src/core/CL/cl_kernels/winograd_filter_transform.cl

/*
 * Copyright (c) 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 "helpers.h"

#if defined(SRC_DIM_Z)

/** This OpenCL kernel performs Winograd filter transform 3x3/3x1/1x3 when the data layout is NCHW and the output tile is 2x2/2x1/1x2
 *
 * @note In order to correctly split the input tensor in batches, its dimension across the Z axis (channels for NCHW, height for NHWC) must be passed at compile time using -DSRC_DIM_Z: e.g. -DSRC_DIM_Z=64
 * @note If this kernel is used to perform Winograd filter transform 3x1, -DWINOGRAD_FILTER_TRANSFORM_HORIZONTAL has to be passed at compile time
 * @note If this kernel is used to perform Winograd filter transform 1x3, -DWINOGRAD_FILTER_TRANSFORM_VERTICAL has to be passed at compile time
 *
 * @param[in]  src_ptr                           Pointer to the source tensor. Supported data types: F32
 * @param[in]  src_stride_x                      Stride of the source tensor in X dimension (in bytes)
 * @param[in]  src_step_x                        src_stride_x * number of elements along X processed per workitem(in bytes)
 * @param[in]  src_stride_y                      Stride of the source tensor in Y dimension (in bytes)
 * @param[in]  src_step_y                        src_stride_y * number of elements along Y processed per workitem(in bytes)
 * @param[in]  src_stride_z                      Stride of the source tensor in Z dimension (in bytes)
 * @param[in]  src_step_z                        src_stride_z * number of elements along Z processed per workitem(in bytes)
 * @param[in]  src_stride_w                      Stride of the source tensor in W dimension (in bytes)
 * @param[in]  src_step_w                        src_stride_w * number of elements along W processed per workitem(in bytes)
 * @param[in]  src_offset_first_element_in_bytes The offset of the first element in the source tensor
 * @param[out] dst_ptr                           Pointer to the destination tensor. Supported data types: same as @p src_ptr
 * @param[in]  dst_stride_x                      Stride of the destination tensor in X dimension (in bytes)
 * @param[in]  dst_step_x                        dst_stride_x * number of elements along X processed per workitem(in bytes)
 * @param[in]  dst_stride_y                      Stride of the destination tensor in Y dimension (in bytes)
 * @param[in]  dst_step_y                        dst_stride_y * number of elements along Y processed per workitem(in bytes)
 * @param[in]  src_stride_z                      Stride of the source tensor in Z dimension (in bytes)
 * @param[in]  src_step_z                        src_stride_z * number of elements along Z processed per workitem(in bytes)
 * @param[in]  dst_offset_first_element_in_bytes The offset of the first element in the destination tensor
 */
__kernel void winograd_filter_transform_2x2_3x3_nchw(
    TENSOR4D_DECLARATION(src),
    TENSOR3D_DECLARATION(dst))
{
    Tensor4D src = CONVERT_TO_TENSOR4D_STRUCT(src, SRC_DIM_Z);

    const __global uchar *src_addr = tensor4D_offset(&src, 0, 0, 0, 0);

    // Load the values from the input tensor
#if defined(WINOGRAD_FILTER_TRANSFORM_HORIZONTAL)
    float3 w0 = vload3(0, (__global float *)(src_addr));
#elif defined(WINOGRAD_FILTER_TRANSFORM_VERTICAL)
    float3 w0 = (float3)(*((__global float *)(src_addr + 0 * src_stride_y)),
                         *((__global float *)(src_addr + 1 * src_stride_y)),
                         *((__global float *)(src_addr + 2 * src_stride_y)));
#else  // defined(WINOGRAD_FILTER_TRANSFORM_VERTICAL)
    float3 w0 = vload3(0, (__global float *)(src_addr + 0 * src_stride_y));
    float3 w1 = vload3(0, (__global float *)(src_addr + 1 * src_stride_y));
    float3 w2 = vload3(0, (__global float *)(src_addr + 2 * src_stride_y));
#endif // defined(WINOGRAD_FILTER_TRANSFORM_HORIZONTAL)

    // Row 0
    float4 out0 = 0.0f;
    out0.s0     = (w0.s0);
    out0.s1     = (w0.s0 + w0.s1 + w0.s2) * 0.5f;
    out0.s2     = (w0.s0 + w0.s2 - w0.s1) * 0.5f;
    out0.s3     = (w0.s2);

#if !defined(WINOGRAD_FILTER_TRANSFORM_HORIZONTAL) && !defined(WINOGRAD_FILTER_TRANSFORM_VERTICAL)
    // Row 1
    float4 out1 = 0.0f;
    out1.s0     = (w0.s0 + w1.s0 + w2.s0) * 0.5f;
    out1.s1     = (w0.s0 + w1.s0 + w2.s0 + w0.s1 + w1.s1 + w2.s1 + w0.s2 + w1.s2 + w2.s2) * 0.25f;
    out1.s2     = (w0.s0 + w1.s0 + w2.s0 + w0.s2 + w1.s2 + w2.s2 - w0.s1 - w1.s1 - w2.s1) * 0.25f;
    out1.s3     = (w0.s2 + w1.s2 + w2.s2) * 0.5f;

    // Row 2
    float4 out2 = 0.0f;
    out2.s0     = (w0.s0 + w2.s0 - w1.s0) * 0.5f;
    out2.s1     = (w0.s0 + w2.s0 + w0.s1 + w2.s1 + w0.s2 + w2.s2 - w1.s0 - w1.s1 - w1.s2) * 0.25f;
    out2.s2     = (w0.s0 + w2.s0 + w1.s1 + w0.s2 + w2.s2 - w1.s0 - w0.s1 - w2.s1 - w1.s2) * 0.25f;
    out2.s3     = (w0.s2 + w2.s2 - w1.s2) * 0.5f;

    // Row 3
    float4 out3 = 0.0f;
    out3.s0     = (w2.s0);
    out3.s1     = (w2.s0 + w2.s1 + w2.s2) * 0.5f;
    out3.s2     = (w2.s0 + w2.s2 - w2.s1) * 0.5f;
    out3.s3     = (w2.s2);
#endif // !defined(WINOGRAD_FILTER_TRANSFORM_HORIZONTAL) && !defined(WINOGRAD_FILTER_TRANSFORM_VERTICAL)

    int z  = get_global_id(2);
    int x0 = z / SRC_DIM_Z; // idx filter
    int y0 = z % SRC_DIM_Z; // idx channel

    // Get output address
    __global uchar *dst_addr = dst_ptr + dst_offset_first_element_in_bytes + x0 * dst_stride_x + y0 * dst_stride_y;

    // Store the values across the channels
    // 16 channels for 3x3 kernels
    // 4 channels for 3x1 or 1x3 kernels
    *(__global float *)(dst_addr + 0 * dst_stride_z) = out0.s0;
    *(__global float *)(dst_addr + 1 * dst_stride_z) = out0.s1;
    *(__global float *)(dst_addr + 2 * dst_stride_z) = out0.s2;
    *(__global float *)(dst_addr + 3 * dst_stride_z) = out0.s3;

#if !defined(WINOGRAD_FILTER_TRANSFORM_HORIZONTAL) && !defined(WINOGRAD_FILTER_TRANSFORM_VERTICAL)
    *(__global float *)(dst_addr + 4 * dst_stride_z)  = out1.s0;
    *(__global float *)(dst_addr + 5 * dst_stride_z)  = out1.s1;
    *(__global float *)(dst_addr + 6 * dst_stride_z)  = out1.s2;
    *(__global float *)(dst_addr + 7 * dst_stride_z)  = out1.s3;
    *(__global float *)(dst_addr + 8 * dst_stride_z)  = out2.s0;
    *(__global float *)(dst_addr + 9 * dst_stride_z)  = out2.s1;
    *(__global float *)(dst_addr + 10 * dst_stride_z) = out2.s2;
    *(__global float *)(dst_addr + 11 * dst_stride_z) = out2.s3;
    *(__global float *)(dst_addr + 12 * dst_stride_z) = out3.s0;
    *(__global float *)(dst_addr + 13 * dst_stride_z) = out3.s1;
    *(__global float *)(dst_addr + 14 * dst_stride_z) = out3.s2;
    *(__global float *)(dst_addr + 15 * dst_stride_z) = out3.s3;
#endif // !defined(WINOGRAD_FILTER_TRANSFORM_HORIZONTAL) && !defined(WINOGRAD_FILTER_TRANSFORM_VERTICAL)
}

/** This OpenCL kernel performs Winograd filter transform 3x3/3x1/1x3 when the data layout is NCHW and the output tile is 4x4/4x1/1x4
 *
 * @note In order to correctly split the input tensor in batches, its dimension across the Z axis (channels for NCHW, height for NHWC) must be passed at compile time using -DSRC_DIM_Z: e.g. -DSRC_DIM_Z=64
 * @note If this kernel is used to perform Winograd filter transform 3x1, -DWINOGRAD_FILTER_TRANSFORM_HORIZONTAL has to be passed at compile time
 * @note If this kernel is used to perform Winograd filter transform 1x3, -DWINOGRAD_FILTER_TRANSFORM_VERTICAL has to be passed at compile time
 *
 * @param[in]  src_ptr                           Pointer to the source tensor. Supported data types: F32
 * @param[in]  src_stride_x                      Stride of the source tensor in X dimension (in bytes)
 * @param[in]  src_step_x                        src_stride_x * number of elements along X processed per workitem(in bytes)
 * @param[in]  src_stride_y                      Stride of the source tensor in Y dimension (in bytes)
 * @param[in]  src_step_y                        src_stride_y * number of elements along Y processed per workitem(in bytes)
 * @param[in]  src_stride_z                      Stride of the source tensor in Z dimension (in bytes)
 * @param[in]  src_step_z                        src_stride_z * number of elements along Z processed per workitem(in bytes)
 * @param[in]  src_stride_w                      Stride of the source tensor in W dimension (in bytes)
 * @param[in]  src_step_w                        src_stride_w * number of elements along W processed per workitem(in bytes)
 * @param[in]  src_offset_first_element_in_bytes The offset of the first element in the source tensor
 * @param[out] dst_ptr                           Pointer to the destination tensor. Supported data types: same as @p src_ptr
 * @param[in]  dst_stride_x                      Stride of the destination tensor in X dimension (in bytes)
 * @param[in]  dst_step_x                        dst_stride_x * number of elements along X processed per workitem(in bytes)
 * @param[in]  dst_stride_y                      Stride of the destination tensor in Y dimension (in bytes)
 * @param[in]  dst_step_y                        dst_stride_y * number of elements along Y processed per workitem(in bytes)
 * @param[in]  src_stride_z                      Stride of the source tensor in Z dimension (in bytes)
 * @param[in]  src_step_z                        src_stride_z * number of elements along Z processed per workitem(in bytes)
 * @param[in]  dst_offset_first_element_in_bytes The offset of the first element in the destination tensor
 */
__kernel void winograd_filter_transform_4x4_3x3_nchw(
    TENSOR4D_DECLARATION(src),
    TENSOR3D_DECLARATION(dst))
{
    Tensor4D src = CONVERT_TO_TENSOR4D_STRUCT(src, SRC_DIM_Z);

    const __global uchar *src_addr = tensor4D_offset(&src, 0, 0, 0, 0);

    // Load the values from the input tensor
#if defined(WINOGRAD_FILTER_TRANSFORM_HORIZONTAL)
    float3 w0 = vload3(0, (__global float *)(src_addr));
#elif defined(WINOGRAD_FILTER_TRANSFORM_VERTICAL)
    float3 w0 = (float3)(*((__global float *)(src_addr + 0 * src_stride_y)),
                         *((__global float *)(src_addr + 1 * src_stride_y)),
                         *((__global float *)(src_addr + 2 * src_stride_y)));
#else  // defined(WINOGRAD_FILTER_TRANSFORM_VERTICAL)
    float3 w0 = vload3(0, (__global float *)(src_addr + 0 * src_stride_y));
    float3 w1 = vload3(0, (__global float *)(src_addr + 1 * src_stride_y));
    float3 w2 = vload3(0, (__global float *)(src_addr + 2 * src_stride_y));
#endif // defined(WINOGRAD_FILTER_TRANSFORM_HORIZONTAL)

