GLVERTEXPOINTER(3G) UNIX Programmer's Manual GLVERTEXPOINTER(3G)
glVertexPointer - define an array of vertex data
void glVertexPointer( GLint size,
GLenum type,
GLsizei stride,
const GLvoid *ptr )
size Specifies the number of coordinates per vertex; must
be 2, 3, or 4. The initial value is 4.
type Specifies the data type of each coordinate in the
array. Symbolic constants GL_SHORT, GL_INT,
GL_FLOAT, and GL_DOUBLE are accepted. The initial
value is GL_FLOAT.
stride Specifies the byte offset between consecutive ver-
tices. If stride is 0, the vertices are understood
to be tightly packed in the array. The initial value
is 0.
ptr Specifies a pointer to the first coordinate of the
first vertex in the array. The initial value is 0.
glVertexPointer specifies the location and data of an array
of vertex coordinates to use when rendering. size specifies
the number of coordinates per vertex and type the data type
of the coordinates. stride specifies the byte stride from
one vertex to the next allowing vertices and attributes to
be packed into a single array or stored in separate arrays.
(Single-array storage may be more efficient on some imple-
mentations; see glInterleavedArrays.) When a vertex array is
specified, size, type, stride, and ptr are saved as client-
side state.
To enable and disable the vertex array, call
glEnableClientState and
glDisableClientState with the argument GL_VERTEX_ARRAY. If
enabled, the vertex array is used when glDrawArrays,
glDrawElements, or glArrayElement is called.
Use glDrawArrays to construct a sequence of primitives (all
of the same type) from prespecified vertex and vertex attri-
bute arrays. Use glArrayElement to specify primitives by
indexing vertices and vertex attributes and glDrawElements
to construct a sequence of primitives by indexing vertices
and vertex attributes.
MirOS BSD #10-current Printed 20.2.2012 1
GLVERTEXPOINTER(3G) UNIX Programmer's Manual GLVERTEXPOINTER(3G)
glVertexPointer is available only if the GL version is 1.1
or greater.
The vertex array is initially disabled and isn't accessed
when glArrayElement, glDrawElements or glDrawArrays is
called.
Execution of glVertexPointer is not allowed between the exe-
cution 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.
glVertexPointer is typically implemented on the client side.
Vertex array parameters are client-side state and are there-
fore not saved or restored by glPushAttrib and glPopAttrib.
Use glPushClientAttrib and glPopClientAttrib instead.
GL_INVALID_VALUE is generated if size is not 2, 3, or 4.
GL_INVALID_ENUM is generated if type is is not an accepted
value.
GL_INVALID_VALUE is generated if stride is negative.
glIsEnabled with argument GL_VERTEX_ARRAY
glGet with argument GL_VERTEX_ARRAY_SIZE
glGet with argument GL_VERTEX_ARRAY_TYPE
glGet with argument GL_VERTEX_ARRAY_STRIDE
glGetPointerv with argument GL_VERTEX_ARRAY_POINTER
glArrayElement(3G), glColorPointer(3G), glDrawArrays(3G),
glDrawElements(3G), glDrawRangeElements(3G),
glEdgeFlagPointer(3G), glEnable(3G), glGetPointerv(3G),
glIndexPointer(3G), glInterleavedArrays(3G),
glNormalPointer(3G), glPopClientAttrib(3G),
glPushClientAttrib(3G), glTexCoordPointer(3G)
MirOS BSD #10-current Printed 20.2.2012 2
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