assert(-32767.0f <= floor(bounds.bounds1.lower.y) && floor(bounds.bounds1.lower.y) <= 32767.0f);
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assert(-32767.0f <= ceil (bounds.bounds1.upper.y) && ceil (bounds.bounds1.upper.y) <= 32767.0f);
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bounds_vz_x(N)[i] = (int8_t) (short) space3.vz.x;
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bounds_vz_y(N)[i] = (int8_t) (short) space3.vz.y;
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bounds_vz_z(N)[i] = (int8_t) (short) space3.vz.z;
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bounds_vz_lower0(N)[i] = (short) clamp(floor(bounds.bounds0.lower.z),-32767.0f,32767.0f);
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bounds_vz_upper0(N)[i] = (short) clamp(ceil (bounds.bounds0.upper.z),-32767.0f,32767.0f);
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bounds_vz_lower1(N)[i] = (short) clamp(floor(bounds.bounds1.lower.z),-32767.0f,32767.0f);
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bounds_vz_upper1(N)[i] = (short) clamp(ceil (bounds.bounds1.upper.z),-32767.0f,32767.0f);
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assert(-32767.0f <= floor(bounds.bounds0.lower.z) && floor(bounds.bounds0.lower.z) <= 32767.0f);
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assert(-32767.0f <= ceil (bounds.bounds0.upper.z) && ceil (bounds.bounds0.upper.z) <= 32767.0f);
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assert(-32767.0f <= floor(bounds.bounds1.lower.z) && floor(bounds.bounds1.lower.z) <= 32767.0f);
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assert(-32767.0f <= ceil (bounds.bounds1.upper.z) && ceil (bounds.bounds1.upper.z) <= 32767.0f);
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this->primID(N)[i] = primID;
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}
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return lbounds;
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}
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template<typename BVH, typename SetMB, typename Allocator>
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__forceinline static typename BVH::NodeRecordMB4D createLeafMB(BVH* bvh, const SetMB& prims, const Allocator& alloc)
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{
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size_t start = prims.begin();
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size_t end = prims.end();
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size_t items = CurveNiMB::blocks(prims.size());
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size_t numbytes = CurveNiMB::bytes(prims.size());
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CurveNiMB* accel = (CurveNiMB*) alloc.malloc1(numbytes,BVH::byteAlignment);
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const typename BVH::NodeRef node = bvh->encodeLeaf((int8_t*)accel,items);
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LBBox3fa bounds = empty;
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for (size_t i=0; i<items; i++)
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bounds.extend(accel[i].fillMB(prims.prims->data(),start,end,bvh->scene,prims.time_range));
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return typename BVH::NodeRecordMB4D(node,bounds,prims.time_range);
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};
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public:
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// 27.6 - 46 bytes per primitive
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uint8_t ty;
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uint8_t N;
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uint8_t data[4+37*M+24];
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/*
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struct Layout
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{
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unsigned int geomID;
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unsigned int primID[N];
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int8_t bounds_vx_x[N];
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int8_t bounds_vx_y[N];
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int8_t bounds_vx_z[N];
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short bounds_vx_lower0[N];
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short bounds_vx_upper0[N];
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short bounds_vx_lower1[N];
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short bounds_vx_upper1[N];
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int8_t bounds_vy_x[N];
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int8_t bounds_vy_y[N];
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int8_t bounds_vy_z[N];
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short bounds_vy_lower0[N];
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short bounds_vy_upper0[N];
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short bounds_vy_lower1[N];
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short bounds_vy_upper1[N];
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int8_t bounds_vz_x[N];
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int8_t bounds_vz_y[N];
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int8_t bounds_vz_z[N];
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short bounds_vz_lower0[N];
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short bounds_vz_upper0[N];
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short bounds_vz_lower1[N];
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short bounds_vz_upper1[N];
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Vec3f offset;
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float scale;
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float time_offset;
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float time_scale;
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};
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*/
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__forceinline unsigned int& geomID(size_t N) { return *(unsigned int*)((int8_t*)this+2); }
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__forceinline const unsigned int& geomID(size_t N) const { return *(unsigned int*)((int8_t*)this+2); }
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__forceinline unsigned int* primID(size_t N) { return (unsigned int*)((int8_t*)this+6); }
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__forceinline const unsigned int* primID(size_t N) const { return (unsigned int*)((int8_t*)this+6); }
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__forceinline int8_t* bounds_vx_x(size_t N) { return (int8_t*)((int8_t*)this+6+4*N); }
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__forceinline const int8_t* bounds_vx_x(size_t N) const { return (int8_t*)((int8_t*)this+6+4*N); }
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__forceinline int8_t* bounds_vx_y(size_t N) { return (int8_t*)((int8_t*)this+6+5*N); }
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__forceinline const int8_t* bounds_vx_y(size_t N) const { return (int8_t*)((int8_t*)this+6+5*N); }
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__forceinline int8_t* bounds_vx_z(size_t N) { return (int8_t*)((int8_t*)this+6+6*N); }
