x SuSE Linux 13.1-RELEASE x
x SuSE Linux 13.1-RELEASEx
GLVERTEXPOINTER(3G) GLVERTEXPOINTER(3G)
NAME
glVertexPointer - define an array of vertex data
C SPECIFICATION
void glVertexPointer( GLint size,
GLenum type,
GLsizei stride,
const GLvoid *ptr )
PARAMETERS
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. Sym-
bolic 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 vertices. 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.
DESCRIPTION
glVertexPointer specifies the location and data of an array of vertex
coordinates to use when rendering. size specifies the number of coor-
dinates 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 implemen-
tations; 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 attribute 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.
NOTES
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 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 unde-
fined.
glVertexPointer 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_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.
ASSOCIATED GETS
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
SEE ALSO
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)
GLVERTEXPOINTER(3G)
Want to link to this manual page? Use this URL:
<http://star2.abcm.com/cgi-bin/bsdi-man?query=glVertexPointer&sektion=3g&manpath=>