Add Embree-aarch64 thirdparty library

1 files changed, 442 insertions, 0 deletions

diff --git a/thirdparty/embree-aarch64/kernels/geometry/trianglei.h b/thirdparty/embree-aarch64/kernels/geometry/trianglei.h
new file mode 100644
index 0000000000..4f3118cc0c
--- /dev/null
+++ b/thirdparty/embree-aarch64/kernels/geometry/trianglei.h
@@ -0,0 +1,442 @@
+// Copyright 2009-2020 Intel Corporation
+// SPDX-License-Identifier: Apache-2.0
+
+#pragma once
+
+#include "primitive.h"
+#include "../common/scene.h"
+
+namespace embree
+{
+  /* Stores M triangles from an indexed face set */
+  template <int M>
+  struct TriangleMi
+  {
+    /* Virtual interface to query information about the triangle type */
+    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:
+
+    /* primitive supports multiple time segments */
+    static const bool singleTimeSegment = false;
+
+    /* Returns maximum number of stored triangles */
+    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+max_size()-1)/max_size(); }
+
+  public:
+
+    /* Default constructor */
+    __forceinline TriangleMi() {  }
+
+    /* Construction from vertices and IDs */
+    __forceinline TriangleMi(const vuint<M>& v0,
+                             const vuint<M>& v1,
+                             const vuint<M>& v2,
+                             const vuint<M>& geomIDs,
+                             const vuint<M>& primIDs)
+#if defined(EMBREE_COMPACT_POLYS)
+      : geomIDs(geomIDs), primIDs(primIDs) {}
+#else
+    : v0_(v0), v1_(v1), v2_(v2), geomIDs(geomIDs), primIDs(primIDs) {}
+#endif
+
+    /* Returns a mask that tells which triangles are valid */
+    __forceinline vbool<M> valid() const { return primIDs != vuint<M>(-1); }
+
+    /* Returns if the specified triangle is valid */
+    __forceinline bool valid(const size_t i) const { assert(i<M); return primIDs[i] != -1; }
+
+    /* Returns the number of stored triangles */
+    __forceinline size_t size() const { return bsf(~movemask(valid())); }
+
+    /* Returns the geometry IDs */
+    __forceinline vuint<M> geomID() const { return geomIDs; }
+    __forceinline unsigned int geomID(const size_t i) const { assert(i<M); return geomIDs[i]; }
+
+    /* Returns the primitive IDs */
+    __forceinline vuint<M> primID() const { return primIDs; }
+    __forceinline unsigned int primID(const size_t i) const { assert(i<M); return primIDs[i]; }
+
+    /* Calculate the bounds of the triangles */
+    __forceinline const BBox3fa bounds(const Scene *const scene, const size_t itime=0) const
+    {
+      BBox3fa bounds = empty;
+      for (size_t i=0; i<M && valid(i); i++) {
+        const TriangleMesh* mesh = scene->get<TriangleMesh>(geomID(i));
+        bounds.extend(mesh->bounds(primID(i),itime));
+      }
+      return bounds;
+    }
+
+    /* Calculate the linear bounds of the primitive */
+    __forceinline LBBox3fa linearBounds(const Scene *const scene, size_t itime) {
+      return LBBox3fa(bounds(scene,itime+0),bounds(scene,itime+1));
+    }
+
+    __forceinline LBBox3fa linearBounds(const Scene *const scene, size_t itime, size_t numTimeSteps)
+    {
+      LBBox3fa allBounds = empty;
+      for (size_t i=0; i<M && valid(i); i++)
+      {
+        const TriangleMesh* mesh = scene->get<TriangleMesh>(geomID(i));
+        allBounds.extend(mesh->linearBounds(primID(i), itime, numTimeSteps));
+      }
