glColorSubTable, 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/.
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glCopyColorSubTable: man2/glCopyColorSubTable.xml
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.
glCopyColorSubTable is present only if ARB_imaging is returned when glGetString is called with an argument of GL_EXTENSIONS.