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[idd] driver: implement dynamic mode switch support

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This commit is contained in:
Geoffrey McRae
2025-03-28 23:17:31 +00:00
parent 86de1c9ac6
commit cb423730e4
5 changed files with 186 additions and 52 deletions
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137
idd/LGIdd/CIndirectDeviceContext.cpp
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@@ -114,6 +114,14 @@ void CIndirectDeviceContext::InitAdapter()
}
factory->Release();
// setup some default display modes
DisplayMode m;
m.refresh = 120;
m.width = 800 ; m.height = 600 ; m.preferred = false; m_displayModes.push_back(m);
m.width = 1024; m.height = 768 ; m.preferred = false; m_displayModes.push_back(m);
m.width = 1920; m.height = 1200; m.preferred = true ; m_displayModes.push_back(m);
auto * wrapper = WdfObjectGet_CIndirectDeviceContextWrapper(m_adapter);
wrapper->context = this;
}
@@ -180,6 +188,118 @@ void CIndirectDeviceContext::FinishInit(UINT connectorIndex)
}
}
void CIndirectDeviceContext::ReplugMonitor(UINT connectorIndex)
{
if (m_monitor == WDF_NO_HANDLE)
{
FinishInit(connectorIndex);
return;
}
if (m_replugMonitor)
return;
DEBUG_TRACE("ReplugMonitor %u", connectorIndex);
m_replugMonitor = true;
NTSTATUS status = IddCxMonitorDeparture(m_monitor);
if (!NT_SUCCESS(status))
{
m_replugMonitor = false;
DEBUG_ERROR("IddCxMonitorDeparture Failed (0x%08x)", status);
return;
}
}
void CIndirectDeviceContext::UnassignSwapChain()
{
if (m_replugMonitor)
{
m_replugMonitor = false;
FinishInit(0);
}
}
static inline void FillSignalInfo(DISPLAYCONFIG_VIDEO_SIGNAL_INFO & mode, DWORD width, DWORD height, DWORD vsync, bool monitorMode)
{
mode.totalSize.cx = mode.activeSize.cx = width;
mode.totalSize.cy = mode.activeSize.cy = height;
mode.AdditionalSignalInfo.vSyncFreqDivider = monitorMode ? 0 : 1;
mode.AdditionalSignalInfo.videoStandard = 255;
mode.vSyncFreq.Numerator = vsync;
mode.vSyncFreq.Denominator = 1;
mode.hSyncFreq.Numerator = vsync * height;
mode.hSyncFreq.Denominator = 1;
mode.scanLineOrdering = DISPLAYCONFIG_SCANLINE_ORDERING_PROGRESSIVE;
mode.pixelRate = ((UINT64)vsync) * ((UINT64)width) * ((UINT64)height);
}
NTSTATUS CIndirectDeviceContext::ParseMonitorDescription(
const IDARG_IN_PARSEMONITORDESCRIPTION* inArgs,
IDARG_OUT_PARSEMONITORDESCRIPTION* outArgs)
{
outArgs->MonitorModeBufferOutputCount = (UINT)m_displayModes.size();
if (inArgs->MonitorModeBufferInputCount < (UINT)m_displayModes.size())
return (inArgs->MonitorModeBufferInputCount > 0) ? STATUS_BUFFER_TOO_SMALL : STATUS_SUCCESS;
auto * mode = inArgs->pMonitorModes;
for (auto it = m_displayModes.cbegin(); it != m_displayModes.cend(); ++it, ++mode)
{
mode->Size = sizeof(IDDCX_MONITOR_MODE);
mode->Origin = IDDCX_MONITOR_MODE_ORIGIN_MONITORDESCRIPTOR;
FillSignalInfo(mode->MonitorVideoSignalInfo, it->width, it->height, it->refresh, true);
if (it->preferred)
outArgs->PreferredMonitorModeIdx =
(UINT)std::distance(m_displayModes.cbegin(), it);
}
return STATUS_SUCCESS;
}
NTSTATUS CIndirectDeviceContext::MonitorGetDefaultModes(
const IDARG_IN_GETDEFAULTDESCRIPTIONMODES* inArgs,
IDARG_OUT_GETDEFAULTDESCRIPTIONMODES* outArgs)
{
outArgs->DefaultMonitorModeBufferOutputCount = (UINT)m_displayModes.size();
if (inArgs->DefaultMonitorModeBufferInputCount < (UINT)m_displayModes.size())
return (inArgs->DefaultMonitorModeBufferInputCount > 0) ? STATUS_BUFFER_TOO_SMALL : STATUS_SUCCESS;
auto* mode = inArgs->pDefaultMonitorModes;
for (auto it = m_displayModes.cbegin(); it != m_displayModes.cend(); ++it, ++mode)
{
mode->Size = sizeof(IDDCX_MONITOR_MODE);
mode->Origin = IDDCX_MONITOR_MODE_ORIGIN_DRIVER;
FillSignalInfo(mode->MonitorVideoSignalInfo, it->width, it->height, it->refresh, true);
if (it->preferred)
outArgs->PreferredMonitorModeIdx =
(UINT)std::distance(m_displayModes.cbegin(), it);
}
return STATUS_SUCCESS;
}
NTSTATUS CIndirectDeviceContext::MonitorQueryTargetModes(
const IDARG_IN_QUERYTARGETMODES* inArgs,
IDARG_OUT_QUERYTARGETMODES* outArgs)
{
outArgs->TargetModeBufferOutputCount = (UINT)m_displayModes.size();
if (inArgs->TargetModeBufferInputCount < (UINT)m_displayModes.size())
return (inArgs->TargetModeBufferInputCount > 0) ? STATUS_BUFFER_TOO_SMALL : STATUS_SUCCESS;
auto* mode = inArgs->pTargetModes;
for (auto it = m_displayModes.cbegin(); it != m_displayModes.cend(); ++it, ++mode)
{
mode->Size = sizeof(IDDCX_TARGET_MODE);
FillSignalInfo(mode->TargetVideoSignalInfo.targetVideoSignalInfo, it->width, it->height, it->refresh, false);
}
return STATUS_SUCCESS;
}
bool CIndirectDeviceContext::SetupLGMP(size_t alignSize)
{
// this may get called multiple times as we need to delay calling it until
@@ -194,7 +314,9 @@ bool CIndirectDeviceContext::SetupLGMP(size_t alignSize)
KVMFR kvmfr = {};
memcpy_s(kvmfr.magic, sizeof(kvmfr.magic), KVMFR_MAGIC, sizeof(KVMFR_MAGIC) - 1);
kvmfr.version = KVMFR_VERSION;
kvmfr.features = KVMFR_FEATURE_SETCURSORPOS;
kvmfr.features =
KVMFR_FEATURE_SETCURSORPOS |
KVMFR_FEATURE_WINDOWSIZE;
strncpy_s(kvmfr.hostver, LG_VERSION_STR, sizeof(kvmfr.hostver) - 1);
ss.write(reinterpret_cast<const char *>(&kvmfr), sizeof(kvmfr));
}
@@ -396,6 +518,19 @@ void CIndirectDeviceContext::LGMPTimer()
g_pipe.SetCursorPos(sp->x, sp->y);
break;
}
case KVMFR_MESSAGE_WINDOWSIZE:
{
KVMFRWindowSize* ws = (KVMFRWindowSize*)msg;
m_displayModes.clear();
DisplayMode m;
m.width = ws->w;
m.height = ws->h;
m.refresh = 120;
m.preferred = true;
m_displayModes.push_back(m);
ReplugMonitor(0);
}
}
lgmpHostAckData(m_pointerQueue);