To Next Page

To Previous Page

glInterleavedArrays

Chapter 9

236

glInterleavedArrays

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 four unsigned bytes if

4UB follows the C. If a color is extracted as four 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.

HP b2600 Reference Guide

Other manuals for HP b2600