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[host] dxgi: performance improvements

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This commit is contained in:
Geoffrey McRae 2017-12-29 07:01:13 +11:00
parent 2f2813037b
commit 2d746cbfd4
1 changed files with 7 additions and 10 deletions
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17
host/Capture/DXGI.cpp
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@ -265,7 +265,6 @@ void DXGI::WaitForDesktop()
GrabStatus DXGI::GrabFrame(FrameInfo & frame)
{
TRACE;
if (!m_initialized)
return GRAB_STATUS_ERROR;
@ -303,6 +302,7 @@ GrabStatus DXGI::GrabFrame(FrameInfo & frame)
{
if (!m_surfaceMapped)
continue;
m_memcpy.Wake();
// send the last frame again if we timeout to prevent the client stalling on restart
frame.width = m_width;
@ -416,6 +416,10 @@ GrabStatus DXGI::GrabFrame(FrameInfo & frame)
return GRAB_STATUS_ERROR;
}
TRACE_START("DXGI Memory Copy");
// wake up the copy threads
m_memcpy.Wake();
ID3D11Texture2DPtr src(res);
res.Release();
if (!src)
@ -427,12 +431,6 @@ GrabStatus DXGI::GrabFrame(FrameInfo & frame)
m_deviceContext->CopyResource(m_texture, src);
src.Release();
if (m_surfaceMapped)
{
m_deviceContext->Unmap(m_texture, 0);
m_surfaceMapped = false;
}
status = m_deviceContext->Map(m_texture, 0, D3D11_MAP_READ, 0, &m_mapping);
if (FAILED(status))
{
@ -445,10 +443,9 @@ GrabStatus DXGI::GrabFrame(FrameInfo & frame)
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;
frame.stride = m_mapping.RowPitch >> 2;
TRACE_START("DXGI Memory Copy");
const unsigned int size = m_height * m_mapping.RowPitch;
m_memcpy.Copy(frame.buffer, m_mapping.pData, size < frame.bufferSize ? size : frame.bufferSize);
TRACE_END;