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Fluid Internal Parallelism

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- Added new graph compile time argument to specify multiple independent
ROIs (Tiles)
 - Added new "executable" with serial loop other user specified
ROIs(Tiles)
 - refactored graph traversal code into separate function to be called
once
 - added saturate cast to Fluid AddCsimple test kernel
This commit is contained in:
Anton Potapov 2019-07-03 11:35:54 +03:00
parent 097d81363b
commit 97e88bd769
5 changed files with 370 additions and 34 deletions
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10
modules/gapi/include/opencv2/gapi/fluid/gfluidkernel.hpp
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@ -99,12 +99,22 @@ struct GFluidOutputRois
std::vector<cv::gapi::own::Rect> rois;
};
struct GFluidParallelOutputRois
{
std::vector<GFluidOutputRois> parallel_rois;
};
namespace detail
{
template<> struct CompileArgTag<GFluidOutputRois>
{
static const char* tag() { return "gapi.fluid.outputRois"; }
};
template<> struct CompileArgTag<GFluidParallelOutputRois>
{
static const char* tag() { return "gapi.fluid.parallelOutputRois"; }
};
} // namespace detail
namespace detail

137
modules/gapi/src/backends/fluid/gfluidbackend.cpp
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@ -91,7 +91,13 @@ namespace
cv::util::throw_error(std::logic_error("GFluidOutputRois feature supports only one-island graphs"));
auto rois = out_rois.value_or(cv::GFluidOutputRois());
return EPtr{new cv::gimpl::GFluidExecutable(graph, nodes, std::move(rois.rois))};
auto graph_data = fluidExtractInputDataFromGraph(graph, nodes);
const auto parallel_out_rois = cv::gimpl::getCompileArg<cv::GFluidParallelOutputRois>(args);
return parallel_out_rois.has_value() ?
EPtr{new cv::gimpl::GParallelFluidExecutable (graph, graph_data, std::move(parallel_out_rois.value().parallel_rois))}
: EPtr{new cv::gimpl::GFluidExecutable (graph, graph_data, std::move(rois.rois))}
;
}
virtual void addBackendPasses(ade::ExecutionEngineSetupContext &ectx) override;
@ -700,27 +706,31 @@ void cv::gimpl::GFluidExecutable::initBufferRois(std::vector<int>& readStarts,
} // while (!nodesToVisit.empty())
}
cv::gimpl::GFluidExecutable::GFluidExecutable(const ade::Graph &g,
const std::vector<ade::NodeHandle> &nodes,
const std::vector<cv::gapi::own::Rect> &outputRois)
: m_g(g), m_gm(m_g)
cv::gimpl::FluidGraphInputData cv::gimpl::fluidExtractInputDataFromGraph(const ade::Graph &g, const std::vector<ade::NodeHandle> &nodes)
{
GConstFluidModel fg(m_g);
decltype(FluidGraphInputData::m_agents_data) agents_data;
decltype(FluidGraphInputData::m_scratch_users) scratch_users;
decltype(FluidGraphInputData::m_id_map) id_map;
decltype(FluidGraphInputData::m_all_gmat_ids) all_gmat_ids;
std::size_t mat_count = 0;
GConstFluidModel fg(g);
GModel::ConstGraph m_gm(g);
// Initialize vector of data buffers, build list of operations
// FIXME: There _must_ be a better way to [query] count number of DATA nodes
std::size_t mat_count = 0;
std::size_t last_agent = 0;
auto grab_mat_nh = [&](ade::NodeHandle nh) {
auto rc = m_gm.metadata(nh).get<Data>().rc;
if (m_id_map.count(rc) == 0)
if (id_map.count(rc) == 0)
{
m_all_gmat_ids[mat_count] = nh;
m_id_map[rc] = mat_count++;
all_gmat_ids[mat_count] = nh;
id_map[rc] = mat_count++;
}
};
std::size_t last_agent = 0;
for (const auto &nh : nodes)
{
switch (m_gm.metadata(nh).get<NodeType>().t)
@ -733,15 +743,10 @@ cv::gimpl::GFluidExecutable::GFluidExecutable(const ade::Graph &g,
case NodeType::OP:
{
const auto& fu = fg.metadata(nh).get<FluidUnit>();
switch (fu.k.m_kind)
{
case GFluidKernel::Kind::Filter: m_agents.emplace_back(new FluidFilterAgent(m_g, nh)); break;
case GFluidKernel::Kind::Resize: m_agents.emplace_back(new FluidResizeAgent(m_g, nh)); break;
case GFluidKernel::Kind::NV12toRGB: m_agents.emplace_back(new FluidNV12toRGBAgent(m_g, nh)); break;
default: GAPI_Assert(false);
}
agents_data.push_back({fu.k.m_kind, nh, {}, {}});
// NB.: in_buffer_ids size is equal to Arguments size, not Edges size!!!
