1991-2006 Silicon Graphics, Inc.

glInterleavedArrays

3G

glInterleavedArrays

simultaneously specify and enable several interleaved arrays

# C Specification

                    void glInterleavedArrays
                    GLenum format
                    GLsizei stride
                    const GLvoid * pointer

## Parameters

`format`

- Specifies the type of array to enable. Symbolic constants `GL_V2F`, `GL_V3F`, `GL_C4UB_V2F`, `GL_C4UB_V3F`, `GL_C3F_V3F`, `GL_N3F_V3F`, `GL_C4F_N3F_V3F`, `GL_T2F_V3F`, `GL_T4F_V4F`, `GL_T2F_C4UB_V3F`, `GL_T2F_C3F_V3F`, `GL_T2F_N3F_V3F`, `GL_T2F_C4F_N3F_V3F`, and `GL_T4F_C4F_N3F_V4F` are accepted.

`stride`

- Specifies the offset in bytes between each aggregate array element.

## Description

`glInterleavedArrays` lets you specify and enable individual color, normal, texture and vertex arrays whose elements are part of a larger aggregate array element. For some implementations, this is more efficient than specifying the arrays separately.

If `stride` is 0, the aggregate elements are stored consecutively. Otherwise, `stride` bytes occur between the beginning of one aggregate array element and the beginning of the next aggregate array element.

`format` serves as a ``key'' describing the extraction of individual arrays from the aggregate array. If `format` contains a T, then texture coordinates are extracted from the interleaved array. If C is present, color values are extracted. If N is present, normal coordinates are extracted. Vertex coordinates are always extracted.

The digits 2, 3, and 4 denote how many values are extracted. F indicates that values are extracted as floating-point values. Colors may also be extracted as 4 unsigned bytes if 4UB follows the C. If a color is extracted as 4 unsigned bytes, the vertex array element which follows is located at the first possible floating-point aligned address.

## Notes

`glInterleavedArrays` is available only if the GL version is 1.1 or greater.

If `glInterleavedArrays` is called while compiling a display list, it is not compiled into the list, and it is executed immediately.

Execution of `glInterleavedArrays` is not allowed between the execution of

glBegin

and the corresponding execution of

glEnd

, but an error may or may not be generated. If no error is generated, the operation is undefined.

`glInterleavedArrays` is typically implemented on the client side.

Vertex array parameters are client-side state and are therefore not saved or restored by

glPushAttrib

and

glPopAttrib

. Use

glPushClientAttrib

and

glPopClientAttrib

instead.

For OpenGL versions 1.3 and greater, or when the `ARB_multitexture` extension is supported, `glInterleavedArrays` only updates the texture coordinate array for the client active texture unit. The texture coordinate state for other client texture units is not updated, regardless of whether the client texture unit is enabled or not.

Secondary color values are not supported in interleaved vertex array formats.

## Errors

`GL_INVALID_ENUM` is generated if `format` is not an accepted value.

`GL_INVALID_VALUE` is generated if `stride` is negative.

## See Also

glArrayElement

,

glClientActiveTexture

,

glColorPointer

,

glDrawArrays

,

glDrawElements

,

glEdgeFlagPointer

,

glEnableClientState

,

glGetPointerv

,

glIndexPointer

,

glNormalPointer

,

glSecondaryColorPointer

,

glTexCoordPointer

,

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/.