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[idd] driver: relocate the HW cursor thread into CSwapChainProcessor

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It is invalid to call `IddCxMonitorSetupHardwareCursor` before
`IddCxSwapChainSetDevice`. This fixes this by moving the thread into
CSwapChainProcessor and starting it after `IddCxSwapChainSetDevice`
has succeeded.
This commit is contained in:
Geoffrey McRae
2025-08-30 11:56:30 +00:00
parent 7c2e0ec4e9
commit e1a585ad6f
4 changed files with 92 additions and 102 deletions
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90
idd/LGIdd/CIndirectMonitorContext.cpp
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@@ -26,15 +26,11 @@ CIndirectMonitorContext::CIndirectMonitorContext(_In_ IDDCX_MONITOR monitor, CIn
m_monitor(monitor),
m_devContext(device)
{
m_terminateEvent .Attach(CreateEvent(nullptr, FALSE, FALSE, nullptr));
m_cursorDataEvent.Attach(CreateEvent(nullptr, FALSE, FALSE, nullptr));
m_shapeBuffer = new BYTE[512 * 512 * 4];
}
CIndirectMonitorContext::~CIndirectMonitorContext()
{
UnassignSwapChain();
delete[] m_shapeBuffer;
}
void CIndirectMonitorContext::AssignSwapChain(IDDCX_SWAPCHAIN swapChain, LUID renderAdapter, HANDLE newFrameEvent)
@@ -73,96 +69,12 @@ reInit:
return;
}
IDARG_IN_SETUP_HWCURSOR c = {};
c.CursorInfo.Size = sizeof(c.CursorInfo);
c.CursorInfo.AlphaCursorSupport = TRUE;
c.CursorInfo.ColorXorCursorSupport = IDDCX_XOR_CURSOR_SUPPORT_FULL;
c.CursorInfo.MaxX = 512;
c.CursorInfo.MaxY = 512;
c.hNewCursorDataAvailable = m_cursorDataEvent.Get();
NTSTATUS status = IddCxMonitorSetupHardwareCursor(m_monitor, &c);
if (!NT_SUCCESS(status))
{
WdfObjectDelete(swapChain);
DEBUG_ERROR("IddCxMonitorSetupHardwareCursor Failed (0x%08x)", status);
return;
}
m_swapChain.reset(new CSwapChainProcessor(m_devContext, swapChain, m_dx11Device, m_dx12Device, newFrameEvent));
m_lastShapeId = 0;
m_thread.Attach(CreateThread(nullptr, 0, _CursorThread, this, 0, nullptr));
m_swapChain.reset(new CSwapChainProcessor(m_monitor, m_devContext, swapChain, m_dx11Device, m_dx12Device, newFrameEvent));
}
void CIndirectMonitorContext::UnassignSwapChain()
{
SetEvent(m_terminateEvent.Get());
if (m_thread.IsValid())
WaitForSingleObject(m_thread.Get(), INFINITE);
m_swapChain.reset();
m_dx11Device.reset();
m_dx12Device.reset();
ResetEvent(m_terminateEvent .Get());
ResetEvent(m_cursorDataEvent.Get());
}
DWORD CALLBACK CIndirectMonitorContext::_CursorThread(LPVOID arg)
{
reinterpret_cast<CIndirectMonitorContext*>(arg)->CursorThread();
return 0;
}
void CIndirectMonitorContext::CursorThread()
{
HRESULT hr = 0;
bool running = true;
while(running)
{
HANDLE waitHandles[] =
{
m_cursorDataEvent.Get(),
m_terminateEvent.Get()
};
DWORD waitResult = WaitForMultipleObjects(
ARRAYSIZE(waitHandles), waitHandles, FALSE, 100);
switch (waitResult)
{
case WAIT_TIMEOUT:
continue;
// cursorDataEvent
case WAIT_OBJECT_0:
break;
// terminateEvent
case WAIT_OBJECT_0 + 1:
running = false;
continue;
default:
hr = HRESULT_FROM_WIN32(waitResult);
DEBUG_ERROR_HR(hr, "WaitForMultipleObjects");
return;
}
IDARG_IN_QUERY_HWCURSOR in = {};
in.LastShapeId = m_lastShapeId;
in.pShapeBuffer = m_shapeBuffer;
in.ShapeBufferSizeInBytes = 512 * 512 * 4;
IDARG_OUT_QUERY_HWCURSOR out = {};
NTSTATUS status = IddCxMonitorQueryHardwareCursor(m_monitor, &in, &out);
if (FAILED(status))
{
DEBUG_ERROR("IddCxMonitorQueryHardwareCursor failed (0x%08x)", status);
return;
}
m_devContext->SendCursor(out, m_shapeBuffer);
}
}