m_agents.back()->in_buffer_ids.resize(m_gm.metadata(nh).get<Op>().args.size(), -1);
agents_data.back().in_buffer_ids.resize(m_gm.metadata(nh).get<Op>().args.size(), -1);
for (auto eh : nh->inEdges())
{
// FIXME Only GMats are currently supported (which can be represented
@ -751,23 +756,23 @@ cv::gimpl::GFluidExecutable::GFluidExecutable(const ade::Graph &g,
const auto in_port = m_gm.metadata(eh).get<Input>().port;
const int in_buf = m_gm.metadata(eh->srcNode()).get<Data>().rc;
m_agents.back()->in_buffer_ids[in_port] = in_buf;
agents_data.back().in_buffer_ids[in_port] = in_buf;
grab_mat_nh(eh->srcNode());
}
}
// FIXME: Assumption that all operation outputs MUST be connected
m_agents.back()->out_buffer_ids.resize(nh->outEdges().size(), -1);
agents_data.back().out_buffer_ids.resize(nh->outEdges().size(), -1);
for (auto eh : nh->outEdges())
{
const auto& data = m_gm.metadata(eh->dstNode()).get<Data>();
const auto out_port = m_gm.metadata(eh).get<Output>().port;
const int out_buf = data.rc;
m_agents.back()->out_buffer_ids[out_port] = out_buf;
agents_data.back().out_buffer_ids[out_port] = out_buf;
if (data.shape == GShape::GMAT) grab_mat_nh(eh->dstNode());
}
if (fu.k.m_scratch)
m_scratch_users.push_back(last_agent);
scratch_users.push_back(last_agent);
last_agent++;
break;
}
@ -776,12 +781,50 @@ cv::gimpl::GFluidExecutable::GFluidExecutable(const ade::Graph &g,
}
// Check that IDs form a continiuos set (important for further indexing)
GAPI_Assert(m_id_map.size() > 0);
GAPI_Assert(m_id_map.size() == static_cast<size_t>(mat_count));
GAPI_Assert(id_map.size() > 0);
GAPI_Assert(id_map.size() == static_cast<size_t>(mat_count));
return FluidGraphInputData {std::move(agents_data), std::move(scratch_users), std::move(id_map), std::move(all_gmat_ids), mat_count};
}
cv::gimpl::GFluidExecutable::GFluidExecutable(const ade::Graph &g,
const cv::gimpl::FluidGraphInputData &traverse_res,
const std::vector<cv::gapi::own::Rect> &outputRois)
: m_g(g), m_gm(m_g)
{
GConstFluidModel fg(m_g);
auto tie_traverse_res = [&traverse_res](){
auto& r = traverse_res;
return std::tie(r.m_scratch_users, r.m_id_map, r.m_all_gmat_ids, r.m_mat_count);
};
auto tie_this = [this](){
return std::tie(m_scratch_users, m_id_map, m_all_gmat_ids, m_num_int_buffers);
};
tie_this() = tie_traverse_res();
auto create_fluid_agent = [&g](agent_data_t const& agent_data) -> std::unique_ptr<FluidAgent> {
std::unique_ptr<FluidAgent> agent_ptr;
switch (agent_data.kind)
{
case GFluidKernel::Kind::Filter: agent_ptr.reset(new FluidFilterAgent(g, agent_data.nh)); break;
case GFluidKernel::Kind::Resize: agent_ptr.reset(new FluidResizeAgent(g, agent_data.nh)); break;
case GFluidKernel::Kind::NV12toRGB: agent_ptr.reset(new FluidNV12toRGBAgent(g, agent_data.nh)); break;
default: GAPI_Assert(false);
}
std::tie(agent_ptr->in_buffer_ids, agent_ptr->out_buffer_ids) = std::tie(agent_data.in_buffer_ids, agent_data.out_buffer_ids);
