1RTCHitN(3)               Embree Ray Tracing Kernels 3               RTCHitN(3)
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3
4
5   NAME
6              RTCHitN - hit packet of runtime size
7
8   SYNOPSIS
9              #include <embree3/rtcore.h>
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11              struct HitN;
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13              float& RTCHitN_Ng_x(RTCHitN* hit, unsigned int N, unsigned int i);
14              float& RTCHitN_Ng_y(RTCHitN* hit, unsigned int N, unsigned int i);
15              float& RTCHitN_Ng_z(RTCHitN* hit, unsigned int N, unsigned int i);
16
17              float& RTCHitN_u(RTCHitN* hit, unsigned int N, unsigned int i);
18              float& RTCHitN_v(RTCHitN* hit, unsigned int N, unsigned int i);
19
20              unsigned& RTCHitN_primID(RTCHitN* hit, unsigned int N, unsigned int i);
21              unsigned& RTCHitN_geomID(RTCHitN* hit, unsigned int N, unsigned int i);
22              unsigned& RTCHitN_instID(RTCHitN* hit, unsigned int N, unsigned int i, unsigned int level);
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24   DESCRIPTION
25       When the hit packet size is not known at compile time (e.g. when Embree
26       returns a hit packet in the RTCFilterFuncN callback  function),  Embree
27       uses the RTCHitN type for hit packets.  These hit packets can only have
28       sizes of 1, 4, 8, or 16.  No other packet size will be used.
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30       You can either implement different special code paths for each of these
31       possible  packet  sizes  and cast the hit to the appropriate hit packet
32       type, or implement one general code  path  that  uses  the  RTCHitN_XXX
33       helper functions to access hit packet components.
34
35       These  helper functions get a pointer to the hit packet (hit argument),
36       the packet size (N argument), and returns a reference  to  a  component
37       (e.g. x  component  of  Ng)  of the the i-th hit of the packet (i argu‐
38       ment).
39
40   EXIT STATUS
41   SEE ALSO
42       [RTCRayN]
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46                                                                    RTCHitN(3)