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GLPUSHCLIENTATTRIB(3G)                                                                GLPUSHCLIENTATTRIB(3G)



NAME
       glPushClientAttrib, glPopClientAttrib - push and pop the client attribute stack


C SPECIFICATION
       void glPushClientAttrib( GLbitfield mask )


PARAMETERS
       mask  Specifies a mask that indicates which attributes to save.  Values for mask are listed below.

C SPECIFICATION
       void glPopClientAttrib( void )


DESCRIPTION
       glPushClientAttrib  takes  one argument, a mask that indicates which groups of client-state variables
       to save on the client attribute stack.  Symbolic constants are used to set bits in the mask.  mask is
       typically   constructed   by   OR'ing   several  of  these  constants  together.   The  special  mask
       GL_CLIENT_ALL_ATTRIB_BITS can be used to save all stackable client state.

       The symbolic mask constants and their associated GL client state are as follows  (the  second  column
       lists which attributes are saved):

       GL_CLIENT_PIXEL_STORE_BIT     Pixel storage modes
       GL_CLIENT_VERTEX_ARRAY_BIT    Vertex arrays (and enables)

       glPopClientAttrib   restores   the   values  of  the  client-state  variables  saved  with  the  last
       glPushClientAttrib.  Those not saved are left unchanged.

       It is an error to push attributes onto a full client attribute stack, or to  pop  attributes  off  an
       empty stack.  In either case, the error flag is set, and no other change is made to GL state.

       Initially, the client attribute stack is empty.

NOTES
       glPushClientAttrib is available only if the GL version is 1.1 or greater.

       Not  all  values  for  GL  client state can be saved on the attribute stack.  For example, select and
       feedback state cannot be saved.

       The depth of the attribute stack depends on the implementation, but it must be at least 16.

       Use glPushAttrib and glPopAttrib to push and restore state which is kept on the  server.  Only  pixel
       storage  modes  and  vertex  array  state  may  be  pushed  and  popped  with  glPushClientAttrib and
       glPopClientAttrib.

       When the GL_ARB_multitexture extension is supported, pushing and popping client  vertex  array  state
       apples to all supported texture units, and the active client texture state.

ERRORS
       GL_STACK_OVERFLOW is generated if glPushClientAttrib is called while the attribute stack is full.

       GL_STACK_UNDERFLOW is generated if glPopClientAttrib is called while the attribute stack is empty.

ASSOCIATED GETS
       glGet with argument GL_ATTRIB_STACK_DEPTH
       glGet with argument GL_MAX_CLIENT_ATTRIB_STACK_DEPTH

SEE ALSO
       glColorPointer(3G),  glDisableClientState(3G),  glEdgeFlagPointer(3G),  glEnableClientState(3G),  glGet(3G),  glGetError(3G),
       glIndexPointer(3G),   glNormalPointer(3G),   glNewList(3G),   glPixelStore(3G),   glPushAttrib(3G),    glTexCoordPointer(3G),
       glVertexPointer(3G)




                                                                                      GLPUSHCLIENTATTRIB(3G)