<html> <head> <base href="https://bugs.freedesktop.org/" /> </head> <body> <div> <a class="bz_bug_link bz_status_RESOLVED bz_closed" title="RESOLVED FIXED - Deferred lighting in Second Life causes system hiccups and screen flickering" href="https://bugs.freedesktop.org/show_bug.cgi?id=73528#c41">Comment # 41</a> on <a class="bz_bug_link bz_status_RESOLVED bz_closed" title="RESOLVED FIXED - Deferred lighting in Second Life causes system hiccups and screen flickering" href="https://bugs.freedesktop.org/show_bug.cgi?id=73528">bug 73528</a> from <a class="email" href="mailto:megwattt@gmail.com" title="MWATTT <megwattt@gmail.com>"> MWATTT</a> <pre>I'm able to reproduce the bug (with commit 97ec2c694fe568e375ec7a2b85c1acb1e4666b54 reverted) with a small program after viewing a minecraft apitrace. Apparently, if 2 textures are attached to a fbo (as GL_COLOR_ATTACHMENT0, GL_COLOR_ATTACHMENT1), GL_COLOR_ATTACHMENT1 is cleared and after that glDrawBuffers(2, {GL_COLOR_ATTACHMENT0, GL_COLOR_ATTACHMENT1}) is called, but the shader of the following drawing command doesn't write anything in the second buffer (GL_COLOR_ATTACHMENT1), then it will hang. I've attached a small code which reproduce the hang.</pre> </div> <hr> You are receiving this mail because: <ul> <li>You are the assignee for the bug.</li> </ul> </body> </html>