glColorSubTable man page on Oracle
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GLCOLORSUBTABLE(3G) OpenGL Manual GLCOLORSUBTABLE(3G)
NAME
glColorSubTable - respecify a portion of a color table
C SPECIFICATION
void glColorSubTable(GLenum target, GLsizei start, GLsizei count,
GLenum format, GLenum type, const GLvoid * data);
PARAMETERS
target
Must be one of GL_COLOR_TABLE, GL_POST_CONVOLUTION_COLOR_TABLE, or
GL_POST_COLOR_MATRIX_COLOR_TABLE.
start
The starting index of the portion of the color table to be
replaced.
count
The number of table entries to replace.
format
The format of the pixel data in data. The allowable values are
GL_RED, GL_GREEN, GL_BLUE, GL_ALPHA, GL_LUMINANCE,
GL_LUMINANCE_ALPHA, GL_RGB, GL_BGR, GL_RGBA, and GL_BGRA.
type
The type of the pixel data in data. The allowable values are
GL_UNSIGNED_BYTE, GL_BYTE, GL_UNSIGNED_SHORT, GL_SHORT,
GL_UNSIGNED_INT, GL_INT, GL_FLOAT, GL_UNSIGNED_BYTE_3_3_2,
GL_UNSIGNED_BYTE_2_3_3_REV, GL_UNSIGNED_SHORT_5_6_5,
GL_UNSIGNED_SHORT_5_6_5_REV, GL_UNSIGNED_SHORT_4_4_4_4,
GL_UNSIGNED_SHORT_4_4_4_4_REV, GL_UNSIGNED_SHORT_5_5_5_1,
GL_UNSIGNED_SHORT_1_5_5_5_REV, GL_UNSIGNED_INT_8_8_8_8,
GL_UNSIGNED_INT_8_8_8_8_REV, GL_UNSIGNED_INT_10_10_10_2, and
GL_UNSIGNED_INT_2_10_10_10_REV.
data
Pointer to a one-dimensional array of pixel data that is processed
to replace the specified region of the color table.
DESCRIPTION
glColorSubTable is used to respecify a contiguous portion of a color
table previously defined using glColorTable(). The pixels referenced by
data replace the portion of the existing table from indices start to
start + count - 1, inclusive. This region may not include any entries
outside the range of the color table as it was originally specified. It
is not an error to specify a subtexture with width of 0, but such a
specification has no effect.
If a non-zero named buffer object is bound to the
GL_PIXEL_UNPACK_BUFFER target (see glBindBuffer()) while a portion of a
color table is respecified, data is treated as a byte offset into the
buffer object's data store.
NOTES
glColorSubTable is present only if ARB_imaging is returned when
glGetString() is called with an argument of GL_EXTENSIONS.
ERRORS
GL_INVALID_ENUM is generated if target is not one of the allowable
values.
GL_INVALID_ENUM is generated if format is not one of the allowable
values.
GL_INVALID_ENUM is generated if type is not one of the allowable
values.
GL_INVALID_VALUE is generated if start + count > width.
GL_INVALID_OPERATION is generated if a non-zero buffer object name is
bound to the GL_PIXEL_UNPACK_BUFFER target and the buffer object's data
store is currently mapped.
GL_INVALID_OPERATION is generated if a non-zero buffer object name is
bound to the GL_PIXEL_UNPACK_BUFFER target and the data would be
unpacked from the buffer object such that the memory reads required
would exceed the data store size.
GL_INVALID_OPERATION is generated if a non-zero buffer object name is
bound to the GL_PIXEL_UNPACK_BUFFER target and data is not evenly
divisible into the number of bytes needed to store in memory a datum
indicated by type.
GL_INVALID_OPERATION is generated if glColorSubTable is executed
between the execution of glBegin() and the corresponding execution of
glEnd().
ASSOCIATED GETS
glGetColorTable(), glGetColorTableParameter()
glGet() with argument GL_PIXEL_UNPACK_BUFFER_BINDING
SEE ALSO
glColorTable(), glColorTableParameter(), glCopyColorTable(),
glCopyColorSubTable(), glGetColorTable()
COPYRIGHT
Copyright © 1991-2006 Silicon Graphics, Inc. This document is licensed
under the SGI Free Software B License. For details, see
http://oss.sgi.com/projects/FreeB/.
AUTHORS
opengl.org
opengl.org 04/29/2014 GLCOLORSUBTABLE(3G)
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