mirror of
https://github.com/gnif/LookingGlass.git
synced 2026-07-21 06:42:02 +00:00
791da3387a
Keep the replug lifecycle gated until the old swap chain has drained and released its pending frame, and the replacement swap chain is fully initialized. Coalesce additional requests into a follow-up replug to prevent overlapping topology changes and IddCx release-frame timeout bugchecks.
115 lines
3.5 KiB
C++
115 lines
3.5 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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m_devContext->OnSwapChainAssigned();
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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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const bool hadSwapChain = !!processor;
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processor.reset();
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dx11Device.reset();
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dx12Device.reset();
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if (hadSwapChain)
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m_devContext->OnSwapChainReleased();
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}
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