qdii wrote: > vitamin : I'm not sure what you mean with "you can't". My idea was that Wine was "reading" a PE file, and handling Windows answers to its calls. If I'm right, Wine should be able to use 64-bit OpenGL no ? It's a "bit" more complicated then that. Wine executes code in windows binaries. And if they are 32-bit Wine also have to be 32-bit. You should read some FAQ and documentation about Wine. It explains how Wine works and clarifies these basic misconceptions. qdii wrote: > - is it possible to have a true 64-bit wine ( compiled with -m64 ) ? > - if yes, why not make it call 64-bit library ? Yes, it's possible. However in this case Wine will be able to run 64-bit windows applications only. But not 32-bit. Also note that Wine64 is still highly experimental and have lots of issues.