initial commit, 4.5 stable

thirdparty/embree/kernels/bvh/bvh_node_obb_mb.h

@@ -0,0 +1,90 @@
+// Copyright 2009-2021 Intel Corporation
+// SPDX-License-Identifier: Apache-2.0
+
+#pragma once
+
+#include "bvh_node_base.h"
+
+namespace embree
+{
+  template<typename NodeRef, int N>
+    struct OBBNodeMB_t : public BaseNode_t<NodeRef, N>
+  {
+    using BaseNode_t<NodeRef,N>::children;
+    
+    struct Create
+    {
+      __forceinline NodeRef operator() (const FastAllocator::CachedAllocator& alloc) const
+      {
+        OBBNodeMB_t* node = (OBBNodeMB_t*) alloc.malloc0(sizeof(OBBNodeMB_t),NodeRef::byteNodeAlignment); node->clear();
+        return NodeRef::encodeNode(node);
+      }
+    };
+    
+    struct Set
+    {
+      __forceinline void operator() (NodeRef node, size_t i, NodeRef child, const LinearSpace3fa& space, const LBBox3fa& lbounds, const BBox1f dt) const {
+        node.ungetAABBNodeMB()->setRef(i,child);
+        node.ungetAABBNodeMB()->setBounds(i,space,lbounds.global(dt));
+      }
+    };
+    
+    /*! Clears the node. */
+    __forceinline void clear()
+    {
+      space0 = one;
+      //b0.lower = b0.upper = Vec3fa(nan);
+      b1.lower = b1.upper = Vec3fa(nan);
+      BaseNode_t<NodeRef,N>::clear();
+    }
+    
+    /*! Sets space and bounding boxes. */
+    __forceinline void setBounds(size_t i, const AffineSpace3fa& space, const LBBox3fa& lbounds) {
+      setBounds(i,space,lbounds.bounds0,lbounds.bounds1);
+    }
+    
+    /*! Sets space and bounding boxes. */
+    __forceinline void setBounds(size_t i, const AffineSpace3fa& s0, const BBox3fa& a, const BBox3fa& c)
+    {
+      assert(i < N);
+      
+      AffineSpace3fa space = s0;
+      space.p -= a.lower;
+      Vec3fa scale = 1.0f/max(Vec3fa(1E-19f),a.upper-a.lower);
+      space = AffineSpace3fa::scale(scale)*space;
+      BBox3fa a1((a.lower-a.lower)*scale,(a.upper-a.lower)*scale);
+      BBox3fa c1((c.lower-a.lower)*scale,(c.upper-a.lower)*scale);
+      
+      space0.l.vx.x[i] = space.l.vx.x; space0.l.vx.y[i] = space.l.vx.y; space0.l.vx.z[i] = space.l.vx.z;
+      space0.l.vy.x[i] = space.l.vy.x; space0.l.vy.y[i] = space.l.vy.y; space0.l.vy.z[i] = space.l.vy.z;
+      space0.l.vz.x[i] = space.l.vz.x; space0.l.vz.y[i] = space.l.vz.y; space0.l.vz.z[i] = space.l.vz.z;
+      space0.p   .x[i] = space.p   .x; space0.p   .y[i] = space.p   .y; space0.p   .z[i] = space.p   .z;
+      
+      /*b0.lower.x[i] = a1.lower.x; b0.lower.y[i] = a1.lower.y; b0.lower.z[i] = a1.lower.z;
+        b0.upper.x[i] = a1.upper.x; b0.upper.y[i] = a1.upper.y; b0.upper.z[i] = a1.upper.z;*/
+      
+      b1.lower.x[i] = c1.lower.x; b1.lower.y[i] = c1.lower.y; b1.lower.z[i] = c1.lower.z;
+      b1.upper.x[i] = c1.upper.x; b1.upper.y[i] = c1.upper.y; b1.upper.z[i] = c1.upper.z;
+    }
+    
+    /*! Sets ID of child. */
+    __forceinline void setRef(size_t i, const NodeRef& ref) {
+      assert(i < N);
+      children[i] = ref;
+    }
+    
+    /*! Returns the extent of the bounds of the ith child */
+    __forceinline Vec3fa extent0(size_t i) const {
+      assert(i < N);
+      const Vec3fa vx(space0.l.vx.x[i],space0.l.vx.y[i],space0.l.vx.z[i]);
+      const Vec3fa vy(space0.l.vy.x[i],space0.l.vy.y[i],space0.l.vy.z[i]);
+      const Vec3fa vz(space0.l.vz.x[i],space0.l.vz.y[i],space0.l.vz.z[i]);
+      return rsqrt(vx*vx + vy*vy + vz*vz);
+    }
+    
+  public:
+    AffineSpace3vf<N> space0;
+    //BBox3vf<N> b0; // these are the unit bounds
+    BBox3vf<N> b1;
+  };
+}