    // Row 0
    float8 out0 = 0.0f;
    out0.s0     = (w0.s0) / 16.f;
    out0.s1     = (-w0.s0 - w0.s1 - w0.s2) / 24.f;
    out0.s2     = (-w0.s0 + w0.s1 - w0.s2) / 24.f;
    out0.s3     = (w0.s0 + 2.f * w0.s1 + 4.f * w0.s2) / 96.f;
    out0.s4     = (w0.s0 - 2.f * w0.s1 + 4.f * w0.s2) / 96.f;
    out0.s5     = (w0.s2) / 4.f;

#if !defined(WINOGRAD_FILTER_TRANSFORM_HORIZONTAL) && !defined(WINOGRAD_FILTER_TRANSFORM_VERTICAL)
    // Row 1
    float8 out1 = 0.0f;
    out1.s0     = (-w0.s0 - w1.s0 - w2.s0) / 24.f;
    out1.s1     = (w0.s0 + w1.s0 + w2.s0 + w0.s1 + w1.s1 + w2.s1 + w0.s2 + w1.s2 + w2.s2) / 36.f;
    out1.s2     = (w0.s0 + w1.s0 + w2.s0 - w0.s1 - w1.s1 - w2.s1 + w0.s2 + w1.s2 + w2.s2) / 36.f;
    out1.s3     = (-w0.s0 - w1.s0 - w2.s0 + 2.f * (-w0.s1 - w1.s1 - w2.s1) + 4.f * (-w0.s2 - w1.s2 - w2.s2)) / 144.f;
    out1.s4     = (-w0.s0 - w1.s0 - w2.s0 + 2.f * (w0.s1 + w1.s1 + w2.s1) + 4.f * (-w0.s2 - w1.s2 - w2.s2)) / 144.f;
    out1.s5     = (-w0.s2 - w1.s2 - w2.s2) / 6.f;

    // Row 2
    float8 out2 = 0.0f;
    out2.s0     = (-w0.s0 + w1.s0 - w2.s0) / 24.f;
    out2.s1     = (w0.s0 - w1.s0 + w2.s0 + w0.s1 - w1.s1 + w2.s1 + w0.s2 - w1.s2 + w2.s2) / 36.f;
    out2.s2     = (w0.s0 - w1.s0 + w2.s0 - w0.s1 + w1.s1 - w2.s1 + w0.s2 - w1.s2 + w2.s2) / 36.f;
    out2.s3     = (-w0.s0 + w1.s0 - w2.s0 + 2.f * (-w0.s1 + w1.s1 - w2.s1) + 4.f * (-w0.s2 + w1.s2 - w2.s2)) / 144.f;
    out2.s4     = (-w0.s0 + w1.s0 - w2.s0 + 2.f * (w0.s1 - w1.s1 + w2.s1) + 4.f * (-w0.s2 + w1.s2 - w2.s2)) / 144.f;
    out2.s5     = (-w0.s2 + w1.s2 - w2.s2) / 6.f;

    // Row 3
    float8 out3 = 0.0f;
    out3.s0     = (w0.s0 + 2.f * w1.s0 + 4.f * w2.s0) / 96.f;
    out3.s1     = (-w0.s0 - 2.f * w1.s0 - 4.f * w2.s0 - w0.s1 - 2.f * w1.s1 - 4.f * w2.s1 - w0.s2 - 2.f * w1.s2 - 4.f * w2.s2) / 144.f;
    out3.s2     = (-w0.s0 - 2.f * w1.s0 - 4.f * w2.s0 + w0.s1 + 2.f * w1.s1 + 4.f * w2.s1 - w0.s2 - 2.f * w1.s2 - 4.f * w2.s2) / 144.f;
    out3.s3     = ((w0.s0 + 2.f * w1.s0 + 4.f * w2.s0) + 2.f * (w0.s1 + 2.f * w1.s1 + 4.f * w2.s1) + 4.f * (w0.s2 + 2.f * w1.s2 + 4.f * w2.s2)) / 576.f;
    out3.s4     = ((w0.s0 + 2.f * w1.s0 + 4.f * w2.s0) + 2.f * (-w0.s1 - 2.f * w1.s1 - 4.f * w2.s1) + 4.f * (w0.s2 + 2.f * w1.s2 + 4.f * w2.s2)) / 576.f;
    out3.s5     = (w0.s2 + 2.f * w1.s2 + 4.f * w2.s2) / 24.f;

    // Row 4
    float8 out4 = 0.0f;
    out4.s0     = (w0.s0 - 2.f * w1.s0 + 4.f * w2.s0) / 96.f;
    out4.s1     = (-w0.s0 + 2.f * w1.s0 - 4.f * w2.s0 - w0.s1 + 2.f * w1.s1 - 4.f * w2.s1 - w0.s2 + 2.f * w1.s2 - 4.f * w2.s2) / 144.f;
    out4.s2     = (-w0.s0 + 2.f * w1.s0 - 4.f * w2.s0 + w0.s1 - 2.f * w1.s1 + 4.f * w2.s1 - w0.s2 + 2.f * w1.s2 - 4.f * w2.s2) / 144.f;
    out4.s3     = ((w0.s0 - 2.f * w1.s0 + 4.f * w2.s0) + 2.f * (w0.s1 - 2.f * w1.s1 + 4.f * w2.s1) + 4.f * (w0.s2 - 2.f * w1.s2 + 4.f * w2.s2)) / 576.f;
    out4.s4     = ((w0.s0 - 2.f * w1.s0 + 4.f * w2.s0) + 2.f * (-w0.s1 + 2.f * w1.s1 - 4.f * w2.s1) + 4.f * (w0.s2 - 2.f * w1.s2 + 4.f * w2.s2)) / 576.f;
    out4.s5     = (w0.s2 - 2.f * w1.s2 + 4.f * w2.s2) / 24.f;

    // Row 5
    float8 out5 = 0.0f;
    out5.s0     = (w2.s0) / 4.f;
    out5.s1     = (-w2.s0 - w2.s1 - w2.s2) / 6.f;
    out5.s2     = (-w2.s0 + w2.s1 - w2.s2) / 6.f;
    out5.s3     = (w2.s0 + 2.f * w2.s1 + 4.f * w2.s2) / 24.f;
    out5.s4     = (w2.s0 - 2.f * w2.s1 + 4.f * w2.s2) / 24.f;
    out5.s5     = (w2.s2);
#endif // !defined(WINOGRAD_FILTER_TRANSFORM_HORIZONTAL) && !defined(WINOGRAD_FILTER_TRANSFORM_VERTICAL)

    int z  = get_global_id(2);
    int x0 = z / SRC_DIM_Z; // idx filter
    int y0 = z % SRC_DIM_Z; // idx channel

    // Get output address
    __global uchar *dst_addr = dst_ptr + dst_offset_first_element_in_bytes + x0 * dst_stride_x + y0 * dst_stride_y;

    // Store the values across the channels
    // 36 channels for 3x3 kernels
    // 6 channels for 3x1 or 1x3 kernels
    *(__global float *)(dst_addr + 0 * dst_stride_z) = out0.s0;
    *(__global float *)(dst_addr + 1 * dst_stride_z) = out0.s1;
    *(__global float *)(dst_addr + 2 * dst_stride_z) = out0.s2;
    *(__global float *)(dst_addr + 3 * dst_stride_z) = out0.s3;
    *(__global float *)(dst_addr + 4 * dst_stride_z) = out0.s4;
    *(__global float *)(dst_addr + 5 * dst_stride_z) = out0.s5;

#if !defined(WINOGRAD_FILTER_TRANSFORM_HORIZONTAL) && !defined(WINOGRAD_FILTER_TRANSFORM_VERTICAL)
    *(__global float *)(dst_addr + 6 * dst_stride_z)  = out1.s0;
    *(__global float *)(dst_addr + 7 * dst_stride_z)  = out1.s1;
    *(__global float *)(dst_addr + 8 * dst_stride_z)  = out1.s2;
    *(__global float *)(dst_addr + 9 * dst_stride_z)  = out1.s3;
    *(__global float *)(dst_addr + 10 * dst_stride_z) = out1.s4;
    *(__global float *)(dst_addr + 11 * dst_stride_z) = out1.s5;
    *(__global float *)(dst_addr + 12 * dst_stride_z) = out2.s0;
    *(__global float *)(dst_addr + 13 * dst_stride_z) = out2.s1;
    *(__global float *)(dst_addr + 14 * dst_stride_z) = out2.s2;
    *(__global float *)(dst_addr + 15 * dst_stride_z) = out2.s3;
    *(__global float *)(dst_addr + 16 * dst_stride_z) = out2.s4;
    *(__global float *)(dst_addr + 17 * dst_stride_z) = out2.s5;
    *(__global float *)(dst_addr + 18 * dst_stride_z) = out3.s0;
    *(__global float *)(dst_addr + 19 * dst_stride_z) = out3.s1;
    *(__global float *)(dst_addr + 20 * dst_stride_z) = out3.s2;
    *(__global float *)(dst_addr + 21 * dst_stride_z) = out3.s3;
    *(__global float *)(dst_addr + 22 * dst_stride_z) = out3.s4;
    *(__global float *)(dst_addr + 23 * dst_stride_z) = out3.s5;
    *(__global float *)(dst_addr + 24 * dst_stride_z) = out4.s0;
    *(__global float *)(dst_addr + 25 * dst_stride_z) = out4.s1;
    *(__global float *)(dst_addr + 26 * dst_stride_z) = out4.s2;
    *(__global float *)(dst_addr + 27 * dst_stride_z) = out4.s3;
    *(__global float *)(dst_addr + 28 * dst_stride_z) = out4.s4;
    *(__global float *)(dst_addr + 29 * dst_stride_z) = out4.s5;
    *(__global float *)(dst_addr + 30 * dst_stride_z) = out5.s0;
    *(__global float *)(dst_addr + 31 * dst_stride_z) = out5.s1;
    *(__global float *)(dst_addr + 32 * dst_stride_z) = out5.s2;
    *(__global float *)(dst_addr + 33 * dst_stride_z) = out5.s3;
    *(__global float *)(dst_addr + 34 * dst_stride_z) = out5.s4;
    *(__global float *)(dst_addr + 35 * dst_stride_z) = out5.s5;
#endif // !defined(WINOGRAD_FILTER_TRANSFORM_HORIZONTAL) && !defined(WINOGRAD_FILTER_TRANSFORM_VERTICAL)
}

#if defined(WINOGRAD_FILTER_TRANSFORM_HORIZONTAL)
/** This OpenCL kernel performs Winograd filter transform 3x1 when the data layout is NCHW and the output tile is 2x1
 *
 * @note In order to correctly split the input tensor in batches, its dimension across the Z axis (channels for NCHW, height for NHWC) must be passed at compile time using -DSRC_DIM_Z: e.g. -DSRC_DIM_Z=64
 * @note -DWINOGRAD_FILTER_TRANSFORM_HORIZONTAL has to be passed at compile time to perform Winograd Filter Transform
 *
 * @param[in]  src_ptr                           Pointer to the source tensor. Supported data types: F32
 * @param[in]  src_stride_x                      Stride of the source tensor in X dimension (in bytes)
 * @param[in]  src_step_x                        src_stride_x * number of elements along X processed per workitem(in bytes)
 * @param[in]  src_stride_y                      Stride of the source tensor in Y dimension (in bytes)
 * @param[in]  src_step_y                        src_stride_y * number of elements along Y processed per workitem(in bytes)
 * @param[in]  src_stride_z                      Stride of the source tensor in Z dimension (in bytes)
 * @param[in]  src_step_z                        src_stride_z * number of elements along Z processed per workitem(in bytes)
 * @param[in]  src_stride_w                      Stride of the source tensor in W dimension (in bytes)
 * @param[in]  src_step_w                        src_stride_w * number of elements along W processed per workitem(in bytes)
 * @param[in]  src_offset_first_element_in_bytes The offset of the first element in the source tensor
 * @param[out] dst_ptr                           Pointer to the destination tensor. Supported data types: same as @p src_ptr
 * @param[in]  dst_stride_x                      Stride of the destination tensor in X dimension (in bytes)
 * @param[in]  dst_step_x                        dst_stride_x * number of elements along X processed per workitem(in bytes)
 * @param[in]  dst_stride_y                      Stride of the destination tensor in Y dimension (in bytes)
 * @param[in]  dst_step_y                        dst_stride_y * number of elements along Y processed per workitem(in bytes)
 * @param[in]  src_stride_z                      Stride of the source tensor in Z dimension (in bytes)
 * @param[in]  src_step_z                        src_stride_z * number of elements along Z processed per workitem(in bytes)
 * @param[in]  dst_offset_first_element_in_bytes The offset of the first element in the destination tensor
 */
__kernel void winograd_filter_transform_2x1_3x1_nchw(
    TENSOR4D_DECLARATION(src),
    TENSOR3D_DECLARATION(dst))
{
    winograd_filter_transform_2x2_3x3_nchw(src_ptr,
                                           src_stride_x,
                                           src_step_x,
                                           src_stride_y,
                                           src_step_y,
                                           src_stride_z,
                                           src_step_z,
                                           src_stride_w,
                                           src_step_w,
                                           src_offset_first_element_in_bytes,
                                           dst_ptr,
                                           dst_stride_x,
                                           dst_step_x,
                                           dst_stride_y,
                                           dst_step_y,
                                           dst_stride_z,
                                           dst_step_z,
                                           dst_offset_first_element_in_bytes);
}

