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gstreamer/subprojects/gst-plugins-bad/sys/d3d12/gstd3d12converter-builder.cpp
Seungha Yang 660f2d7d27 d3d12: Add convert element 
Implement converter object with convert element

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/5870>
2023-12-29 14:39:00 +00:00

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/* GStreamer
* Copyright (C) 2023 Seungha Yang <seungha@centricular.com>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
* Boston, MA 02110-1301, USA.
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include "gstd3d12.h"
#include "gstd3d12converter-builder.h"
#include <directx/d3dx12.h>
#include <map>
#include <mutex>
#include <string>
#include <utility>
#include <memory>
#include "PSMainConverter.h"
#include "VSMain_converter.h"
GST_DEBUG_CATEGORY_EXTERN (gst_d3d12_converter_debug);
#define GST_CAT_DEFAULT gst_d3d12_converter_debug
/* *INDENT-OFF* */
using namespace Microsoft::WRL;
enum class PS_OUTPUT
{
PACKED,
LUMA,
CHROMA,
CHROMA_PLANAR,
PLANAR,
PLANAR_FULL,
};
static const std::string
ps_output_to_string (PS_OUTPUT output)
{
switch (output) {
case PS_OUTPUT::PACKED:
return "PS_OUTPUT_PACKED";
case PS_OUTPUT::LUMA:
return "PS_OUTPUT_LUMA";
case PS_OUTPUT::CHROMA:
return "PS_OUTPUT_CHROMA";
case PS_OUTPUT::CHROMA_PLANAR:
return "PS_OUTPUT_CHROMA_PLANAR";
case PS_OUTPUT::PLANAR:
return "PS_OUTPUT_PLANAR";
case PS_OUTPUT::PLANAR_FULL:
return "PS_OUTPUT_PLANAR_FULL";
default:
g_assert_not_reached ();
break;
}
return "";
}
static guint
ps_output_get_num_rtv (PS_OUTPUT output)
{
switch (output) {
case PS_OUTPUT::PACKED:
case PS_OUTPUT::LUMA:
case PS_OUTPUT::CHROMA:
return 1;
case PS_OUTPUT::CHROMA_PLANAR:
return 2;
case PS_OUTPUT::PLANAR:
return 3;
case PS_OUTPUT::PLANAR_FULL:
return 4;
default:
g_assert_not_reached ();
break;
}
return 0;
}
static std::string
make_input (GstVideoFormat format, gboolean premul)
{
switch (format) {
case GST_VIDEO_FORMAT_RGBA:
case GST_VIDEO_FORMAT_RGBA64_LE:
case GST_VIDEO_FORMAT_RGB10A2_LE:
case GST_VIDEO_FORMAT_BGRA:
if (premul)
return "RGBAPremul";
return "RGBA";
case GST_VIDEO_FORMAT_RGBx:
case GST_VIDEO_FORMAT_BGRx:
return "RGBx";
case GST_VIDEO_FORMAT_ARGB:
return "ARGB";
case GST_VIDEO_FORMAT_xRGB:
return "xRGB";
case GST_VIDEO_FORMAT_ABGR:
return "ABGR";
case GST_VIDEO_FORMAT_xBGR:
return "xBGR";
case GST_VIDEO_FORMAT_VUYA:
return "VUYA";
case GST_VIDEO_FORMAT_AYUV:
case GST_VIDEO_FORMAT_AYUV64:
return "AYUV";
case GST_VIDEO_FORMAT_NV12:
case GST_VIDEO_FORMAT_P010_10LE:
case GST_VIDEO_FORMAT_P012_LE:
case GST_VIDEO_FORMAT_P016_LE:
return "NV12";
case GST_VIDEO_FORMAT_NV21:
return "NV21";
case GST_VIDEO_FORMAT_I420:
case GST_VIDEO_FORMAT_Y42B:
case GST_VIDEO_FORMAT_Y444:
