APPBROWSER-400: Implement the tensorshift kernel for fixing DC's alignment issue on OpenGL ES

Change-Id: I7a8489bb0fddc72899ea165e414ee87bdbfb45b3
Reviewed-on: https://eu-gerrit-1.euhpc.arm.com/118106
Reviewed-by: Joel Liang <joel.liang@arm.com>
Tested-by: Jenkins <bsgcomp@arm.com>
Reviewed-by: Anthony Barbier <anthony.barbier@arm.com>

1 files changed, 108 insertions, 0 deletions

diff --git a/src/core/GLES_COMPUTE/kernels/GCTensorShiftKernel.cpp b/src/core/GLES_COMPUTE/kernels/GCTensorShiftKernel.cpp
new file mode 100644
index 0000000000..c2182171a6
--- /dev/null
+++ b/src/core/GLES_COMPUTE/kernels/GCTensorShiftKernel.cpp
@@ -0,0 +1,108 @@
+/*
+ * Copyright (c) 2017-2018 ARM Limited.
+ *
+ * SPDX-License-Identifier: MIT
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to
+ * deal in the Software without restriction, including without limitation the
+ * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
+ * sell copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in all
+ * copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+#include "arm_compute/core/GLES_COMPUTE/kernels/GCTensorShiftKernel.h"
+
+#include "arm_compute/core/AccessWindowStatic.h"
+#include "arm_compute/core/Error.h"
+#include "arm_compute/core/GLES_COMPUTE/GCHelpers.h"
+#include "arm_compute/core/GLES_COMPUTE/GCKernelLibrary.h"
+#include "arm_compute/core/GLES_COMPUTE/IGCTensor.h"
+#include "arm_compute/core/Helpers.h"
+#include "arm_compute/core/IAccessWindow.h"
+#include "arm_compute/core/ITensor.h"
+#include "arm_compute/core/Types.h"
+#include "arm_compute/core/Validate.h"
+#include "support/ToolchainSupport.h"
+
+using namespace arm_compute;
+using namespace arm_compute::gles_compute;
+
+GCTensorShiftKernel::GCTensorShiftKernel()
+    : _input(nullptr), _lws(gles::NDRange(1U, 1U, 1U))
+{
+}
+
+void GCTensorShiftKernel::configure(IGCTensor *input)
+{
+    ARM_COMPUTE_ERROR_ON_DATA_TYPE_CHANNEL_NOT_IN(input, 1, DataType::F16, DataType::F32);
+
+    _input = input;
+
+    std::set<std::string> options;
+    options.emplace("#define LOCAL_SIZE_X " + support::cpp11::to_string(_lws[0]));
+    options.emplace("#define LOCAL_SIZE_Y " + support::cpp11::to_string(_lws[1]));
+    options.emplace("#define LOCAL_SIZE_Z " + support::cpp11::to_string(_lws[2]));
+    options.emplace("#define WIDTH " + support::cpp11::to_string(input->info()->dimension(0)));
+
+    std::string dt_name = (input->info()->data_type() == DataType::F32) ? "DATA_TYPE_FP32" : "DATA_TYPE_FP16";
+    options.emplace(("#define " + dt_name));
+
+    unsigned int num_elems_written_per_iteration_x = input->info()->dimension(0) + input->info()->padding().left + input->info()->padding().right;
+    unsigned int num_elems_written_per_iteration_y = 1;
+    unsigned int num_elems_written_per_iteration_z = 1;
+
+    std::stringstream kernel_name;
+    kernel_name << "tensorshift";
+
+    _kernel = static_cast<GCKernel>(GCKernelLibrary::get().create_kernel(kernel_name.str(), options));
+
+    Window                 win = calculate_max_enlarged_window(*input->info(), Steps(num_elems_written_per_iteration_x, num_elems_written_per_iteration_y, num_elems_written_per_iteration_z));
+    AccessWindowHorizontal input_access(input->info(), 0, num_elems_written_per_iteration_x);
+
+    update_window_and_padding(win, input_access);
+
+    IGCKernel::configure(win);
+}
+
+void GCTensorShiftKernel::run(const Window &window)
+{
+    ARM_COMPUTE_ERROR_ON_UNCONFIGURED_KERNEL(this);
+    ARM_COMPUTE_ERROR_ON_INVALID_SUBWINDOW(IKernel::window(), window);
+
+    _kernel.use();
+
+    // Get initial windows
+    Window slice = window.first_slice_window_3D();
+    slice.shift(Window::DimX, -(_input->info()->padding()).left);
+
+    do
+    {
+        unsigned int idx = 0;
+
+        add_3D_tensor_argument(idx, _input, 1, slice);
+
+        const PaddingSize &padding1 = _input->info()->padding();
+
+        if(int(padding1.left) == 0)
+        {
+            break;
+        }
+
+        _kernel.set_argument(idx++, static_cast<unsigned int>(padding1.left));
+
+        _kernel.update_shader_params();
+        enqueue(*this, slice, _lws);
+    }
+    while(window.slide_window_slice_3D(slice));
+}