/** This OpenCL kernel performs Winograd filter transform 3x1 when the data layout is NCHW and the output tile is 4x1
 *
 * @note In order to correctly split the input tensor in batches, its dimension across the Z axis (channels for NCHW, height for NHWC) must be passed at compile time using -DSRC_DIM_Z: e.g. -DSRC_DIM_Z=64
 * @note -DWINOGRAD_FILTER_TRANSFORM_HORIZONTAL has to be passed at compile time to perform Winograd Filter Transform
 *
 * @param[in]  src_ptr                           Pointer to the source tensor. Supported data types: F32
 * @param[in]  src_stride_x                      Stride of the source tensor in X dimension (in bytes)
 * @param[in]  src_step_x                        src_stride_x * number of elements along X processed per workitem(in bytes)
 * @param[in]  src_stride_y                      Stride of the source tensor in Y dimension (in bytes)
 * @param[in]  src_step_y                        src_stride_y * number of elements along Y processed per workitem(in bytes)
 * @param[in]  src_stride_z                      Stride of the source tensor in Z dimension (in bytes)
 * @param[in]  src_step_z                        src_stride_z * number of elements along Z processed per workitem(in bytes)
 * @param[in]  src_stride_w                      Stride of the source tensor in W dimension (in bytes)
 * @param[in]  src_step_w                        src_stride_w * number of elements along W processed per workitem(in bytes)
 * @param[in]  src_offset_first_element_in_bytes The offset of the first element in the source tensor
 * @param[out] dst_ptr                           Pointer to the destination tensor. Supported data types: same as @p src_ptr
 * @param[in]  dst_stride_x                      Stride of the destination tensor in X dimension (in bytes)
 * @param[in]  dst_step_x                        dst_stride_x * number of elements along X processed per workitem(in bytes)
 * @param[in]  dst_stride_y                      Stride of the destination tensor in Y dimension (in bytes)
 * @param[in]  dst_step_y                        dst_stride_y * number of elements along Y processed per workitem(in bytes)
 * @param[in]  src_stride_z                      Stride of the source tensor in Z dimension (in bytes)
 * @param[in]  src_step_z                        src_stride_z * number of elements along Z processed per workitem(in bytes)
 * @param[in]  dst_offset_first_element_in_bytes The offset of the first element in the destination tensor
 */
__kernel void winograd_filter_transform_4x1_3x1_nchw(
    TENSOR4D_DECLARATION(src),
    TENSOR3D_DECLARATION(dst))
{
    winograd_filter_transform_4x4_3x3_nchw(src_ptr,
                                           src_stride_x,
                                           src_step_x,
                                           src_stride_y,
                                           src_step_y,
                                           src_stride_z,
                                           src_step_z,
                                           src_stride_w,
                                           src_step_w,
                                           src_offset_first_element_in_bytes,
                                           dst_ptr,
                                           dst_stride_x,
                                           dst_step_x,
                                           dst_stride_y,
                                           dst_step_y,
                                           dst_stride_z,
                                           dst_step_z,
                                           dst_offset_first_element_in_bytes);
}
#endif // defined(WINOGRAD_FILTER_TRANSFORM_HORIZONTAL)

#if defined(WINOGRAD_FILTER_TRANSFORM_VERTICAL)
/** This OpenCL kernel performs Winograd filter transform 1x3 when the data layout is NCHW and the output tile is 1x2
 *
 * @note In order to correctly split the input tensor in batches, its dimension across the Z axis (channels for NCHW, height for NHWC) must be passed at compile time using -DSRC_DIM_Z: e.g. -DSRC_DIM_Z=64
 * @note -DWINOGRAD_FILTER_TRANSFORM_VERTICAL has to be passed at compile time to perform Winograd Filter Transform
 *
 * @param[in]  src_ptr                           Pointer to the source tensor. Supported data types: F32
 * @param[in]  src_stride_x                      Stride of the source tensor in X dimension (in bytes)
 * @param[in]  src_step_x                        src_stride_x * number of elements along X processed per workitem(in bytes)
 * @param[in]  src_stride_y                      Stride of the source tensor in Y dimension (in bytes)
 * @param[in]  src_step_y                        src_stride_y * number of elements along Y processed per workitem(in bytes)
 * @param[in]  src_stride_z                      Stride of the source tensor in Z dimension (in bytes)
 * @param[in]  src_step_z                        src_stride_z * number of elements along Z processed per workitem(in bytes)
 * @param[in]  src_stride_w                      Stride of the source tensor in W dimension (in bytes)
 * @param[in]  src_step_w                        src_stride_w * number of elements along W processed per workitem(in bytes)
 * @param[in]  src_offset_first_element_in_bytes The offset of the first element in the source tensor
 * @param[out] dst_ptr                           Pointer to the destination tensor. Supported data types: same as @p src_ptr
 * @param[in]  dst_stride_x                      Stride of the destination tensor in X dimension (in bytes)
 * @param[in]  dst_step_x                        dst_stride_x * number of elements along X processed per workitem(in bytes)
 * @param[in]  dst_stride_y                      Stride of the destination tensor in Y dimension (in bytes)
 * @param[in]  dst_step_y                        dst_stride_y * number of elements along Y processed per workitem(in bytes)
 * @param[in]  src_stride_z                      Stride of the source tensor in Z dimension (in bytes)
 * @param[in]  src_step_z                        src_stride_z * number of elements along Z processed per workitem(in bytes)
 * @param[in]  dst_offset_first_element_in_bytes The offset of the first element in the destination tensor
 */
__kernel void winograd_filter_transform_1x2_1x3_nchw(
    TENSOR4D_DECLARATION(src),
    TENSOR3D_DECLARATION(dst))
{
    winograd_filter_transform_2x2_3x3_nchw(src_ptr,
                                           src_stride_x,
                                           src_step_x,
                                           src_stride_y,
                                           src_step_y,
                                           src_stride_z,
                                           src_step_z,
                                           src_stride_w,
                                           src_step_w,
                                           src_offset_first_element_in_bytes,
                                           dst_ptr,
                                           dst_stride_x,
                                           dst_step_x,
                                           dst_stride_y,
                                           dst_step_y,
                                           dst_stride_z,
                                           dst_step_z,
                                           dst_offset_first_element_in_bytes);
}

/** This OpenCL kernel performs Winograd filter transform 1x3 when the data layout is NCHW and the output tile is 1x4
 *
 * @note In order to correctly split the input tensor in batches, its dimension across the Z axis (channels for NCHW, height for NHWC) must be passed at compile time using -DSRC_DIM_Z: e.g. -DSRC_DIM_Z=64
 * @note -DWINOGRAD_FILTER_TRANSFORM_VERTICAL has to be passed at compile time to perform Winograd Filter Transform
 *
 * @param[in]  src_ptr                           Pointer to the source tensor. Supported data types: F32
 * @param[in]  src_stride_x                      Stride of the source tensor in X dimension (in bytes)
 * @param[in]  src_step_x                        src_stride_x * number of elements along X processed per workitem(in bytes)
 * @param[in]  src_stride_y                      Stride of the source tensor in Y dimension (in bytes)
 * @param[in]  src_step_y                        src_stride_y * number of elements along Y processed per workitem(in bytes)
 * @param[in]  src_stride_z                      Stride of the source tensor in Z dimension (in bytes)
 * @param[in]  src_step_z                        src_stride_z * number of elements along Z processed per workitem(in bytes)
 * @param[in]  src_stride_w                      Stride of the source tensor in W dimension (in bytes)
 * @param[in]  src_step_w                        src_stride_w * number of elements along W processed per workitem(in bytes)
 * @param[in]  src_offset_first_element_in_bytes The offset of the first element in the source tensor
 * @param[out] dst_ptr                           Pointer to the destination tensor. Supported data types: same as @p src_ptr
 * @param[in]  dst_stride_x                      Stride of the destination tensor in X dimension (in bytes)
 * @param[in]  dst_step_x                        dst_stride_x * number of elements along X processed per workitem(in bytes)
 * @param[in]  dst_stride_y                      Stride of the destination tensor in Y dimension (in bytes)
 * @param[in]  dst_step_y                        dst_stride_y * number of elements along Y processed per workitem(in bytes)
 * @param[in]  src_stride_z                      Stride of the source tensor in Z dimension (in bytes)
 * @param[in]  src_step_z                        src_stride_z * number of elements along Z processed per workitem(in bytes)
 * @param[in]  dst_offset_first_element_in_bytes The offset of the first element in the destination tensor
 */
__kernel void winograd_filter_transform_1x4_1x3_nchw(
    TENSOR4D_DECLARATION(src),
    TENSOR3D_DECLARATION(dst))
{
    winograd_filter_transform_4x4_3x3_nchw(src_ptr,
                                           src_stride_x,
                                           src_step_x,
                                           src_stride_y,
                                           src_step_y,
                                           src_stride_z,
                                           src_step_z,
                                           src_stride_w,
                                           src_step_w,
                                           src_offset_first_element_in_bytes,
                                           dst_ptr,
                                           dst_stride_x,
                                           dst_step_x,
                                           dst_stride_y,
                                           dst_step_y,
                                           dst_stride_z,
                                           dst_step_z,
                                           dst_offset_first_element_in_bytes);
}
#endif // defined(WINOGRAD_FILTER_TRANSFORM_VERTICAL)

/** This OpenCL kernel performs Winograd filter transform 3x3 when the data layout is NHWC and the output tile is 4x4
 *
 * @note In order to correctly split the input tensor in batches, its dimension across the Z axis (channels for NCHW, height for NHWC) must be passed at compile time using -DSRC_DIM_Z: e.g. -DSRC_DIM_Z=64
 *
 * @param[in]  src_ptr                           Pointer to the source tensor. Supported data types: F32
 * @param[in]  src_stride_x                      Stride of the source tensor in X dimension (in bytes)
 * @param[in]  src_step_x                        src_stride_x * number of elements along X processed per workitem(in bytes)
 * @param[in]  src_stride_y                      Stride of the source tensor in Y dimension (in bytes)
 * @param[in]  src_step_y                        src_stride_y * number of elements along Y processed per workitem(in bytes)
 * @param[in]  src_stride_z                      Stride of the source tensor in Z dimension (in bytes)
 * @param[in]  src_step_z                        src_stride_z * number of elements along Z processed per workitem(in bytes)
 * @param[in]  src_stride_w                      Stride of the source tensor in W dimension (in bytes)
 * @param[in]  src_step_w                        src_stride_w * number of elements along W processed per workitem(in bytes)
 * @param[in]  src_offset_first_element_in_bytes The offset of the first element in the source tensor
 * @param[out] dst_ptr                           Pointer to the destination tensor. Supported data types: same as @p src_ptr
 * @param[in]  dst_stride_x                      Stride of the destination tensor in X dimension (in bytes)
 * @param[in]  dst_step_x                        dst_stride_x * number of elements along X processed per workitem(in bytes)
 * @param[in]  dst_stride_y                      Stride of the destination tensor in Y dimension (in bytes)
 * @param[in]  dst_step_y                        dst_stride_y * number of elements along Y processed per workitem(in bytes)
 * @param[in]  src_stride_z                      Stride of the source tensor in Z dimension (in bytes)
 * @param[in]  src_step_z                        src_stride_z * number of elements along Z processed per workitem(in bytes)
 * @param[in]  dst_offset_first_element_in_bytes The offset of the first element in the destination tensor
 */
__kernel void winograd_filter_transform_4x4_3x3_nhwc(
    TENSOR4D_DECLARATION(src),
    TENSOR3D_DECLARATION(dst))
{
    Tensor4D src = CONVERT_TO_TENSOR4D_STRUCT(src, SRC_DIM_Z);

    const __global uchar *src_addr = src_ptr + src_offset_first_element_in_bytes + get_global_id(0) * src_step_x + get_global_id(1) * src_step_y + get_global_id(2) * src_step_w;

