VideoOverlay_DisplayBuffer (changes)
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VideoOverlay
» SWI Calls
» VideoOverlay_DisplayBuffer
VideoOverlay_DisplayBuffer
(SWI &59CC2)
| Entry | |
|---|---|
| R0 | Overlay ID |
| R1 | Buffer number |
| Exit | |
|---|---|
| - | All registers preserved |
Use
Switches which buffer is being displayed by the overlay. A negative buffer number will hide the overlay. It is important to call this every time you have a new frame to display (even if the buffer number remains the same) – if software rendering is in use use, then VideoOverlay will use this as an indicator that the overlay needs redrawing.
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