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Diffstat (limited to 'thirdparty/embree/kernels/common/accelset.h')
| -rw-r--r-- | thirdparty/embree/kernels/common/accelset.h | 248 |
1 files changed, 248 insertions, 0 deletions
diff --git a/thirdparty/embree/kernels/common/accelset.h b/thirdparty/embree/kernels/common/accelset.h new file mode 100644 index 0000000000..90b184a07b --- /dev/null +++ b/thirdparty/embree/kernels/common/accelset.h @@ -0,0 +1,248 @@ +// Copyright 2009-2021 Intel Corporation +// SPDX-License-Identifier: Apache-2.0 + +#pragma once + +#include "default.h" +#include "builder.h" +#include "geometry.h" +#include "ray.h" +#include "hit.h" + +namespace embree +{ + struct IntersectFunctionNArguments; + struct OccludedFunctionNArguments; + + typedef void (*ReportIntersectionFunc) (IntersectFunctionNArguments* args, const RTCFilterFunctionNArguments* filter_args); + typedef void (*ReportOcclusionFunc) (OccludedFunctionNArguments* args, const RTCFilterFunctionNArguments* filter_args); + + struct IntersectFunctionNArguments : public RTCIntersectFunctionNArguments + { + IntersectContext* internal_context; + Geometry* geometry; + ReportIntersectionFunc report; + }; + + struct OccludedFunctionNArguments : public RTCOccludedFunctionNArguments + { + IntersectContext* internal_context; + Geometry* geometry; + ReportOcclusionFunc report; + }; + + /*! Base class for set of acceleration structures. */ + class AccelSet : public Geometry + { + public: + typedef RTCIntersectFunctionN IntersectFuncN; + typedef RTCOccludedFunctionN OccludedFuncN; + typedef void (*ErrorFunc) (); + + struct IntersectorN + { + IntersectorN (ErrorFunc error = nullptr) ; + IntersectorN (IntersectFuncN intersect, OccludedFuncN occluded, const char* name); + + operator bool() const { return name; } + + public: + static const char* type; + IntersectFuncN intersect; + OccludedFuncN occluded; + const char* name; + }; + + public: + + /*! construction */ + AccelSet (Device* device, Geometry::GType gtype, size_t items, size_t numTimeSteps); + + /*! makes the acceleration structure immutable */ + virtual void immutable () {} + + /*! build accel */ + virtual void build () = 0; + + /*! check if the i'th primitive is valid between the specified time range */ + __forceinline bool valid(size_t i, const range<size_t>& itime_range) const + { + for (size_t itime = itime_range.begin(); itime <= itime_range.end(); itime++) + if (!isvalid_non_empty(bounds(i,itime))) return false; + + return true; + } + + /*! Calculates the bounds of an item */ + __forceinline BBox3fa bounds(size_t i, size_t itime = 0) const + { + BBox3fa box; + assert(i < size()); + RTCBoundsFunctionArguments args; + args.geometryUserPtr = userPtr; + args.primID = (unsigned int)i; + args.timeStep = (unsigned int)itime; + args.bounds_o = (RTCBounds*)&box; + boundsFunc(&args); + return box; + } + + /*! calculates the linear bounds of the i'th item at the itime'th time segment */ + __forceinline LBBox3fa linearBounds(size_t i, size_t itime) const + { + BBox3fa box[2]; + assert(i < size()); + RTCBoundsFunctionArguments args; + args.geometryUserPtr = userPtr; + args.primID = (unsigned int)i; + args.timeStep = (unsigned int)(itime+0); + args.bounds_o = (RTCBounds*)&box[0]; + boundsFunc(&args); + args.timeStep = (unsigned int)(itime+1); + args.bounds_o = (RTCBounds*)&box[1]; + boundsFunc(&args); + return LBBox3fa(box[0],box[1]); + } + + /*! calculates the build bounds of the i'th item, if it's valid */ + __forceinline bool buildBounds(size_t i, BBox3fa* bbox = nullptr) const + { + const BBox3fa b = bounds(i); + if (bbox) *bbox = b; + return isvalid_non_empty(b); + } + + /*! calculates the build bounds of the i'th item at the itime'th time segment, if it's valid */ + __forceinline bool buildBounds(size_t i, size_t itime, BBox3fa& bbox) const + { + const LBBox3fa bounds = linearBounds(i,itime); + bbox = bounds.bounds0; // use bounding box of first timestep to build BVH + return isvalid_non_empty(bounds); + } + + /*! calculates the linear bounds of the i'th primitive for the specified time range */ + __forceinline LBBox3fa linearBounds(size_t primID, const BBox1f& dt) const { + return LBBox3fa([&] (size_t itime) { return bounds(primID, itime); }, dt, time_range, fnumTimeSegments); + } + + /*! calculates the linear bounds of the i'th primitive for the specified time range */ + __forceinline bool linearBounds(size_t i, const BBox1f& time_range, LBBox3fa& bbox) const { + if (!valid(i, timeSegmentRange(time_range))) return false; + bbox = linearBounds(i, time_range); + return true; + } + + /* gets version info of topology */ + unsigned int getTopologyVersion() const { + return numPrimitives; + } + + /* returns true if topology changed */ + bool topologyChanged(unsigned int otherVersion) const { + return numPrimitives != otherVersion; + } + + public: + + /*! Intersects a single ray with the scene. */ + __forceinline void intersect (RayHit& ray, unsigned int geomID, unsigned int primID, IntersectContext* context, ReportIntersectionFunc report) + { + assert(primID < size()); + assert(intersectorN.intersect); + + int mask = -1; + IntersectFunctionNArguments args; + args.valid = &mask; + args.geometryUserPtr = userPtr; + args.context = context->user; + args.rayhit = (RTCRayHitN*)&ray; + args.N = 1; + args.geomID = geomID; + args.primID = primID; + args.internal_context = context; + args.geometry = this; + args.report = report; + + intersectorN.intersect(&args); + } + + /*! Tests if single ray is occluded by the scene. */ + __forceinline void occluded (Ray& ray, unsigned int geomID, unsigned int primID, IntersectContext* context, ReportOcclusionFunc report) + { + assert(primID < size()); + assert(intersectorN.occluded); + + int mask = -1; + OccludedFunctionNArguments args; + args.valid = &mask; + args.geometryUserPtr = userPtr; + args.context = context->user; + args.ray = (RTCRayN*)&ray; + args.N = 1; + args.geomID = geomID; + args.primID = primID; + args.internal_context = context; + args.geometry = this; + args.report = report; + + intersectorN.occluded(&args); + } + + /*! Intersects a packet of K rays with the scene. */ + template<int K> + __forceinline void intersect (const vbool<K>& valid, RayHitK<K>& ray, unsigned int geomID, unsigned int primID, IntersectContext* context, ReportIntersectionFunc report) + { + assert(primID < size()); + assert(intersectorN.intersect); + + vint<K> mask = valid.mask32(); + IntersectFunctionNArguments args; + args.valid = (int*)&mask; + args.geometryUserPtr = userPtr; + args.context = context->user; + args.rayhit = (RTCRayHitN*)&ray; + args.N = K; + args.geomID = geomID; + args.primID = primID; + args.internal_context = context; + args.geometry = this; + args.report = report; + + intersectorN.intersect(&args); + } + + /*! Tests if a packet of K rays is occluded by the scene. */ + template<int K> + __forceinline void occluded (const vbool<K>& valid, RayK<K>& ray, unsigned int geomID, unsigned int primID, IntersectContext* context, ReportOcclusionFunc report) + { + assert(primID < size()); + assert(intersectorN.occluded); + + vint<K> mask = valid.mask32(); + OccludedFunctionNArguments args; + args.valid = (int*)&mask; + args.geometryUserPtr = userPtr; + args.context = context->user; + args.ray = (RTCRayN*)&ray; + args.N = K; + args.geomID = geomID; + args.primID = primID; + args.internal_context = context; + args.geometry = this; + args.report = report; + + intersectorN.occluded(&args); + } + + public: + RTCBoundsFunction boundsFunc; + IntersectorN intersectorN; + }; + +#define DEFINE_SET_INTERSECTORN(symbol,intersector) \ + AccelSet::IntersectorN symbol() { \ + return AccelSet::IntersectorN(intersector::intersect, \ + intersector::occluded, \ + TOSTRING(isa) "::" TOSTRING(symbol)); \ + } +} |