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interesting finding (direct draw)

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Hi all, I found that i can get a speed increase on my graphics card when doing a blt from back buffer to front over a usuall flip! I get 450 FFS on the BLT and 75 on the flip Im using a Geforce 2 64 Ti BTW Anyone had anything like this before ? Tim

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ok thanks for that info ;-) thought there must be a reason lol.. 1 quick question though..

The reason i did the test was that it makes my life easier to actually BLT the screen because im going to be doing a kinda of dirty screen updating... where only areas which need re-drawing are re-drawn. If I have to deal with 2 surfaces which are fliped this complicates things a lot..

Is there going to be any real speed loss on any graphics cards if I FastBLT it instead of flip

Thanks

Tim

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