+      return allBounds;
+    }
+
+    __forceinline LBBox3fa linearBounds(const Scene *const scene, const BBox1f time_range)
+    {
+      LBBox3fa allBounds = empty;
+      for (size_t i=0; i<M && valid(i); i++)
+      {
+        const TriangleMesh* mesh = scene->get<TriangleMesh>(geomID(i));
+        allBounds.extend(mesh->linearBounds(primID(i), time_range));
+      }
+      return allBounds;
+    }
+    
+    /* Non-temporal store */
+    __forceinline static void store_nt(TriangleMi* dst, const TriangleMi& src)
+    {
+#if !defined(EMBREE_COMPACT_POLYS)
+      vuint<M>::store_nt(&dst->v0_,src.v0_);
+      vuint<M>::store_nt(&dst->v1_,src.v1_);
+      vuint<M>::store_nt(&dst->v2_,src.v2_);
+#endif
+      vuint<M>::store_nt(&dst->geomIDs,src.geomIDs);
+      vuint<M>::store_nt(&dst->primIDs,src.primIDs);
+    }
+
+    /* Fill triangle from triangle list */
+    template<typename PrimRefT>
+    __forceinline void fill(const PrimRefT* prims, size_t& begin, size_t end, Scene* scene)
+    {
+      vuint<M> v0 = zero, v1 = zero, v2 = zero;
+      vuint<M> geomID = -1, primID = -1;
+      const PrimRefT* prim = &prims[begin];
+
+      for (size_t i=0; i<M; i++)
+      {
+        if (begin<end) {
+          geomID[i] = prim->geomID();
+          primID[i] = prim->primID();
+#if !defined(EMBREE_COMPACT_POLYS)
+          const TriangleMesh* mesh = scene->get<TriangleMesh>(prim->geomID());
+          const TriangleMesh::Triangle& tri = mesh->triangle(prim->primID());
+          unsigned int int_stride = mesh->vertices0.getStride()/4;
+          v0[i] = tri.v[0] * int_stride;
+          v1[i] = tri.v[1] * int_stride;
+          v2[i] = tri.v[2] * int_stride;
+#endif
+          begin++;
+        } else {
+          assert(i);
+          if (likely(i > 0)) {
+            geomID[i] = geomID[0];
+            primID[i] = -1;
+            v0[i] = v0[0];
+            v1[i] = v0[0];
+            v2[i] = v0[0];
+          }
+        }
+        if (begin<end) prim = &prims[begin];
+      }
+      new (this) TriangleMi(v0,v1,v2,geomID,primID); // FIXME: use non temporal store
+    }
+
+    __forceinline LBBox3fa fillMB(const PrimRef* prims, size_t& begin, size_t end, Scene* scene, size_t itime)
+    {
+      fill(prims, begin, end, scene);
+      return linearBounds(scene, itime);
+    }
+
+    __forceinline LBBox3fa fillMB(const PrimRefMB* prims, size_t& begin, size_t end, Scene* scene, const BBox1f time_range)
+    {
+      fill(prims, begin, end, scene);
+      return linearBounds(scene, time_range);
+    }
+
+    /* Updates the primitive */
+    __forceinline BBox3fa update(TriangleMesh* mesh)
+    {
+      BBox3fa bounds = empty;
+      for (size_t i=0; i<M; i++)
+      {
+        if (primID(i) == -1) break;
+        const unsigned int primId = primID(i);
+        const TriangleMesh::Triangle& tri = mesh->triangle(primId);
+        const Vec3fa p0 = mesh->vertex(tri.v[0]);
+        const Vec3fa p1 = mesh->vertex(tri.v[1]);
+        const Vec3fa p2 = mesh->vertex(tri.v[2]);
+        bounds.extend(merge(BBox3fa(p0),BBox3fa(p1),BBox3fa(p2)));
+      }
+      return bounds;
+    }
+
+  protected:
+#if !defined(EMBREE_COMPACT_POLYS)
+    vuint<M> v0_;         // 4 byte offset of 1st vertex
+    vuint<M> v1_;         // 4 byte offset of 2nd vertex
+    vuint<M> v2_;         // 4 byte offset of 3rd vertex
+#endif