case GST_VIDEO_FORMAT_Y444_16LE:
return "I420";
case GST_VIDEO_FORMAT_YV12:
return "YV12";
case GST_VIDEO_FORMAT_I420_10LE:
case GST_VIDEO_FORMAT_I422_10LE:
case GST_VIDEO_FORMAT_Y444_10LE:
return "I420_10";
case GST_VIDEO_FORMAT_I420_12LE:
case GST_VIDEO_FORMAT_I422_12LE:
case GST_VIDEO_FORMAT_Y444_12LE:
return "I420_12";
case GST_VIDEO_FORMAT_Y410:
return "Y410";
case GST_VIDEO_FORMAT_GRAY8:
case GST_VIDEO_FORMAT_GRAY16_LE:
return "GRAY";
case GST_VIDEO_FORMAT_RGBP:
return "RGBP";
case GST_VIDEO_FORMAT_BGRP:
return "BGRP";
case GST_VIDEO_FORMAT_GBR:
case GST_VIDEO_FORMAT_GBR_16LE:
return "GBR";
case GST_VIDEO_FORMAT_GBR_10LE:
return "GBR_10";
case GST_VIDEO_FORMAT_GBR_12LE:
return "GBR_12";
case GST_VIDEO_FORMAT_GBRA:
return "GBRA";
case GST_VIDEO_FORMAT_GBRA_10LE:
return "GBRA_10";
case GST_VIDEO_FORMAT_GBRA_12LE:
return "GBRA_12";
case GST_VIDEO_FORMAT_Y412_LE:
return "Y412";
case GST_VIDEO_FORMAT_BGR10A2_LE:
return "BGR10A2";
case GST_VIDEO_FORMAT_BGRA64_LE:
return "BGRA64";
case GST_VIDEO_FORMAT_RBGA:
return "RBGA";
default:
g_assert_not_reached ();
break;
}
return "";
}
static std::vector<std::pair<PS_OUTPUT, std::string>>
make_output (GstVideoFormat format, gboolean premul)
{
std::vector<std::pair<PS_OUTPUT, std::string>> ret;
switch (format) {
case GST_VIDEO_FORMAT_RGBA:
case GST_VIDEO_FORMAT_RGBA64_LE:
case GST_VIDEO_FORMAT_RGB10A2_LE:
case GST_VIDEO_FORMAT_BGRA:
if (premul)
ret.push_back(std::make_pair(PS_OUTPUT::PACKED, "RGBAPremul"));
else
ret.push_back(std::make_pair(PS_OUTPUT::PACKED, "RGBA"));
break;
case GST_VIDEO_FORMAT_RGBx:
case GST_VIDEO_FORMAT_BGRx:
ret.push_back(std::make_pair(PS_OUTPUT::PACKED, "RGBx"));
break;
case GST_VIDEO_FORMAT_ARGB:
ret.push_back(std::make_pair(PS_OUTPUT::PACKED, "ARGB"));
break;
case GST_VIDEO_FORMAT_xRGB:
ret.push_back(std::make_pair(PS_OUTPUT::PACKED, "xRGB"));
break;
case GST_VIDEO_FORMAT_ABGR:
ret.push_back(std::make_pair(PS_OUTPUT::PACKED, "ABGR"));
break;
case GST_VIDEO_FORMAT_xBGR:
ret.push_back(std::make_pair(PS_OUTPUT::PACKED, "xBGR"));
break;
case GST_VIDEO_FORMAT_VUYA:
ret.push_back(std::make_pair(PS_OUTPUT::PACKED, "VUYA"));
break;
case GST_VIDEO_FORMAT_AYUV:
case GST_VIDEO_FORMAT_AYUV64:
ret.push_back(std::make_pair(PS_OUTPUT::PACKED, "AYUV"));
break;
case GST_VIDEO_FORMAT_NV12:
case GST_VIDEO_FORMAT_P010_10LE:
case GST_VIDEO_FORMAT_P012_LE:
case GST_VIDEO_FORMAT_P016_LE:
ret.push_back(std::make_pair(PS_OUTPUT::LUMA, "Luma"));
ret.push_back(std::make_pair(PS_OUTPUT::CHROMA, "ChromaNV12"));
break;
case GST_VIDEO_FORMAT_NV21:
ret.push_back(std::make_pair(PS_OUTPUT::LUMA, "Luma"));
ret.push_back(std::make_pair(PS_OUTPUT::CHROMA, "ChromaNV21"));
break;
case GST_VIDEO_FORMAT_I420:
case GST_VIDEO_FORMAT_Y42B:
