initial commit, 4.5 stable

thirdparty/embree/kernels/common/geometry.cpp

@@ -0,0 +1,265 @@
+// Copyright 2009-2021 Intel Corporation
+// SPDX-License-Identifier: Apache-2.0
+
+#include "geometry.h"
+#include "scene.h"
+
+namespace embree
+{
+  const char* Geometry::gtype_names[Geometry::GTY_END] =
+  {
+    "flat_linear_curve",
+    "round_linear_curve",
+    "oriented_linear_curve",
+    "",
+    "flat_bezier_curve",
+    "round_bezier_curve",
+    "oriented_bezier_curve",
+    "",
+    "flat_bspline_curve",
+    "round_bspline_curve",
+    "oriented_bspline_curve",
+    "",
+    "flat_hermite_curve",
+    "round_hermite_curve",
+    "oriented_hermite_curve",
+    "",
+    "flat_catmull_rom_curve",
+    "round_catmull_rom_curve",
+    "oriented_catmull_rom_curve",
+    "",    
+    "triangles",
+    "quads",
+    "grid",
+    "subdivs",
+    "",
+    "sphere",
+    "disc",
+    "oriented_disc",
+    "",
+    "usergeom",
+    "instance_cheap",
+    "instance_expensive",
+  };
+     
+  Geometry::Geometry (Device* device, GType gtype, unsigned int numPrimitives, unsigned int numTimeSteps) 
+    : device(device), userPtr(nullptr),
+      numPrimitives(numPrimitives), numTimeSteps(unsigned(numTimeSteps)), fnumTimeSegments(float(numTimeSteps-1)), time_range(0.0f,1.0f),
+      mask(1),
+      gtype(gtype),
+      gsubtype(GTY_SUBTYPE_DEFAULT),
+      quality(RTC_BUILD_QUALITY_MEDIUM),
+      state((unsigned)State::MODIFIED),
+      enabled(true),
+      argumentFilterEnabled(false),
+      intersectionFilterN(nullptr), occlusionFilterN(nullptr), pointQueryFunc(nullptr)
+  {
+    device->refInc();
+  }
+
+  Geometry::~Geometry()
+  {
+    device->refDec();
+  }
+
+  void Geometry::setNumPrimitives(unsigned int numPrimitives_in)
+  {      
+    if (numPrimitives_in == numPrimitives) return;
+    
+    numPrimitives = numPrimitives_in;
+    
+    Geometry::update();
+  }
+
+  void Geometry::setNumTimeSteps (unsigned int numTimeSteps_in)
+  {
+    if (numTimeSteps_in == numTimeSteps) {
+      return;
+    }
+    
+    numTimeSteps = numTimeSteps_in;
+    fnumTimeSegments = float(numTimeSteps_in-1);
+    
+    Geometry::update();
+  }
+
+  void Geometry::setTimeRange (const BBox1f range)
+  {
+    time_range = range;
+    Geometry::update();
+  }
+  
+  BBox1f Geometry::getTimeRange () const
+  {
+    return time_range;
+  }
+
+  void Geometry::update()
+  {
+    ++modCounter_; // FIXME: required?
+    state = (unsigned)State::MODIFIED;
+  }
+  
+  void Geometry::commit() 
+  {
+    ++modCounter_;
+    state = (unsigned)State::COMMITTED;
+  }
+
+  void Geometry::preCommit()
+  {
+    if (State::MODIFIED == (State)state)
+      throw_RTCError(RTC_ERROR_INVALID_OPERATION,"geometry not committed");
+  }
+
+  void Geometry::postCommit()
+  {
+  }
+
+  void Geometry::enable ()
+  {
+    if (isEnabled()) 
+      return;
+
+    enabled = true;
+    ++modCounter_;
+  }
+
+  void Geometry::disable () 
+  {
+    if (isDisabled()) 
+      return;
+    
+    enabled = false;
+    ++modCounter_;
+  }
+
+  void Geometry::setUserData (void* ptr)
+  {
+    userPtr = ptr;
+  }
+  
+  void Geometry::setIntersectionFilterFunctionN (RTCFilterFunctionN filter) 
+  {
+    if (!(getTypeMask() & (MTY_TRIANGLE_MESH | MTY_QUAD_MESH | MTY_CURVES | MTY_SUBDIV_MESH | MTY_USER_GEOMETRY | MTY_GRID_MESH)))
+      throw_RTCError(RTC_ERROR_INVALID_OPERATION,"filter functions not supported for this geometry"); 
+
+    intersectionFilterN = filter;
+  }
+
+  void Geometry::setOcclusionFilterFunctionN (RTCFilterFunctionN filter) 
+  {
+    if (!(getTypeMask() & (MTY_TRIANGLE_MESH | MTY_QUAD_MESH | MTY_CURVES | MTY_SUBDIV_MESH | MTY_USER_GEOMETRY | MTY_GRID_MESH)))