+    vuint<M> geomIDs;    // geometry ID of mesh
+    vuint<M> primIDs;    // primitive ID of primitive inside mesh
+  };
+
+  namespace isa
+  {
+    
+  template<int M>
+    struct TriangleMi : public embree::TriangleMi<M>
+  {
+#if !defined(EMBREE_COMPACT_POLYS)
+    using embree::TriangleMi<M>::v0_;
+    using embree::TriangleMi<M>::v1_;
+    using embree::TriangleMi<M>::v2_;
+#endif
+    using embree::TriangleMi<M>::geomIDs;
+    using embree::TriangleMi<M>::primIDs;
+    using embree::TriangleMi<M>::geomID;
+    using embree::TriangleMi<M>::primID;
+    using embree::TriangleMi<M>::valid;
+        
+    /* loads a single vertex */
+    template<int vid>
+    __forceinline Vec3f getVertex(const size_t index, const Scene *const scene) const
+    {
+#if defined(EMBREE_COMPACT_POLYS)
+      const TriangleMesh* mesh = scene->get<TriangleMesh>(geomID(index));
+      const TriangleMesh::Triangle& tri = mesh->triangle(primID(index));
+      return (Vec3f) mesh->vertices[0][tri.v[vid]];
+#else
+      const vuint<M>& v = getVertexOffset<vid>();
+      const float* vertices = scene->vertices[geomID(index)];
+      return (Vec3f&) vertices[v[index]];
+#endif
+    }
+
+    template<int vid, typename T>
+    __forceinline Vec3<T> getVertex(const size_t index, const Scene *const scene, const size_t itime, const T& ftime) const
+    {
+#if defined(EMBREE_COMPACT_POLYS)
+      const TriangleMesh* mesh = scene->get<TriangleMesh>(geomID(index));
+      const TriangleMesh::Triangle& tri = mesh->triangle(primID(index));
+      const Vec3fa v0 = mesh->vertices[itime+0][tri.v[vid]];
+      const Vec3fa v1 = mesh->vertices[itime+1][tri.v[vid]];
+#else
+      const vuint<M>& v = getVertexOffset<vid>();
+      const TriangleMesh* mesh = scene->get<TriangleMesh>(geomID(index));
+      const float* vertices0 = (const float*) mesh->vertexPtr(0,itime+0);
+      const float* vertices1 = (const float*) mesh->vertexPtr(0,itime+1);
+      const Vec3fa v0 = Vec3fa::loadu(vertices0+v[index]);
+      const Vec3fa v1 = Vec3fa::loadu(vertices1+v[index]);
+#endif
+      const Vec3<T> p0(v0.x,v0.y,v0.z);
+      const Vec3<T> p1(v1.x,v1.y,v1.z);
+      return lerp(p0,p1,ftime);
+    }
+
+    template<int vid, int K, typename T>
+    __forceinline Vec3<T> getVertex(const vbool<K>& valid, const size_t index, const Scene *const scene, const vint<K>& itime, const T& ftime) const
+    {
+      Vec3<T> p0, p1;
+      const TriangleMesh* mesh = scene->get<TriangleMesh>(geomID(index));
+      
+      for (size_t mask=movemask(valid), i=bsf(mask); mask; mask=btc(mask,i), i=bsf(mask))
+      {
+#if defined(EMBREE_COMPACT_POLYS)
+        const TriangleMesh::Triangle& tri = mesh->triangle(primID(index));
+        const Vec3fa v0 = mesh->vertices[itime[i]+0][tri.v[vid]];
+        const Vec3fa v1 = mesh->vertices[itime[i]+1][tri.v[vid]];
+#else
+        const vuint<M>& v = getVertexOffset<vid>();
+        const float* vertices0 = (const float*) mesh->vertexPtr(0,itime[i]+0);
+        const float* vertices1 = (const float*) mesh->vertexPtr(0,itime[i]+1);
+        const Vec3fa v0 = Vec3fa::loadu(vertices0+v[index]);
+        const Vec3fa v1 = Vec3fa::loadu(vertices1+v[index]);
+#endif
+        p0.x[i] = v0.x; p0.y[i] = v0.y; p0.z[i] = v0.z;
+        p1.x[i] = v1.x; p1.y[i] = v1.y; p1.z[i] = v1.z;
+      }
+      return (T(one)-ftime)*p0 + ftime*p1;
+    }
+
+    struct Triangle {
