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d3d11window: Don't create swapchain again per caps change

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Creating swapchain is relatively heavy operation. If output dxgi format
is not being chagned, we don't need to destroy and create swachain again.
This commit is contained in:
Seungha Yang 2020-01-30 21:12:31 +09:00 committed by GStreamer Merge Bot
parent c1d2d9171d
commit 2aa9f0bd6c
2 changed files with 11 additions and 4 deletions
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12
sys/d3d11/gstd3d11window.cpp
View file

@ -570,12 +570,15 @@ gst_d3d11_window_prepare (GstD3D11Window * window, guint width, guint height,
swapchain_flags |= DXGI_SWAP_CHAIN_FLAG_ALLOW_TEARING;
}
if (window->swap_chain) {
/* release swapchain if render format is being changed */
gst_d3d11_device_lock (window->device);
if (window->swap_chain &&
window->render_format->dxgi_format != window->dxgi_format) {
gst_d3d11_window_release_resources (window->device, window);
gst_d3d11_device_unlock (window->device);
}
window->dxgi_format = window->render_format->dxgi_format;
window->aspect_ratio_n = aspect_ratio_n;
window->aspect_ratio_d = aspect_ratio_d;
@ -590,14 +593,17 @@ gst_d3d11_window_prepare (GstD3D11Window * window, guint width, guint height,
window->height = height;
klass = GST_D3D11_WINDOW_GET_CLASS (window);
if (!klass->create_swap_chain (window, window->render_format->dxgi_format,
if (!window->swap_chain &&
!klass->create_swap_chain (window, window->dxgi_format,
width, height, swapchain_flags, &window->swap_chain)) {
GST_ERROR_OBJECT (window, "Cannot create swapchain");
g_set_error (error, GST_RESOURCE_ERROR, GST_RESOURCE_ERROR_FAILED,
"Cannot create swapchain");
gst_d3d11_device_unlock (window->device);
return FALSE;
}
gst_d3d11_device_unlock (window->device);
#if (DXGI_HEADER_VERSION >= 4)
{

1
sys/d3d11/gstd3d11window.h
View file

@ -105,6 +105,7 @@ struct _GstD3D11Window
IDXGISwapChain *swap_chain;
ID3D11RenderTargetView *rtv;
ID3D11VideoProcessorOutputView *pov;
DXGI_FORMAT dxgi_format;
GstBuffer *cached_buffer;
gboolean first_present;