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third_party_mesa3d/docs/debugging.html
Erik Faye-Lund ecdab0dfea docs: drop h1 in header
It's generally frowned upon to have more than one H1 per document in
HTML4. So let's put the text directly inside the header. This means we
can drop the flex-based centering, which makes things a bit easier. We
also need to change the padding to rem instead of em, because the em has
now changed.

Signed-off-by: Erik Faye-Lund <erik.faye-lund@collabora.com>
Reviewed-by: Eric Engestrom <eric.engestrom@intel.com>
2019-05-08 07:18:15 +00:00

44 lines
1.1 KiB
HTML

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html lang="en">
<head>
<meta http-equiv="content-type" content="text/html; charset=utf-8">
<title>Debugging Tips</title>
<link rel="stylesheet" type="text/css" href="mesa.css">
</head>
<body>
<div class="header">
The Mesa 3D Graphics Library
</div>
<iframe src="contents.html"></iframe>
<div class="content">
<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 in DEBUG builds
(<code>--buildtype debug</code> for meson, <code>build=debug</code> for scons).
</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>
</div>
</body>
</html>