+      vfloat4 v0,v1,v2;
+    };
+    
+#if defined(EMBREE_COMPACT_POLYS)
+    
+    __forceinline Triangle loadTriangle(const int i, const Scene* const scene) const 
+    {
+      const unsigned int geomID = geomIDs[i];
+      const unsigned int primID = primIDs[i];
+      if (unlikely(primID == -1)) return { zero, zero, zero };
+      const TriangleMesh* mesh = scene->get<TriangleMesh>(geomID);
+      const TriangleMesh::Triangle& tri = mesh->triangle(primID);
+      const vfloat4 v0 = (vfloat4) mesh->vertices0[tri.v[0]];
+      const vfloat4 v1 = (vfloat4) mesh->vertices0[tri.v[1]];
+      const vfloat4 v2 = (vfloat4) mesh->vertices0[tri.v[2]];
+      return { v0, v1, v2 };
+    }
+
+    __forceinline Triangle loadTriangle(const int i, const int itime, const TriangleMesh* const mesh) const 
+    {
+      const unsigned int primID = primIDs[i];
+      if (unlikely(primID == -1)) return { zero, zero, zero };
+      const TriangleMesh::Triangle& tri = mesh->triangle(primID);
+      const vfloat4 v0 = (vfloat4) mesh->vertices[itime][tri.v[0]];
+      const vfloat4 v1 = (vfloat4) mesh->vertices[itime][tri.v[1]];
+      const vfloat4 v2 = (vfloat4) mesh->vertices[itime][tri.v[2]];
+      return { v0, v1, v2 };
+    }
+    
+#else
+
+    __forceinline Triangle loadTriangle(const int i, const Scene* const scene) const 
+    {
+      const float* vertices = scene->vertices[geomID(i)];
+      const vfloat4 v0 = vfloat4::loadu(vertices + v0_[i]);
+      const vfloat4 v1 = vfloat4::loadu(vertices + v1_[i]);
+      const vfloat4 v2 = vfloat4::loadu(vertices + v2_[i]);
+      return { v0, v1, v2 };
+    }
+
+    __forceinline Triangle loadTriangle(const int i, const int itime, const TriangleMesh* const mesh) const 
+    {
+      const float* vertices = (const float*) mesh->vertexPtr(0,itime);
+      const vfloat4 v0 = vfloat4::loadu(vertices + v0_[i]);
+      const vfloat4 v1 = vfloat4::loadu(vertices + v1_[i]);
+      const vfloat4 v2 = vfloat4::loadu(vertices + v2_[i]);
+      return { v0, v1, v2 };
+    }
+    
+#endif
+
+    /* Gather the triangles */
+    __forceinline void gather(Vec3vf<M>& p0, Vec3vf<M>& p1, Vec3vf<M>& p2, const Scene* const scene) const;
+
+    template<int K>
+#if defined(__INTEL_COMPILER) && (__INTEL_COMPILER < 2000) // workaround for compiler bug in ICC 2019
+    __noinline
+#else
+    __forceinline
+#endif
+    void gather(const vbool<K>& valid,
+                Vec3vf<K>& p0,
+                Vec3vf<K>& p1,
+                Vec3vf<K>& p2,
+                const size_t index,
+                const Scene* const scene,
+                const vfloat<K>& time) const
+    {
+      const TriangleMesh* mesh = scene->get<TriangleMesh>(geomID(index));
+
+      vfloat<K> ftime;
+      const vint<K> itime = mesh->timeSegment(time, ftime);
+
+      const size_t first = bsf(movemask(valid));
+      if (likely(all(valid,itime[first] == itime)))
+      {
+        p0 = getVertex<0>(index, scene, itime[first], ftime);
+        p1 = getVertex<1>(index, scene, itime[first], ftime);
+        p2 = getVertex<2>(index, scene, itime[first], ftime);
+      } else {
+        p0 = getVertex<0>(valid, index, scene, itime, ftime);
+        p1 = getVertex<1>(valid, index, scene, itime, ftime);
+        p2 = getVertex<2>(valid, index, scene, itime, ftime);
+      }
+    }
+
+    __forceinline void gather(Vec3vf<M>& p0,
