/*
* Swap handler.
* Called from the swap chain work queue handler.
* There is no need to take the swap chain creation lock in here, or use
* some other method of stopping the swap chain from being destroyed.
* This is because the swap chain creation lock is taken when queueing work,
* and the work queue is flushed before the swap chain is destroyed.
*/
static void DC_SUNXISwapHandler(DC_SUNXI_BUFFER *psBuffer)
{
DC_SUNXI_DEVINFO *psDevInfo = psBuffer->psDevInfo;
DC_SUNXI_SWAPCHAIN *psSwapChain = psDevInfo->psSwapChain;
bool bPreviouslyNotVSynced;
DC_SUNXIFlip(psDevInfo, psBuffer);
bPreviouslyNotVSynced = psSwapChain->bNotVSynced;
psSwapChain->bNotVSynced = true;
if (!DontWaitForVSync(psDevInfo))
{
psSwapChain->bNotVSynced = false;
if (bPreviouslyNotVSynced)
{
psSwapChain->bNotVSynced = !WaitForVSyncSettle(psDevInfo);
}
else if (psBuffer->ulSwapInterval != 0)
{
psSwapChain->bNotVSynced = IMG_FALSE;
}
}
psDevInfo->sPVRJTable.pfnPVRSRVCmdComplete((IMG_HANDLE)psBuffer->hCmdComplete, IMG_TRUE);
}
static OMAPLFB_BOOL WaitForVSyncSettle(OMAPLFB_DEVINFO *psDevInfo)
{
unsigned i;
for(i = 0; i < OMAPLFB_VSYNC_SETTLE_COUNT; i++)
{
if (DontWaitForVSync(psDevInfo) || !OMAPLFBWaitForVSync(psDevInfo))
{
return OMAPLFB_FALSE;
}
}
return OMAPLFB_TRUE;
}
/*
* Called after the screen has unblanked, or after any other occasion
* when we didn't wait for vsync, but now need to. Not doing this after
* unblank leads to screen jitter on some screens.
* Returns true if the screen has been deemed to have settled.
*/
static bool WaitForVSyncSettle(DC_SUNXI_DEVINFO *psDevInfo)
{
unsigned int i;
for(i = 0; i < DC_SUNXI_VSYNC_SETTLE_COUNT; i++)
{
if (DontWaitForVSync(psDevInfo))
{
return false;
}
}
return true;
}
void OMAPLFBSwapHandler(OMAPLFB_BUFFER *psBuffer)
{
OMAPLFB_DEVINFO *psDevInfo = psBuffer->psDevInfo;
OMAPLFB_SWAPCHAIN *psSwapChain = psDevInfo->psSwapChain;
OMAPLFB_BOOL bPreviouslyNotVSynced;
#if defined(SUPPORT_DRI_DRM)
if (!OMAPLFBAtomicBoolRead(&psDevInfo->sLeaveVT))
#endif
{
OMAPLFBFlip(psDevInfo, psBuffer);
}
bPreviouslyNotVSynced = psSwapChain->bNotVSynced;
psSwapChain->bNotVSynced = OMAPLFB_TRUE;
if (!DontWaitForVSync(psDevInfo))
{
OMAPLFB_UPDATE_MODE eMode = OMAPLFBGetUpdateMode(psDevInfo);
int iBlankEvents = OMAPLFBAtomicIntRead(&psDevInfo->sBlankEvents);
switch(eMode)
{
case OMAPLFB_UPDATE_MODE_AUTO:
psSwapChain->bNotVSynced = OMAPLFB_FALSE;
if (bPreviouslyNotVSynced || psSwapChain->iBlankEvents != iBlankEvents)
{
psSwapChain->iBlankEvents = iBlankEvents;
psSwapChain->bNotVSynced = !WaitForVSyncSettle(psDevInfo);
} else if (psBuffer->ulSwapInterval != 0)
{
psSwapChain->bNotVSynced = !OMAPLFBWaitForVSync(psDevInfo);
}
break;
#if defined(PVR_OMAPFB3_MANUAL_UPDATE_SYNC_IN_SWAP)
case OMAPLFB_UPDATE_MODE_MANUAL:
if (psBuffer->ulSwapInterval != 0)
{
(void) OMAPLFBManualSync(psDevInfo);
}
break;
#endif
default:
break;
}
}
psDevInfo->sPVRJTable.pfnPVRSRVCmdComplete((IMG_HANDLE)psBuffer->hCmdComplete, IMG_TRUE);
}