glindexpointer(3g) [redhat man page]

GLINDEXPOINTER(3G)														GLINDEXPOINTER(3G)

NAME

       glIndexPointer - define an array of color indexes

C SPECIFICATION

       void glIndexPointer( GLenum type,
			    GLsizei stride,
			    const GLvoid *ptr )

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 initial value), the color indexes are	understood
	       to be tightly packed in the array.  The initial value is 0.

       ptr     Specifies a pointer to the first index in the array.  The initial value is 0.

DESCRIPTION

       glIndexPointer  specifies  the location and data  of an array of color indexes to use when rendering.  type specifies the data type of each
       color index and stride gives 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.  (Single-array storage may be more efficient on some implementations; see glInterleavedArrays.)

       type, stride, and ptr are saved as client-side state.

       The  color  index  array is initially disabled. To enable and disable the array, call glEnableClientState and glDisableClientState with the
       argument GL_INDEX_ARRAY. If enabled, the color index array is used when glDrawArrays, glDrawElements or glArrayElement is called.

       Use glDrawArrays to construct a sequence of primitives (all of the same type) from prespecified vertex and vertex  attribute  arrays.   Use
       glArrayElement to specify primitives by indexing vertices and vertex attributes and glDrawElements to construct a sequence of primitives by
       indexing vertices and vertex attributes.

NOTES

       glIndexPointer is available only if the GL version is 1.1 or greater.

       The color index array is initially disabled, and it isn't accessed when glArrayElement, glDrawElements, or glDrawArrays 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.

       Since  the  color  index  array	parameters  are  client-side  state,  they are 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
       glGetPointerv with argument GL_INDEX_ARRAY_POINTER

SEE ALSO

       glArrayElement(3G),  glColorPointer(3G),  glDrawArrays(3G),  glDrawElements(3G),  glEdgeFlagPointer(3G),  glEnable(3G),	glGetPointerv(3G),
       glInterleavedArrays(3G), glNormalPointer(3G), glPopClientAttrib(3G), glPushClientAttrib(3G), glTexCoordPointer(3G), glVertexPointer(3G)

																GLINDEXPOINTER(3G)

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 (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							GLINDEXPOINTER(3G)