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[host] dxgi: re-mapping is required to sync memory changes properly

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This commit is contained in:
Geoffrey McRae 2017-12-18 21:34:44 +11:00
parent 0d1d49b00e
commit 1f004472cc
2 changed files with 21 additions and 35 deletions
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51
host/Capture/DXGI.cpp
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@ -187,34 +187,12 @@ bool DXGI::Initialize(CaptureOptions * options)
return false;
}
status = m_deviceContext->Map(m_texture, 0, D3D11_MAP_READ, 0, &m_mapping);
if (FAILED(status))
{
DEBUG_ERROR("Failed to map the texture: %08x", (int)status);
DeInitialize();
return false;
}
m_surfaceMapped = true;
D3D11_QUERY_DESC qd;
qd.MiscFlags = 0;
qd.Query = D3D11_QUERY_EVENT;
if (FAILED(m_device->CreateQuery(&qd, &this->m_eventQuery)))
{
DEBUG_ERROR("Failed to create event query");
DeInitialize();
return false;
}
m_initialized = true;
return true;
}
void DXGI::DeInitialize()
{
if (m_eventQuery)
m_eventQuery.Release();
if (m_releaseFrame)
{
m_releaseFrame = false;
@ -303,6 +281,7 @@ GrabStatus DXGI::GrabFrame(FrameInfo & frame)
{
m_releaseFrame = false;
status = m_dup->ReleaseFrame();
switch (status)
{
case S_OK:
@ -325,8 +304,8 @@ GrabStatus DXGI::GrabFrame(FrameInfo & frame)
continue;
// send the last frame again if we timeout to prevent the client stalling on restart
frame.width = m_desc.Width;
frame.height = m_desc.Height;
frame.width = m_width;
frame.height = m_height;
frame.pitch = m_mapping.RowPitch;
frame.stride = m_mapping.RowPitch / 4;
@ -445,22 +424,32 @@ GrabStatus DXGI::GrabFrame(FrameInfo & frame)
return GRAB_STATUS_ERROR;
}
src->GetDesc(&m_desc);
m_deviceContext->CopyResource(m_texture, src);
m_deviceContext->End(m_eventQuery);
src.Release();
m_width = m_desc.Width;
m_height = m_desc.Height;
if (m_surfaceMapped)
{
m_deviceContext->Unmap(m_texture, 0);
m_surfaceMapped = false;
}
frame.width = m_desc.Width;
frame.height = m_desc.Height;
status = m_deviceContext->Map(m_texture, 0, D3D11_MAP_READ, 0, &m_mapping);
if (FAILED(status))
{
DEBUG_ERROR("Failed to map the texture: %08x", (int)status);
DeInitialize();
return GRAB_STATUS_ERROR;
}
m_surfaceMapped = true;
frame.width = m_width;
frame.height = m_height;
frame.pitch = m_mapping.RowPitch;
frame.stride = m_mapping.RowPitch / 4;
unsigned int size = m_height * m_mapping.RowPitch;
// wait for the copy to complete before trying to perform the copy
while(S_FALSE == m_deviceContext->GetData(m_eventQuery, NULL, 0, 0)) {}
// while(S_FALSE == m_deviceContext->GetData(m_eventQuery, NULL, 0, 0)) {}
memcpySSE(frame.buffer, m_mapping.pData, size < frame.bufferSize ? size : frame.bufferSize);
return GRAB_STATUS_OK;

3
host/Capture/DXGI.h
View file

@ -32,7 +32,6 @@ _COM_SMARTPTR_TYPEDEF(IDXGIFactory1 , __uuidof(IDXGIFactory1 ));
_COM_SMARTPTR_TYPEDEF(ID3D11Device , __uuidof(ID3D11Device ));
_COM_SMARTPTR_TYPEDEF(ID3D11DeviceContext , __uuidof(ID3D11DeviceContext ));
_COM_SMARTPTR_TYPEDEF(IDXGIDevice , __uuidof(IDXGIDevice ));
_COM_SMARTPTR_TYPEDEF(ID3D11Query , __uuidof(ID3D11Query ));
_COM_SMARTPTR_TYPEDEF(IDXGIOutput1 , __uuidof(IDXGIOutput1 ));
_COM_SMARTPTR_TYPEDEF(IDXGIOutput , __uuidof(IDXGIOutput ));
_COM_SMARTPTR_TYPEDEF(IDXGIAdapter1 , __uuidof(IDXGIAdapter1 ));
@ -84,8 +83,6 @@ namespace Capture
IDXGIOutputDuplicationPtr m_dup;
bool m_releaseFrame;
ID3D11Texture2DPtr m_texture;
D3D11_TEXTURE2D_DESC m_desc;
ID3D11QueryPtr m_eventQuery;
D3D11_MAPPED_SUBRESOURCE m_mapping;
bool m_surfaceMapped;
BYTE * m_pointer;