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Manual Reference Pages  - GLEDGEFLAGPOINTER (3G)

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glEdgeFlagPointer - define an array of edge flags

CONTENTS

C Specification
Parameters
Description
Notes
Errors
Associated Gets
See Also

void glEdgeFlagPointer( GLsizei stride,

                      const GLvoid *ptr )

stride	Specifies the byte offset between consecutive edge flags. If stride is 0 (the initial value), the edge flags are understood to be tightly packed in the array. The initial value is 0.
ptr	Specifies a pointer to the first edge flag in the array. The initial value is zero.

 glEdgeFlagPointer specifies the location and data of an array of boolean edge flags to use when rendering. stride specifies the byte stride from one edge flag 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 an edge flag array is specified, stride and ptr are saved as client-side state.

To enable and disable the edge flag array, call  glEnableClientState and
 glDisableClientState with the argument  GL_EDGE_FLAG_ARRAY. If enabled, the edge flag 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.

 glEdgeFlagPointer is available only if the GL version is 1.1 or greater.

The edge flag array is initially disabled and it won’t be accessed when
 glArrayElement,  glDrawElements or  glDrawArrays is called.

Execution of  glEdgeFlagPointer 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.

 glEdgeFlagPointer is typically implemented on the client side.

Edge flag array parameters are client-side state and are therefore not saved or restored by  glPushAttrib and  glPopAttrib. Use  glPushClientAttrib and
 glPopClientAttrib instead.

 GL_INVALID_ENUM is generated if stride is negative.

 glIsEnabled with argument  GL_EDGE_FLAG_ARRAY
 glGet with argument  GL_EDGE_FLAG_ARRAY_STRIDE
 glGetPointerv with argument  GL_EDGE_FLAG_ARRAY_POINTER

 glArrayElement(3G),  glColorPointer(3G),  glDrawArrays(3G),  glDrawElements(3G),  glEnable(3G),  glGetPointerv(3G),  glIndexPointer(3G),  glNormalPointer(3G),  glPopClientAttrib(3G),
 glPushClientAttrib(3G),  glTexCoordPointer(3G),  glVertexPointer(3G)

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