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__forceinline const int8_t* bounds_vx_z(size_t N) const { return (int8_t*)((int8_t*)this+6+6*N); }
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__forceinline short* bounds_vx_lower0(size_t N) { return (short*)((int8_t*)this+6+7*N); }
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__forceinline const short* bounds_vx_lower0(size_t N) const { return (short*)((int8_t*)this+6+7*N); }
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__forceinline short* bounds_vx_upper0(size_t N) { return (short*)((int8_t*)this+6+9*N); }
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__forceinline const short* bounds_vx_upper0(size_t N) const { return (short*)((int8_t*)this+6+9*N); }
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__forceinline short* bounds_vx_lower1(size_t N) { return (short*)((int8_t*)this+6+11*N); }
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__forceinline const short* bounds_vx_lower1(size_t N) const { return (short*)((int8_t*)this+6+11*N); }
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__forceinline short* bounds_vx_upper1(size_t N) { return (short*)((int8_t*)this+6+13*N); }
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__forceinline const short* bounds_vx_upper1(size_t N) const { return (short*)((int8_t*)this+6+13*N); }
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__forceinline int8_t* bounds_vy_x(size_t N) { return (int8_t*)((int8_t*)this+6+15*N); }
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__forceinline const int8_t* bounds_vy_x(size_t N) const { return (int8_t*)((int8_t*)this+6+15*N); }
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__forceinline int8_t* bounds_vy_y(size_t N) { return (int8_t*)((int8_t*)this+6+16*N); }
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__forceinline const int8_t* bounds_vy_y(size_t N) const { return (int8_t*)((int8_t*)this+6+16*N); }
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__forceinline int8_t* bounds_vy_z(size_t N) { return (int8_t*)((int8_t*)this+6+17*N); }
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__forceinline const int8_t* bounds_vy_z(size_t N) const { return (int8_t*)((int8_t*)this+6+17*N); }
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__forceinline short* bounds_vy_lower0(size_t N) { return (short*)((int8_t*)this+6+18*N); }
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__forceinline const short* bounds_vy_lower0(size_t N) const { return (short*)((int8_t*)this+6+18*N); }
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__forceinline short* bounds_vy_upper0(size_t N) { return (short*)((int8_t*)this+6+20*N); }
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__forceinline const short* bounds_vy_upper0(size_t N) const { return (short*)((int8_t*)this+6+20*N); }
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__forceinline short* bounds_vy_lower1(size_t N) { return (short*)((int8_t*)this+6+22*N); }
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__forceinline const short* bounds_vy_lower1(size_t N) const { return (short*)((int8_t*)this+6+22*N); }
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__forceinline short* bounds_vy_upper1(size_t N) { return (short*)((int8_t*)this+6+24*N); }
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__forceinline const short* bounds_vy_upper1(size_t N) const { return (short*)((int8_t*)this+6+24*N); }
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__forceinline int8_t* bounds_vz_x(size_t N) { return (int8_t*)((int8_t*)this+6+26*N); }
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__forceinline const int8_t* bounds_vz_x(size_t N) const { return (int8_t*)((int8_t*)this+6+26*N); }
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__forceinline int8_t* bounds_vz_y(size_t N) { return (int8_t*)((int8_t*)this+6+27*N); }
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__forceinline const int8_t* bounds_vz_y(size_t N) const { return (int8_t*)((int8_t*)this+6+27*N); }
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__forceinline int8_t* bounds_vz_z(size_t N) { return (int8_t*)((int8_t*)this+6+28*N); }
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__forceinline const int8_t* bounds_vz_z(size_t N) const { return (int8_t*)((int8_t*)this+6+28*N); }
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__forceinline short* bounds_vz_lower0(size_t N) { return (short*)((int8_t*)this+6+29*N); }
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__forceinline const short* bounds_vz_lower0(size_t N) const { return (short*)((int8_t*)this+6+29*N); }
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__forceinline short* bounds_vz_upper0(size_t N) { return (short*)((int8_t*)this+6+31*N); }
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__forceinline const short* bounds_vz_upper0(size_t N) const { return (short*)((int8_t*)this+6+31*N); }
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__forceinline short* bounds_vz_lower1(size_t N) { return (short*)((int8_t*)this+6+33*N); }
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__forceinline const short* bounds_vz_lower1(size_t N) const { return (short*)((int8_t*)this+6+33*N); }
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__forceinline short* bounds_vz_upper1(size_t N) { return (short*)((int8_t*)this+6+35*N); }
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__forceinline const short* bounds_vz_upper1(size_t N) const { return (short*)((int8_t*)this+6+35*N); }
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__forceinline Vec3f* offset(size_t N) { return (Vec3f*)((int8_t*)this+6+37*N); }
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__forceinline const Vec3f* offset(size_t N) const { return (Vec3f*)((int8_t*)this+6+37*N); }
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__forceinline float* scale(size_t N) { return (float*)((int8_t*)this+6+37*N+12); }
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__forceinline const float* scale(size_t N) const { return (float*)((int8_t*)this+6+37*N+12); }
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__forceinline float& time_offset(size_t N) { return *(float*)((int8_t*)this+6+37*N+16); }
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__forceinline const float& time_offset(size_t N) const { return *(float*)((int8_t*)this+6+37*N+16); }
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__forceinline float& time_scale(size_t N) { return *(float*)((int8_t*)this+6+37*N+20); }
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__forceinline const float& time_scale(size_t N) const { return *(float*)((int8_t*)this+6+37*N+20); }
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__forceinline int8_t* end(size_t N) { return (int8_t*)this+6+37*N+24; }
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__forceinline const int8_t* end(size_t N) const { return (int8_t*)this+6+37*N+24; }
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};
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template<int M>
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typename CurveNiMB<M>::Type CurveNiMB<M>::type;
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typedef CurveNiMB<4> Curve4iMB;
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typedef CurveNiMB<8> Curve8iMB;
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}
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