<html> <head> <base href="https://bugs.freedesktop.org/" /> </head> <body> <div> <a class="bz_bug_link bz_status_NEW " title="NEW --- - Metro: Last Light rendering issues" href="https://bugs.freedesktop.org/show_bug.cgi?id=71870#c25">Comment # 25</a> on <a class="bz_bug_link bz_status_NEW " title="NEW --- - Metro: Last Light rendering issues" href="https://bugs.freedesktop.org/show_bug.cgi?id=71870">bug 71870</a> from <a class="email" href="mailto:d.spitznagel@goodbytez.de" title="d.spitznagel@goodbytez.de">d.spitznagel@goodbytez.de</a> <pre>@Andreas: I also checked the trace from Bernd and have discoverd the same problems. The most important hint is in your 2nd line... .....It begins with warnings regarding __,... This is because you mesa developers decided to forbid macro names starting with "__". Please, don't misuderstand me. I don't wanna blame here anybody an you make a great job, but the specs for GLSL say that macro names starting with "__" * or "GL_" are reserved for FUTURE use. During my internet exercise regarding this problem I have found more games having the same "lightning" problems when using mesa...second live, rust (maybe), ... So since GLSL doesn't FORBID macro names with "__" there should be some kind of check against it. For example: If games run with GLSL 1.50 allow double underscores but disallow with GLSL X.X where double underscores are really DISALLOWED by specs. Maybe there is a smarter way, I don't know, this is up to you. For now I solved this by removing the check from src/glsl/glcpp/glcpp-parse.c. Compiled mesa after that, and voila Metro LL has no lightning problems anymore (look at my attachment). <<<< if (strstr(identifier, "__")) { glcpp_error (loc, parser, "Macro names containing \"__\" are reserved.\n"); } >>>> Would be great if you find a solution for this, so I don't need to remove this on every new mesa release I wanna use to play Metro LL. Beside this... Thanks to Xonar (a steam user) who showed me a path to solve this problem for me through the steam community.</pre> </div> <hr> You are receiving this mail because: <ul> <li>You are the QA Contact for the bug.</li> </ul> </body> </html>