<html>
<head>
<base href="https://bugs.freedesktop.org/">
</head>
<body>
<p>
<div>
<b><a class="bz_bug_link
bz_status_NEW "
title="NEW - glCopyTexSubImage2D is much slower than glDrawArrays"
href="https://bugs.freedesktop.org/show_bug.cgi?id=98478#c3">Comment # 3</a>
on <a class="bz_bug_link
bz_status_NEW "
title="NEW - glCopyTexSubImage2D is much slower than glDrawArrays"
href="https://bugs.freedesktop.org/show_bug.cgi?id=98478">bug 98478</a>
from <span class="vcard"><a class="email" href="mailto:kenneth@whitecape.org" title="Kenneth Graunke <kenneth@whitecape.org>"> <span class="fn">Kenneth Graunke</span></a>
</span></b>
<pre>The next step would be to determine what method i965 is using for
CopyTexSubImage:
1. BLORP (should be fast)
2. BLT (should be slow)
3. CPU maps (should be slow)
Putting a breakpoint in intelCopyTexSubImage and stepping through it should
make it pretty clear which is happening, and if we're falling off the fast
path, why.</pre>
</div>
</p>
<hr>
<span>You are receiving this mail because:</span>
<ul>
<li>You are the QA Contact for the bug.</li>
</ul>
</body>
</html>