glCopyColorSubTable(3G) OpenGL Reference glCopyColorSubTable(3G)NAME
glCopyColorSubTable - respecify a portion of a color table
C SPECIFICATION
void glCopyColorSubTable( GLenum target,
GLsizei start,
GLint x,
GLint y,
GLsizei width )
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.
x, y The window coordinates of the left corner of the row of pixels to
be copied.
width The number of table entries to replace.
DESCRIPTION
glCopyColorSubTable is used to respecify a contiguous portion of a color
table previously defined using glColorTable. The pixels copied from the
framebuffer replace the portion of the existing table from indices start
to $"start"~+~"x"~-~1$, inclusive. This region may not include any
entries outside the range of the color table, as was originally
specified. It is not an error to specify a subtexture with width of 0,
but such a specification has no effect.
NOTES
glCopyColorSubTable is present only if GL_ARB_imaging is returned when
glGetString is called with an argument of GL_EXTENSIONS.
ERRORS
GL_INVALID_VALUE is generated if target is not a previously defined color
table.
GL_INVALID_VALUE is generated if target is not one of the allowable
values.
GL_INVALID_VALUE is generated if $"start"~+~"x"~>~width$.
GL_INVALID_OPERATION is generated if glCopyColorSubTable is executed
between the execution of glBegin and the corresponding execution of
glEnd.
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glCopyColorSubTable(3G) OpenGL Reference glCopyColorSubTable(3G)ASSOCIATED GETS
glGetColorTable, glGetColorTableParameter
SEE ALSO
glColorSubTable, glColorTableParameter, glCopyColorTable,
glCopyColorSubTable, glGetColorTable
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