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[client] ds: waitFrame now returns a bool to force rendering if needed

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X11 needs to calibrate to get the best possible latency, as such it
needs the scene to render so that the render time of the scene can be
accounted for in the delay calculation.
This commit is contained in:
Geoffrey McRae
2021-08-04 06:49:35 +10:00
parent 0f7fa32d12
commit c15d0dc672
4 changed files with 21 additions and 6 deletions
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7
client/include/interface/displayserver.h
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@@ -154,8 +154,11 @@ struct LG_DisplayServerOps
#endif
/* Waits for a good time to render the next frame in time for the next vblank.
* This is optional and a display server may choose to not implement it. */
void (*waitFrame)(void);
* This is optional and a display server may choose to not implement it.
*
* return true to force the frame to be rendered, this is used by X11 for
* calibration */
bool (*waitFrame)(void);
/* This must be called when waitFrame returns, but no frame is actually rendered. */
void (*skipFrame)(void);