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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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63
idd/LGIdd/Device.cpp
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@@ -33,10 +33,11 @@
#include "CIndirectDeviceContext.h"
#include "CIndirectMonitorContext.h"
WDFDEVICE l_wdfDevice = nullptr;
NTSTATUS LGIddDeviceD0Entry(WDFDEVICE device, WDF_POWER_DEVICE_STATE previousState)
{
UNREFERENCED_PARAMETER(previousState);
UNREFERENCED_PARAMETER(device);
auto * wrapper = WdfObjectGet_CIndirectDeviceContextWrapper(device);
wrapper->context->InitAdapter();
@@ -81,60 +82,25 @@ static inline void FillSignalInfo(DISPLAYCONFIG_VIDEO_SIGNAL_INFO & mode, DWORD
NTSTATUS LGIddParseMonitorDescription(const IDARG_IN_PARSEMONITORDESCRIPTION* inArgs,
IDARG_OUT_PARSEMONITORDESCRIPTION* outArgs)
{
outArgs->MonitorModeBufferOutputCount = ARRAYSIZE(DisplayModes);
if (inArgs->MonitorModeBufferInputCount < ARRAYSIZE(DisplayModes))
return (inArgs->MonitorModeBufferInputCount > 0) ? STATUS_BUFFER_TOO_SMALL : STATUS_SUCCESS;
for (UINT i = 0; i < ARRAYSIZE(DisplayModes); ++i)
{
inArgs->pMonitorModes[i].Size = sizeof(IDDCX_MONITOR_MODE);
inArgs->pMonitorModes[i].Origin = IDDCX_MONITOR_MODE_ORIGIN_MONITORDESCRIPTOR;
FillSignalInfo(inArgs->pMonitorModes[i].MonitorVideoSignalInfo,
DisplayModes[i][0], DisplayModes[i][1], DisplayModes[i][2], true);
}
if (!l_wdfDevice)
return STATUS_INVALID_PARAMETER;
outArgs->PreferredMonitorModeIdx = PreferredDisplayMode;
return STATUS_SUCCESS;
auto* wrapper = WdfObjectGet_CIndirectDeviceContextWrapper(l_wdfDevice);
return wrapper->context->ParseMonitorDescription(inArgs, outArgs);
}
NTSTATUS LGIddMonitorGetDefaultModes(IDDCX_MONITOR monitor, const IDARG_IN_GETDEFAULTDESCRIPTIONMODES * inArgs,
IDARG_OUT_GETDEFAULTDESCRIPTIONMODES * outArgs)
{
UNREFERENCED_PARAMETER(monitor);
outArgs->DefaultMonitorModeBufferOutputCount = ARRAYSIZE(DisplayModes);
if (inArgs->DefaultMonitorModeBufferInputCount < ARRAYSIZE(DisplayModes))
return (inArgs->DefaultMonitorModeBufferInputCount > 0) ? STATUS_BUFFER_TOO_SMALL : STATUS_SUCCESS;
for (UINT i = 0; i < ARRAYSIZE(DisplayModes); ++i)
{
inArgs->pDefaultMonitorModes[i].Size = sizeof(IDDCX_MONITOR_MODE);
inArgs->pDefaultMonitorModes[i].Origin = IDDCX_MONITOR_MODE_ORIGIN_DRIVER;
FillSignalInfo(inArgs->pDefaultMonitorModes[i].MonitorVideoSignalInfo,
DisplayModes[i][0], DisplayModes[i][1], DisplayModes[i][2], true);
}
outArgs->PreferredMonitorModeIdx = PreferredDisplayMode;
return STATUS_SUCCESS;
auto* wrapper = WdfObjectGet_CIndirectMonitorContextWrapper(monitor);
return wrapper->context->GetDeviceContext()->MonitorGetDefaultModes(inArgs, outArgs);
}
NTSTATUS LGIddMonitorQueryTargetModes(IDDCX_MONITOR monitor, const IDARG_IN_QUERYTARGETMODES * inArgs,
IDARG_OUT_QUERYTARGETMODES * outArgs)
{
UNREFERENCED_PARAMETER(monitor);
outArgs->TargetModeBufferOutputCount = ARRAYSIZE(DisplayModes);
if (inArgs->TargetModeBufferInputCount < ARRAYSIZE(DisplayModes))
return (inArgs->TargetModeBufferInputCount > 0) ? STATUS_BUFFER_TOO_SMALL : STATUS_SUCCESS;
for (UINT i = 0; i < ARRAYSIZE(DisplayModes); ++i)
{
inArgs->pTargetModes[i].Size = sizeof(IDDCX_TARGET_MODE);
FillSignalInfo(inArgs->pTargetModes[i].TargetVideoSignalInfo.targetVideoSignalInfo,
DisplayModes[i][0], DisplayModes[i][1], DisplayModes[i][2], false);
}
return STATUS_SUCCESS;
auto* wrapper = WdfObjectGet_CIndirectMonitorContextWrapper(monitor);
return wrapper->context->GetDeviceContext()->MonitorQueryTargetModes(inArgs, outArgs);
}
NTSTATUS LGIddMonitorAssignSwapChain(IDDCX_MONITOR monitor, const IDARG_IN_SETSWAPCHAIN* inArgs)
@@ -149,6 +115,7 @@ NTSTATUS LGIddMonitorUnassignSwapChain(IDDCX_MONITOR monitor)
{
auto* wrapper = WdfObjectGet_CIndirectMonitorContextWrapper(monitor);
wrapper->context->UnassignSwapChain();
wrapper->context->GetDeviceContext()->UnassignSwapChain();
return STATUS_SUCCESS;
}
@@ -190,6 +157,7 @@ NTSTATUS LGIddCreateDevice(_Inout_ PWDFDEVICE_INIT deviceInit)
auto * wrapper = WdfObjectGet_CIndirectDeviceContextWrapper(object);
if (wrapper)
wrapper->Cleanup();
l_wdfDevice = nullptr;
};
WDFDEVICE device = nullptr;
@@ -197,6 +165,13 @@ NTSTATUS LGIddCreateDevice(_Inout_ PWDFDEVICE_INIT deviceInit)
if (!NT_SUCCESS(status))
return status;
/*
* Because we are limited to IddCx 1.5 to retain Windows 10 support we have
* no way of getting the device context in `LGIdddapterCommitModes`, as such
* we need to store this for later.
*/
l_wdfDevice = device;
status = IddCxDeviceInitialize(device);
auto wrapper = WdfObjectGet_CIndirectDeviceContextWrapper(device);