https://bugs.winehq.org/show_bug.cgi?id=48613 --- Comment #3 from wentam42(a)gmail.com --- Spent a lot of time with a disassembler and debugger, found the problem, and found a workaround. Ignore my comments about glDrawElements. That's all good. Zwift calls wglGetProcAddress("glActiveTextureARB") and gets NULL even though the GL_ARB_multitexture extension should be available according to glxinfo. WINEDEBUG="+wgl" also gives "926:0138:warn:wgl:wglGetProcAddress Extension GL_ARB_multitexture required for glActiveTextureARB not supported". Later on, Zwift tries to call the NULL pointer and the game crashes. I don't know why wine isn't giving it a pointer. However,setting the MESA_GL_VERSION_OVERRIDE environment variable to "3.1" allows the game to grab a pointer and the game to run. So, the workaround: * wineserver -k - to make sure we fully reset * export MESA_GL_VERSION_OVERRIDE=3.1 Run the export command in any terminal windows that you will be running wine commands in. -- Do not reply to this email, post in Bugzilla using the above URL to reply. You are receiving this mail because: You are watching all bug changes.