This version of mesa provides glx and dri capabilities: it is capable of both direct and indirect rendering. for direct rendering, it can use dri modules from the libgl1-mesa-dri package to accelerate drawing.

this package does not include the opengl library itself, only the dri modules for accelerating direct rendering.

for a complete description of mesa, please look at the libgl1-mesa-glx package.

this package contains debugging symbols for the extra dri modules.