ret.push_back(std::make_pair(PS_OUTPUT::LUMA, "Luma"));
ret.push_back(std::make_pair(PS_OUTPUT::CHROMA_PLANAR, "ChromaI420"));
break;
case GST_VIDEO_FORMAT_Y444:
case GST_VIDEO_FORMAT_Y444_16LE:
ret.push_back(std::make_pair(PS_OUTPUT::PLANAR, "Y444"));
break;
case GST_VIDEO_FORMAT_YV12:
ret.push_back(std::make_pair(PS_OUTPUT::LUMA, "Luma"));
ret.push_back(std::make_pair(PS_OUTPUT::CHROMA_PLANAR, "ChromaYV12"));
break;
case GST_VIDEO_FORMAT_I420_10LE:
case GST_VIDEO_FORMAT_I422_10LE:
ret.push_back(std::make_pair(PS_OUTPUT::LUMA, "Luma_10"));
ret.push_back(std::make_pair(PS_OUTPUT::CHROMA_PLANAR, "ChromaI420_10"));
break;
case GST_VIDEO_FORMAT_Y444_10LE:
ret.push_back(std::make_pair(PS_OUTPUT::PLANAR, "Y444_10"));
break;
case GST_VIDEO_FORMAT_I420_12LE:
case GST_VIDEO_FORMAT_I422_12LE:
ret.push_back(std::make_pair(PS_OUTPUT::LUMA, "Luma_12"));
ret.push_back(std::make_pair(PS_OUTPUT::CHROMA_PLANAR, "ChromaI420_12"));
break;
case GST_VIDEO_FORMAT_Y444_12LE:
ret.push_back(std::make_pair(PS_OUTPUT::PLANAR, "Y444_12"));
break;
case GST_VIDEO_FORMAT_GRAY8:
case GST_VIDEO_FORMAT_GRAY16_LE:
ret.push_back(std::make_pair(PS_OUTPUT::LUMA, "Luma"));
break;
case GST_VIDEO_FORMAT_RGBP:
ret.push_back(std::make_pair(PS_OUTPUT::PLANAR, "RGBP"));
break;
case GST_VIDEO_FORMAT_BGRP:
ret.push_back(std::make_pair(PS_OUTPUT::PLANAR, "BGRP"));
break;
case GST_VIDEO_FORMAT_GBR:
case GST_VIDEO_FORMAT_GBR_16LE:
ret.push_back(std::make_pair(PS_OUTPUT::PLANAR, "GBR"));
break;
case GST_VIDEO_FORMAT_GBR_10LE:
ret.push_back(std::make_pair(PS_OUTPUT::PLANAR, "GBR_10"));
break;
case GST_VIDEO_FORMAT_GBR_12LE:
ret.push_back(std::make_pair(PS_OUTPUT::PLANAR, "GBR_12"));
break;
case GST_VIDEO_FORMAT_GBRA:
ret.push_back(std::make_pair(PS_OUTPUT::PLANAR_FULL, "GBRA"));
break;
case GST_VIDEO_FORMAT_GBRA_10LE:
ret.push_back(std::make_pair(PS_OUTPUT::PLANAR_FULL, "GBRA_10"));
break;
case GST_VIDEO_FORMAT_GBRA_12LE:
ret.push_back(std::make_pair(PS_OUTPUT::PLANAR_FULL, "GBRA_12"));
break;
case GST_VIDEO_FORMAT_RBGA:
ret.push_back(std::make_pair(PS_OUTPUT::PACKED, "RBGA"));
break;
default:
g_assert_not_reached ();
break;
}
return ret;
}
PixelShaderBlobList
gst_d3d12_get_converter_pixel_shader_blob (GstVideoFormat in_format,
GstVideoFormat out_format, gboolean in_premul, gboolean out_premul,
CONVERT_TYPE type)
{
auto input = make_input (in_format, in_premul);
auto output = make_output (out_format, out_premul);
std::string conv_type;
PixelShaderBlobList ret;
static std::mutex cache_lock;
static std::map<std::string, std::shared_ptr<PixelShaderBlob>> ps_cache;
switch (type) {
case CONVERT_TYPE::IDENTITY:
conv_type = "Identity";
break;
case CONVERT_TYPE::SIMPLE:
conv_type = "Simple";
break;
case CONVERT_TYPE::RANGE:
conv_type = "Range";
