ddraw correctness fixes patch
matt at aclaro.com
Sun Mar 20 11:05:42 CST 2005
Christian Costa wrote:
> I think the problem Matthew was talking is how to remap surface pointers.
> I sent something to Mattew but I forgot to cc wine-devel, sorry.
> Basically it was :
> depth = surface_desc.u4.ddpfPixelFormat.u1.dwRGBBitCount;
> ddesc.lpSurface -= (lock_dst.left - lock_union.left)*(depth+7)/8 +
> ddesc.lPictch * (lock_dst.top - lock_union.top);
> sdesc.lpSurface -= (lock_src.left - lock_union.left)*(depth+7)/8) +
> sdesc.lPictch * (lock_src.top - lock_union.top);
I implemented the surface pointer remapping in my lastest patch, but
chose to adjust the surface pointers from the raw surface pointer
instead of the pre-adjusted value returned from the Lock() call. It's
the same logic, but easier to verify as correct to the eye.
If you could take a look at the latest patch, I'd appreciate it.
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