Variable names within array call Post: 302278168

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glarrayelement

GLARRAYELEMENT(3G)														GLARRAYELEMENT(3G)

NAME

       glArrayElement - render a vertex using the specified vertex array element

C SPECIFICATION

       void glArrayElement( GLint i )

PARAMETERS

       i  Specifies an index into the enabled vertex data arrays.

DESCRIPTION

       glArrayElement  commands  are used within glBegin/glEnd pairs to specify vertex and attribute data for point, line, and polygon primitives.
       If GL_VERTEX_ARRAY is enabled when glArrayElement is called, a single vertex is drawn, using vertex and attribute data taken from  location
       i  of  the  enabled arrays. If GL_VERTEX_ARRAY is not enabled, no drawing occurs but the attributes corresponding to the enabled arrays are
       modified.

       Use glArrayElement to construct primitives by indexing vertex data, rather than by streaming through arrays of data in first-to-last order.
       Because each call specifies only a single vertex, it is possible to explicitly specify per-primitive attributes such as a single normal per
       individual triangle.

       Changes made to array data between the execution of glBegin and the corresponding execution of glEnd may  affect  calls	to  glArrayElement
       that are made within the same glBegin/glEnd period in non-sequential ways.  That is, a call to
       glArrayElement  that precedes a change to array data may access the changed data, and a call that follows a change to array data may access
       original data.

NOTES

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

       glArrayElement is included in display lists. If glArrayElement is entered into a display list, the necessary array data (determined by  the
       array pointers and enables) is also entered into the display list. Because the array pointers and enables are client-side state, their val-
       ues affect display lists when the lists are created, not when the lists are executed.

SEE ALSO

       glClientActiveTextureARB(3G),   glColorPointer(3G),   glDrawArrays(3G),	 glEdgeFlagPointer(3G),   glGetPointerv(3G),   glIndexPointer(3G),
       glInterleavedArrays(3G), glNormalPointer(3G), glTexCoordPointer(3G), glVertexPointer(3G)

																GLARRAYELEMENT(3G)