GLPUSHCLIENTATTRIB(MachTen Programmer’s ManuaGLPUSHCLIENTATTRIB()

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 indi-
cates 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 implemen-
tation, 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 glPush-
ClientAttrib and glPopClientAttrib.

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, glDisableClientState, glEdgeFlagPointer,
glEnableClientState, glGet, glGetError, glIndexPointer,
glNormalPointer, glNewList, glPixelStore, glPushAttrib,
glTexCoordPointer, glVertexPointer

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