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glInterleavedArrays(3G)
NAME
glInterleavedArrays - simultaneously specify and enable several interleaved
arrays
SYNOPSIS
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.
When the GL_ARB_multitexture extension is supported, glInterleavedArrays()
only updates the texture coordinate array for the active active texture
unit. The texture coordinate state for other client texture units is not
update, regardless if they are enabled or not.
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(3), glClientActiveTextureARB(3), glColorPointer(3),
glDrawArrays(3), glDrawElements(3), glEdgeFlagPointer(3),
glEnableClientState(3), glGetPointer(3), glIndexPointer(3),
glNormalPointer(3), glTexCoordPointer(3), glVertexPointer(3)
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Index for Section 3G |
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