glColorSubTable — respecify a portion of a color table
void glColorSubTable( | GLenum | target, |
GLsizei | start, | |
GLsizei | count, | |
GLenum | format, | |
GLenum | type, | |
const GLvoid * | data) ; |
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.
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
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.
glColorSubTable
is present only if ARB_imaging
is returned when glGetString
is called with an argument of GL_EXTENSIONS
.
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
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.
glGetColorTable, glGetColorTableParameter
glGet with argument GL_PIXEL_UNPACK_BUFFER_BINDING
glColorTable, glColorTableParameter, glCopyColorTable, glCopyColorSubTable, glGetColorTable
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/.