I was genuinely concerned that everything I was doing with mango and Pixman was going to turn out to be pointless. It wasn't, thankfully, there was a noticeable difference after introducing them. But it was a gamble for sure, because there was no smaller test I could really do to know it was worth it in advance - if I wanted to replace that DLL, I was going to have to replace the whole DLL because it was C++, the DLL exports were all mangled names for classes that all kind of interacted with each other, so I couldn't just cleanly replace one call and see that it was a good idea. I try to gather as much evidence as I can to back the idea it'll work before I make the leap, but I've learned that if you really want to get stuff done sometimes you just have to go for it and assume there is a way to salvage it if it fails
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