break;
case CONVERT_TYPE::GAMMA:
conv_type = "Gamma";
break;
case CONVERT_TYPE::PRIMARY:
conv_type = "Primary";
break;
}
for (const auto & it : output) {
std::string entry_point = "PSMain_" + input + "_" + conv_type + "_" +
it.second;
std::shared_ptr<PixelShaderBlob> source;
std::lock_guard<std::mutex> lk (cache_lock);
auto cached = ps_cache.find(entry_point);
if (cached != ps_cache.end()) {
source = cached->second;
} else {
auto precompiled = precompiled_bytecode.find (entry_point);
if (precompiled == precompiled_bytecode.end ()) {
GST_ERROR ("Couldn't find precompiled %s", entry_point.c_str ());
ret.clear ();
return ret;
}
source = std::make_shared<PixelShaderBlob> ();
source->bytecode.pShaderBytecode = precompiled->second.first;
source->bytecode.BytecodeLength = precompiled->second.second;
source->num_rtv = ps_output_get_num_rtv (it.first);
ps_cache[entry_point] = source;
}
ret.push_back (*source);
}
return ret;
}
/* *INDENT-ON* */
HRESULT
gst_d3d12_get_converter_vertex_shader_blob (D3D12_SHADER_BYTECODE * vs,
D3D12_INPUT_ELEMENT_DESC input_desc[2])
{
input_desc[0].SemanticName = "POSITION";
input_desc[0].SemanticIndex = 0;
input_desc[0].Format = DXGI_FORMAT_R32G32B32_FLOAT;
input_desc[0].InputSlot = 0;
input_desc[0].AlignedByteOffset = D3D12_APPEND_ALIGNED_ELEMENT;
input_desc[0].InputSlotClass = D3D12_INPUT_CLASSIFICATION_PER_VERTEX_DATA;
input_desc[0].InstanceDataStepRate = 0;
input_desc[1].SemanticName = "TEXCOORD";
input_desc[1].SemanticIndex = 0;
input_desc[1].Format = DXGI_FORMAT_R32G32_FLOAT;
input_desc[1].InputSlot = 0;
input_desc[1].AlignedByteOffset = D3D12_APPEND_ALIGNED_ELEMENT;
input_desc[1].InputSlotClass = D3D12_INPUT_CLASSIFICATION_PER_VERTEX_DATA;
input_desc[1].InstanceDataStepRate = 0;
vs->BytecodeLength = sizeof (g_VSMain_converter);
vs->pShaderBytecode = g_VSMain_converter;
return S_OK;
}
/* root signature
*
* +-----+---------+--------------+
* | RS | size in | |
* | idx | DWORD | |
* +-----+---------+--------------+
* | 0 | 1 | table (SRV) |
* +-----+---------+--------------+
* | 1 | 16 | VS matrix |
* +-----+---------+--------------+
* | 2 | 1 | PS alpha |
* +-----+---------+--------------+
* | 3 | 2 | PS CBV |
* +-----+---------+--------------+
*/
static const D3D12_STATIC_SAMPLER_DESC static_sampler_desc_ = {
D3D12_FILTER_MIN_MAG_LINEAR_MIP_POINT,
D3D12_TEXTURE_ADDRESS_MODE_CLAMP,
D3D12_TEXTURE_ADDRESS_MODE_CLAMP,
D3D12_TEXTURE_ADDRESS_MODE_CLAMP,
0,
1,
D3D12_COMPARISON_FUNC_ALWAYS,
D3D12_STATIC_BORDER_COLOR_OPAQUE_BLACK,
0,
D3D12_FLOAT32_MAX,
0,
0,
D3D12_SHADER_VISIBILITY_PIXEL
};
static const D3D12_ROOT_SIGNATURE_FLAGS rs_flags_ =
D3D12_ROOT_SIGNATURE_FLAG_ALLOW_INPUT_ASSEMBLER_INPUT_LAYOUT |
D3D12_ROOT_SIGNATURE_FLAG_DENY_HULL_SHADER_ROOT_ACCESS |
