<HTML>
<BODY>
<PRE>
<STRONG>NAME</STRONG>
<STRONG>glPushName,</STRONG> <STRONG>glPopName</STRONG> - push and pop the name stack
<STRONG>C</STRONG> <STRONG>SPECIFICATION</STRONG>
void <STRONG>glPushName</STRONG>( GLuint <EM>name</EM> )
<STRONG>PARAMETERS</STRONG>
<EM>name</EM> Specifies a name that will be pushed onto the name
stack.
<STRONG>C</STRONG> <STRONG>SPECIFICATION</STRONG>
void <STRONG>glPopName</STRONG>( void )
<STRONG>DESCRIPTION</STRONG>
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.
<STRONG>glPushName</STRONG> causes <EM>name</EM> to be pushed onto the name stack.
<STRONG>glPopName</STRONG> pops one name off the top of the stack.
The maximum name stack depth is implementation-dependent;
call <STRONG>GL_MAX_NAME_STACK_DEPTH</STRONG> 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 <STRONG>glBegin</STRONG> and the corresponding execution of
<STRONG>glEnd</STRONG>. In any of these cases, the error flag is set and no
other change is made to GL state.
The name stack is always empty while the render mode is not
<STRONG>GL_SELECT</STRONG>. Calls to <STRONG>glPushName</STRONG> or <STRONG>glPopName</STRONG> while the
render mode is not <STRONG>GL_SELECT</STRONG> are ignored.
<STRONG>ERRORS</STRONG>
<STRONG>GL_STACK_OVERFLOW</STRONG> is generated if <STRONG>glPushName</STRONG> is called while
the name stack is full.
<STRONG>GL_STACK_UNDERFLOW</STRONG> is generated if <STRONG>glPopName</STRONG> is called while
the name stack is empty.
<STRONG>GL_INVALID_OPERATION</STRONG> is generated if <STRONG>glPushName</STRONG> or <STRONG>glPopName</STRONG>
is executed between a call to <STRONG>glBegin</STRONG> and the corresponding
call to <STRONG>glEnd</STRONG>.
<STRONG>ASSOCIATED</STRONG> <STRONG>GETS</STRONG>
<STRONG>glGet</STRONG> with argument <STRONG>GL_NAME_STACK_DEPTH</STRONG>
<STRONG>glGet</STRONG> with argument <STRONG>GL_MAX_NAME_STACK_DEPTH</STRONG>
<STRONG>SEE</STRONG> <STRONG>ALSO</STRONG>
<STRONG>glInitNames</STRONG>, <STRONG>glLoadName</STRONG>, <STRONG>glRenderMode</STRONG>, <STRONG>glSelectBuffer</STRONG>
</PRE>
</BODY>
</HTML>
