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tHiSiSbOb

BltFast woes

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I am just trying to get an image on the screen usin bltfast. But it is not showing up. If i use Blt it works. Here is my code: RECT rct; rct.left =10; rct.top=10; rct.bottom=120; rct.right=120; Primary->BltFast(100,100,Bitmap,&rct,DDBLTFAST_WAIT); What am i doing wrong. "Computers are only as smart as their programers" My Site-> Still working on it.

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Should you not be drawing onto the back buffer, not the primary one? Also, make sure that you''re loading the bitmap onto the surface correctly.

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You might try checking the return value from the API. My guess is that a portion of the blit is offscreen and that is why it works with Blt and not BltFast.

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If you have a DDraw Clipper attached to your blit target (in this case Primary) then BltFast will not work.

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