<html>
<head>
<base href="https://bugs.freedesktop.org/" />
</head>
<body><span class="vcard"><a class="email" href="mailto:maraeo@gmail.com" title="Marek Olšák <maraeo@gmail.com>"> <span class="fn">Marek Olšák</span></a>
</span> changed
<a class="bz_bug_link
bz_status_RESOLVED bz_closed"
title="RESOLVED NOTABUG - [REGRESSION] "st/mesa: drop the lowering of quad strips to triangle strips""
href="https://bugs.freedesktop.org/show_bug.cgi?id=79016">bug 79016</a>
<br>
<table border="1" cellspacing="0" cellpadding="8">
<tr>
<th>What</th>
<th>Removed</th>
<th>Added</th>
</tr>
<tr>
<td style="text-align:right;">Status</td>
<td>NEW
</td>
<td>RESOLVED
</td>
</tr>
<tr>
<td style="text-align:right;">Resolution</td>
<td>---
</td>
<td>NOTABUG
</td>
</tr></table>
<p>
<div>
<b><a class="bz_bug_link
bz_status_RESOLVED bz_closed"
title="RESOLVED NOTABUG - [REGRESSION] "st/mesa: drop the lowering of quad strips to triangle strips""
href="https://bugs.freedesktop.org/show_bug.cgi?id=79016#c7">Comment # 7</a>
on <a class="bz_bug_link
bz_status_RESOLVED bz_closed"
title="RESOLVED NOTABUG - [REGRESSION] "st/mesa: drop the lowering of quad strips to triangle strips""
href="https://bugs.freedesktop.org/show_bug.cgi?id=79016">bug 79016</a>
from <span class="vcard"><a class="email" href="mailto:maraeo@gmail.com" title="Marek Olšák <maraeo@gmail.com>"> <span class="fn">Marek Olšák</span></a>
</span></b>
<pre>"warn" is not a failure, like I said. I knew about this pass->warn change. It
actually uncovers a potential issue with the hardware - or with the test. It
depends on how you look at it.
>From the test:
* Note: some OpenGL implementations do not pass the "flat_first" and
* "flat_last" tests when rendering quads or polygons. That is, they
* produce a tessellation which contains the correct vertices, but not
* in the order required to preserve flat shaded colors. This is
* unlikely to cause problems for client programs, since client
* programs that use new features like transform feedback are unlikely
* to also use deprecated features like quads and polygons. Also, it
* is a matter of interpretation whether these tests are expected to
* pass at all--after all, the spec does say that "the order of
* tessellation within a primitive is undefined". Accordingly, these
* failures, should they occur, are flagged as warnings rather than
* failures.
However, my Mesa commit which causes this test not to pass on nouveau, radeon,
and probably other gallium drivers, and I did know about this, actually fixes
real issues with flat shading and primitive restart and therefore cannot be
reverted.</pre>
</div>
</p>
<hr>
<span>You are receiving this mail because:</span>
<ul>
<li>You are the assignee for the bug.</li>
</ul>
</body>
</html>