comp.graphics.algorithms

Subject: Re: Help with blit bug!

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> I rewrote the code the code to do one pixel at a time and it works
> perfectly, although slower.

Well isn't this bug a hard one:)

I can only think of some weird alignment issue: when you calculate an
address via reinterpret_cast, you might get one that is not aligned on a
dword-boundary, and that might cause wrong behaviour on your device. So
another suggestion for testing purposes: when working with dword-data,
ensure being dword-aligned.

For example:
char* memory = ...;
// Not 4-byte aligned:
int32* a = (int32*)(&memory[10]);

--
Kalle Rutanen
http://kaba.hilvi.org

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