    // Load the values from the input tensor
    float w00 = *((__global float *)(src_addr + 0 * src_stride_z + 0 * src_stride_y));
    float w01 = *((__global float *)(src_addr + 0 * src_stride_z + 1 * src_stride_y));
    float w02 = *((__global float *)(src_addr + 0 * src_stride_z + 2 * src_stride_y));
    float w10 = *((__global float *)(src_addr + 1 * src_stride_z + 0 * src_stride_y));
    float w11 = *((__global float *)(src_addr + 1 * src_stride_z + 1 * src_stride_y));
    float w12 = *((__global float *)(src_addr + 1 * src_stride_z + 2 * src_stride_y));
    float w20 = *((__global float *)(src_addr + 2 * src_stride_z + 0 * src_stride_y));
    float w21 = *((__global float *)(src_addr + 2 * src_stride_z + 1 * src_stride_y));
    float w22 = *((__global float *)(src_addr + 2 * src_stride_z + 2 * src_stride_y));

    // Transform the 3x3 tile in a 6x6 tile
    float out00, out01, out02, out03, out04, out05;
    float out10, out11, out12, out13, out14, out15;
    float out20, out21, out22, out23, out24, out25;
    float out30, out31, out32, out33, out34, out35;
    float out40, out41, out42, out43, out44, out45;
    float out50, out51, out52, out53, out54, out55;

    out00 = out01 = out02 = out03 = out04 = out05 = 0.f;
    out10 = out11 = out12 = out13 = out14 = out15 = 0.f;
    out20 = out21 = out22 = out23 = out24 = out25 = 0.f;
    out30 = out31 = out32 = out33 = out34 = out35 = 0.f;
    out40 = out41 = out42 = out43 = out44 = out45 = 0.f;
    out50 = out51 = out52 = out53 = out54 = out55 = 0.f;

    // Row 0
    out00 = (w00) / 16.f;
    out01 = (-w00 - w01 - w02) / 24.f;
    out02 = (-w00 + w01 - w02) / 24.f;
    out03 = (w00 + 2.f * w01 + 4.f * w02) / 96.f;
    out04 = (w00 - 2.f * w01 + 4.f * w02) / 96.f;
    out05 = (w02) / 4.f;

    // Row 1
    out10 = (-w00 - w10 - w20) / 24.f;
    out11 = (w00 + w10 + w20 + w01 + w11 + w21 + w02 + w12 + w22) / 36.f;
    out12 = (w00 + w10 + w20 - w01 - w11 - w21 + w02 + w12 + w22) / 36.f;
    out13 = (-w00 - w10 - w20 + 2.f * (-w01 - w11 - w21) + 4.f * (-w02 - w12 - w22)) / 144.f;
    out14 = (-w00 - w10 - w20 + 2.f * (w01 + w11 + w21) + 4.f * (-w02 - w12 - w22)) / 144.f;
    out15 = (-w02 - w12 - w22) / 6.f;

    // Row 2
    out20 = (-w00 + w10 - w20) / 24.f;
    out21 = (w00 - w10 + w20 + w01 - w11 + w21 + w02 - w12 + w22) / 36.f;
    out22 = (w00 - w10 + w20 - w01 + w11 - w21 + w02 - w12 + w22) / 36.f;
    out23 = (-w00 + w10 - w20 + 2.f * (-w01 + w11 - w21) + 4.f * (-w02 + w12 - w22)) / 144.f;
    out24 = (-w00 + w10 - w20 + 2.f * (w01 - w11 + w21) + 4.f * (-w02 + w12 - w22)) / 144.f;
    out25 = (-w02 + w12 - w22) / 6.f;

    // Row 3
    out30 = (w00 + 2.f * w10 + 4.f * w20) / 96.f;
    out31 = (-w00 - 2.f * w10 - 4.f * w20 - w01 - 2.f * w11 - 4.f * w21 - w02 - 2.f * w12 - 4.f * w22) / 144.f;
    out32 = (-w00 - 2.f * w10 - 4.f * w20 + w01 + 2.f * w11 + 4.f * w21 - w02 - 2.f * w12 - 4.f * w22) / 144.f;
    out33 = ((w00 + 2.f * w10 + 4.f * w20) + 2.f * (w01 + 2.f * w11 + 4.f * w21) + 4.f * (w02 + 2.f * w12 + 4.f * w22)) / 576.f;
    out34 = ((w00 + 2.f * w10 + 4.f * w20) + 2.f * (-w01 - 2.f * w11 - 4.f * w21) + 4.f * (w02 + 2.f * w12 + 4.f * w22)) / 576.f;
    out35 = (w02 + 2.f * w12 + 4.f * w22) / 24.f;

    // Row 4
    out40 = (w00 - 2.f * w10 + 4.f * w20) / 96.f;
    out41 = (-w00 + 2.f * w10 - 4.f * w20 - w01 + 2.f * w11 - 4.f * w21 - w02 + 2.f * w12 - 4.f * w22) / 144.f;
    out42 = (-w00 + 2.f * w10 - 4.f * w20 + w01 - 2.f * w11 + 4.f * w21 - w02 + 2.f * w12 - 4.f * w22) / 144.f;
    out43 = ((w00 - 2.f * w10 + 4.f * w20) + 2.f * (w01 - 2.f * w11 + 4.f * w21) + 4.f * (w02 - 2.f * w12 + 4.f * w22)) / 576.f;
    out44 = ((w00 - 2.f * w10 + 4.f * w20) + 2.f * (-w01 + 2.f * w11 - 4.f * w21) + 4.f * (w02 - 2.f * w12 + 4.f * w22)) / 576.f;
    out45 = (w02 - 2.f * w12 + 4.f * w22) / 24.f;

    // Row 5
    out50 = (w20) / 4.f;
    out51 = (-w20 - w21 - w22) / 6.f;
    out52 = (-w20 + w21 - w22) / 6.f;
    out53 = (w20 + 2.f * w21 + 4.f * w22) / 24.f;
    out54 = (w20 - 2.f * w21 + 4.f * w22) / 24.f;
    out55 = (w22);

    int x0 = get_global_id(2); // idx filter
    int y0 = get_global_id(0); // idx channel

    // Get output address
    __global uchar *dst_addr = dst_ptr + dst_offset_first_element_in_bytes + x0 * dst_stride_x + y0 * dst_stride_y;

    // Store the values across the channels
    *(__global float *)(dst_addr + 0 * dst_stride_z)  = out00;
    *(__global float *)(dst_addr + 1 * dst_stride_z)  = out01;
    *(__global float *)(dst_addr + 2 * dst_stride_z)  = out02;
    *(__global float *)(dst_addr + 3 * dst_stride_z)  = out03;
    *(__global float *)(dst_addr + 4 * dst_stride_z)  = out04;
    *(__global float *)(dst_addr + 5 * dst_stride_z)  = out05;
    *(__global float *)(dst_addr + 6 * dst_stride_z)  = out10;
    *(__global float *)(dst_addr + 7 * dst_stride_z)  = out11;
    *(__global float *)(dst_addr + 8 * dst_stride_z)  = out12;
    *(__global float *)(dst_addr + 9 * dst_stride_z)  = out13;
    *(__global float *)(dst_addr + 10 * dst_stride_z) = out14;
    *(__global float *)(dst_addr + 11 * dst_stride_z) = out15;
    *(__global float *)(dst_addr + 12 * dst_stride_z) = out20;
    *(__global float *)(dst_addr + 13 * dst_stride_z) = out21;
    *(__global float *)(dst_addr + 14 * dst_stride_z) = out22;
    *(__global float *)(dst_addr + 15 * dst_stride_z) = out23;
    *(__global float *)(dst_addr + 16 * dst_stride_z) = out24;
    *(__global float *)(dst_addr + 17 * dst_stride_z) = out25;
    *(__global float *)(dst_addr + 18 * dst_stride_z) = out30;
    *(__global float *)(dst_addr + 19 * dst_stride_z) = out31;
    *(__global float *)(dst_addr + 20 * dst_stride_z) = out32;
    *(__global float *)(dst_addr + 21 * dst_stride_z) = out33;
    *(__global float *)(dst_addr + 22 * dst_stride_z) = out34;
    *(__global float *)(dst_addr + 23 * dst_stride_z) = out35;
    *(__global float *)(dst_addr + 24 * dst_stride_z) = out40;
    *(__global float *)(dst_addr + 25 * dst_stride_z) = out41;
    *(__global float *)(dst_addr + 26 * dst_stride_z) = out42;
    *(__global float *)(dst_addr + 27 * dst_stride_z) = out43;
    *(__global float *)(dst_addr + 28 * dst_stride_z) = out44;
    *(__global float *)(dst_addr + 29 * dst_stride_z) = out45;
    *(__global float *)(dst_addr + 30 * dst_stride_z) = out50;
    *(__global float *)(dst_addr + 31 * dst_stride_z) = out51;
    *(__global float *)(dst_addr + 32 * dst_stride_z) = out52;
    *(__global float *)(dst_addr + 33 * dst_stride_z) = out53;
    *(__global float *)(dst_addr + 34 * dst_stride_z) = out54;
    *(__global float *)(dst_addr + 35 * dst_stride_z) = out55;
}
/** This OpenCL kernel performs Winograd filter transform 5x5 when the data layout is NCHW and the output tile is 4x4
 *
 * @note In order to correctly split the input tensor in batches, its dimension across the Z axis (channels for NCHW, height for NHWC) must be passed at compile time using -DSRC_DIM_Z: e.g. -DSRC_DIM_Z=64
 *
 * @param[in]  src_ptr                           Pointer to the source tensor. Supported data types: F32
 * @param[in]  src_stride_x                      Stride of the source tensor in X dimension (in bytes)
 * @param[in]  src_step_x                        src_stride_x * number of elements along X processed per workitem(in bytes)
 * @param[in]  src_stride_y                      Stride of the source tensor in Y dimension (in bytes)
 * @param[in]  src_step_y                        src_stride_y * number of elements along Y processed per workitem(in bytes)
 * @param[in]  src_stride_z                      Stride of the source tensor in Z dimension (in bytes)
 * @param[in]  src_step_z                        src_stride_z * number of elements along Z processed per workitem(in bytes)
 * @param[in]  src_stride_w                      Stride of the source tensor in W dimension (in bytes)
 * @param[in]  src_step_w                        src_stride_w * number of elements along W processed per workitem(in bytes)
 * @param[in]  src_offset_first_element_in_bytes The offset of the first element in the source tensor
 * @param[out] dst_ptr                           Pointer to the destination tensor. Supported data types: same as @p src_ptr
 * @param[in]  dst_stride_x                      Stride of the destination tensor in X dimension (in bytes)
 * @param[in]  dst_step_x                        dst_stride_x * number of elements along X processed per workitem(in bytes)
 * @param[in]  dst_stride_y                      Stride of the destination tensor in Y dimension (in bytes)
 * @param[in]  dst_step_y                        dst_stride_y * number of elements along Y processed per workitem(in bytes)
 * @param[in]  src_stride_z                      Stride of the source tensor in Z dimension (in bytes)
 * @param[in]  src_step_z                        src_stride_z * number of elements along Z processed per workitem(in bytes)
 * @param[in]  dst_offset_first_element_in_bytes The offset of the first element in the destination tensor
 */
__kernel void winograd_filter_transform_4x4_5x5_nchw(
    TENSOR4D_DECLARATION(src),
    TENSOR3D_DECLARATION(dst))
{
    Tensor4D src = CONVERT_TO_TENSOR4D_STRUCT(src, SRC_DIM_Z);

    const __global uchar *src_addr = tensor4D_offset(&src, 0, 0, 0, 0);

    // Load the values from the input tensor
    const char   stride_x = 4 * sizeof(float); // Used for accessing the last value in each row
    const uchar8 stride_y = (uchar8)(0, 1, 2, 3, 4, 0, 0, 0) * (uchar8)src_stride_y;

    float4 w00 = vload4(0, (__global float *)(src_addr + stride_y.s0));
    float  w01 = *((__global float *)(src_addr + stride_y.s0 + stride_x));
    float4 w10 = vload4(0, (__global float *)(src_addr + stride_y.s1));
    float  w11 = *((__global float *)(src_addr + stride_y.s1 + stride_x));
    float4 w20 = vload4(0, (__global float *)(src_addr + stride_y.s2));
    float  w21 = *((__global float *)(src_addr + stride_y.s2 + stride_x));
    float4 w30 = vload4(0, (__global float *)(src_addr + stride_y.s3));
    float  w31 = *((__global float *)(src_addr + stride_y.s3 + stride_x));
    float4 w40 = vload4(0, (__global float *)(src_addr + stride_y.s4));
    float  w41 = *((__global float *)(src_addr + stride_y.s4 + stride_x));

