Documentation/website overhaul. The website content and doc/ directory
are now merged and are one and the same.
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+<HTML>
+
+<TITLE>Debugging Tips</TITLE>
+
+<BODY text="#000000" bgcolor="#55bbff" link="#111188">
+
+<H1>Debugging Tips</H1>
+
+<p>
+ Normally Mesa (and OpenGL) records but does not notify the user of
+ errors. It is up to the application to call
+ <code>glGetError</code> to check for errors. Mesa supports an
+ environment variable, MESA_DEBUG, to help with debugging. If
+ MESA_DEBUG is defined, a message will be printed to stdout whenever
+ an error occurs.
+</p>
+
+<p>
+ More extensive error checking is done when Mesa is compiled with the
+ DEBUG symbol defined. You'll have to edit the Make-config file and
+ add -DDEBUG to the CFLAGS line for your system configuration. You may
+ also want to replace any optimization flags with the -g flag so you can
+ use your debugger. After you've edited Make-config type 'make clean'
+ before recompiling.
+</p>
+<p>
+ In your debugger you can set a breakpoint in _mesa_error() to trap Mesa
+ errors.
+</p>
+<p>
+ There is a display list printing/debugging facility. See the end of
+ src/dlist.c for details.
+</p>
+
+</BODY>
+</HTML>