<html> <head> <base href="https://bugs.freedesktop.org/" /> </head> <body> <div> <a class="bz_bug_link bz_status_RESOLVED bz_closed" title="RESOLVED NOTOURBUG - render error when run glsl demo or mesa demo with X" href="https://bugs.freedesktop.org/show_bug.cgi?id=46376#c8">Comment # 8</a> on <a class="bz_bug_link bz_status_RESOLVED bz_closed" title="RESOLVED NOTOURBUG - render error when run glsl demo or mesa demo with X" href="https://bugs.freedesktop.org/show_bug.cgi?id=46376">bug 46376</a> from <a class="email" href="mailto:brianp@vmware.com" title="Brian Paul <brianp@vmware.com>"> Brian Paul</a> <pre>(In reply to <a href="show_bug.cgi?id=46376#c7">comment #7</a>) > I managed to bisect this down to: > > commit 9a7f84d6b28e180ef79349b36de9a5d58a1e2dc9 > Author: José Fonseca <<a href="mailto:jfonseca@vmware.com">jfonseca@vmware.com</a>> > Date: Thu Jul 14 17:28:52 2011 +0100 > > Squashed commit of the following: > ... > > which is the commit that removed Mark Kilgard's GLUT from the Mesa tree. > After that, building Mesa no longer built libglut. This meant that the > demos started running with your distro-provided libglut, which is typically > freeglut (not Kilgard's GLUT). > > With freeglut and no window manager, the Mesa demos never get their > Reshape() function called, so their initial frustum and such never get set. > (Kilgard's GLUT did cause Reshape() to get called.) However, I don't > believe this is a bug; I believe freeglut's behavior is valid. > > I've filed #61640 against Mesa demos; they should probably be enhanced to > set up their initial state and not rely on Reshape() getting automatically > called. This is just generally a good idea. I believe this is a freeglut bug. Kilgard's GLUT came first and the behaviour of window reshaping is documented here: <a href="http://www.opengl.org/resources/libraries/glut/spec3/node48.html#SECTION00083000000000000000">http://www.opengl.org/resources/libraries/glut/spec3/node48.html#SECTION00083000000000000000</a> according to that, the reshape function should always get called at least once when the window first appears.</pre> </div> <hr> You are receiving this mail because: <ul> <li>You are the assignee for the bug.</li> </ul> </body> </html>