NAME fglArrayElement - render a vertex using the specified vertex array element FORTRAN SPECIFICATION SUBROUTINE fglArrayElement( INTEGER*4 i ) PARAMETERS i Specifies an index into the enabled vertex data arrays. DESCRIPTION fglArrayElement commands are used within fglBegin/fglEnd pairs to specify vertex and attribute data for point, line, and polygon primitives. If GL_VERTEX_ARRAY is enabled when fglArrayElement 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 fglArrayElement 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 fglBegin and the corresponding execution of fglEnd may affect calls to fglArrayElement that are made within the same fglBegin/fglEnd period in non-sequential ways. That is, a call to fglArrayElement 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 fglArrayElement is available only if the GL version is 1.1 or greater. fglArrayElement is included in display lists. If fglArrayElement 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 values affect display lists when the lists are created, not when the lists are executed. SEE ALSO fglColorPointer, fglDrawArrays, fglEdgeFlagPointer, fglGetPointerv, fglIndexPointer, fglInterleavedArrays, fglNormalPointer, fglTexCoordPointer, fglVertexPointer