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10 <h1>Debugging Tips
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13 Normally Mesa (and OpenGL) records but does not notify the user of
14 errors. It is up to the application to call
15 <code>glGetError
</code> to check for errors. Mesa supports an
16 environment variable, MESA_DEBUG, to help with debugging. If
17 MESA_DEBUG is defined, a message will be printed to stdout whenever
22 More extensive error checking is done when Mesa is compiled with the
23 DEBUG symbol defined. You'll have to edit the Make-config file and
24 add -DDEBUG to the CFLAGS line for your system configuration. You may
25 also want to replace any optimization flags with the -g flag so you can
26 use your debugger. After you've edited Make-config type 'make clean'
30 In your debugger you can set a breakpoint in _mesa_error() to trap Mesa
34 There is a display list printing/debugging facility. See the end of
35 src/dlist.c for details.