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