glColorSubTable(3gl)

1GLCOLORSUBTABLE(3G)                                        GLCOLORSUBTABLE(3G)
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NAME

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

10       void glColorSubTable( GLenum target,
11                             GLsizei start,
12                             GLsizei count,
13                             GLenum format,
14                             GLenum type,
15                             const GLvoid *data )
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PARAMETERS

19       target  Must be one of GL_COLOR_TABLE, GL_POST_CONVOLUTION_COLOR_TABLE,
20               or GL_POST_COLOR_MATRIX_COLOR_TABLE.
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22       start   The starting index of the portion of  the  color  table  to  be
23               replaced.
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25       count   The number of table entries to replace.
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27       format  The   of  the  pixel  data  in  data.  The allowable values are
28               GL_RED,    GL_GREEN,    GL_BLUE,    GL_ALPHA,     GL_LUMINANCE,
29               GL_LUMINANCE_ALPHA, GL_RGB, GL_BGR, GL_RGBA, and GL_BGRA.
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31       type    The  type  of the pixel data in data.  The allowable values are
32               GL_UNSIGNED_BYTE,   GL_BYTE,    GL_UNSIGNED_SHORT,    GL_SHORT,
33               GL_UNSIGNED_INT,   GL_INT,   GL_FLOAT,  GL_UNSIGNED_BYTE_3_3_2,
34               GL_UNSIGNED_BYTE_2_3_3_REV,            GL_UNSIGNED_SHORT_5_6_5,
35               GL_UNSIGNED_SHORT_5_6_5_REV,         GL_UNSIGNED_SHORT_4_4_4_4,
36               GL_UNSIGNED_SHORT_4_4_4_4_REV,       GL_UNSIGNED_SHORT_5_5_5_1,
37               GL_UNSIGNED_SHORT_1_5_5_5_REV,         GL_UNSIGNED_INT_8_8_8_8,
38               GL_UNSIGNED_INT_8_8_8_8_REV,  GL_UNSIGNED_INT_10_10_10_2,   and
39               GL_UNSIGNED_INT_2_10_10_10_REV.
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41       data    Pointer  to  a one-dimensional array of pixel data that is pro‐
42               cessed 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
49       entries outside the range of the color table as it was originally spec‐
50       ified.  It is not an error to specify a subtexture with width of 0, but
51       such a specification has no effect.
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NOTES

54       glColorSubTable is present only  if  GL_ARB_imaging  is  returned  when
55       glGetString is called with an argument of GL_EXTENSIONS.
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ERRORS

58       GL_INVALID_ENUM is generated if target is not one of the allowable val‐
59       ues.
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61       GL_INVALID_VALUE is generated if $"start"~+~"count"~>~width$.
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63       GL_INVALID_ENUM is generated if format is not one of the allowable val‐
64       ues.
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66       GL_INVALID_ENUM  is  generated if type is not one of the allowable val‐
67       ues.
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69       GL_INVALID_OPERATION  is  generated  if  glColorSubTable  is   executed
70       between  the  execution  of  glBegin and the corresponding execution of
71       glEnd.
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ASSOCIATED GETS

74       glGetColorTable, glGetColorTableParameter
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