[5/6] ddraw: fix palette copying when destination palette is NULL

[Alexander Dorofeyev]

OK, I'll see what I can do with the test. Speaking of tests, I submitted test
for zero vertex rhw case (as suggested by H.Verbeet to avoid future
regressions), but I think it didn't get accepted. Perhaps, you can look through
it and provide some feedback? Would be good to hear the bad news now, before I
submit more wrong stuff (esp. considering that I'm also trying to write a test
for another issue with Aliens vs Predator 1 that I want to fix). I'm attaching
the zero rhw test.

Stefan Dösinger wrote:
> Am Montag, 31. Dezember 2007 12:43:37 schrieb Alexander Dorofeyev:
>> The thing that it tries this copy palette thing at all (AVP1 doesn't depend
>> on that BTW, it does SetPalette on both source and target) - that shouldn't
>> be difficult to test, I think I could write it. Beyond that, I don't know,
>> the documentation on these old interfaces seems non-existant. Is there a
>> way to obtain DX6 docs?
> I suspect that we shouldn't copy the palette at all, I think Texture::Load and 
> friends just copy the bytes over. A test could verify / falsify that. As for 
> the docs, there were older dx docs available on some websites, but I lost the 
> link. I'll see if I can find it.



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