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[idd] add support to return HDR metadata to clients

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This commit is contained in:
Geoffrey McRae
2026-07-15 18:35:22 +10:00
parent 11b3ac00a8
commit 1b7a815cee
8 changed files with 233 additions and 16 deletions
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37
idd/LGIdd/CIndirectDeviceContext.h
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@@ -90,6 +90,27 @@ private:
UINT m_iddCxVersion = 0;
bool m_canProcessFP16 = false;
// 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] = {};
uint32_t m_lastHDRMaxDisplayLuminance = 0;
uint32_t m_lastHDRMinDisplayLuminance = 0;
uint32_t m_lastHDRMaxContentLightLevel = 0;
uint32_t m_lastHDRMaxFrameAverageLightLevel = 0;
bool m_lastHDRActive = false;
void QueryIddCxCapabilities();
bool CanUseIddCx110DDIs() const { return m_canProcessFP16; }
@@ -156,6 +177,22 @@ public:
void SendCursor(const IDARG_OUT_QUERY_HWCURSOR & info, const BYTE * data);
// Tracks HDR state from EvtIddCxMonitorSetDefaultHdrMetadata
void SetHDRActive(const struct IDDCX_HDR_METADATA * hdrMeta);
// 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; }
};