Workaround for my old problem under linux with DRI and radeon 7500

[Guest santamaart]

I was having display problems from the introduction of the new client. 3D objects where displayed partially. No flags on the ships, weird looking trees, stripped rocks, etc... Animals, players and monsters where displayed correctly.

 

Then I tested a radeon 9250 with ATI propietary drivers and the game worked fine, but the system crashes on Xserver exit. Furthermore, ATI propietary drivers don't work at all with the current version of Xorg server, so I tested again the 7500 with opensource drivers. Same display problems, until I disabled the use of GL_EXT_compiled_vertex_array by forcing

 

have_compiled_vertex_array=-1;

after the line:

have_compiled_vertex_array=get_string_occurance("GL_EXT_compiled_vertex_array",extensions,ext_str_len,0);

 

I don't know anything about GL programming, and writing a coherent text in english is a pain for me. But I can test suggestions, and even learn something about GL to track the issue and help in the resolution.