mirror of
https://github.com/gnif/LookingGlass.git
synced 2026-07-17 04:42:01 +00:00
1ce446f97a
While it would make much more sense to use these then a full replug to change modes, Microsoft have not properly implemented the API to clear the cached monitor mode states internally, making these calls useless. Revert to just replugging the device on mode change
109 lines
3.4 KiB
C++
109 lines
3.4 KiB
C++
/**
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* Looking Glass
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* Copyright © 2017-2026 The Looking Glass Authors
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* https://looking-glass.io
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License as published by the Free
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* Software Foundation; either version 2 of the License, or (at your option)
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* any later version.
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*
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* This program is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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* more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, write to the Free Software Foundation, Inc., 59
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* Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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#include "CIndirectMonitorContext.h"
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#include "CPlatformInfo.h"
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#include "CDebug.h"
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#include "CPipeServer.h"
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CIndirectMonitorContext::CIndirectMonitorContext(_In_ IDDCX_MONITOR monitor, CIndirectDeviceContext * device) :
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m_monitor(monitor),
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m_devContext(device)
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{
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}
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CIndirectMonitorContext::~CIndirectMonitorContext()
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{
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UnassignSwapChain();
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m_devContext->OnMonitorDestroyed(m_monitor);
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}
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void CIndirectMonitorContext::AssignSwapChain(IDDCX_SWAPCHAIN swapChain, LUID renderAdapter, HANDLE newFrameEvent)
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{
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UnassignSwapChain();
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// Build everything into locals so the members are never observed
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// half-constructed by a concurrent unassign, and so the processor (which
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// spawns a worker thread) is created outside the lock.
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std::shared_ptr<CD3D11Device> dx11Device;
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std::shared_ptr<CD3D12Device> dx12Device;
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for (;;)
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{
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dx11Device = std::make_shared<CD3D11Device>(renderAdapter);
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if (FAILED(dx11Device->Init()))
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{
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WdfObjectDelete(swapChain);
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return;
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}
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UINT64 alignSize = CPlatformInfo::GetPageSize();
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dx12Device = std::make_shared<CD3D12Device>(renderAdapter);
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CD3D12Device::InitResult r = dx12Device->Init(m_devContext->GetIVSHMEM(), alignSize);
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if (r == CD3D12Device::RETRY)
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{
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dx12Device.reset();
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dx11Device.reset();
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continue;
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}
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if (r == CD3D12Device::FAILURE)
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{
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WdfObjectDelete(swapChain);
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return;
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}
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if (!m_devContext->SetupLGMP(alignSize))
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{
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WdfObjectDelete(swapChain);
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DEBUG_ERROR("SetupLGMP failed");
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return;
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}
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break;
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}
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std::unique_ptr<CSwapChainProcessor> processor(new CSwapChainProcessor(
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m_monitor, m_devContext, swapChain, dx11Device, dx12Device, newFrameEvent));
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AcquireSRWLockExclusive(&m_lock);
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m_dx11Device = std::move(dx11Device);
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m_dx12Device = std::move(dx12Device);
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m_swapChain = std::move(processor);
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ReleaseSRWLockExclusive(&m_lock);
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}
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void CIndirectMonitorContext::UnassignSwapChain()
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{
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// Detach under the lock, then destroy outside it. Destroying the processor
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// joins its worker thread, whose teardown (WdfObjectDelete) re-enters this
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// method on another thread - holding the lock across that would deadlock.
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std::unique_ptr<CSwapChainProcessor> processor;
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std::shared_ptr<CD3D11Device> dx11Device;
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std::shared_ptr<CD3D12Device> dx12Device;
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AcquireSRWLockExclusive(&m_lock);
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processor = std::move(m_swapChain);
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dx11Device = std::move(m_dx11Device);
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dx12Device = std::move(m_dx12Device);
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ReleaseSRWLockExclusive(&m_lock);
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processor.reset();
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dx11Device.reset();
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dx12Device.reset();
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} |