glIndexPointer man page on RedHat
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GLINDEXPOINTER(3G) OpenGL Manual GLINDEXPOINTER(3G)
NAME
glIndexPointer - define an array of color indexes
C SPECIFICATION
void glIndexPointer(GLenum type, GLsizei stride,
const GLvoid * pointer);
PARAMETERS
type
Specifies the data type of each color index in the array. Symbolic
constants GL_UNSIGNED_BYTE, GL_SHORT, GL_INT, GL_FLOAT, and
GL_DOUBLE are accepted. The initial value is GL_FLOAT.
stride
Specifies the byte offset between consecutive color indexes. If
stride is 0, the color indexes are understood to be tightly packed
in the array. The initial value is 0.
pointer
Specifies a pointer to the first index in the array. The initial
value is 0.
DESCRIPTION
glIndexPointer specifies the location and data format of an array of
color indexes to use when rendering. type specifies the data type of
each color index and stride specifies the byte stride from one color
index to the next, allowing vertices and attributes to be packed into a
single array or stored in separate arrays.
If a non-zero named buffer object is bound to the GL_ARRAY_BUFFER
target (see glBindBuffer()) while a color index array is specified,
pointer is treated as a byte offset into the buffer object's data
store. Also, the buffer object binding (GL_ARRAY_BUFFER_BINDING) is
saved as color index vertex array client-side state
(GL_INDEX_ARRAY_BUFFER_BINDING).
When a color index array is specified, type, stride, and pointer are
saved as client-side state, in addition to the current vertex array
buffer object binding.
To enable and disable the color index array, call glEnableClientState()
and glDisableClientState() with the argument GL_INDEX_ARRAY. If
enabled, the color index array is used when glDrawArrays(),
glMultiDrawArrays(), glDrawElements(), glMultiDrawElements(),
glDrawRangeElements(), or glArrayElement() is called.
NOTES
glIndexPointer is available only if the GL version is 1.1 or greater.
Color indexes are not supported for interleaved vertex array formats
(see glInterleavedArrays()).
The color index array is initially disabled and isn't accessed when
glArrayElement(), glDrawElements(), glDrawRangeElements(),
glDrawArrays(), glMultiDrawArrays(), or glMultiDrawElements() is
called.
Execution of glIndexPointer is not allowed between glBegin() and the
corresponding glEnd(), but an error may or may not be generated. If an
error is not generated, the operation is undefined.
glIndexPointer is typically implemented on the client side.
Color index array parameters are client-side state and are therefore
not saved or restored by glPushAttrib() and glPopAttrib(). Use
glPushClientAttrib() and glPopClientAttrib() instead.
ERRORS
GL_INVALID_ENUM is generated if type is not an accepted value.
GL_INVALID_VALUE is generated if stride is negative.
ASSOCIATED GETS
glIsEnabled() with argument GL_INDEX_ARRAY
glGet() with argument GL_INDEX_ARRAY_TYPE
glGet() with argument GL_INDEX_ARRAY_STRIDE
glGet() with argument GL_INDEX_ARRAY_BUFFER_BINDING
glGet() with argument GL_ARRAY_BUFFER_BINDING
glGetPointerv() with argument GL_INDEX_ARRAY_POINTER
SEE ALSO
glArrayElement(), glBindBuffer(), glColorPointer(),
glDisableClientState(), glDrawArrays(), glDrawElements(),
glDrawRangeElements(), glEdgeFlagPointer(), glEnableClientState(),
glFogCoordPointer(), glIndex(), glInterleavedArrays(),
glMultiDrawArrays(), glMultiDrawElements(), glNormalPointer(),
glPopClientAttrib(), glPushClientAttrib(), glSecondaryColorPointer(),
glTexCoordPointer(), glVertexAttribPointer(), glVertexPointer()
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 03/16/2013 GLINDEXPOINTER(3G)
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