IDirectFBSurface - GetAccelerationMask [DirectFB Reference Manual]

GetAccelerationMask

Get a mask of drawing functions that are hardware accelerated with the current settings.

GetAccelerationMask (

IDirectFBSurface * thiz,

IDirectFBSurface * source,

DFBAccelerationMask * ret_mask

);

If a source surface is specified the mask will also contain accelerated blitting functions. Note that there is no guarantee that these will actually be accelerated since the surface storage (video/system) is examined only when something actually gets drawn or blitted.
如果一个源表面被指定掩码，也将包含加速blitting功能。注意，我们不能保证这些实际上都加快了，因为当一些确实drawn或blitted时，表面存储（视频/系统）仅仅被检查。

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GetAccelerationMask (
	IDirectFBSurface	*	thiz,
	IDirectFBSurface	*	source,
	DFBAccelerationMask	*	ret_mask
);