glPopName, glPushName - push and pop the name stack
Specifies a name that will be pushed onto the name stack.
The name stack is used during selection mode to allow sets
of rendering commands to be uniquely identified. It consists
of an ordered set of unsigned integers and is initially
glPushName() causes name to be pushed onto the name stack.
glPopName() pops one name off the top of the stack.
The maximum name stack depth is implementation-dependent;
call GL_MAX_NAME_STACK_DEPTH to find out the value for a
particular implementation. It is an error to push a name
onto a full stack, or to pop a name off an empty stack. It
is also an error to manipulate the name stack between the
execution of glBegin() and the corresponding execution of
glEnd(). In any of these cases, the error option is set
and no other change is made to GL state.
The name stack is always empty while the render mode is
not GL_SELECT. Calls to glPushName() or glPopName() while
the render mode is not GL_SELECT are ignored.
GL_STACK_OVERFLOW is generated if glPushName() is called
while the name stack is full.
GL_STACK_UNDERFLOW is generated if glPopName() is called
while the name stack is empty.
GL_INVALID_OPERATION is generated if glPushName() or
glPopName() is executed between a call to glBegin() and
the corresponding call to glEnd().
glGet() with argument GL_NAME_STACK_DEPTH
glGet() with argument GL_MAX_NAME_STACK_DEPTH
glInitNames(3), glLoadName(3), glRenderMode(3), glSelectBuffer(3)
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