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d3d11videosink: Use GPU memory copy if possible

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Even if fallback buffer is required (e.g., shader resource view is unavailable),
use direct GPU memory copy if possible. It must be much faster than
system memory copy approach.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gst-plugins-bad/-/merge_requests/1339>
This commit is contained in:
Seungha Yang 2020-06-12 20:11:29 +09:00 committed by GStreamer Merge Bot
parent 73b39407a6
commit b5c8889d4f
1 changed files with 51 additions and 2 deletions
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53
sys/d3d11/gstd3d11videosink.c
View file

@ -784,6 +784,45 @@ invalid_buffer:
}
}
static gboolean
gst_d3d11_video_sink_copy_d3d11_to_d3d11 (GstD3D11VideoSink * self,
GstBuffer * inbuf, GstBuffer * outbuf)
{
gint i;
ID3D11DeviceContext *context_handle =
gst_d3d11_device_get_device_context_handle (self->device);
g_return_val_if_fail (gst_buffer_n_memory (inbuf) ==
gst_buffer_n_memory (outbuf), FALSE);
GST_LOG_OBJECT (self, "Copy to fallback buffer using device memory copy");
gst_d3d11_device_lock (self->device);
for (i = 0; i < gst_buffer_n_memory (inbuf); i++) {
GstD3D11Memory *in_mem =
(GstD3D11Memory *) gst_buffer_peek_memory (inbuf, i);
GstD3D11Memory *out_mem =
(GstD3D11Memory *) gst_buffer_peek_memory (outbuf, i);
D3D11_BOX src_box;
/* input buffer might be larger than render size */
src_box.left = 0;
src_box.top = 0;
src_box.front = 0;
src_box.back = 1;
src_box.right = out_mem->desc.Width;
src_box.bottom = out_mem->desc.Height;
ID3D11DeviceContext_CopySubresourceRegion (context_handle,
(ID3D11Resource *) out_mem->texture, 0, 0, 0, 0,
(ID3D11Resource *) in_mem->texture, in_mem->subresource_index,
&src_box);
}
gst_d3d11_device_unlock (self->device);
return TRUE;
}
static GstFlowReturn
gst_d3d11_video_sink_show_frame (GstVideoSink * sink, GstBuffer * buf)
{
@ -793,6 +832,7 @@ gst_d3d11_video_sink_show_frame (GstVideoSink * sink, GstBuffer * buf)
GstVideoRectangle rect = { 0, };
GstBuffer *render_buf;
gboolean need_unref = FALSE;
gboolean do_device_copy = TRUE;
gint i;
render_buf = buf;
@ -805,6 +845,7 @@ gst_d3d11_video_sink_show_frame (GstVideoSink * sink, GstBuffer * buf)
if (!gst_is_d3d11_memory (mem)) {
GST_LOG_OBJECT (sink, "not a d3d11 memory, need fallback");
render_buf = NULL;
do_device_copy = FALSE;
break;
}
@ -812,6 +853,7 @@ gst_d3d11_video_sink_show_frame (GstVideoSink * sink, GstBuffer * buf)
if (dmem->device != self->device) {
GST_LOG_OBJECT (sink, "different d3d11 device, need fallback");
render_buf = NULL;
do_device_copy = FALSE;
break;
}
@ -834,7 +876,7 @@ gst_d3d11_video_sink_show_frame (GstVideoSink * sink, GstBuffer * buf)
GST_LOG_OBJECT (sink,
"shader resource view is unavailable, need fallback");
render_buf = NULL;
break;
/* keep run loop in order to upload staging memory to device memory */
}
}
@ -860,7 +902,14 @@ gst_d3d11_video_sink_show_frame (GstVideoSink * sink, GstBuffer * buf)
}
}
if (!gst_d3d11_video_sink_upload_frame (self, buf, render_buf)) {
if (do_device_copy) {
if (!gst_d3d11_video_sink_copy_d3d11_to_d3d11 (self, buf, render_buf)) {
GST_ERROR_OBJECT (self, "cannot copy frame");
gst_buffer_unref (render_buf);
return GST_FLOW_ERROR;
}
} else if (!gst_d3d11_video_sink_upload_frame (self, buf, render_buf)) {
GST_ERROR_OBJECT (self, "cannot upload frame");
gst_buffer_unref (render_buf);