Application Issues
+ ++This page documents known issues with some OpenGL applications. +
+ + +Topogun
+ ++Topogun for Linux (version 2, at least) +creates a GLX visual without requesting a depth buffer. +This causes bad rendering if the OpenGL driver happens to choose a visual +without a depth buffer. +
+ ++Mesa 9.1.2 and later (will) support a DRI configuration option to work around +this issue. +Using the driconf tool, +set the "Create all visuals with a depth buffer" option before running Topogun. +Then, all GLX visuals will be created with a depth buffer. +
+ + +Old OpenGL games
+ ++Some old OpenGL games (approx. ten years or older) may crash during +start-up because of an extension string buffer-overflow problem. +
+ ++The problem is a modern OpenGL driver will return a very long string +for the glGetString(GL_EXTENSIONS) query and if the application +naively copies the string into a fixed-size buffer it can overflow the +buffer and crash the application. +
+ ++The work-around is to set the MESA_EXTENSION_MAX_YEAR environment variable +to the approximate release year of the game. +This will cause the glGetString(GL_EXTENSIONS) query to only report extensions +older than the given year. +
+ ++For example, if the game was released in 2001, do +
+export MESA_EXTENSION_MAX_YEAR=2001 ++before running the game. + + + + +
Viewperf
+ ++See the Viewperf issues page for a detailed list +of Viewperf issues. +
+ + +