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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 (C) 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				    06/10/2014			      GLCOLORSUBTABLE(3G)
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