<html> <head> <base href="https://bugs.freedesktop.org/"> </head> <body> <div> <a class="bz_bug_link bz_status_NEW " title="NEW - kwin_x11 disabling compositing with mesa 17" href="https://bugs.freedesktop.org/show_bug.cgi?id=99604#c5">Comment # 5</a> on <a class="bz_bug_link bz_status_NEW " title="NEW - kwin_x11 disabling compositing with mesa 17" href="https://bugs.freedesktop.org/show_bug.cgi?id=99604">bug 99604</a> from <a class="email" href="mailto:kenneth@whitecape.org" title="Kenneth Graunke <kenneth@whitecape.org>"> Kenneth Graunke</a> <pre>This makes no sense to me. The requirement for #version being at the top has existed for years. We changed our handling of #version slightly, but it should not have affected this. It could be that KWin changed their shaders...but that also seems unlikely. It's a pretty catastrophic failure, and I've been using KWin every day and I've never hit this issue. Admittedly, I usually use OpenGL 3.1 mode, not GL 2.0 (in settings -> display -> compositor). I just tried both with KWin 5.9.2 and they both seem to work fine. Maybe we have different plugins/effects enabled? If your Mesa is built with debugging symbols, you can obtain the broken shader by doing: <ssh in - don't do this from X> $ DISPLAY=:0 gdb --args kwin_x11 --replace (gdb) break glcpp_error (gdb) run Breakpoint 1, glcpp_error (locp=0x7fffffffc228, parser=0x77cc40, (gdb) up #1 0x00007ffff10e1251 in glcpp_parser_parse (parser=0x77cc40) (gdb) up #2 0x00007ffff1220036 in glcpp_preprocess (ralloc_ctx=0x77af90, (gdb) printf "%s", *shader</pre> </div> <hr> You are receiving this mail because: <ul> <li>You are the QA Contact for the bug.</li> <li>You are the assignee for the bug.</li> </ul> </body> </html>