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https://github.com/gnif/LookingGlass.git
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[host] made DXGI ReInitialization more robust on mode changes
DXGI doesn't like to restart too fast, com exceptions are logged and the duplication device fails to create with an E_ACCESS_DENIED error. Adding a 200ms sleep between teardown and re-init resolves this issue.
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@ -118,22 +118,23 @@ bool DXGI::Initialize()
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);
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adapter.Release();
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if (FAILED(status))
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if (FAILED(status) || !m_device)
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{
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DEBUG_ERROR("Failed to create D3D11 device");
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DeInitialize();
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return false;
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}
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CComQIPtr<IDXGIDevice1> device1 = m_device;
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if (!device1)
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// we try this twice just incase we still get an error
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// on re-initialization
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for(int i = 0; i < 2; ++i)
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{
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DEBUG_ERROR("Failed to get IDXGIDevice1");
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DeInitialize();
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return false;
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status = m_output->DuplicateOutput(m_device, &m_dup);
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if (SUCCEEDED(status))
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break;
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Sleep(200);
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}
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status = m_output->DuplicateOutput(m_device, &m_dup);
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if (FAILED(status))
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{
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DEBUG_ERROR("DuplicateOutput Failed: %08x", status);
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@ -181,6 +182,7 @@ void DXGI::DeInitialize()
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{
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delete[] m_pointer;
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m_pointer = NULL;
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m_pointerBufSize = 0;
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}
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if (m_texture)
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@ -204,6 +206,19 @@ void DXGI::DeInitialize()
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m_initialized = false;
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}
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bool DXGI::ReInitialize()
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{
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DeInitialize();
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/*
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DXGI needs some time when mode switches occur, failing to do so causes
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failure to start and exceptions internal to DXGI
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*/
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Sleep(200);
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return Initialize();
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}
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FrameType DXGI::GetFrameType()
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{
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if (!m_initialized)
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@ -230,6 +245,9 @@ size_t DXGI::GetMaxFrameSize()
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bool DXGI::GrabFrame(FrameInfo & frame)
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{
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if (!m_initialized)
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return false;
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DXGI_OUTDUPL_FRAME_INFO frameInfo;
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CComPtr<IDXGIResource> res;
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@ -239,27 +257,31 @@ bool DXGI::GrabFrame(FrameInfo & frame)
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status = m_dup->AcquireNextFrame(INFINITE, &frameInfo, &res);
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if (SUCCEEDED(status))
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break;
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// desktop switch, mode change or switch DWM on or off
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if (status == DXGI_ERROR_ACCESS_LOST)
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{
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DeInitialize();
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if (!Initialize())
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switch (status)
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{
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case DXGI_ERROR_ACCESS_LOST: // desktop switch, mode change or switch DWM on or off
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case WAIT_ABANDONED: // this can happen also during desktop switches, not documented by MS though
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{
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DEBUG_ERROR("Failed to re-initialize after access was lost");
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return false;
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if (!ReInitialize())
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{
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DEBUG_ERROR("Failed to re-initialize after access was lost");
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return false;
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}
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continue;
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}
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continue;
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}
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// unknown failure
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DEBUG_INFO("AcquireNextFrame failed: %08x", status);
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return false;
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default:
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// unknown failure
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DEBUG_INFO("AcquireNextFrame failed: %08x", status);
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return false;
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}
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}
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// retry count exceeded
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if (FAILED(status))
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{
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m_dup->ReleaseFrame();
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DEBUG_ERROR("Failed to acquire next frame");
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return false;
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}
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@ -267,6 +289,7 @@ bool DXGI::GrabFrame(FrameInfo & frame)
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CComQIPtr<ID3D11Texture2D> src = res;
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if (!src)
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{
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m_dup->ReleaseFrame();
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DEBUG_ERROR("Failed to get src ID3D11Texture2D");
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return false;
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}
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@ -290,6 +313,7 @@ bool DXGI::GrabFrame(FrameInfo & frame)
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status = m_dup->GetFramePointerShape(m_pointerBufSize, m_pointer, &m_pointerSize, &m_shapeInfo);
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if (!SUCCEEDED(status))
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{
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m_dup->ReleaseFrame();
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DEBUG_ERROR("Failed to get the new pointer shape: %08x", status);
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return false;
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}
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@ -42,6 +42,8 @@ namespace Capture
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bool GrabFrame(struct FrameInfo & frame);
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private:
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bool ReInitialize();
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bool m_initialized;
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MTMemcpy m_memcpy;
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unsigned int m_width;
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