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[idd] hdr: publish only per-content metadata

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Monitor-default HDR metadata describes the virtual display rather than
the captured content. Do not expose it through KVMFR or use it to select
downstream processing limits.

Only publish explicit NEW frame metadata and otherwise use the complete
PQ range internally.
This commit is contained in:
Geoffrey McRae
2026-07-19 20:41:36 +10:00
parent e18925f436
commit ad7d869aa1
5 changed files with 22 additions and 109 deletions
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28
idd/LGIdd/CIndirectDeviceContext.h
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@@ -119,18 +119,6 @@ private:
bool m_canProcessFP16 = false;
bool m_softwareMode = true;
// HDR state from EvtIddCxMonitorSetDefaultHdrMetadata (IddCx 1.10+)
// Protected by m_hdrLock - accessed from both the IDD callback thread
// (SetHDRActive) and the swap-chain thread (PrepareFrameBuffer, GetHDRMetadata).
mutable SRWLOCK m_hdrLock = SRWLOCK_INIT;
bool m_hdrActive = false;
uint16_t m_hdrDisplayPrimary[3][2] = {};
uint16_t m_hdrWhitePoint[2] = {};
uint32_t m_hdrMaxDisplayLuminance = 0;
uint32_t m_hdrMinDisplayLuminance = 0;
uint32_t m_hdrMaxContentLightLevel = 0;
uint32_t m_hdrMaxFrameAverageLightLevel = 0;
// Previous HDR metadata used to detect changes for formatVer bumps
uint16_t m_lastHDRDisplayPrimary[3][2] = {};
uint16_t m_lastHDRWhitePoint[2] = {};
@@ -231,25 +219,9 @@ public:
void SendCursor(const IDARG_OUT_QUERY_HWCURSOR & info, const BYTE * data,
UINT sdrWhiteLevel);
// Tracks HDR state from EvtIddCxMonitorSetDefaultHdrMetadata
void SetHDRActive(const struct IDDCX_HDR10_METADATA * hdrMeta);
void SetColorTransform(std::shared_ptr<const D12ColorTransform> transform);
std::shared_ptr<const D12ColorTransform> GetColorTransform() const;
// Returns true if the display is currently in HDR mode
bool IsHDRActive() const
{
AcquireSRWLockShared(&m_hdrLock);
bool result = m_hdrActive;
ReleaseSRWLockShared(&m_hdrLock);
return result;
}
// Copies current HDR metadata into the provided D12FrameFormat.
// Returns true if HDR is active and metadata was copied.
bool GetHDRMetadata(D12FrameFormat & format) const;
CIVSHMEM &GetIVSHMEM() { return m_ivshmem; }
};