    // Transform the 3x3 tile in a 8x8 tile
    float8 out0 = 0.0f;
    float8 out1 = 0.0f;
    float8 out2 = 0.0f;
    float8 out3 = 0.0f;
    float8 out4 = 0.0f;
    float8 out5 = 0.0f;
    float8 out6 = 0.0f;
    float8 out7 = 0.0f;

    // Row 0
    out0.s0 = w00.s0;
    out0.s1 = -2.f * (w00.s0 + w00.s1 + w00.s2 + w00.s3 + w01) / 9.f;
    out0.s2 = -2.f * (w00.s0 - w00.s1 + w00.s2 - w00.s3 + w01) / 9.f;
    out0.s3 = (w00.s0 + 2.f * w00.s1 + 4.f * w00.s2 + 8.f * w00.s3 + 16.f * w01) / 90.f;
    out0.s4 = (w00.s0 - 2.f * w00.s1 + 4.f * w00.s2 - 8.f * w00.s3 + 16.f * w01) / 90.f;
    out0.s5 = (16.f * w00.s0 + 8.f * w00.s1 + 4.f * w00.s2 + 2.f * w00.s3 + w01) / 180.f;
    out0.s6 = (16.f * w00.s0 - 8.f * w00.s1 + 4.f * w00.s2 - 2.f * w00.s3 + w01) / 180.f;
    out0.s7 = w01;

    // Row 1
    out1.s0 = -2.f * (w00.s0 + w10.s0 + w20.s0 + w30.s0 + w40.s0) / 9.f;
    out1.s1 = 4.f * ((w00.s0 + w10.s0 + w20.s0 + w30.s0 + w40.s0) + (w00.s1 + w10.s1 + w20.s1 + w30.s1 + w40.s1) + (w00.s2 + w10.s2 + w20.s2 + w30.s2 + w40.s2) +
                     (w00.s3 + w10.s3 + w20.s3 + w30.s3 + w40.s3) + (w01 + w11 + w21 + w31 + w41)) / 81.f;
    out1.s2 = 4.f * ((w00.s0 + w10.s0 + w20.s0 + w30.s0 + w40.s0) - (w00.s1 + w10.s1 + w20.s1 + w30.s1 + w40.s1) + (w00.s2 + w10.s2 + w20.s2 + w30.s2 + w40.s2) -
                     (w00.s3 + w10.s3 + w20.s3 + w30.s3 + w40.s3) + (w01 + w11 + w21 + w31 + w41)) / 81.f;
    out1.s3 = -((w00.s0 + w10.s0 + w20.s0 + w30.s0 + w40.s0) + 2.f * (w00.s1 + w10.s1 + w20.s1 + w30.s1 + w40.s1) + 4.f * (w00.s2 + w10.s2 + w20.s2 + w30.s2 + w40.s2) + 8.f *
                (w00.s3 + w10.s3 + w20.s3 + w30.s3 + w40.s3) + 16.f * (w01 + w11 + w21 + w31 + w41)) / 405.f;
    out1.s4 = -((w00.s0 + w10.s0 + w20.s0 + w30.s0 + w40.s0) - 2.f * (w00.s1 + w10.s1 + w20.s1 + w30.s1 + w40.s1) + 4.f * (w00.s2 + w10.s2 + w20.s2 + w30.s2 + w40.s2) - 8.f *
                (w00.s3 + w10.s3 + w20.s3 + w30.s3 + w40.s3) + 16.f * (w01 + w11 + w21 + w31 + w41)) / 405.f;
    out1.s5 = -(16.f * (w00.s0 + w10.s0 + w20.s0 + w30.s0 + w40.s0) + 8.f * (w00.s1 + w10.s1 + w20.s1 + w30.s1 + w40.s1) + 4.f * (w00.s2 + w10.s2 + w20.s2 + w30.s2 + w40.s2) + 2.f *
                (w00.s3 + w10.s3 + w20.s3 + w30.s3 + w40.s3) + (w01 + w11 + w21 + w31 + w41)) / 810.f;
    out1.s6 = -(16.f * (w00.s0 + w10.s0 + w20.s0 + w30.s0 + w40.s0) - 8.f * (w00.s1 + w10.s1 + w20.s1 + w30.s1 + w40.s1) + 4.f * (w00.s2 + w10.s2 + w20.s2 + w30.s2 + w40.s2) - 2.f *
                (w00.s3 + w10.s3 + w20.s3 + w30.s3 + w40.s3) + (w01 + w11 + w21 + w31 + w41)) / 810.f;
    out1.s7 = -2.f * (w01 + w11 + w21 + w31 + w41) / 9.f;

    // Row 2
    out2.s0 = -2.f * (w00.s0 - w10.s0 + w20.s0 - w30.s0 + w40.s0) / 9.f;
    out2.s1 = 4.f * ((w00.s0 - w10.s0 + w20.s0 - w30.s0 + w40.s0) + (w00.s1 - w10.s1 + w20.s1 - w30.s1 + w40.s1) + (w00.s2 - w10.s2 + w20.s2 - w30.s2 + w40.s2) +
                     (w00.s3 - w10.s3 + w20.s3 - w30.s3 + w40.s3) + (w01 - w11 + w21 - w31 + w41)) / 81.f;
    out2.s2 = 4.f * ((w00.s0 - w10.s0 + w20.s0 - w30.s0 + w40.s0) - (w00.s1 - w10.s1 + w20.s1 - w30.s1 + w40.s1) + (w00.s2 - w10.s2 + w20.s2 - w30.s2 + w40.s2) -
                     (w00.s3 - w10.s3 + w20.s3 - w30.s3 + w40.s3) + (w01 - w11 + w21 - w31 + w41)) / 81.f;
    out2.s3 = -((w00.s0 - w10.s0 + w20.s0 - w30.s0 + w40.s0) + 2.f * (w00.s1 - w10.s1 + w20.s1 - w30.s1 + w40.s1) + 4.f * (w00.s2 - w10.s2 + w20.s2 - w30.s2 + w40.s2) + 8.f *
                (w00.s3 - w10.s3 + w20.s3 - w30.s3 + w40.s3) + 16.f * (w01 - w11 + w21 - w31 + w41)) / 405.f;
    out2.s4 = -((w00.s0 - w10.s0 + w20.s0 - w30.s0 + w40.s0) - 2.f * (w00.s1 - w10.s1 + w20.s1 - w30.s1 + w40.s1) + 4.f * (w00.s2 - w10.s2 + w20.s2 - w30.s2 + w40.s2) - 8.f *
                (w00.s3 - w10.s3 + w20.s3 - w30.s3 + w40.s3) + 16.f * (w01 - w11 + w21 - w31 + w41)) / 405.f;
    out2.s5 = -(16.f * (w00.s0 - w10.s0 + w20.s0 - w30.s0 + w40.s0) + 8.f * (w00.s1 - w10.s1 + w20.s1 - w30.s1 + w40.s1) + 4.f * (w00.s2 - w10.s2 + w20.s2 - w30.s2 + w40.s2) + 2.f *
                (w00.s3 - w10.s3 + w20.s3 - w30.s3 + w40.s3) + (w01 - w11 + w21 - w31 + w41)) / 810.f;
    out2.s6 = -(16.f * (w00.s0 - w10.s0 + w20.s0 - w30.s0 + w40.s0) - 8.f * (w00.s1 - w10.s1 + w20.s1 - w30.s1 + w40.s1) + 4.f * (w00.s2 - w10.s2 + w20.s2 - w30.s2 + w40.s2) - 2.f *
                (w00.s3 - w10.s3 + w20.s3 - w30.s3 + w40.s3) + (w01 - w11 + w21 - w31 + w41)) / 810.f;
    out2.s7 = -2.f * (w01 - w11 + w21 - w31 + w41) / 9.f;

    // Row 3
    out3.s0 = (w00.s0 + 2.f * w10.s0 + 4.f * w20.s0 + 8.f * w30.s0 + 16.f * w40.s0) / 90.f;
    out3.s1 = -((w00.s0 + 2.f * w10.s0 + 4.f * w20.s0 + 8.f * w30.s0 + 16.f * w40.s0) + (w00.s1 + 2.f * w10.s1 + 4.f * w20.s1 + 8.f * w30.s1 + 16.f * w40.s1) +
                (w00.s2 + 2.f * w10.s2 + 4.f * w20.s2 + 8.f * w30.s2 + 16.f * w40.s2) + (w00.s3 + 2.f * w10.s3 + 4.f * w20.s3 + 8.f * w30.s3 + 16.f * w40.s3) +
                (w01 + 2.f * w11 + 4.f * w21 + 8.f * w31 + 16.f * w41)) / 405.f;
    out3.s2 = -((w00.s0 + 2.f * w10.s0 + 4.f * w20.s0 + 8.f * w30.s0 + 16.f * w40.s0) - (w00.s1 + 2.f * w10.s1 + 4.f * w20.s1 + 8.f * w30.s1 + 16.f * w40.s1) +
                (w00.s2 + 2.f * w10.s2 + 4.f * w20.s2 + 8.f * w30.s2 + 16.f * w40.s2) - (w00.s3 + 2.f * w10.s3 + 4.f * w20.s3 + 8.f * w30.s3 + 16.f * w40.s3) +
                (w01 + 2.f * w11 + 4.f * w21 + 8.f * w31 + 16.f * w41)) / 405.f;
    out3.s3 = ((w00.s0 + 2.f * w10.s0 + 4.f * w20.s0 + 8.f * w30.s0 + 16.f * w40.s0) + 2.f * (w00.s1 + 2.f * w10.s1 + 4.f * w20.s1 + 8.f * w30.s1 + 16.f * w40.s1) + 4.f *
               (w00.s2 + 2.f * w10.s2 + 4.f * w20.s2 + 8.f * w30.s2 + 16.f * w40.s2) + 8.f * (w00.s3 + 2.f * w10.s3 + 4.f * w20.s3 + 8.f * w30.s3 + 16.f * w40.s3) + 16.f *
               (w01 + 2.f * w11 + 4.f * w21 + 8.f * w31 + 16.f * w41)) / 8100.f;
    out3.s4 = ((w00.s0 + 2.f * w10.s0 + 4.f * w20.s0 + 8.f * w30.s0 + 16.f * w40.s0) - 2.f * (w00.s1 + 2.f * w10.s1 + 4.f * w20.s1 + 8.f * w30.s1 + 16.f * w40.s1) + 4.f *
               (w00.s2 + 2.f * w10.s2 + 4.f * w20.s2 + 8.f * w30.s2 + 16.f * w40.s2) - 8.f * (w00.s3 + 2.f * w10.s3 + 4.f * w20.s3 + 8.f * w30.s3 + 16.f * w40.s3) + 16.f *
               (w01 + 2.f * w11 + 4.f * w21 + 8.f * w31 + 16.f * w41)) / 8100.f;
    out3.s5 = (16.f * (w00.s0 + 2.f * w10.s0 + 4.f * w20.s0 + 8.f * w30.s0 + 16.f * w40.s0) + 8.f * (w00.s1 + 2.f * w10.s1 + 4.f * w20.s1 + 8.f * w30.s1 + 16.f * w40.s1) + 4.f *
               (w00.s2 + 2.f * w10.s2 + 4.f * w20.s2 + 8.f * w30.s2 + 16.f * w40.s2) + 2.f * (w00.s3 + 2.f * w10.s3 + 4.f * w20.s3 + 8.f * w30.s3 + 16.f * w40.s3) +
               (w01 + 2.f * w11 + 4.f * w21 + 8.f * w31 + 16.f * w41)) / 16200.f;
    out3.s6 = (16.f * (w00.s0 + 2.f * w10.s0 + 4.f * w20.s0 + 8.f * w30.s0 + 16.f * w40.s0) - 8.f * (w00.s1 + 2.f * w10.s1 + 4.f * w20.s1 + 8.f * w30.s1 + 16.f * w40.s1) + 4.f *
               (w00.s2 + 2.f * w10.s2 + 4.f * w20.s2 + 8.f * w30.s2 + 16.f * w40.s2) - 2.f * (w00.s3 + 2.f * w10.s3 + 4.f * w20.s3 + 8.f * w30.s3 + 16.f * w40.s3) +
               (w01 + 2.f * w11 + 4.f * w21 + 8.f * w31 + 16.f * w41)) / 16200.f;
    out3.s7 = (w01 + 2.f * w11 + 4.f * w21 + 8.f * w31 + 16.f * w41) / 90.f;