return agent_ptr;
};
for (auto const& agent_data : traverse_res.m_agents_data){
m_agents.push_back(create_fluid_agent(agent_data));
}
// Actually initialize Fluid buffers
GAPI_LOG_INFO(NULL, "Initializing " << mat_count << " fluid buffer(s)" << std::endl);
m_num_int_buffers = mat_count;
GAPI_LOG_INFO(NULL, "Initializing " << m_num_int_buffers << " fluid buffer(s)" << std::endl);
const std::size_t num_scratch = m_scratch_users.size();
m_buffers.resize(m_num_int_buffers + num_scratch);
@ -847,6 +890,12 @@ cv::gimpl::GFluidExecutable::GFluidExecutable(const ade::Graph &g,
makeReshape(outputRois);
GAPI_LOG_INFO(NULL, "Internal buffers: " << std::fixed << std::setprecision(2) << static_cast<float>(total_buffers_size())/1024 << " KB\n");
}
std::size_t cv::gimpl::GFluidExecutable::total_buffers_size() const
{
GConstFluidModel fg(m_g);
std::size_t total_size = 0;
for (const auto &i : ade::util::indexed(m_buffers))
{
@ -854,7 +903,7 @@ cv::gimpl::GFluidExecutable::GFluidExecutable(const ade::Graph &g,
const auto idx = ade::util::index(i);
const auto b = ade::util::value(i);
if (idx >= m_num_int_buffers ||
fg.metadata(m_all_gmat_ids[idx]).get<FluidData>().internal == true)
fg.metadata(m_all_gmat_ids.at(idx)).get<FluidData>().internal == true)
{
GAPI_Assert(b.priv().size() > 0);
}
@ -863,7 +912,7 @@ cv::gimpl::GFluidExecutable::GFluidExecutable(const ade::Graph &g,
// (There can be non-zero sized const border buffer allocated in such buffers)
total_size += b.priv().size();
}
GAPI_LOG_INFO(NULL, "Internal buffers: " << std::fixed << std::setprecision(2) << static_cast<float>(total_size)/1024 << " KB\n");
return total_size;
}
namespace
@ -1196,6 +1245,11 @@ void cv::gimpl::GFluidExecutable::packArg(cv::GArg &in_arg, const cv::GArg &op_a
void cv::gimpl::GFluidExecutable::run(std::vector<InObj> &&input_objs,
std::vector<OutObj> &&output_objs)
{
run(input_objs, output_objs);
}
void cv::gimpl::GFluidExecutable::run(std::vector<InObj> &input_objs,
std::vector<OutObj> &output_objs)
{
// Bind input buffers from parameters
for (auto& it : input_objs) bindInArg(it.first, it.second);
@ -1269,6 +1323,31 @@ void cv::gimpl::GFluidExecutable::run(std::vector<InObj> &&input_objs,
}
}
cv::gimpl::GParallelFluidExecutable::GParallelFluidExecutable(const ade::Graph &g,
const FluidGraphInputData &graph_data,
const std::vector<GFluidOutputRois> &parallelOutputRois)
{
for (auto&& rois : parallelOutputRois){
tiles.emplace_back(g, graph_data, rois.rois);
}
}
void cv::gimpl::GParallelFluidExecutable::reshape(ade::Graph&, const GCompileArgs& )
{
//TODO: implement ?
GAPI_Assert(false && "Not Implemented;");
}
void cv::gimpl::GParallelFluidExecutable::run(std::vector<InObj> &&input_objs,
std::vector<OutObj> &&output_objs)
{
for (auto& tile : tiles ){
tile.run(input_objs, output_objs);
}
}
// FIXME: these passes operate on graph global level!!!
