MirOS Manual: glEdgeFlagPointer(3)


GLEDGEFLAGPOINTER(3G)UNIX Programmer's ManuaGLEDGEFLAGPOINTER(3G)

NAME

     glEdgeFlagPointer - define an array of edge flags

C SPECIFICATION

     void glEdgeFlagPointer( GLsizei stride,
                             const GLvoid *ptr )

PARAMETERS

     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.

DESCRIPTION

     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 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.

NOTES

     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.

MirOS BSD #10-current  Printed 03.04.2017                       1

GLEDGEFLAGPOINTER(3G)UNIX Programmer's ManuaGLEDGEFLAGPOINTER(3G)

     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.

ERRORS

     GL_INVALID_ENUM is generated if stride is negative.

ASSOCIATED GETS

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

SEE ALSO

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

MirOS BSD #10-current  Printed 03.04.2017                       2

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