GLINTERLEAVEDARRAYSMachTen Programmer’s ManuGLINTERLEAVEDARRAYS()

NAME
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 aggre-
gate 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 seperately.

If stride is 0, the aggregate elements are stored consecu-
tively. Otherwise, stride bytes occur between the begin-
ning 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.

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, glColorPointer, glDrawArrays, glDrawEle-
ments, glEdgeFlagPointer, glEnableClientState, glGet-
Pointer, glIndexPointer, glNormalPointer, glTexCoord-
Pointer, glVertexPointer

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