<html>
<head>
<base href="https://bugs.freedesktop.org/" />
</head>
<body>
<p>
<div>
<b><a class="bz_bug_link
bz_status_NEW "
title="NEW --- - PBO glDrawPixels fails with MSAA"
href="https://bugs.freedesktop.org/show_bug.cgi?id=77412#c3">Comment # 3</a>
on <a class="bz_bug_link
bz_status_NEW "
title="NEW --- - PBO glDrawPixels fails with MSAA"
href="https://bugs.freedesktop.org/show_bug.cgi?id=77412">bug 77412</a>
from <span class="vcard"><a class="email" href="mailto:amonakov@gmail.com" title="Alexander Monakov <amonakov@gmail.com>"> <span class="fn">Alexander Monakov</span></a>
</span></b>
<pre>On what hardware did you get just 20%? I'm getting about 3x overall speedup on
IvyBridge (roughly 10s -> 3s run time), plus 10% faster if I change GL_BGRA to
GL_RGBA in the testcase source, otherwise it performs channel swizzle for
temporary texture.
As I understand to make Meta viable for this you'd need to be able to interpret
PBO (linear) as a texture (normally tiled) without intermediate copying. From
what I know, such capability existed in Mesa some time ago but not anymore.</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>