Am Donnerstag 19 Oktober 2006 02:46 schrieb Robert Lunnon: > I'm still trying to work this out, see below, but I have a silly question, > how *should* IWineGDISurfaceImpl_Blt behave if args 2 & 3 are NULL IE > DestRect and SrcSurface are both NULL. Is this a no-op ? No, look at the DDBLTFX structure and the dwFlags parameter. IDirectDrawSurface7::Blt knows a few source-less blts, like colorfill.
One of the last remaining ddraw docs on the msdn: http://msdn.microsoft.com/archive/default.asp?url=/archive/en-us/ddraw7/directdraw7/ddref_4b7b.asp About the other things, I have to look at them. But it seems that there are DXTN surfaces(compressed textures) involved, and 2D operation on compressed textures are implemented in a very basic fashion only, and likely to produce problems.
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