// Need to fix this for heterogeneous (island-based) processing
void GFluidBackendImpl::addBackendPasses(ade::ExecutionEngineSetupContext &ectx)

49
modules/gapi/src/backends/fluid/gfluidbackend.hpp
View File

@ -51,6 +51,13 @@ struct FluidData
gapi::fluid::BorderOpt border;
};
struct agent_data_t {
GFluidKernel::Kind kind;
ade::NodeHandle nh;
std::vector<int> in_buffer_ids;
std::vector<int> out_buffer_ids;
};
struct FluidAgent
{
public:
@ -96,6 +103,19 @@ private:
virtual std::pair<int,int> linesReadAndnextWindow(std::size_t inPort) const = 0;
};
//helper data structure for accumulating graph traversal/analysis data
struct FluidGraphInputData {
std::vector<agent_data_t> m_agents_data;
std::vector<std::size_t> m_scratch_users;
std::unordered_map<int, std::size_t> m_id_map; // GMat id -> buffer idx map
std::map<std::size_t, ade::NodeHandle> m_all_gmat_ids;
std::size_t m_mat_count;
};
//local helper function to traverse the graph once and pass the results to multiple instances of GFluidExecutable
FluidGraphInputData fluidExtractInputDataFromGraph(const ade::Graph &m_g, const std::vector<ade::NodeHandle> &nodes);
class GFluidExecutable final: public GIslandExecutable
{
const ade::Graph &m_g;
@ -121,15 +141,36 @@ class GFluidExecutable final: public GIslandExecutable
void initBufferRois(std::vector<int>& readStarts, std::vector<cv::gapi::own::Rect>& rois, const std::vector<gapi::own::Rect> &out_rois);
void makeReshape(const std::vector<cv::gapi::own::Rect>& out_rois);
std::size_t total_buffers_size() const;
public:
GFluidExecutable(const ade::Graph &g,
const std::vector<ade::NodeHandle> &nodes,
const std::vector<cv::gapi::own::Rect> &outputRois);
virtual inline bool canReshape() const override { return true; }
virtual void reshape(ade::Graph& g, const GCompileArgs& args) override;
virtual void run(std::vector<InObj> &&input_objs,
std::vector<OutObj> &&output_objs) override;
void run(std::vector<InObj> &input_objs,
std::vector<OutObj> &output_objs);
GFluidExecutable(const ade::Graph &g,
const FluidGraphInputData &graph_data,
const std::vector<cv::gapi::own::Rect> &outputRois);
};
class GParallelFluidExecutable final: public GIslandExecutable {
std::vector<GFluidExecutable> tiles;
public:
GParallelFluidExecutable(const ade::Graph &g,
const FluidGraphInputData &graph_data,
const std::vector<GFluidOutputRois> &parallelOutputRois);
virtual inline bool canReshape() const override { return false; }
virtual void reshape(ade::Graph& g, const GCompileArgs& args) override;
virtual void run(std::vector<InObj> &&input_objs,
std::vector<OutObj> &&output_objs) override;
};

204
modules/gapi/test/gapi_fluid_parallel_rois_test.cpp Normal file
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@ -0,0 +1,204 @@
// This file is part of OpenCV project.
// It is subject to the license terms in the LICENSE file found in the top-level directory
// of this distribution and at http://opencv.org/license.html.
//
// Copyright (C) 2019 Intel Corporation
#include "test_precomp.hpp"
#include "gapi_fluid_test_kernels.hpp"
namespace opencv_test
{
namespace {
cv::Mat randomMat(cv::Size img_sz, int type = CV_8UC1, cv::Scalar mean = cv::Scalar(127.0f), cv::Scalar stddev = cv::Scalar(40.f)){
cv::Mat mat(img_sz, type);
cv::randn(mat, mean, stddev);
return mat;
}
cv::GFluidParallelOutputRois asGFluidParallelOutputRois(const std::vector<cv::Rect>& rois){
