DXBLTOPTIONS enumeration
Describes the methods to use when blitting an image onto a DXSurface.
Syntax
typedef enum DXBLTOPTIONS { DXBOF_DO_OVER = ( 1L << 0 ), DXBOF_DITHER = ( 1L << 1 ) } DXBLTOPTIONS;
Constants
- DXBOF_DO_OVER
-
Source samples should be alpha-blended over the samples in the destination DXSurface. Without this flag, the input samples replace the destination samples.
- DXBOF_DITHER
-
Output surface samples should be dithered.
Remarks
These flags are used by the IDXSurfaceFactory::BitBlt and DXBitBlt functions.
Some transforms do not support dithered output. To determine whether a transform supports dithering, use the IDXTransform::GetMiscFlags method. If the returned DXTMISCFLAGS value has the DXTMF_DITHER_SUPPORTED flag set, the output can be dithered.
Requirements
|
Minimum supported client |
Windows XP |
|---|---|
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Minimum supported server |
Windows 2000 Server |
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Header |
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IDL |
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