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d3d11screencapturesrc: Use keyed mutex instead of fence

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D3D11 runtime might not support ID3D11Fence, and if so GstD3D11Fence
abstraction will use ID3D11Query instead. However, since the ID3D11Query
requires busy waiting, keyed mutex is better approach.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/4094>
This commit is contained in:
Seungha Yang 2023-03-02 02:51:21 +09:00
parent ac869214ad
commit 95ca40c4ab
1 changed files with 31 additions and 16 deletions
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47
subprojects/gst-plugins-bad/sys/d3d11/gstd3d11dxgicapture.cpp
View file

@ -231,7 +231,6 @@ class D3D11DesktopDupObject
public:
D3D11DesktopDupObject ()
: device_(nullptr)
, fence_(nullptr)
, metadata_buffer_(nullptr)
, metadata_buffer_size_(0)
, vertex_buffer_(nullptr)
@ -247,7 +246,11 @@ public:
if (vertex_buffer_)
delete[] vertex_buffer_;
gst_clear_d3d11_fence (&fence_);
if (keyed_mutex_) {
keyed_mutex_->ReleaseSync (0);
keyed_mutex_ = nullptr;
}
gst_clear_object (&device_);
}
@ -282,7 +285,7 @@ public:
D3D11_BIND_RENDER_TARGET | D3D11_BIND_SHADER_RESOURCE;
texture_desc.CPUAccessFlags = 0;
/* source element may hold different d3d11 device object */
texture_desc.MiscFlags = D3D11_RESOURCE_MISC_SHARED;
texture_desc.MiscFlags = D3D11_RESOURCE_MISC_SHARED_KEYEDMUTEX;
hr = device_handle->CreateTexture2D (&texture_desc,
nullptr, &shared_texture_);
@ -291,6 +294,21 @@ public:
return GST_FLOW_ERROR;
}
hr = shared_texture_.As (&keyed_mutex_);
if (!gst_d3d11_result (hr, device)) {
GST_ERROR_OBJECT (device, "Couldn't get keyed mutex interface");
shared_texture_ = nullptr;
return GST_FLOW_ERROR;
}
hr = keyed_mutex_->AcquireSync (0, INFINITE);
if (hr != S_OK) {
GST_ERROR_OBJECT (device, "Couldn't acquire sync");
keyed_mutex_ = nullptr;
shared_texture_ = nullptr;
return GST_FLOW_ERROR;
}
device_ = (GstD3D11Device *) gst_object_ref (device);
return GST_FLOW_OK;
@ -547,8 +565,8 @@ public:
{
ID3D11DeviceContext *context_handle = nullptr;
ComPtr <ID3D11Texture2D> tex;
ComPtr < IDXGIKeyedMutex > other_keyed_mutex;
HRESULT hr;
gboolean is_shared = FALSE;
context_handle = gst_d3d11_device_get_device_context_handle (device);
@ -574,24 +592,21 @@ public:
if (!gst_d3d11_result (hr, device))
return GST_FLOW_ERROR;
if (fence_ && fence_->device != device)
gst_clear_d3d11_fence (&fence_);
if (!fence_)
fence_ = gst_d3d11_device_create_fence (device);
if (!fence_)
hr = tex.As (&other_keyed_mutex);
if (!gst_d3d11_result (hr, device))
return GST_FLOW_ERROR;
is_shared = TRUE;
/* release sync from our device, and acquire for other device */
keyed_mutex_->ReleaseSync (0);
other_keyed_mutex->AcquireSync (0, INFINITE);
}
context_handle->CopySubresourceRegion (texture, 0, 0, 0, 0,
tex.Get(), 0, cropBox);
if (is_shared) {
if (!gst_d3d11_fence_signal (fence_) || !gst_d3d11_fence_wait (fence_))
return GST_FLOW_ERROR;
if (other_keyed_mutex) {
other_keyed_mutex->ReleaseSync (0);
keyed_mutex_->AcquireSync (0, INFINITE);
}
return GST_FLOW_OK;
@ -1472,9 +1487,9 @@ private:
PTR_INFO ptr_info_;
DXGI_OUTDUPL_DESC output_desc_;
GstD3D11Device * device_;
GstD3D11Fence * fence_;
ComPtr<ID3D11Texture2D> shared_texture_;
ComPtr<IDXGIKeyedMutex> keyed_mutex_;
ComPtr<ID3D11RenderTargetView> rtv_;
ComPtr<ID3D11Texture2D> move_texture_;
ComPtr<ID3D11VertexShader> vs_;