cv::GFluidParallelOutputRois parallel_rois;
for (auto const& roi : rois) {
parallel_rois.parallel_rois.emplace_back(GFluidOutputRois{{to_own(roi)}});
}
return parallel_rois;
}
void adjust_empty_roi(cv::Rect& roi, cv::Size size){
if (roi.empty()) roi = cv::Rect{{0,0}, size};
}
}
using namespace cv::gapi_test_kernels;
//As GTest can not simultaneously parameterize test with both types and values - lets use type-erasure and virtual interfaces
//to use different computation pipelines
struct ComputationPair {
virtual void run_with_gapi(const cv::Mat& in_mat, cv::GFluidParallelOutputRois const& parallel_rois, cv::Mat& out_mat) = 0;
virtual void run_with_ocv (const cv::Mat& in_mat, const std::vector<cv::Rect>& rois, cv::Mat& out_mat) = 0;
virtual std::string name() const { return {}; }
virtual ~ComputationPair () = default;
friend std::ostream& operator<<(std::ostream& o, ComputationPair const* cp){
std::string custom_name = cp->name();
return o << (custom_name.empty() ? typeid(cp).name() : custom_name );
}
};
struct Blur3x3CP : ComputationPair{
static constexpr int borderType = BORDER_REPLICATE;
static constexpr int kernelSize = 3;
std::string name() const override { return "Blur3x3"; }
void run_with_gapi(const cv::Mat& in_mat, cv::GFluidParallelOutputRois const& parallel_rois, cv::Mat& out_mat_gapi) override {
cv::GMat in;
cv::GMat out = TBlur3x3::on(in, borderType, {});
cv::GComputation c(cv::GIn(in), cv::GOut(out));
// Run G-API
auto cc = c.compile(cv::descr_of(in_mat), cv::compile_args(fluidTestPackage, parallel_rois));
cc(cv::gin(in_mat), cv::gout(out_mat_gapi));
}
void run_with_ocv(const cv::Mat& in_mat, const std::vector<cv::Rect>& rois, cv::Mat& out_mat_ocv) override {
cv::Point anchor = {-1, -1};
// Check with OpenCV
for (auto roi : rois) {
adjust_empty_roi(roi, in_mat.size());
cv::blur(in_mat(roi), out_mat_ocv(roi), {kernelSize, kernelSize}, anchor, borderType);
}
}
};
struct AddCCP : ComputationPair{
std::string name() const override { return "AddC"; }
void run_with_gapi(const cv::Mat& in_mat, cv::GFluidParallelOutputRois const& parallel_rois, cv::Mat& out_mat_gapi) override {
cv::GMat in;
cv::GMat out = TAddCSimple::on(in, 1);
cv::GComputation c(cv::GIn(in), cv::GOut(out));
// Run G-API
auto cc = c.compile(cv::descr_of(in_mat), cv::compile_args(fluidTestPackage, parallel_rois));
cc(cv::gin(in_mat), cv::gout(out_mat_gapi));
}
void run_with_ocv(const cv::Mat& in_mat, const std::vector<cv::Rect>& rois, cv::Mat& out_mat_ocv) override {
// Check with OpenCV
for (auto roi : rois) {
adjust_empty_roi(roi, in_mat.size());
out_mat_ocv(roi) = in_mat(roi) + 1u;
}
}
};
template<BorderTypes _borderType>
struct SequenceOfBlursCP : ComputationPair{
BorderTypes borderType = _borderType;
std::string name() const override { return "SequenceOfBlurs, border type: " + std::to_string(static_cast<int>(borderType)); }
void run_with_gapi(const cv::Mat& in_mat, cv::GFluidParallelOutputRois const& parallel_rois, cv::Mat& out_mat) override {
cv::Scalar borderValue(0);
GMat in;
auto mid = TBlur3x3::on(in, borderType, borderValue);
auto out = TBlur5x5::on(mid, borderType, borderValue);
GComputation c(GIn(in), GOut(out));
auto cc = c.compile(descr_of(in_mat), cv::compile_args(fluidTestPackage, parallel_rois));
cc(cv::gin(in_mat), cv::gout(out_mat));
}
void run_with_ocv (const cv::Mat& in_mat, const std::vector<cv::Rect>& rois, cv::Mat& out_mat) override {
