| Reference Manual - 1.0.0 | ||
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For an interlaced display, this returns the currently inactive field: 0 for the top field, and 1 for the bottom field.
| GetCurrentOutputField ( | ||||
| IDirectFBDisplayLayer | * | thiz, | ||
| int | * | ret_field | ||
| ); | ||||
The inactive field is the one you should draw to next to avoid tearing, the active field is the one currently being displayed.
For a progressive output, this should always return 0. We should also have some other call to indicate whether the display layer is interlaced or progressive, but this is a start.