Compute Library
 21.02
GCAbsoluteDifferenceKernel.cpp
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25 
26 #include "arm_compute/core/Error.h"
32 #include "arm_compute/core/Types.h"
36 #include "support/StringSupport.h"
37 
38 #include <set>
39 #include <string>
40 
41 using namespace arm_compute;
42 
44  : _input1(nullptr), _input2(nullptr), _output(nullptr)
45 {
46 }
47 
48 void GCAbsoluteDifferenceKernel::configure(const IGCTensor *input1, const IGCTensor *input2, IGCTensor *output)
49 {
53  ARM_COMPUTE_ERROR_ON_MISMATCHING_DATA_TYPES(input1, input2, output);
54 
55  _input1 = input1;
56  _input2 = input2;
57  _output = output;
58 
59  constexpr unsigned int num_elems_processed_per_iteration = 4;
60 
61  // Set kernel build options
62  std::set<std::string> build_opts;
63  build_opts.emplace("#define LOCAL_SIZE_X " + support::cpp11::to_string(1));
64  build_opts.emplace("#define LOCAL_SIZE_Y " + support::cpp11::to_string(1));
65  build_opts.emplace("#define LOCAL_SIZE_Z " + support::cpp11::to_string(1));
66 
67  // Create kernel
68  _kernel = static_cast<GCKernel>(GCKernelLibrary::get().create_kernel("absdiff", build_opts));
69 
70  // Configure kernel window
71  Window win = calculate_max_window(*input1->info(), Steps(num_elems_processed_per_iteration));
72 
73  AccessWindowRectangle input1_access(input1->info(), 0, 0, 4, 1);
74  AccessWindowRectangle input2_access(input2->info(), 0, 0, 4, 1);
75  AccessWindowRectangle output_access(output->info(), 0, 0, 4, 1);
76 
77  update_window_and_padding(win, input1_access, input2_access, output_access);
78 
80  input2->info()->valid_region());
81 
82  output_access.set_valid_region(win, valid_region);
83 
84  IGCKernel::configure(win);
85 }
86 
88 {
91 
92  _kernel.use();
93 
95  do
96  {
97  unsigned int idx = 0;
98  unsigned int binding = 1; // SSBO binding starts from 1.
99  add_2D_tensor_argument(idx, _input1, binding++, slice);
100  add_2D_tensor_argument(idx, _input2, binding++, slice);
101  add_2D_tensor_argument(idx, _output, binding++, slice);
102 
103  _kernel.update_shader_params();
104 
105  enqueue(*this, slice);
106  }
107  while(window.slide_window_slice_2D(slice));
108 }
Window first_slice_window_2D() const
First 2D slice of the window.
Definition: Window.h:283
Window calculate_max_window(const ValidRegion &valid_region, const Steps &steps, bool skip_border, BorderSize border_size)
const Window & window() const
The maximum window the kernel can be executed on.
Definition: IKernel.cpp:28
void enqueue(IGCKernel &kernel, const Window &window, const gles::NDRange &lws=gles::NDRange(1U, 1U, 1U))
Add the kernel to the command queue with the given window.
Definition: IGCKernel.cpp:41
1 channel, 1 U8 per channel
std::string to_string(T &&value)
Convert integer and float values to string.
Interface for GLES Compute tensor.
Definition: IGCTensor.h:35
GCKernel class.
const ValidRegion valid_region
Definition: Scale.cpp:221
bool slide_window_slice_2D(Window &slice) const
Slide the passed 2D window slice.
Definition: Window.h:323
Copyright (c) 2017-2021 Arm Limited.
virtual ValidRegion valid_region() const =0
Valid region of the tensor.
Implementation of a rectangular access pattern.
bool update_window_and_padding(Window &win, Ts &&... patterns)
Update window and padding size for each of the access patterns.
Definition: WindowHelpers.h:46
#define ARM_COMPUTE_ERROR_ON_MISMATCHING_DATA_TYPES(...)
Definition: Validate.h:543
Manages all the GLES kernels compilation and caching, provides accessors for the GLES Context...
Class to describe a number of elements in each dimension.
Definition: Steps.h:40
virtual ITensorInfo * info() const =0
Interface to be implemented by the child class to return the tensor&#39;s metadata.
ValidRegion intersect_valid_regions(const Ts &... regions)
Intersect multiple valid regions.
Definition: WindowHelpers.h:74
void add_2D_tensor_argument(unsigned int &idx, const IGCTensor *tensor, const unsigned int binding_point, const Window &window)
Add the passed 2D tensor&#39;s parameters to the object&#39;s kernel&#39;s arguments starting from the index idx...
Definition: IGCKernel.cpp:127
#define ARM_COMPUTE_ERROR_ON_UNCONFIGURED_KERNEL(k)
Definition: Validate.h:941
#define ARM_COMPUTE_ERROR_ON_DATA_TYPE_CHANNEL_NOT_IN(t, c,...)
Definition: Validate.h:790
void configure(const IGCTensor *input1, const IGCTensor *input2, IGCTensor *output)
Set the inputs and output images.
Wrapper to configure the Khronos EGL and OpenGL ES C header.
static GCKernelLibrary & get()
Get the static instance of GCKernelLibrary.
GCKernel create_kernel(const std::string &shader_name, const StringSet &build_options_set={}) const
Creates a kernel from the kernel library.
unsigned int num_elems_processed_per_iteration
Container for valid region of a window.
Definition: Types.h:188
void run(const Window &window) override
Enqueue the OpenGL ES shader to process the given window.
Describe a multidimensional execution window.
Definition: Window.h:39
#define ARM_COMPUTE_ERROR_ON_INVALID_SUBWINDOW(f, s)
Definition: Validate.h:205
SimpleTensor< T > slice(const SimpleTensor< T > &src, Coordinates starts, Coordinates ends)