[Wine] Purpose of DIB Engine?

[James Huk]

Hello again.

Today I got following question:

What is the purpose of DIB Engine? Is it to speed up DirectDraw apps, or is
it to add missing functionality for DirectDraw „emulation”? I'm asking this
because I recently tested few DDraw apps (Fallout2 and Happyland Adventures)
with DIB enabled and... well for HA there was now significant speed
difference, and Fallout2 slowed down even more :( . So what's up with DIB
anyway? I thought it was supposed to speed up DDraw apps, but now I'm
confused...

Thanks in advance.
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