D3D12_ROOT_SIGNATURE_FLAG_DENY_DOMAIN_SHADER_ROOT_ACCESS |
D3D12_ROOT_SIGNATURE_FLAG_DENY_GEOMETRY_SHADER_ROOT_ACCESS |
D3D12_ROOT_SIGNATURE_FLAG_DENY_AMPLIFICATION_SHADER_ROOT_ACCESS |
D3D12_ROOT_SIGNATURE_FLAG_DENY_MESH_SHADER_ROOT_ACCESS;
ConverterRootSignature::ConverterRootSignature (D3D_ROOT_SIGNATURE_VERSION
version, UINT num_srv, D3D12_FILTER filter, bool build_lut)
{
D3D12_VERSIONED_ROOT_SIGNATURE_DESC desc = { };
num_srv_ = num_srv;
have_lut_ = build_lut;
std::vector < D3D12_STATIC_SAMPLER_DESC > static_sampler;
D3D12_STATIC_SAMPLER_DESC sampler_desc = static_sampler_desc_;
sampler_desc.Filter = filter;
if (filter == D3D12_FILTER_ANISOTROPIC)
sampler_desc.MaxAnisotropy = 16;
static_sampler.push_back (sampler_desc);
if (build_lut) {
sampler_desc = static_sampler_desc_;
sampler_desc.ShaderRegister = 1;
static_sampler.push_back (sampler_desc);
}
std::vector < D3D12_DESCRIPTOR_RANGE1 > range_v1_1;
std::vector < D3D12_ROOT_PARAMETER1 > param_list_v1_1;
std::vector < D3D12_DESCRIPTOR_RANGE > range_v1_0;
std::vector < D3D12_ROOT_PARAMETER > param_list_v1_0;
if (version == D3D_ROOT_SIGNATURE_VERSION_1_1) {
CD3DX12_ROOT_PARAMETER1 param;
ps_srv_ = 0;
for (UINT i = 0; i < num_srv; i++) {
range_v1_1.push_back (CD3DX12_DESCRIPTOR_RANGE1
(D3D12_DESCRIPTOR_RANGE_TYPE_SRV, 1, i, 0,
D3D12_DESCRIPTOR_RANGE_FLAG_DESCRIPTORS_VOLATILE |
D3D12_DESCRIPTOR_RANGE_FLAG_DATA_VOLATILE));
}
if (build_lut) {
range_v1_1.push_back (CD3DX12_DESCRIPTOR_RANGE1
(D3D12_DESCRIPTOR_RANGE_TYPE_SRV, 1, 4, 0,
D3D12_DESCRIPTOR_RANGE_FLAG_DESCRIPTORS_VOLATILE |
D3D12_DESCRIPTOR_RANGE_FLAG_DATA_STATIC_WHILE_SET_AT_EXECUTE));
range_v1_1.push_back (CD3DX12_DESCRIPTOR_RANGE1
(D3D12_DESCRIPTOR_RANGE_TYPE_SRV, 1, 5, 0,
D3D12_DESCRIPTOR_RANGE_FLAG_DESCRIPTORS_VOLATILE |
D3D12_DESCRIPTOR_RANGE_FLAG_DATA_STATIC_WHILE_SET_AT_EXECUTE));
}
param.InitAsDescriptorTable (range_v1_1.size (),
range_v1_1.data (), D3D12_SHADER_VISIBILITY_PIXEL);
param_list_v1_1.push_back (param);
/* VS root const, maybe updated */
vs_root_const_ = (UINT) param_list_v1_1.size ();
param.InitAsConstants (16, 0, 1, D3D12_SHADER_VISIBILITY_VERTEX);
param_list_v1_1.push_back (param);
/* PS alpha constant value, maybe updated */
ps_root_const_ = (UINT) param_list_v1_1.size ();
param.InitAsConstants (1, 0, 0, D3D12_SHADER_VISIBILITY_PIXEL);
param_list_v1_1.push_back (param);
/* PS CBV, this is static */
ps_cbv_ = (UINT) param_list_v1_1.size ();
param.InitAsConstantBufferView (1, 0,
D3D12_ROOT_DESCRIPTOR_FLAG_DATA_STATIC_WHILE_SET_AT_EXECUTE,
D3D12_SHADER_VISIBILITY_PIXEL);
param_list_v1_1.push_back (param);
CD3DX12_VERSIONED_ROOT_SIGNATURE_DESC::Init_1_1 (desc,
param_list_v1_1.size (), param_list_v1_1.data (),
static_sampler.size (), static_sampler.data (), rs_flags_);
