1GLDRAWELEMENTS(3G) [FIXME: manual] GLDRAWELEMENTS(3G)
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6 glDrawElements - render primitives from array data
7
9 void glDrawElements(GLenum mode, GLsizei count, GLenum type,
10 const GLvoid * indices);
11
13 mode
14 Specifies what kind of primitives to render. Symbolic constants
15 GL_POINTS, GL_LINE_STRIP, GL_LINE_LOOP, GL_LINES,
16 GL_LINE_STRIP_ADJACENCY, GL_LINES_ADJACENCY, GL_TRIANGLE_STRIP,
17 GL_TRIANGLE_FAN, GL_TRIANGLES, GL_TRIANGLE_STRIP_ADJACENCY,
18 GL_TRIANGLES_ADJACENCY and GL_PATCHES are accepted.
19 count
21 Specifies the number of elements to be rendered.
22 type
24 Specifies the type of the values in indices. Must be one of
25 GL_UNSIGNED_BYTE, GL_UNSIGNED_SHORT, or GL_UNSIGNED_INT.
26 indices
28 Specifies a pointer to the location where the indices are stored.
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31 glDrawElements specifies multiple geometric primitives with very few
32 subroutine calls. Instead of calling a GL function to pass each
33 individual vertex, normal, texture coordinate, edge flag, or color, you
34 can prespecify separate arrays of vertices, normals, and so on, and use
35 them to construct a sequence of primitives with a single call to
36 glDrawElements.
37 When glDrawElements is called, it uses count sequential elements from
39 an enabled array, starting at indices to construct a sequence of
40 geometric primitives. mode specifies what kind of primitives are
41 constructed and how the array elements construct these primitives. If
42 more than one array is enabled, each is used.
43 Vertex attributes that are modified by glDrawElements have an
45 unspecified value after glDrawElements returns. Attributes that aren't
46 modified maintain their previous values.
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49 GL_LINE_STRIP_ADJACENCY, GL_LINES_ADJACENCY,
50 GL_TRIANGLE_STRIP_ADJACENCY and GL_TRIANGLES_ADJACENCY are available
51 only if the GL version is 3.2 or greater.
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54 GL_INVALID_ENUM is generated if mode is not an accepted value.
55 GL_INVALID_VALUE is generated if count is negative.
57 GL_INVALID_OPERATION is generated if a geometry shader is active and
59 mode is incompatible with the input primitive type of the geometry
60 shader in the currently installed program object.
61 GL_INVALID_OPERATION is generated if a non-zero buffer object name is
63 bound to an enabled array or the element array and the buffer object's
64 data store is currently mapped.
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67 ┌───────────────┬───────────────────────────────────────────────────────────────────────┐
68 │ │ OpenGL Version │
69 ├───────────────┼─────┬─────┬─────┬─────┬─────┬─────┬─────┬─────┬─────┬─────┬─────┬─────┤
70 │Function │ 2.0 │ 2.1 │ 3.0 │ 3.1 │ 3.2 │ 3.3 │ 4.0 │ 4.1 │ 4.2 │ 4.3 │ 4.4 │ 4.5 │
71 │/ │ │ │ │ │ │ │ │ │ │ │ │ │
72 │Feature │ │ │ │ │ │ │ │ │ │ │ │ │
73 │Name │ │ │ │ │ │ │ │ │ │ │ │ │
74 ├───────────────┼─────┼─────┼─────┼─────┼─────┼─────┼─────┼─────┼─────┼─────┼─────┼─────┤
75 │glDrawElements │ ✔ │ ✔ │ ✔ │ ✔ │ ✔ │ ✔ │ ✔ │ ✔ │ ✔ │ ✔ │ ✔ │ ✔ │
76 └───────────────┴─────┴─────┴─────┴─────┴─────┴─────┴─────┴─────┴─────┴─────┴─────┴─────┘
77
79 glDrawArrays(), glDrawElementsInstanced(), glDrawElementsBaseVertex(),
80 glDrawRangeElements()
81
83 Copyright © 1991-2006 Silicon Graphics, Inc. Copyright © 2010-2014
84 Khronos Group. This document is licensed under the SGI Free Software B
85 License. For details, see http://oss.sgi.com/projects/FreeB/.
86
88 Copyright © 1991-2006 Silicon Graphics, Inc.
89 Copyright © 2010-2014 Khronos Group
90[FIXME: source] 03/06/2019 GLDRAWELEMENTS(3G)