+                              Vec3vf<M>& p1,
+                              Vec3vf<M>& p2,
+                              const TriangleMesh* mesh,
+                              const Scene *const scene,
+                              const int itime) const;
+
+    __forceinline void gather(Vec3vf<M>& p0,
+                              Vec3vf<M>& p1,
+                              Vec3vf<M>& p2,
+                              const Scene *const scene,
+                              const float time) const;
+
+
+#if !defined(EMBREE_COMPACT_POLYS)
+    template<int N> const vuint<M>& getVertexOffset() const;
+#endif
+  };
+
+#if !defined(EMBREE_COMPACT_POLYS)
+  template<> template<> __forceinline const vuint<4>& TriangleMi<4>::getVertexOffset<0>() const { return v0_; }
+  template<> template<> __forceinline const vuint<4>& TriangleMi<4>::getVertexOffset<1>() const { return v1_; }
+  template<> template<> __forceinline const vuint<4>& TriangleMi<4>::getVertexOffset<2>() const { return v2_; }
+#endif
+  
+  template<>
+  __forceinline void TriangleMi<4>::gather(Vec3vf4& p0,
+                                           Vec3vf4& p1,
+                                           Vec3vf4& p2,
+                                           const Scene* const scene) const
+  {
+    const Triangle tri0 = loadTriangle(0,scene);
+    const Triangle tri1 = loadTriangle(1,scene);
+    const Triangle tri2 = loadTriangle(2,scene);
+    const Triangle tri3 = loadTriangle(3,scene);
+    transpose(tri0.v0,tri1.v0,tri2.v0,tri3.v0,p0.x,p0.y,p0.z);
+    transpose(tri0.v1,tri1.v1,tri2.v1,tri3.v1,p1.x,p1.y,p1.z);
+    transpose(tri0.v2,tri1.v2,tri2.v2,tri3.v2,p2.x,p2.y,p2.z);
+  }
+
+  template<>
+  __forceinline void TriangleMi<4>::gather(Vec3vf4& p0,
+                                           Vec3vf4& p1,
+                                           Vec3vf4& p2,
+                                           const TriangleMesh* mesh,
+                                           const Scene *const scene,
+                                           const int itime) const
+  {
+    const Triangle tri0 = loadTriangle(0,itime,mesh);
+    const Triangle tri1 = loadTriangle(1,itime,mesh);
+    const Triangle tri2 = loadTriangle(2,itime,mesh);
+    const Triangle tri3 = loadTriangle(3,itime,mesh);
+    transpose(tri0.v0,tri1.v0,tri2.v0,tri3.v0,p0.x,p0.y,p0.z);
+    transpose(tri0.v1,tri1.v1,tri2.v1,tri3.v1,p1.x,p1.y,p1.z);
+    transpose(tri0.v2,tri1.v2,tri2.v2,tri3.v2,p2.x,p2.y,p2.z);
+  }
+
+  template<>
+  __forceinline void TriangleMi<4>::gather(Vec3vf4& p0,
+                                           Vec3vf4& p1,
+                                           Vec3vf4& p2,
+                                           const Scene *const scene,
+                                           const float time) const
+  {
+    const TriangleMesh* mesh = scene->get<TriangleMesh>(geomID(0)); // in mblur mode all geometries are identical
+
+    float ftime;
+    const int itime = mesh->timeSegment(time, ftime);
+
+    Vec3vf4 a0,a1,a2; gather(a0,a1,a2,mesh,scene,itime);
+    Vec3vf4 b0,b1,b2; gather(b0,b1,b2,mesh,scene,itime+1);
+    p0 = lerp(a0,b0,vfloat4(ftime));
+    p1 = lerp(a1,b1,vfloat4(ftime));
+    p2 = lerp(a2,b2,vfloat4(ftime));
+  }
+  }
+
+  template<int M>
+  typename TriangleMi<M>::Type TriangleMi<M>::type;
+
+  typedef TriangleMi<4> Triangle4i;
+}