As we know, Wine has the ability to run windows native Dlls instead of it's own library files. For example you can use the original d3dx9.dll instead of wine's own d3dx9.dll implementation.
Does anyone have good stats on performance differences between native and wine libraries? Has anyone tried and had success implementing library supports to Wine by using library files not provided by Wine (like WPF), can it even be done?
In a comprehensive question, what are the performance differences between common native dlls versus wine dlls for games and more intense programs? And can support for new programs be added by fetching a native dll from windows that hasn't been implemented yet to wine in it's open source form?