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-rw-r--r--thirdparty/embree/kernels/common/primref.h138
1 files changed, 138 insertions, 0 deletions
diff --git a/thirdparty/embree/kernels/common/primref.h b/thirdparty/embree/kernels/common/primref.h
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+++ b/thirdparty/embree/kernels/common/primref.h
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+// Copyright 2009-2021 Intel Corporation
+// SPDX-License-Identifier: Apache-2.0
+
+#pragma once
+
+#include "default.h"
+
+namespace embree
+{
+ /*! A primitive reference stores the bounds of the primitive and its ID. */
+ struct __aligned(32) PrimRef
+ {
+ __forceinline PrimRef () {}
+
+#if defined(__AVX__)
+ __forceinline PrimRef(const PrimRef& v) {
+ vfloat8::store((float*)this,vfloat8::load((float*)&v));
+ }
+ __forceinline PrimRef& operator=(const PrimRef& v) {
+ vfloat8::store((float*)this,vfloat8::load((float*)&v)); return *this;
+ }
+#endif
+
+ __forceinline PrimRef (const BBox3fa& bounds, unsigned int geomID, unsigned int primID)
+ {
+ lower = Vec3fx(bounds.lower, geomID);
+ upper = Vec3fx(bounds.upper, primID);
+ }
+
+ __forceinline PrimRef (const BBox3fa& bounds, size_t id)
+ {
+#if defined(__64BIT__)
+ lower = Vec3fx(bounds.lower, (unsigned)(id & 0xFFFFFFFF));
+ upper = Vec3fx(bounds.upper, (unsigned)((id >> 32) & 0xFFFFFFFF));
+#else
+ lower = Vec3fx(bounds.lower, (unsigned)id);
+ upper = Vec3fx(bounds.upper, (unsigned)0);
+#endif
+ }
+
+ /*! calculates twice the center of the primitive */
+ __forceinline const Vec3fa center2() const {
+ return lower+upper;
+ }
+
+ /*! return the bounding box of the primitive */
+ __forceinline const BBox3fa bounds() const {
+ return BBox3fa(lower,upper);
+ }
+
+ /*! size for bin heuristic is 1 */
+ __forceinline unsigned size() const {
+ return 1;
+ }
+
+ /*! returns bounds and centroid used for binning */
+ __forceinline void binBoundsAndCenter(BBox3fa& bounds_o, Vec3fa& center_o) const
+ {
+ bounds_o = bounds();
+ center_o = embree::center2(bounds_o);
+ }
+
+ __forceinline unsigned& geomIDref() { // FIXME: remove !!!!!!!
+ return lower.u;
+ }
+ __forceinline unsigned& primIDref() { // FIXME: remove !!!!!!!
+ return upper.u;
+ }
+
+ /*! returns the geometry ID */
+ __forceinline unsigned geomID() const {
+ return lower.a;
+ }
+
+ /*! returns the primitive ID */
+ __forceinline unsigned primID() const {
+ return upper.a;
+ }
+
+ /*! returns an size_t sized ID */
+ __forceinline size_t ID() const {
+#if defined(__64BIT__)
+ return size_t(lower.u) + (size_t(upper.u) << 32);
+#else
+ return size_t(lower.u);
+#endif
+ }
+
+ /*! special function for operator< */
+ __forceinline uint64_t ID64() const {
+ return (((uint64_t)primID()) << 32) + (uint64_t)geomID();
+ }
+
+ /*! allows sorting the primrefs by ID */
+ friend __forceinline bool operator<(const PrimRef& p0, const PrimRef& p1) {
+ return p0.ID64() < p1.ID64();
+ }
+
+ /*! Outputs primitive reference to a stream. */
+ friend __forceinline embree_ostream operator<<(embree_ostream cout, const PrimRef& ref) {
+ return cout << "{ lower = " << ref.lower << ", upper = " << ref.upper << ", geomID = " << ref.geomID() << ", primID = " << ref.primID() << " }";
+ }
+
+ public:
+ Vec3fx lower; //!< lower bounds and geomID
+ Vec3fx upper; //!< upper bounds and primID
+ };
+
+ /*! fast exchange for PrimRefs */
+ __forceinline void xchg(PrimRef& a, PrimRef& b)
+ {
+#if defined(__AVX__)
+ const vfloat8 aa = vfloat8::load((float*)&a);
+ const vfloat8 bb = vfloat8::load((float*)&b);
+ vfloat8::store((float*)&a,bb);
+ vfloat8::store((float*)&b,aa);
+#else
+ std::swap(a,b);
+#endif
+ }
+
+ /************************************************************************************/
+ /************************************************************************************/
+ /************************************************************************************/
+ /************************************************************************************/
+
+ struct SubGridBuildData {
+ unsigned short sx,sy;
+ unsigned int primID;
+
+ __forceinline SubGridBuildData() {};
+ __forceinline SubGridBuildData(const unsigned int sx, const unsigned int sy, const unsigned int primID) : sx(sx), sy(sy), primID(primID) {};
+
+ __forceinline size_t x() const { return (size_t)sx & 0x7fff; }
+ __forceinline size_t y() const { return (size_t)sy & 0x7fff; }
+
+ };
+}