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Manual Reference Pages  - GLVERTEXPOINTER (3G)

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glVertexPointer - define an array of vertex data

CONTENTS

C Specification
Parameters
Description
Notes
Errors
Associated Gets
See Also

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 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.

 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 implementations; 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.

 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 undefined.

 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.

 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)

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