cv::Mat mid_mat_ocv = Mat::zeros(in_mat.size(), in_mat.type());
cv::Point anchor = {-1, -1};
for (auto roi : rois) {
adjust_empty_roi(roi, in_mat.size());
cv::blur(in_mat, mid_mat_ocv, {3,3}, anchor, borderType);
cv::blur(mid_mat_ocv(roi), out_mat(roi), {5,5}, anchor, borderType);
}
}
};
struct TiledComputation : public TestWithParam <std::tuple<ComputationPair*, cv::Size, std::vector<cv::Rect>>> {};
TEST_P(TiledComputation, Test)
{
ComputationPair* cp;
cv::Size img_sz;
std::vector<cv::Rect> rois ;
auto mat_type = CV_8UC1;
std::tie(cp, img_sz, rois) = GetParam();
cv::Mat in_mat = randomMat(img_sz, mat_type);
cv::Mat out_mat_gapi = cv::Mat::zeros(img_sz, mat_type);
cv::Mat out_mat_ocv = cv::Mat::zeros(img_sz, mat_type);
cp->run_with_gapi(in_mat, asGFluidParallelOutputRois(rois), out_mat_gapi);
cp->run_with_ocv (in_mat, rois, out_mat_ocv);
EXPECT_EQ(0, cv::countNonZero(out_mat_gapi != out_mat_ocv))
<< "in_mat : \n" << in_mat << std::endl
<< "diff matrix :\n " << (out_mat_gapi != out_mat_ocv) << std::endl
<< "out_mat_gapi: \n" << out_mat_gapi << std::endl
<< "out_mat_ocv: \n" << out_mat_ocv << std::endl;
}
namespace {
//this is ugly but other variants (like using shared_ptr) are IMHO even more ugly :)
template<typename T, typename... Arg>
T* addr_of_static(Arg... arg) {
static T obj(std::forward<Arg>(arg)...);
return &obj;
}
}
auto single_arg_computations = [](){
return Values( addr_of_static<Blur3x3CP>(),
addr_of_static<AddCCP>(),
addr_of_static<SequenceOfBlursCP<BORDER_CONSTANT>>(),
addr_of_static<SequenceOfBlursCP<BORDER_REPLICATE>>(),
addr_of_static<SequenceOfBlursCP<BORDER_REFLECT_101>>()
);
};
INSTANTIATE_TEST_CASE_P(FluidTiledSerial8x10, TiledComputation,
Combine(
single_arg_computations(),
Values(cv::Size(8, 10)),
Values(std::vector<cv::Rect>{cv::Rect{}},
std::vector<cv::Rect>{cv::Rect{0,0,8,5}, cv::Rect{0,5,8,5}},
std::vector<cv::Rect>{cv::Rect{0,1,8,3}, cv::Rect{0,4,8,3}},
std::vector<cv::Rect>{cv::Rect{0,2,8,3}, cv::Rect{0,5,8,2}},
std::vector<cv::Rect>{cv::Rect{0,3,8,4}, cv::Rect{0,9,8,1}}))
);
INSTANTIATE_TEST_CASE_P(FluidTiledSerial20x15, TiledComputation,
Combine(
single_arg_computations(),
Values(cv::Size(20, 15)),
Values(std::vector<cv::Rect>{cv::Rect{}},
std::vector<cv::Rect>{cv::Rect{{0,0},cv::Size{20,7}},
cv::Rect{{0,7},cv::Size{20,8}}}))
);
INSTANTIATE_TEST_CASE_P(FluidTiledSerial320x240, TiledComputation,
Combine(
single_arg_computations(),
Values(cv::Size(320, 240)),
Values(std::vector<cv::Rect>{cv::Rect{{0,0}, cv::Size{320,120}},
cv::Rect{{0,120}, cv::Size{320,120}}},
std::vector<cv::Rect>{cv::Rect{{0,0}, cv::Size{320,120}},
cv::Rect{{0,120}, cv::Size{320,120}}},
std::vector<cv::Rect>{cv::Rect{{0,0}, cv::Size{320,60}},
cv::Rect{{0,60}, cv::Size{320,60}},
cv::Rect{{0,120},cv::Size{320,120}}}))
);
//FIXME: add multiple outputs tests
} // namespace opencv_test

4
modules/gapi/test/gapi_fluid_test_kernels.cpp
View File

@ -9,6 +9,7 @@
#include <iomanip>
#include "gapi_fluid_test_kernels.hpp"
#include <opencv2/gapi/core.hpp>
#include <opencv2/gapi/own/saturate.hpp>
namespace cv
{
@ -72,7 +73,8 @@ GAPI_FLUID_KERNEL(FAddCSimple, TAddCSimple, false)
for (int i = 0, w = in.length(); i < w; i++)
{
//std::cout << std::setw(4) << int(in_row[i]);
out_row[i] = static_cast<uint8_t>(in_row[i] + cval);
//FIXME: it seems that over kernels might need it as well
out_row[i] = cv::gapi::own::saturate<uint8_t>(in_row[i] + cval);
}
//std::cout << std::endl;
}