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Copying Surfaces |
The term blit is shorthand for "bit block transfer," which is the process of transferring blocks of data from one place to another in memory. The blitting device driver interface (DDI) continues to be used in Microsoft DirectX 9.0 as the primary mechanism for moving large rectangles of pixels on a per-frame basis, the mechanism behind the copy-oriented Device.Present method. The transportation of artwork in the blit operation is performed by the Device.UpdateTexture method. Artwork also can be copied in DirectX 9.0 by using the Device.UpdateSurface method, which copies a rectangular subset of pixels.
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