} else {
CD3DX12_ROOT_PARAMETER param;
ps_srv_ = 0;
for (UINT i = 0; i < num_srv; i++) {
range_v1_0.push_back (CD3DX12_DESCRIPTOR_RANGE
(D3D12_DESCRIPTOR_RANGE_TYPE_SRV, 1, i));
}
if (build_lut) {
range_v1_0.push_back (CD3DX12_DESCRIPTOR_RANGE
(D3D12_DESCRIPTOR_RANGE_TYPE_SRV, 1, 4));
range_v1_0.push_back (CD3DX12_DESCRIPTOR_RANGE
(D3D12_DESCRIPTOR_RANGE_TYPE_SRV, 1, 5));
}
param.InitAsDescriptorTable (range_v1_0.size (),
range_v1_0.data (), D3D12_SHADER_VISIBILITY_PIXEL);
param_list_v1_0.push_back (param);
/* VS root const, maybe updated */
vs_root_const_ = (UINT) param_list_v1_0.size ();
param.InitAsConstants (16, 0, 1, D3D12_SHADER_VISIBILITY_VERTEX);
param_list_v1_0.push_back (param);
/* PS alpha constant value, maybe updated */
ps_root_const_ = (UINT) param_list_v1_0.size ();
param.InitAsConstants (1, 0, 0, D3D12_SHADER_VISIBILITY_PIXEL);
param_list_v1_0.push_back (param);
/* PS CBV, this is static */
ps_cbv_ = (UINT) param_list_v1_0.size ();
param.InitAsConstantBufferView (1, 0, D3D12_SHADER_VISIBILITY_PIXEL);
param_list_v1_0.push_back (param);
CD3DX12_VERSIONED_ROOT_SIGNATURE_DESC::Init_1_0 (desc,
param_list_v1_0.size (), param_list_v1_0.data (),
static_sampler.size (), static_sampler.data (), rs_flags_);
}
ComPtr < ID3DBlob > error_blob;
hr_ = D3DX12SerializeVersionedRootSignature (&desc,
D3D_ROOT_SIGNATURE_VERSION_1_1, &blob_, &error_blob);
if (FAILED (hr_)) {
const gchar *error_msg = nullptr;
if (error_blob)
error_msg = (const gchar *) error_blob->GetBufferPointer ();
GST_ERROR ("Couldn't serialize root signature, hr: 0x%x, error detail: %s",
(guint) hr_, GST_STR_NULL (error_msg));
}
}
ConverterRootSignaturePtr
gst_d3d12_get_converter_root_signature (GstD3D12Device * device,
GstVideoFormat in_format, CONVERT_TYPE type, D3D12_FILTER filter)
{
auto info = gst_video_format_get_info (in_format);
auto num_planes = GST_VIDEO_FORMAT_INFO_N_PLANES (info);
bool build_lut = false;
auto device_handle = gst_d3d12_device_get_device_handle (device);
D3D_ROOT_SIGNATURE_VERSION rs_version = D3D_ROOT_SIGNATURE_VERSION_1_1;
D3D12_FEATURE_DATA_ROOT_SIGNATURE feature_data = { };
feature_data.HighestVersion = D3D_ROOT_SIGNATURE_VERSION_1_1;
auto hr = device_handle->CheckFeatureSupport (D3D12_FEATURE_ROOT_SIGNATURE,
&feature_data, sizeof (feature_data));
if (FAILED (hr)) {
rs_version = D3D_ROOT_SIGNATURE_VERSION_1_0;
} else {
GST_INFO_OBJECT (device, "Device supports version 1.1 root signature");
}
if (type == CONVERT_TYPE::GAMMA || type == CONVERT_TYPE::PRIMARY)
build_lut = true;
auto rs = std::make_shared < ConverterRootSignature >
(rs_version, num_planes, filter, build_lut);
if (!rs->IsValid ())
return nullptr;
return rs;
}
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