From: Brian Paul
+Some applications won't run with indirect rendering contexts (which is +what the Xlib driver supports). +To force the glXIsDirect() query to return True, set the MESA_GLX_FORCE_DIRECT +environment variable. +For example: +
++ $ export MESA_GLX_FORCE_DIRECT=1 ++ + +
Hardware overlay planes are supported by the Xlib driver. To @@ -268,6 +282,8 @@ This extension was added in Mesa 2.6 MESA_BACK_BUFFER - specifies how to implement the back color buffer (X only) MESA_PRIVATE_CMAP - force aux/tk libraries to use private colormaps (X only) MESA_GAMMA - gamma correction coefficients (X only) + MESA_GLX_FORCE_DIRECT - report that the driver is direct rendering, even + though it's not.