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d3d11: Disable packed and subsampled YUV formats

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Direct3D11 sampler doesn't support them very well, and conversion
outputs usually result in poor visual quality with our shader code.
Should disable support for such formats for now

Part-of: <https://gitlab.freedesktop.org/gstreamer/gst-plugins-bad/-/merge_requests/2344>
This commit is contained in:
Seungha Yang 2021-06-21 00:19:17 +09:00
parent 0f8631c476
commit 554855f87f
3 changed files with 18 additions and 3 deletions
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17
gst-libs/gst/d3d11/gstd3d11device.cpp
View file

@ -95,7 +95,7 @@ enum
#define DEFAULT_ADAPTER 0
#define DEFAULT_CREATE_FLAGS 0
#define GST_D3D11_N_FORMATS 29
#define GST_D3D11_N_FORMATS 25
struct _GstD3D11DevicePrivate
{
@ -547,6 +547,20 @@ gst_d3d11_device_setup_format_table (GstD3D11Device * self)
priv->format_table[n_formats].dxgi_format = DXGI_FORMAT_UNKNOWN;
n_formats++;
/* FIXME: d3d11 sampler doesn't support packed-and-subsampled formats
* very well (and it's really poorly documented).
* As per observation, d3d11 samplers seems to be dropping the second
* Y componet from "Y0-U0-Y1-V0" pair which results in bad visual quality
* than 4:2:0 subsampled formats. We should revisit this later */
/* TODO: The best would be using d3d11 compute shader to handle this kinds of
* samples but comute shader is not implemented yet by us.
*
* Another simple approach is using d3d11 video processor,
* but capability will be very device dependent because it depends on
* GPU vendor's driver implementation, moreover, software fallback does
* not support d3d11 video processor. So it's not reliable in this case */
#if 0
/* NOTE: packted yuv 4:2:2 YUY2, UYVY, and VYUY formats are not natively
* supported render target view formats
* (i.e., cannot be output format of shader pipeline) */
@ -586,6 +600,7 @@ gst_d3d11_device_setup_format_table (GstD3D11Device * self)
else
priv->format_table[n_formats].dxgi_format = DXGI_FORMAT_UNKNOWN;
n_formats++;
#endif
priv->format_table[n_formats].format = GST_VIDEO_FORMAT_Y410;
priv->format_table[n_formats].resource_format[0] =

2
gst-libs/gst/d3d11/gstd3d11format.h
View file

@ -33,7 +33,7 @@ G_BEGIN_DECLS
"GRAY8, GRAY16_LE"
#define GST_D3D11_EXTRA_IN_FORMATS \
"YUY2, UYVY, VYUY, Y210, Y410"
"Y410"
#define GST_D3D11_SINK_FORMATS \
"{ " GST_D3D11_COMMON_FORMATS " ," GST_D3D11_EXTRA_IN_FORMATS " }"

2
tests/check/elements/d3d11colorconvert.c
View file

@ -56,7 +56,7 @@ static const gchar *RGB_FORMATS[] = {
};
static const gchar *PACKED_YUV_FORMATS[] = {
"YUY2", "UYVY", "VYUY", "Y210", "Y410",
"Y410",
};
static const gchar *GRAY_FORMATS[] = {