Function uniformSampleDisk

tutorials/common/math/sampling.h:124–132

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inline Vec3fa uniformSampleDisk(const float radius, const Vec2f &s)
{
  const float r = sqrtf(s.x) * radius;
  const float phi =float(two_pi) * s.y;
  const float sinPhi = sinf(phi);
  const float cosPhi = cosf(phi);
  //sincosf(phi, &sinPhi, &cosPhi);
  return Vec3fa(r * cosPhi, r * sinPhi, 0.f);
}

inline float uniformSampleDiskPDF(const float radius)
{