<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN"> <HTML><HEAD> <META content="text/html; charset=us-ascii" http-equiv=Content-Type> <META name=GENERATOR content="MSHTML 8.00.6001.18975"><LINK rel=stylesheet href="BLOCKQUOTE{margin-Top: 0px; margin-Bottom: 0px; margin-Left: 2em}"></HEAD> <BODY style="MARGIN: 10px; FONT-FAMILY: verdana; FONT-SIZE: 10pt"> <DIV align=left><FONT color=#c0c0c0 size=2 face=Verdana>Hello,everybody!</FONT></DIV> <DIV align=left><FONT color=#c0c0c0></FONT> </DIV> <DIV style="TEXT-INDENT: 2em" align=left>I installed <EM>slackware</EM> 13,which in default with mesa installed.When I compile an opengl program from the redbook,<WBR>the compilation is OK,as I use the command"gcc -lglut hello.c",and this program a.out can execuate.But unfortunately,it only displays a blank window,the content of the window is not right according to the source code,but the background of the desktop.</DIV> <DIV style="TEXT-INDENT: 2em" align=left>Is there anyone who knows the answer,I appreciate your answer!</DIV> <DIV style="TEXT-INDENT: 2em" align=left> </DIV> <DIV style="TEXT-INDENT: 2em" align=left>Best Regards</DIV> <DIV style="TEXT-INDENT: 2em" align=left> </DIV> <DIV align=left><FONT color=#c0c0c0 size=2 face=Verdana>2010-11-08 </FONT></DIV><FONT size=2 face=Verdana> <HR style="WIDTH: 122px; HEIGHT: 2px" align=left SIZE=2> <DIV><FONT color=#c0c0c0 size=2 face=Verdana><SPAN>fyl_hitwh</SPAN> </FONT></DIV></FONT></BODY></HTML>