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<body><span class="vcard"><a class="email" href="mailto:amonakov@gmail.com" title="Alexander Monakov <amonakov@gmail.com>"> <span class="fn">Alexander Monakov</span></a>
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<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>
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<td>kenneth@whitecape.org
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<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#c1">Comment # 1</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 master this is "fixed" by:
commit 73c78c514f8db0605c0deb85382003d0f66b5525
Author: Kenneth Graunke <<a href="mailto:kenneth@whitecape.org">kenneth@whitecape.org</a>>
Date: Fri Feb 21 19:15:51 2014 -0800
i965: Don't try to use the hardware blitter for multisampled miptrees.
Interestingly, 10.1 has this commit that "fixes" MSAA CopyPixels:
commit f416a15096c0984dce689681a004554ecb2ea728
Author: Paul Berry <<a href="mailto:stereotype441@gmail.com">stereotype441@gmail.com</a>>
Date: Tue Dec 3 15:41:14 2013 -0800
i965: Don't try to use HW blitter for glCopyPixels() when multisampled.
So,
1. Code duplication between intel_pixel* is quite unfortunate; I'm guilty for
increasing duplication a bit but it wasn't well-factored before me as well;
2. The first commit mentions that blorp would handle msaa; I see that blorp is
used for FBO blits, but apparently not in intel_pixel_*; any reason for that?
3. Even without blorp, I find it quite strange that meta fallback would be that
slow and go through float pack-unpack (even in non-msaa case).
Comments appreciated :)</pre>
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