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[idd] stop using IddCxMonitorUpdateModes(2)

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While it would make much more sense to use these then a full replug to
change modes, Microsoft have not properly implemented the API to clear
the cached monitor mode states internally, making these calls useless.

Revert to just replugging the device on mode change
This commit is contained in:
Geoffrey McRae
2026-07-16 16:31:53 +10:00
parent b97a0b79f1
commit 1ce446f97a
10 changed files with 165 additions and 233 deletions
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14
idd/LGIdd/CIndirectDeviceContext.h
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@@ -140,7 +140,6 @@ private:
void DeInitLGMP();
void LGMPTimer();
void ResendCursor() const;
bool UpdateMonitorModes();
// Guards m_displayModes and m_edid. The mode list is rebuilt on the LGMP
// timer thread (SetResolution) while IddCx concurrently enumerates it on its
@@ -153,13 +152,9 @@ private:
CSettings::DisplayMode m_setMode = {};
bool m_doSetMode = false;
volatile LONG m_replugMonitorQueued = 0;
volatile LONG m_recoverModeUpdateSwapChain = 0;
// Set from the IddCx unassign callback to defer the monitor rebuild
// (FinishInit) onto the LGMP timer. Creating/arriving a new monitor from
// inside the old monitor's unassign callback re-enters IddCx while its
// swap-chain teardown is still unwinding, which leaves the new swap-chain
// surfaces in a lost/abandoned state.
// Set by ReplugMonitor after a departure to rebuild the monitor from the LGMP
// timer, off the IddCx callback thread.
volatile LONG m_finishInitQueued = 0;
public:
@@ -175,9 +170,8 @@ public:
void FinishInit(UINT connectorIndex);
void ReplugMonitor();
void OnMonitorDestroyed(IDDCX_MONITOR monitor);
void OnAssignSwapChain();
void OnUnassignedSwapChain();
void OnSwapChainLost();
NTSTATUS ParseMonitorDescription(
const IDARG_IN_PARSEMONITORDESCRIPTION* inArgs, IDARG_OUT_PARSEMONITORDESCRIPTION* outArgs);