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d3d11memory: Protect against concurrent access from GPU and CPU to staging texture

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Staging texture does not allow GPU access while it's CPU mapped.
But because we cannot block concurrent READ access by GstMemory design,
additional staging texture is still required.

Fixes: https://gitlab.freedesktop.org/gstreamer/gstreamer/-/issues/1182
Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/2375>
This commit is contained in:
Seungha Yang 2022-05-06 01:46:36 +09:00 committed by GStreamer Marge Bot
parent e0a9a73adf
commit 47ff41bcd2
1 changed files with 2 additions and 8 deletions
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10
subprojects/gst-plugins-bad/gst-libs/gst/d3d11/gstd3d11memory.cpp
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@ -342,7 +342,7 @@ gst_d3d11_memory_upload (GstD3D11Memory * dmem)
GstD3D11MemoryPrivate *priv = dmem->priv;
ID3D11DeviceContext *device_context;
if (!priv->staging || priv->staging == priv->texture ||
if (!priv->staging ||
!GST_MEMORY_FLAG_IS_SET (dmem, GST_D3D11_MEMORY_TRANSFER_NEED_UPLOAD))
return;
@ -358,7 +358,7 @@ gst_d3d11_memory_download (GstD3D11Memory * dmem)
GstD3D11MemoryPrivate *priv = dmem->priv;
ID3D11DeviceContext *device_context;
if (!priv->staging || priv->staging == priv->texture ||
if (!priv->staging ||
!GST_MEMORY_FLAG_IS_SET (dmem, GST_D3D11_MEMORY_TRANSFER_NEED_DOWNLOAD))
return;
@ -1433,12 +1433,6 @@ gst_d3d11_allocator_alloc_wrapped (GstD3D11Allocator * self,
mem->priv->native_type = GST_D3D11_MEMORY_NATIVE_TYPE_TEXTURE_2D;
mem->device = (GstD3D11Device *) gst_object_ref (device);
/* This is staging texture as well */
if (desc->Usage == D3D11_USAGE_STAGING) {
mem->priv->staging = texture;
texture->AddRef ();
}
return GST_MEMORY_CAST (mem);
}