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 empty.
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 imple‐
mentation. 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 execu‐
tion 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
ASSOCIATED GETSglGet() with argument GL_NAME_STACK_DEPTH
glGet() with argument GL_MAX_NAME_STACK_DEPTH
SEE ALSOglInitNames(3), glLoadName(3), glRenderMode(3), glSelectBuffer(3)glPopName(3G)