    // Row 4
    out4.s0 = (w00.s0 - 2.f * w10.s0 + 4.f * w20.s0 - 8.f * w30.s0 + 16.f * w40.s0) / 90.f;
    out4.s1 = -((w00.s0 - 2.f * w10.s0 + 4.f * w20.s0 - 8.f * w30.s0 + 16.f * w40.s0) + (w00.s1 - 2.f * w10.s1 + 4.f * w20.s1 - 8.f * w30.s1 + 16.f * w40.s1) +
                (w00.s2 - 2.f * w10.s2 + 4.f * w20.s2 - 8.f * w30.s2 + 16.f * w40.s2) + (w00.s3 - 2.f * w10.s3 + 4.f * w20.s3 - 8.f * w30.s3 + 16.f * w40.s3) +
                (w01 - 2.f * w11 + 4.f * w21 - 8.f * w31 + 16.f * w41)) / 405.f;
    out4.s2 = -((w00.s0 - 2.f * w10.s0 + 4.f * w20.s0 - 8.f * w30.s0 + 16.f * w40.s0) - (w00.s1 - 2.f * w10.s1 + 4.f * w20.s1 - 8.f * w30.s1 + 16.f * w40.s1) +
                (w00.s2 - 2.f * w10.s2 + 4.f * w20.s2 - 8.f * w30.s2 + 16.f * w40.s2) - (w00.s3 - 2.f * w10.s3 + 4.f * w20.s3 - 8.f * w30.s3 + 16.f * w40.s3) +
                (w01 - 2.f * w11 + 4.f * w21 - 8.f * w31 + 16.f * w41)) / 405.f;
    out4.s3 = ((w00.s0 - 2.f * w10.s0 + 4.f * w20.s0 - 8.f * w30.s0 + 16.f * w40.s0) + 2.f * (w00.s1 - 2.f * w10.s1 + 4.f * w20.s1 - 8.f * w30.s1 + 16.f * w40.s1) + 4.f *
               (w00.s2 - 2.f * w10.s2 + 4.f * w20.s2 - 8.f * w30.s2 + 16.f * w40.s2) + 8.f * (w00.s3 - 2.f * w10.s3 + 4.f * w20.s3 - 8.f * w30.s3 + 16.f * w40.s3) + 16.f *
               (w01 - 2.f * w11 + 4.f * w21 - 8.f * w31 + 16.f * w41)) / 8100.f;
    out4.s4 = ((w00.s0 - 2.f * w10.s0 + 4.f * w20.s0 - 8.f * w30.s0 + 16.f * w40.s0) - 2.f * (w00.s1 - 2.f * w10.s1 + 4.f * w20.s1 - 8.f * w30.s1 + 16.f * w40.s1) + 4.f *
               (w00.s2 - 2.f * w10.s2 + 4.f * w20.s2 - 8.f * w30.s2 + 16.f * w40.s2) - 8.f * (w00.s3 - 2.f * w10.s3 + 4.f * w20.s3 - 8.f * w30.s3 + 16.f * w40.s3) + 16.f *
               (w01 - 2.f * w11 + 4.f * w21 - 8.f * w31 + 16.f * w41)) / 8100.f;
    out4.s5 = (16.f * (w00.s0 - 2.f * w10.s0 + 4.f * w20.s0 - 8.f * w30.s0 + 16.f * w40.s0) + 8.f * (w00.s1 - 2.f * w10.s1 + 4.f * w20.s1 - 8.f * w30.s1 + 16.f * w40.s1) + 4.f *
               (w00.s2 - 2.f * w10.s2 + 4.f * w20.s2 - 8.f * w30.s2 + 16.f * w40.s2) + 2.f * (w00.s3 - 2.f * w10.s3 + 4.f * w20.s3 - 8.f * w30.s3 + 16.f * w40.s3) +
               (w01 - 2.f * w11 + 4.f * w21 - 8.f * w31 + 16.f * w41)) / 16200.f;
    out4.s6 = (16.f * (w00.s0 - 2.f * w10.s0 + 4.f * w20.s0 - 8.f * w30.s0 + 16.f * w40.s0) - 8.f * (w00.s1 - 2.f * w10.s1 + 4.f * w20.s1 - 8.f * w30.s1 + 16.f * w40.s1) + 4.f *
               (w00.s2 - 2.f * w10.s2 + 4.f * w20.s2 - 8.f * w30.s2 + 16.f * w40.s2) - 2.f * (w00.s3 - 2.f * w10.s3 + 4.f * w20.s3 - 8.f * w30.s3 + 16.f * w40.s3) +
               (w01 - 2.f * w11 + 4.f * w21 - 8.f * w31 + 16.f * w41)) / 16200.f;
    out4.s7 = (w01 - 2.f * w11 + 4.f * w21 - 8.f * w31 + 16.f * w41) / 90.f;

    // Row 5
    out5.s0 = (16.f * w00.s0 + 8.f * w10.s0 + 4.f * w20.s0 + 2.f * w30.s0 + w40.s0) / 180.f;
    out5.s1 = -((16.f * w00.s0 + 8.f * w10.s0 + 4.f * w20.s0 + 2.f * w30.s0 + w40.s0) + (16.f * w00.s1 + 8.f * w10.s1 + 4.f * w20.s1 + 2.f * w30.s1 + w40.s1) +
                (16.f * w00.s2 + 8.f * w10.s2 + 4.f * w20.s2 + 2.f * w30.s2 + w40.s2) + (16.f * w00.s3 + 8.f * w10.s3 + 4.f * w20.s3 + 2.f * w30.s3 + w40.s3) +
                (16.f * w01 + 8.f * w11 + 4.f * w21 + 2.f * w31 + w41)) / 810.f;
    out5.s2 = -((16.f * w00.s0 + 8.f * w10.s0 + 4.f * w20.s0 + 2.f * w30.s0 + w40.s0) - (16.f * w00.s1 + 8.f * w10.s1 + 4.f * w20.s1 + 2.f * w30.s1 + w40.s1) +
                (16.f * w00.s2 + 8.f * w10.s2 + 4.f * w20.s2 + 2.f * w30.s2 + w40.s2) - (16.f * w00.s3 + 8.f * w10.s3 + 4.f * w20.s3 + 2.f * w30.s3 + w40.s3) +
                (16.f * w01 + 8.f * w11 + 4.f * w21 + 2.f * w31 + w41)) / 810.f;
    out5.s3 = ((16.f * w00.s0 + 8.f * w10.s0 + 4.f * w20.s0 + 2.f * w30.s0 + w40.s0) + 2.f * (16.f * w00.s1 + 8.f * w10.s1 + 4.f * w20.s1 + 2.f * w30.s1 + w40.s1) + 4.f *
               (16.f * w00.s2 + 8.f * w10.s2 + 4.f * w20.s2 + 2.f * w30.s2 + w40.s2) + 8.f * (16.f * w00.s3 + 8.f * w10.s3 + 4.f * w20.s3 + 2.f * w30.s3 + w40.s3) + 16.f *
               (16.f * w01 + 8.f * w11 + 4.f * w21 + 2.f * w31 + w41)) / 16200.f;
    out5.s4 = ((16.f * w00.s0 + 8.f * w10.s0 + 4.f * w20.s0 + 2.f * w30.s0 + w40.s0) - 2.f * (16.f * w00.s1 + 8.f * w10.s1 + 4.f * w20.s1 + 2.f * w30.s1 + w40.s1) + 4.f *
               (16.f * w00.s2 + 8.f * w10.s2 + 4.f * w20.s2 + 2.f * w30.s2 + w40.s2) - 8.f * (16.f * w00.s3 + 8.f * w10.s3 + 4.f * w20.s3 + 2.f * w30.s3 + w40.s3) + 16.f *
               (16.f * w01 + 8.f * w11 + 4.f * w21 + 2.f * w31 + w41)) / 16200.f;
    out5.s5 = (16.f * (16.f * w00.s0 + 8.f * w10.s0 + 4.f * w20.s0 + 2.f * w30.s0 + w40.s0) + 8.f * (16.f * w00.s1 + 8.f * w10.s1 + 4.f * w20.s1 + 2.f * w30.s1 + w40.s1) + 4.f *
               (16.f * w00.s2 + 8.f * w10.s2 + 4.f * w20.s2 + 2.f * w30.s2 + w40.s2) + 2.f * (16.f * w00.s3 + 8.f * w10.s3 + 4.f * w20.s3 + 2.f * w30.s3 + w40.s3) +
               (16.f * w01 + 8.f * w11 + 4.f * w21 + 2.f * w31 + w41)) / 32400.f;
    out5.s6 = (16.f * (16.f * w00.s0 + 8.f * w10.s0 + 4.f * w20.s0 + 2.f * w30.s0 + w40.s0) - 8.f * (16.f * w00.s1 + 8.f * w10.s1 + 4.f * w20.s1 + 2.f * w30.s1 + w40.s1) + 4.f *
               (16.f * w00.s2 + 8.f * w10.s2 + 4.f * w20.s2 + 2.f * w30.s2 + w40.s2) - 2.f * (16.f * w00.s3 + 8.f * w10.s3 + 4.f * w20.s3 + 2.f * w30.s3 + w40.s3) +
               (16.f * w01 + 8.f * w11 + 4.f * w21 + 2.f * w31 + w41)) / 32400.f;
    out5.s7 = (16.f * w01 + 8.f * w11 + 4.f * w21 + 2.f * w31 + w41) / 180.f;

    // Row 6
    out6.s0 = (16.f * w00.s0 - 8.f * w10.s0 + 4.f * w20.s0 - 2.f * w30.s0 + w40.s0) / 180.f;
    out6.s1 = -((16.f * w00.s0 - 8.f * w10.s0 + 4.f * w20.s0 - 2.f * w30.s0 + w40.s0) + (16.f * w00.s1 - 8.f * w10.s1 + 4.f * w20.s1 - 2.f * w30.s1 + w40.s1) +
                (16.f * w00.s2 - 8.f * w10.s2 + 4.f * w20.s2 - 2.f * w30.s2 + w40.s2) + (16.f * w00.s3 - 8.f * w10.s3 + 4.f * w20.s3 - 2.f * w30.s3 + w40.s3) +
                (16.f * w01 - 8.f * w11 + 4.f * w21 - 2.f * w31 + w41)) / 810.f;
    out6.s2 = -((16.f * w00.s0 - 8.f * w10.s0 + 4.f * w20.s0 - 2.f * w30.s0 + w40.s0) - (16.f * w00.s1 - 8.f * w10.s1 + 4.f * w20.s1 - 2.f * w30.s1 + w40.s1) +
                (16.f * w00.s2 - 8.f * w10.s2 + 4.f * w20.s2 - 2.f * w30.s2 + w40.s2) - (16.f * w00.s3 - 8.f * w10.s3 + 4.f * w20.s3 - 2.f * w30.s3 + w40.s3) +
                (16.f * w01 - 8.f * w11 + 4.f * w21 - 2.f * w31 + w41)) / 810.f;
    out6.s3 = ((16.f * w00.s0 - 8.f * w10.s0 + 4.f * w20.s0 - 2.f * w30.s0 + w40.s0) + 2.f * (16.f * w00.s1 - 8.f * w10.s1 + 4.f * w20.s1 - 2.f * w30.s1 + w40.s1) + 4.f *
               (16.f * w00.s2 - 8.f * w10.s2 + 4.f * w20.s2 - 2.f * w30.s2 + w40.s2) + 8.f * (16.f * w00.s3 - 8.f * w10.s3 + 4.f * w20.s3 - 2.f * w30.s3 + w40.s3) + 16.f *
               (16.f * w01 - 8.f * w11 + 4.f * w21 - 2.f * w31 + w41)) / 16200.f;
    out6.s4 = ((16.f * w00.s0 - 8.f * w10.s0 + 4.f * w20.s0 - 2.f * w30.s0 + w40.s0) - 2.f * (16.f * w00.s1 - 8.f * w10.s1 + 4.f * w20.s1 - 2.f * w30.s1 + w40.s1) + 4.f *
               (16.f * w00.s2 - 8.f * w10.s2 + 4.f * w20.s2 - 2.f * w30.s2 + w40.s2) - 8.f * (16.f * w00.s3 - 8.f * w10.s3 + 4.f * w20.s3 - 2.f * w30.s3 + w40.s3) + 16.f *
               (16.f * w01 - 8.f * w11 + 4.f * w21 - 2.f * w31 + w41)) / 16200.f;
    out6.s5 = (16.f * (16.f * w00.s0 - 8.f * w10.s0 + 4.f * w20.s0 - 2.f * w30.s0 + w40.s0) + 8.f * (16.f * w00.s1 - 8.f * w10.s1 + 4.f * w20.s1 - 2.f * w30.s1 + w40.s1) + 4.f *
               (16.f * w00.s2 - 8.f * w10.s2 + 4.f * w20.s2 - 2.f * w30.s2 + w40.s2) + 2.f * (16.f * w00.s3 - 8.f * w10.s3 + 4.f * w20.s3 - 2.f * w30.s3 + w40.s3) +
               (16.f * w01 - 8.f * w11 + 4.f * w21 - 2.f * w31 + w41)) / 32400.f;
    out6.s6 = (16.f * (16.f * w00.s0 - 8.f * w10.s0 + 4.f * w20.s0 - 2.f * w30.s0 + w40.s0) - 8.f * (16.f * w00.s1 - 8.f * w10.s1 + 4.f * w20.s1 - 2.f * w30.s1 + w40.s1) + 4.f *
               (16.f * w00.s2 - 8.f * w10.s2 + 4.f * w20.s2 - 2.f * w30.s2 + w40.s2) - 2.f * (16.f * w00.s3 - 8.f * w10.s3 + 4.f * w20.s3 - 2.f * w30.s3 + w40.s3) +
               (16.f * w01 - 8.f * w11 + 4.f * w21 - 2.f * w31 + w41)) / 32400.f;
    out6.s7 = (16.f * w01 - 8.f * w11 + 4.f * w21 - 2.f * w31 + w41) / 180.f;

