<html> <head> <base href="https://bugs.freedesktop.org/" /> </head> <body><span class="vcard"><a class="email" href="mailto:lemody@gmail.com" title="Tapani PÃ¤lli <lemody@gmail.com>"> <span class="fn">Tapani PÃ¤lli</span></a> </span> changed <a class="bz_bug_link bz_status_NEW " title="NEW --- - Linking fails when not writing gl_Position." href="https://bugs.freedesktop.org/show_bug.cgi?id=83380">bug 83380</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;">Assignee</td> <td>idr@freedesktop.org </td> <td>lemody@gmail.com </td> </tr></table> <p> <div> <b><a class="bz_bug_link bz_status_NEW " title="NEW --- - Linking fails when not writing gl_Position." href="https://bugs.freedesktop.org/show_bug.cgi?id=83380#c1">Comment # 1</a> on <a class="bz_bug_link bz_status_NEW " title="NEW --- - Linking fails when not writing gl_Position." href="https://bugs.freedesktop.org/show_bug.cgi?id=83380">bug 83380</a> from <span class="vcard"><a class="email" href="mailto:lemody@gmail.com" title="Tapani PÃ¤lli <lemody@gmail.com>"> <span class="fn">Tapani PÃ¤lli</span></a> </span></b> <pre>Because test does not specify GLSL version, I believe lowest possible one is used and that is why the error condition gets hit, currently test could pass if it specified #version 140 at the beginning. But it looks like Mesa is indeed too strict here, GLSL specification 1.10 states: "Compilers may generate a diagnostic message if they detect gl_Position is not written, or read before being written, but not all such cases are detectable. Results are undefined if a vertex shader is executed and does not write gl_Position." So for me it looks like Kalyan's fix is proper, I can send your patch to the list with a change to the comment section as well.</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>