File: differential_geometry.isph

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embree 4.3.3%2Bdfsg-1
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// Copyright 2009-2021 Intel Corporation
// SPDX-License-Identifier: Apache-2.0

#pragma once

#include "../../../include/embree4/rtcore.isph"
#include "../math/vec.isph"

struct DifferentialGeometry
{
  unsigned int instIDs[RTC_MAX_INSTANCE_LEVEL_COUNT];
  unsigned int geomID;
  unsigned int primID;
  float u,v;
  Vec3f P;
  Vec3f Ng;
  Vec3f Ns;
  Vec3f Tx; //direction along hair
  Vec3f Ty;
  float eps;
};