    // Row 7
    out7.s0 = w40.s0;
    out7.s1 = -2.f * (w40.s0 + w40.s1 + w40.s2 + w40.s3 + w41) / 9.f;
    out7.s2 = -2.f * (w40.s0 - w40.s1 + w40.s2 - w40.s3 + w41) / 9.f;
    out7.s3 = (w40.s0 + 2.f * w40.s1 + 4.f * w40.s2 + 8.f * w40.s3 + 16.f * w41) / 90.f;
    out7.s4 = (w40.s0 - 2.f * w40.s1 + 4.f * w40.s2 - 8.f * w40.s3 + 16.f * w41) / 90.f;
    out7.s5 = (16.f * w40.s0 + 8.f * w40.s1 + 4.f * w40.s2 + 2.f * w40.s3 + w41) / 180.f;
    out7.s6 = (16.f * w40.s0 - 8.f * w40.s1 + 4.f * w40.s2 - 2.f * w40.s3 + w41) / 180.f;
    out7.s7 = w41;

    int z  = get_global_id(2);
    int x0 = z / SRC_DIM_Z; // idx filter
    int y0 = z % SRC_DIM_Z; // idx channel

    // Get output address
    __global uchar *dst_addr = dst_ptr + dst_offset_first_element_in_bytes + x0 * dst_stride_x + y0 * dst_stride_y;

    // Store the 64 values across the 64 channels
    *(__global float *)(dst_addr + 0 * dst_stride_z)  = out0.s0;
    *(__global float *)(dst_addr + 1 * dst_stride_z)  = out0.s1;
    *(__global float *)(dst_addr + 2 * dst_stride_z)  = out0.s2;
    *(__global float *)(dst_addr + 3 * dst_stride_z)  = out0.s3;
    *(__global float *)(dst_addr + 4 * dst_stride_z)  = out0.s4;
    *(__global float *)(dst_addr + 5 * dst_stride_z)  = out0.s5;
    *(__global float *)(dst_addr + 6 * dst_stride_z)  = out0.s6;
    *(__global float *)(dst_addr + 7 * dst_stride_z)  = out0.s7;
    *(__global float *)(dst_addr + 8 * dst_stride_z)  = out1.s0;
    *(__global float *)(dst_addr + 9 * dst_stride_z)  = out1.s1;
    *(__global float *)(dst_addr + 10 * dst_stride_z) = out1.s2;
    *(__global float *)(dst_addr + 11 * dst_stride_z) = out1.s3;
    *(__global float *)(dst_addr + 12 * dst_stride_z) = out1.s4;
    *(__global float *)(dst_addr + 13 * dst_stride_z) = out1.s5;
    *(__global float *)(dst_addr + 14 * dst_stride_z) = out1.s6;
    *(__global float *)(dst_addr + 15 * dst_stride_z) = out1.s7;
    *(__global float *)(dst_addr + 16 * dst_stride_z) = out2.s0;
    *(__global float *)(dst_addr + 17 * dst_stride_z) = out2.s1;
    *(__global float *)(dst_addr + 18 * dst_stride_z) = out2.s2;
    *(__global float *)(dst_addr + 19 * dst_stride_z) = out2.s3;
    *(__global float *)(dst_addr + 20 * dst_stride_z) = out2.s4;
    *(__global float *)(dst_addr + 21 * dst_stride_z) = out2.s5;
    *(__global float *)(dst_addr + 22 * dst_stride_z) = out2.s6;
    *(__global float *)(dst_addr + 23 * dst_stride_z) = out2.s7;
    *(__global float *)(dst_addr + 24 * dst_stride_z) = out3.s0;
    *(__global float *)(dst_addr + 25 * dst_stride_z) = out3.s1;
    *(__global float *)(dst_addr + 26 * dst_stride_z) = out3.s2;
    *(__global float *)(dst_addr + 27 * dst_stride_z) = out3.s3;
    *(__global float *)(dst_addr + 28 * dst_stride_z) = out3.s4;
    *(__global float *)(dst_addr + 29 * dst_stride_z) = out3.s5;
    *(__global float *)(dst_addr + 30 * dst_stride_z) = out3.s6;
    *(__global float *)(dst_addr + 31 * dst_stride_z) = out3.s7;
    *(__global float *)(dst_addr + 32 * dst_stride_z) = out4.s0;
    *(__global float *)(dst_addr + 33 * dst_stride_z) = out4.s1;
    *(__global float *)(dst_addr + 34 * dst_stride_z) = out4.s2;
    *(__global float *)(dst_addr + 35 * dst_stride_z) = out4.s3;
    *(__global float *)(dst_addr + 36 * dst_stride_z) = out4.s4;
    *(__global float *)(dst_addr + 37 * dst_stride_z) = out4.s5;
    *(__global float *)(dst_addr + 38 * dst_stride_z) = out4.s6;
    *(__global float *)(dst_addr + 39 * dst_stride_z) = out4.s7;
    *(__global float *)(dst_addr + 40 * dst_stride_z) = out5.s0;
    *(__global float *)(dst_addr + 41 * dst_stride_z) = out5.s1;
    *(__global float *)(dst_addr + 42 * dst_stride_z) = out5.s2;
    *(__global float *)(dst_addr + 43 * dst_stride_z) = out5.s3;
    *(__global float *)(dst_addr + 44 * dst_stride_z) = out5.s4;
    *(__global float *)(dst_addr + 45 * dst_stride_z) = out5.s5;
    *(__global float *)(dst_addr + 46 * dst_stride_z) = out5.s6;
    *(__global float *)(dst_addr + 47 * dst_stride_z) = out5.s7;
    *(__global float *)(dst_addr + 48 * dst_stride_z) = out6.s0;
    *(__global float *)(dst_addr + 49 * dst_stride_z) = out6.s1;
    *(__global float *)(dst_addr + 50 * dst_stride_z) = out6.s2;
    *(__global float *)(dst_addr + 51 * dst_stride_z) = out6.s3;
    *(__global float *)(dst_addr + 52 * dst_stride_z) = out6.s4;
    *(__global float *)(dst_addr + 53 * dst_stride_z) = out6.s5;
    *(__global float *)(dst_addr + 54 * dst_stride_z) = out6.s6;
    *(__global float *)(dst_addr + 55 * dst_stride_z) = out6.s7;
    *(__global float *)(dst_addr + 56 * dst_stride_z) = out7.s0;
    *(__global float *)(dst_addr + 57 * dst_stride_z) = out7.s1;
    *(__global float *)(dst_addr + 58 * dst_stride_z) = out7.s2;
    *(__global float *)(dst_addr + 59 * dst_stride_z) = out7.s3;
    *(__global float *)(dst_addr + 60 * dst_stride_z) = out7.s4;
    *(__global float *)(dst_addr + 61 * dst_stride_z) = out7.s5;
    *(__global float *)(dst_addr + 62 * dst_stride_z) = out7.s6;
    *(__global float *)(dst_addr + 63 * dst_stride_z) = out7.s7;
}

/** This OpenCL kernel performs Winograd filter transform 5x5 when the data layout is NHWC and the output tile is 4x4
 *
 * @note In order to correctly split the input tensor in batches, its dimension across the Z axis (channels for NCHW, height for NHWC) must be passed at compile time using -DSRC_DIM_Z: e.g. -DSRC_DIM_Z=64
 *
 * @param[in]  src_ptr                           Pointer to the source tensor. Supported data types: F32
 * @param[in]  src_stride_x                      Stride of the source tensor in X dimension (in bytes)
 * @param[in]  src_step_x                        src_stride_x * number of elements along X processed per workitem(in bytes)
 * @param[in]  src_stride_y                      Stride of the source tensor in Y dimension (in bytes)
 * @param[in]  src_step_y                        src_stride_y * number of elements along Y processed per workitem(in bytes)
 * @param[in]  src_stride_z                      Stride of the source tensor in Z dimension (in bytes)
 * @param[in]  src_step_z                        src_stride_z * number of elements along Z processed per workitem(in bytes)
 * @param[in]  src_stride_w                      Stride of the source tensor in W dimension (in bytes)
 * @param[in]  src_step_w                        src_stride_w * number of elements along W processed per workitem(in bytes)
 * @param[in]  src_offset_first_element_in_bytes The offset of the first element in the source tensor
 * @param[out] dst_ptr                           Pointer to the destination tensor. Supported data types: same as @p src_ptr
 * @param[in]  dst_stride_x                      Stride of the destination tensor in X dimension (in bytes)
 * @param[in]  dst_step_x                        dst_stride_x * number of elements along X processed per workitem(in bytes)
 * @param[in]  dst_stride_y                      Stride of the destination tensor in Y dimension (in bytes)
 * @param[in]  dst_step_y                        dst_stride_y * number of elements along Y processed per workitem(in bytes)
 * @param[in]  src_stride_z                      Stride of the source tensor in Z dimension (in bytes)
 * @param[in]  src_step_z                        src_stride_z * number of elements along Z processed per workitem(in bytes)
 * @param[in]  dst_offset_first_element_in_bytes The offset of the first element in the destination tensor
 */
__kernel void winograd_filter_transform_4x4_5x5_nhwc(
    TENSOR4D_DECLARATION(src),
    TENSOR3D_DECLARATION(dst))
{
    Tensor4D src = CONVERT_TO_TENSOR4D_STRUCT(src, SRC_DIM_Z);

    const __global uchar *src_addr = src_ptr + src_offset_first_element_in_bytes + get_global_id(0) * sizeof(float) + get_global_id(1) * src_step_y + get_global_id(2) * src_step_w;

