FAST alpha posible?

BlitzPlus Forums/BlitzPlus Programming/FAST alpha posible?

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Hi,

I'm not actually a BlitzPlus user, but I was reading this discussion and I was surprised to see no mention of LockedPixels() and related functions. I thought those functions were introduced to speed up writing to graphics buffers? (In fact I thought I saw another topic in General Discussions about it not long ago, something like "2D alpha is possible..."). Could you not use LockedPixels() for alpha blending and so on?