+      throw_RTCError(RTC_ERROR_INVALID_OPERATION,"filter functions not supported for this geometry"); 
+
+    occlusionFilterN = filter;
+  }
+  
+  void Geometry::setPointQueryFunction (RTCPointQueryFunction func) 
+  {
+    pointQueryFunc = func;
+  }
+
+  void Geometry::interpolateN(const RTCInterpolateNArguments* const args)
+  {
+    const void* valid_i = args->valid;
+    const unsigned* primIDs = args->primIDs;
+    const float* u = args->u;
+    const float* v = args->v;
+    unsigned int N = args->N;
+    RTCBufferType bufferType = args->bufferType;
+    unsigned int bufferSlot = args->bufferSlot;
+    float* P = args->P;
+    float* dPdu = args->dPdu;
+    float* dPdv = args->dPdv;
+    float* ddPdudu = args->ddPdudu;
+    float* ddPdvdv = args->ddPdvdv;
+    float* ddPdudv = args->ddPdudv;
+    unsigned int valueCount = args->valueCount;
+
+    if (valueCount > 256) throw_RTCError(RTC_ERROR_INVALID_OPERATION,"maximally 256 floating point values can be interpolated per vertex");
+    const int* valid = (const int*) valid_i;
+ 
+    __aligned(64) float P_tmp[256];
+    __aligned(64) float dPdu_tmp[256];
+    __aligned(64) float dPdv_tmp[256];
+    __aligned(64) float ddPdudu_tmp[256];
+    __aligned(64) float ddPdvdv_tmp[256];
+    __aligned(64) float ddPdudv_tmp[256];
+
+    float* Pt = P ? P_tmp : nullptr;
+    float* dPdut = nullptr, *dPdvt = nullptr;
+    if (dPdu) { dPdut = dPdu_tmp; dPdvt = dPdv_tmp; }
+    float* ddPdudut = nullptr, *ddPdvdvt = nullptr, *ddPdudvt = nullptr;
+    if (ddPdudu) { ddPdudut = ddPdudu_tmp; ddPdvdvt = ddPdvdv_tmp; ddPdudvt = ddPdudv_tmp; }
+    
+    for (unsigned int i=0; i<N; i++)
+    {
+      if (valid && !valid[i]) continue;
+
+      RTCInterpolateArguments iargs;
+      iargs.primID = primIDs[i];
+      iargs.u = u[i];
+      iargs.v = v[i];
+      iargs.bufferType = bufferType;
+      iargs.bufferSlot = bufferSlot;
+      iargs.P = Pt;
+      iargs.dPdu = dPdut;
+      iargs.dPdv = dPdvt;
+      iargs.ddPdudu = ddPdudut;
+      iargs.ddPdvdv = ddPdvdvt;
+      iargs.ddPdudv = ddPdudvt;
+      iargs.valueCount = valueCount;
+      interpolate(&iargs);
+      
+      if (likely(P)) {
+        for (unsigned int j=0; j<valueCount; j++) 
+          P[j*N+i] = Pt[j];
+      }
+      if (likely(dPdu)) 
+      {
+        for (unsigned int j=0; j<valueCount; j++) {
+          dPdu[j*N+i] = dPdut[j];
+          dPdv[j*N+i] = dPdvt[j];
+        }
+      }
+      if (likely(ddPdudu)) 
+      {
+        for (unsigned int j=0; j<valueCount; j++) {
+          ddPdudu[j*N+i] = ddPdudut[j];
+          ddPdvdv[j*N+i] = ddPdvdvt[j];
+          ddPdudv[j*N+i] = ddPdudvt[j];
+        }
+      }
+    }
+  }
+
+  bool Geometry::pointQuery(PointQuery* query, PointQueryContext* context)
+  {
+    assert(context->primID < size());
+
+    RTCPointQueryFunctionArguments args;
+    args.query           = (RTCPointQuery*)context->query_ws;
+    args.userPtr         = context->userPtr;
+    args.primID          = context->primID;
+    args.geomID          = context->geomID;
+    args.context         = context->userContext;
+    args.similarityScale = context->similarityScale;
+
+    bool update = false;
+    if(context->func)  update |= context->func(&args);
+    if(pointQueryFunc) update |= pointQueryFunc(&args);
+
+    if (update && context->userContext->instStackSize > 0)
+    {
+      // update point query
+      if (context->query_type == POINT_QUERY_TYPE_AABB) {
+        context->updateAABB();
+      } else {
+        assert(context->similarityScale > 0.f);
+        query->radius = context->query_ws->radius * context->similarityScale;
+      }
+    }
+    return update;
+  }
+}