1GLCOLORSUBTABLE(3G)              OpenGL Manual             GLCOLORSUBTABLE(3G)
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NAME

6       glColorSubTable - respecify a portion of a color table
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C SPECIFICATION

9       void glColorSubTable(GLenum target, GLsizei start, GLsizei count,
10                            GLenum format, GLenum type, const GLvoid * data);
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PARAMETERS

13       target
14           Must be one of GL_COLOR_TABLE, GL_POST_CONVOLUTION_COLOR_TABLE, or
15           GL_POST_COLOR_MATRIX_COLOR_TABLE.
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17       start
18           The starting index of the portion of the color table to be
19           replaced.
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21       count
22           The number of table entries to replace.
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24       format
25           The format of the pixel data in data. The allowable values are
26           GL_RED, GL_GREEN, GL_BLUE, GL_ALPHA, GL_LUMINANCE,
27           GL_LUMINANCE_ALPHA, GL_RGB, GL_BGR, GL_RGBA, and GL_BGRA.
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29       type
30           The type of the pixel data in data. The allowable values are
31           GL_UNSIGNED_BYTE, GL_BYTE, GL_UNSIGNED_SHORT, GL_SHORT,
32           GL_UNSIGNED_INT, GL_INT, GL_FLOAT, GL_UNSIGNED_BYTE_3_3_2,
33           GL_UNSIGNED_BYTE_2_3_3_REV, GL_UNSIGNED_SHORT_5_6_5,
34           GL_UNSIGNED_SHORT_5_6_5_REV, GL_UNSIGNED_SHORT_4_4_4_4,
35           GL_UNSIGNED_SHORT_4_4_4_4_REV, GL_UNSIGNED_SHORT_5_5_5_1,
36           GL_UNSIGNED_SHORT_1_5_5_5_REV, GL_UNSIGNED_INT_8_8_8_8,
37           GL_UNSIGNED_INT_8_8_8_8_REV, GL_UNSIGNED_INT_10_10_10_2, and
38           GL_UNSIGNED_INT_2_10_10_10_REV.
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40       data
41           Pointer to a one-dimensional array of pixel data that is processed
42           to replace the specified region of the color table.
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DESCRIPTION

45       glColorSubTable is used to respecify a contiguous portion of a color
46       table previously defined using glColorTable(). The pixels referenced by
47       data replace the portion of the existing table from indices start to
48       start + count - 1, inclusive. This region may not include any entries
49       outside the range of the color table as it was originally specified. It
50       is not an error to specify a subtexture with width of 0, but such a
51       specification has no effect.
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53       If a non-zero named buffer object is bound to the
54       GL_PIXEL_UNPACK_BUFFER target (see glBindBuffer()) while a portion of a
55       color table is respecified, data is treated as a byte offset into the
56       buffer object's data store.
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NOTES

59       glColorSubTable is present only if ARB_imaging is returned when
60       glGetString() is called with an argument of GL_EXTENSIONS.
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ERRORS

63       GL_INVALID_ENUM is generated if target is not one of the allowable
64       values.
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66       GL_INVALID_ENUM is generated if format is not one of the allowable
67       values.
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69       GL_INVALID_ENUM is generated if type is not one of the allowable
70       values.
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72       GL_INVALID_VALUE is generated if start + count > width.
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74       GL_INVALID_OPERATION is generated if a non-zero buffer object name is
75       bound to the GL_PIXEL_UNPACK_BUFFER target and the buffer object's data
76       store is currently mapped.
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78       GL_INVALID_OPERATION is generated if a non-zero buffer object name is
79       bound to the GL_PIXEL_UNPACK_BUFFER target and the data would be
80       unpacked from the buffer object such that the memory reads required
81       would exceed the data store size.
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83       GL_INVALID_OPERATION is generated if a non-zero buffer object name is
84       bound to the GL_PIXEL_UNPACK_BUFFER target and data is not evenly
85       divisible into the number of bytes needed to store in memory a datum
86       indicated by type.
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88       GL_INVALID_OPERATION is generated if glColorSubTable is executed
89       between the execution of glBegin() and the corresponding execution of
90       glEnd().
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ASSOCIATED GETS

93       glGetColorTable(), glGetColorTableParameter()
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95       glGet() with argument GL_PIXEL_UNPACK_BUFFER_BINDING
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SEE ALSO

98       glColorTable(), glColorTableParameter(), glCopyColorTable(),
99       glCopyColorSubTable(), glGetColorTable()
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102       Copyright © 1991-2006 Silicon Graphics, Inc. This document is licensed
103       under the SGI Free Software B License. For details, see
104       http://oss.sgi.com/projects/FreeB/.
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AUTHORS

107       opengl.org
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111opengl.org                        07/13/2018               GLCOLORSUBTABLE(3G)
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