reshape_layer.cl File Reference

#include "helpers.h"

Go to the source code of this file.

Functions
__kernel void	reshape_layer (__global uchar *input_ptr, uint input_stride_x, uint input_step_x, uint input_stride_y, uint input_step_y, uint input_stride_z, uint input_step_z, uint input_offset_first_element_in_bytes, __global uchar *output_ptr, uint output_stride_x, uint output_step_x, uint output_stride_y, uint output_step_y, uint output_stride_z, uint output_step_z, uint output_offset_first_element_in_bytes, int2 input_shape, int2 output_shape)
	Perform tensor reshape. More...

Function Documentation

__kernel void reshape_layer	(	__global uchar *	input_ptr,
		uint	input_stride_x,
		uint	input_step_x,
		uint	input_stride_y,
		uint	input_step_y,
		uint	input_stride_z,
		uint	input_step_z,
		uint	input_offset_first_element_in_bytes,
		__global uchar *	output_ptr,
		uint	output_stride_x,
		uint	output_step_x,
		uint	output_stride_y,
		uint	output_step_y,
		uint	output_stride_z,
		uint	output_step_z,
		uint	output_offset_first_element_in_bytes,
		int2	input_shape,
		int2	output_shape
	)

Perform tensor reshape.

Note

Datatype should be given as a preprocessor argument using -DDATA_TYPE=type. e.g. -DDATA_TYPE=short

Parameters

[in]	input_ptr	Pointer to the first source tensor. Supported data types: U8/S8/QS8/U16/S16/QS16/U32/S32/F16/F32
[in]	input_stride_x	Stride of the first source tensor in X dimension (in bytes)
[in]	input_step_x	input_stride_x * number of elements along X processed per workitem(in bytes)
[in]	input_stride_y	Stride of the first source tensor in Y dimension (in bytes)
[in]	input_step_y	input_stride_y * number of elements along Y processed per workitem(in bytes)
[in]	input_stride_z	Stride of the first source tensor in Z dimension (in bytes)
[in]	input_step_z	input_stride_z * number of elements along Z processed per workitem(in bytes)
[in]	input_offset_first_element_in_bytes	The offset of the first element in the first source tensor
[out]	output_ptr	Pointer to the destination tensor. Supported data types: same as input_ptr
[in]	output_stride_x	Stride of the destination tensor in X dimension (in bytes)
[in]	output_step_x	output_stride_x * number of elements along X processed per workitem(in bytes)
[in]	output_stride_y	Stride of the destination tensor in Y dimension (in bytes)
[in]	output_step_y	output_stride_y * number of elements along Y processed per workitem(in bytes)
[in]	output_stride_z	Stride of the destination tensor in Z dimension (in bytes)
[in]	output_step_z	output_stride_z * number of elements along Z processed per workitem(in bytes)
[in]	output_offset_first_element_in_bytes	The offset of the first element in the destination tensor
[in]	input_shape	Input spatial shape
[in]	output_shape	Output spatial shape

Definition at line 49 of file reshape_layer.cl.

References CONVERT_TO_TENSOR3D_STRUCT, CONVERT_TO_TENSOR3D_STRUCT_NO_STEP, DATA_TYPE, Tensor3D::ptr, and tensor3D_offset().

{
    Tensor3D in  = CONVERT_TO_TENSOR3D_STRUCT(input);
    Tensor3D out = CONVERT_TO_TENSOR3D_STRUCT_NO_STEP(output);

    int3 id = (int3)(get_global_id(0), get_global_id(1), get_global_id(2));

    // Linearize index
    int linear_idx = id.x + id.y * input_shape.x + id.z * input_shape.x * input_shape.y;

    // Translate to output
    int3 out_id;
    out_id.x = linear_idx % output_shape.x;
    out_id.y = (linear_idx / output_shape.x) % output_shape.y;
    out_id.z = linear_idx / (output_shape.x * output_shape.y);

    // Store result
    *((__global DATA_TYPE *)tensor3D_offset(&out, out_id.x, out_id.y, out_id.z)) = *((__global DATA_TYPE *)in.ptr);
}