1RTCBufferType(3)         Embree Ray Tracing Kernels 4         RTCBufferType(3)
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3
4
5   NAME
6              RTCFormat - specifies format of data in buffers
7
8   SYNOPSIS
9              #include <embree4/rtcore_ray.h>
10
11              enum RTCBufferType
12              {
13                RTC_BUFFER_TYPE_INDEX            = 0,
14                RTC_BUFFER_TYPE_VERTEX           = 1,
15                RTC_BUFFER_TYPE_VERTEX_ATTRIBUTE = 2,
16                RTC_BUFFER_TYPE_NORMAL           = 3,
17                RTC_BUFFER_TYPE_TANGENT          = 4,
18                RTC_BUFFER_TYPE_NORMAL_DERIVATIVE = 5,
19
20                RTC_BUFFER_TYPE_GRID                 = 8,
21
22                RTC_BUFFER_TYPE_FACE                 = 16,
23                RTC_BUFFER_TYPE_LEVEL                = 17,
24                RTC_BUFFER_TYPE_EDGE_CREASE_INDEX    = 18,
25                RTC_BUFFER_TYPE_EDGE_CREASE_WEIGHT   = 19,
26                RTC_BUFFER_TYPE_VERTEX_CREASE_INDEX  = 20,
27                RTC_BUFFER_TYPE_VERTEX_CREASE_WEIGHT = 21,
28                RTC_BUFFER_TYPE_HOLE                 = 22,
29
30                RTC_BUFFER_TYPE_TRANSFORM            = 23,
31
32                RTC_BUFFER_TYPE_FLAGS = 32
33              };
34
35   DESCRIPTION
36       The  RTBufferType structure defines slots to assign data buffers to us‐
37       ing the [rtcSetGeometryBuffer], [rtcSetSharedGeometryBuffer], and [rtc‐
38       SetNewGeometryBuffer] API calls.
39
40       For  most  geometry types the RTC_BUFFER_TYPE_INDEX slot is used to as‐
41       sign an index buffer, while the RTC_BUFFER_TYPE_VERTEX is used  to  as‐
42       sign the corresponding vertex buffer.
43
44       The  RTC_BUFFER_TYPE_VERTEX_ATTRIBUTE slot can get used to assign arbi‐
45       trary additional vertex data  which  can  get  interpolated  using  the
46       [rtcInterpolate] API call.
47
48       The   RTC_BUFFER_TYPE_NORMAL,   RTC_BUFFER_TYPE_TANGENT,  and  RTC_BUF‐
49       FER_TYPE_NORMAL_DERIVATIVE are special buffers required to  assign  per
50       vertex normals, tangents, and normal derivatives for some curve types.
51
52       The  RTC_BUFFER_TYPE_GRID  buffer  is used to assign the grid primitive
53       buffer for grid geometries (see [RTC_GEOMETRY_TYPE_GRID]).
54
55       The     RTC_BUFFER_TYPE_FACE,      RTC_BUFFER_TYPE_LEVEL,      RTC_BUF‐
56       FER_TYPE_EDGE_CREASE_INDEX,         RTC_BUFFER_TYPE_EDGE_CREASE_WEIGHT,
57       RTC_BUFFER_TYPE_VERTEX_CREASE_INDEX,               RTC_BUFFER_TYPE_VER‐
58       TEX_CREASE_WEIGHT,  and  RTC_BUFFER_TYPE_HOLE  are  special buffers re‐
59       quired to create subdivision  meshes  (see  [RTC_GEOMETRY_TYPE_SUBDIVI‐
60       SION]).
61
62       The RTC_BUFFER_TYPE_TRANSFORM buffer is used to provide instance trans‐
63       formation information for instance array  geometries  (see  [RTC_GEOME‐
64       TRY_TYPE_INSTANCE_ARRAY]).
65
66       The RTC_BUFFER_TYPE_FLAGS can get used to add additional flag per prim‐
67       itive of a geometry, and is currently only used for linear curves.
68
69   EXIT STATUS
70   SEE ALSO
71       [rtcSetGeometryBuffer], [rtcSetSharedGeometryBuffer],  [rtcSetNewGeome‐
72       tryBuffer]
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75
76                                                              RTCBufferType(3)