mirror of
https://gitlab.freedesktop.org/mesa/mesa.git
synced 2024-12-14 12:44:04 +08:00
37 lines
1.1 KiB
HTML
37 lines
1.1 KiB
HTML
<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>
|