    // Load the values from the input tensor
    float w00 = *((__global float *)(src_addr + 0 * src_stride_z + 0 * src_stride_y));
    float w01 = *((__global float *)(src_addr + 0 * src_stride_z + 1 * src_stride_y));
    float w02 = *((__global float *)(src_addr + 0 * src_stride_z + 2 * src_stride_y));
    float w03 = *((__global float *)(src_addr + 0 * src_stride_z + 3 * src_stride_y));
    float w04 = *((__global float *)(src_addr + 0 * src_stride_z + 4 * src_stride_y));
    float w10 = *((__global float *)(src_addr + 1 * src_stride_z + 0 * src_stride_y));
    float w11 = *((__global float *)(src_addr + 1 * src_stride_z + 1 * src_stride_y));
    float w12 = *((__global float *)(src_addr + 1 * src_stride_z + 2 * src_stride_y));
    float w13 = *((__global float *)(src_addr + 1 * src_stride_z + 3 * src_stride_y));
    float w14 = *((__global float *)(src_addr + 1 * src_stride_z + 4 * src_stride_y));
    float w20 = *((__global float *)(src_addr + 2 * src_stride_z + 0 * src_stride_y));
    float w21 = *((__global float *)(src_addr + 2 * src_stride_z + 1 * src_stride_y));
    float w22 = *((__global float *)(src_addr + 2 * src_stride_z + 2 * src_stride_y));
    float w23 = *((__global float *)(src_addr + 2 * src_stride_z + 3 * src_stride_y));
    float w24 = *((__global float *)(src_addr + 2 * src_stride_z + 4 * src_stride_y));
    float w30 = *((__global float *)(src_addr + 3 * src_stride_z + 0 * src_stride_y));
    float w31 = *((__global float *)(src_addr + 3 * src_stride_z + 1 * src_stride_y));
    float w32 = *((__global float *)(src_addr + 3 * src_stride_z + 2 * src_stride_y));
    float w33 = *((__global float *)(src_addr + 3 * src_stride_z + 3 * src_stride_y));
    float w34 = *((__global float *)(src_addr + 3 * src_stride_z + 4 * src_stride_y));
    float w40 = *((__global float *)(src_addr + 4 * src_stride_z + 0 * src_stride_y));
    float w41 = *((__global float *)(src_addr + 4 * src_stride_z + 1 * src_stride_y));
    float w42 = *((__global float *)(src_addr + 4 * src_stride_z + 2 * src_stride_y));
    float w43 = *((__global float *)(src_addr + 4 * src_stride_z + 3 * src_stride_y));
    float w44 = *((__global float *)(src_addr + 4 * src_stride_z + 4 * src_stride_y));

    // Transform the 3x3 tile in a 8x8 tile
    float8 out0 = 0.0f;
    float8 out1 = 0.0f;
    float8 out2 = 0.0f;
    float8 out3 = 0.0f;
    float8 out4 = 0.0f;
    float8 out5 = 0.0f;
    float8 out6 = 0.0f;
    float8 out7 = 0.0f;

    // Row 0
    out0.s0 = w00;
    out0.s1 = -2.f * (w00 + w01 + w02 + w03 + w04) / 9.f;
    out0.s2 = -2.f * (w00 - w01 + w02 - w03 + w04) / 9.f;
    out0.s3 = (w00 + 2.f * w01 + 4.f * w02 + 8.f * w03 + 16.f * w04) / 90.f;
    out0.s4 = (w00 - 2.f * w01 + 4.f * w02 - 8.f * w03 + 16.f * w04) / 90.f;
    out0.s5 = (16.f * w00 + 8.f * w01 + 4.f * w02 + 2.f * w03 + w04) / 180.f;
    out0.s6 = (16.f * w00 - 8.f * w01 + 4.f * w02 - 2.f * w03 + w04) / 180.f;
    out0.s7 = w04;

    // Row 1
    out1.s0 = -2.f * (w00 + w10 + w20 + w30 + w40) / 9.f;
    out1.s1 = 4.f * ((w00 + w10 + w20 + w30 + w40) + (w01 + w11 + w21 + w31 + w41) + (w02 + w12 + w22 + w32 + w42) + (w03 + w13 + w23 + w33 + w43) + (w04 + w14 + w24 + w34 + w44)) / 81.f;
    out1.s2 = 4.f * ((w00 + w10 + w20 + w30 + w40) - (w01 + w11 + w21 + w31 + w41) + (w02 + w12 + w22 + w32 + w42) - (w03 + w13 + w23 + w33 + w43) + (w04 + w14 + w24 + w34 + w44)) / 81.f;
    out1.s3 = -((w00 + w10 + w20 + w30 + w40) + 2.f * (w01 + w11 + w21 + w31 + w41) + 4.f * (w02 + w12 + w22 + w32 + w42) + 8.f * (w03 + w13 + w23 + w33 + w43) + 16.f *
                (w04 + w14 + w24 + w34 + w44)) / 405.f;
    out1.s4 = -((w00 + w10 + w20 + w30 + w40) - 2.f * (w01 + w11 + w21 + w31 + w41) + 4.f * (w02 + w12 + w22 + w32 + w42) - 8.f * (w03 + w13 + w23 + w33 + w43) + 16.f *
                (w04 + w14 + w24 + w34 + w44)) / 405.f;
    out1.s5 = -(16.f * (w00 + w10 + w20 + w30 + w40) + 8.f * (w01 + w11 + w21 + w31 + w41) + 4.f * (w02 + w12 + w22 + w32 + w42) + 2.f * (w03 + w13 + w23 + w33 + w43) +
                (w04 + w14 + w24 + w34 + w44)) / 810.f;
    out1.s6 = -(16.f * (w00 + w10 + w20 + w30 + w40) - 8.f * (w01 + w11 + w21 + w31 + w41) + 4.f * (w02 + w12 + w22 + w32 + w42) - 2.f * (w03 + w13 + w23 + w33 + w43) +
                (w04 + w14 + w24 + w34 + w44)) / 810.f;
    out1.s7 = -2.f * (w04 + w14 + w24 + w34 + w44) / 9.f;

    // Row 2
    out2.s0 = -2.f * (w00 - w10 + w20 - w30 + w40) / 9.f;
    out2.s1 = 4.f * ((w00 - w10 + w20 - w30 + w40) + (w01 - w11 + w21 - w31 + w41) + (w02 - w12 + w22 - w32 + w42) + (w03 - w13 + w23 - w33 + w43) + (w04 - w14 + w24 - w34 + w44)) / 81.f;
    out2.s2 = 4.f * ((w00 - w10 + w20 - w30 + w40) - (w01 - w11 + w21 - w31 + w41) + (w02 - w12 + w22 - w32 + w42) - (w03 - w13 + w23 - w33 + w43) + (w04 - w14 + w24 - w34 + w44)) / 81.f;
    out2.s3 = -((w00 - w10 + w20 - w30 + w40) + 2.f * (w01 - w11 + w21 - w31 + w41) + 4.f * (w02 - w12 + w22 - w32 + w42) + 8.f * (w03 - w13 + w23 - w33 + w43) + 16.f *
                (w04 - w14 + w24 - w34 + w44)) / 405.f;
    out2.s4 = -((w00 - w10 + w20 - w30 + w40) - 2.f * (w01 - w11 + w21 - w31 + w41) + 4.f * (w02 - w12 + w22 - w32 + w42) - 8.f * (w03 - w13 + w23 - w33 + w43) + 16.f *
                (w04 - w14 + w24 - w34 + w44)) / 405.f;
    out2.s5 = -(16.f * (w00 - w10 + w20 - w30 + w40) + 8.f * (w01 - w11 + w21 - w31 + w41) + 4.f * (w02 - w12 + w22 - w32 + w42) + 2.f * (w03 - w13 + w23 - w33 + w43) +
                (w04 - w14 + w24 - w34 + w44)) / 810.f;
    out2.s6 = -(16.f * (w00 - w10 + w20 - w30 + w40) - 8.f * (w01 - w11 + w21 - w31 + w41) + 4.f * (w02 - w12 + w22 - w32 + w42) - 2.f * (w03 - w13 + w23 - w33 + w43) +
                (w04 - w14 + w24 - w34 + w44)) / 810.f;
    out2.s7 = -2.f * (w04 - w14 + w24 - w34 + w44) / 9.f;

    // Row 3
    out3.s0 = (w00 + 2.f * w10 + 4.f * w20 + 8.f * w30 + 16.f * w40) / 90.f;
    out3.s1 = -((w00 + 2.f * w10 + 4.f * w20 + 8.f * w30 + 16.f * w40) + (w01 + 2.f * w11 + 4.f * w21 + 8.f * w31 + 16.f * w41) + (w02 + 2.f * w12 + 4.f * w22 + 8.f * w32 + 16.f * w42) +
                (w03 + 2.f * w13 + 4.f * w23 + 8.f * w33 + 16.f * w43) + (w04 + 2.f * w14 + 4.f * w24 + 8.f * w34 + 16.f * w44)) / 405.f;
    out3.s2 = -((w00 + 2.f * w10 + 4.f * w20 + 8.f * w30 + 16.f * w40) - (w01 + 2.f * w11 + 4.f * w21 + 8.f * w31 + 16.f * w41) + (w02 + 2.f * w12 + 4.f * w22 + 8.f * w32 + 16.f * w42) -
                (w03 + 2.f * w13 + 4.f * w23 + 8.f * w33 + 16.f * w43) + (w04 + 2.f * w14 + 4.f * w24 + 8.f * w34 + 16.f * w44)) / 405.f;
    out3.s3 = ((w00 + 2.f * w10 + 4.f * w20 + 8.f * w30 + 16.f * w40) + 2.f * (w01 + 2.f * w11 + 4.f * w21 + 8.f * w31 + 16.f * w41) + 4.f * (w02 + 2.f * w12 + 4.f * w22 + 8.f * w32 + 16.f * w42) + 8.f
               * (w03 + 2.f * w13 + 4.f * w23 + 8.f * w33 + 16.f * w43) + 16.f * (w04 + 2.f * w14 + 4.f * w24 + 8.f * w34 + 16.f * w44)) / 8100.f;
    out3.s4 = ((w00 + 2.f * w10 + 4.f * w20 + 8.f * w30 + 16.f * w40) - 2.f * (w01 + 2.f * w11 + 4.f * w21 + 8.f * w31 + 16.f * w41) + 4.f * (w02 + 2.f * w12 + 4.f * w22 + 8.f * w32 + 16.f * w42) - 8.f
               * (w03 + 2.f * w13 + 4.f * w23 + 8.f * w33 + 16.f * w43) + 16.f * (w04 + 2.f * w14 + 4.f * w24 + 8.f * w34 + 16.f * w44)) / 8100.f;
    out3.s5 = (16.f * (w00 + 2.f * w10 + 4.f * w20 + 8.f * w30 + 16.f * w40) + 8.f * (w01 + 2.f * w11 + 4.f * w21 + 8.f * w31 + 16.f * w41) + 4.f *
               (w02 + 2.f * w12 + 4.f * w22 + 8.f * w32 + 16.f * w42) + 2.f * (w03 + 2.f * w13 + 4.f * w23 + 8.f * w33 + 16.f * w43) + (w04 + 2.f * w14 + 4.f * w24 + 8.f * w34 + 16.f * w44)) / 16200.f;
    out3.s6 = (16.f * (w00 + 2.f * w10 + 4.f * w20 + 8.f * w30 + 16.f * w40) - 8.f * (w01 + 2.f * w11 + 4.f * w21 + 8.f * w31 + 16.f * w41) + 4.f *
               (w02 + 2.f * w12 + 4.f * w22 + 8.f * w32 + 16.f * w42) - 2.f * (w03 + 2.f * w13 + 4.f * w23 + 8.f * w33 + 16.f * w43) + (w04 + 2.f * w14 + 4.f * w24 + 8.f * w34 + 16.f * w44)) / 16200.f;
    out3.s7 = (w04 + 2.f * w14 + 4.f * w24 + 8.f * w34 + 16.f * w44) / 90.f;

    // Row 4
    out4.s0 = (w00 - 2.f * w10 + 4.f * w20 - 8.f * w30 + 16.f * w40) / 90.f;
    out4.s1 = -((w00 - 2.f * w10 + 4.f * w20 - 8.f * w30 + 16.f * w40) + (w01 - 2.f * w11 + 4.f * w21 - 8.f * w31 + 16.f * w41) + (w02 - 2.f * w12 + 4.f * w22 - 8.f * w32 + 16.f * w42) +
                (w03 - 2.f * w13 + 4.f * w23 - 8.f * w33 + 16.f * w43) + (w04 - 2.f * w14 + 4.f * w24 - 8.f * w34 + 16.f * w44)) / 405.f;
    out4.s2 = -((w00 - 2.f * w10 + 4.f * w20 - 8.f * w30 + 16.f * w40) - (w01 - 2.f * w11 + 4.f * w21 - 8.f * w31 + 16.f * w41) + (w02 - 2.f * w12 + 4.f * w22 - 8.f * w32 + 16.f * w42) -
                (w03 - 2.f * w13 + 4.f * w23 - 8.f * w33 + 16.f * w43) + (w04 - 2.f * w14 + 4.f * w24 - 8.f * w34 + 16.f * w44)) / 405.f;
    out4.s3 = ((w00 - 2.f * w10 + 4.f * w20 - 8.f * w30 + 16.f * w40) + 2.f * (w01 - 2.f * w11 + 4.f * w21 - 8.f * w31 + 16.f * w41) + 4.f * (w02 - 2.f * w12 + 4.f * w22 - 8.f * w32 + 16.f * w42) + 8.f
               * (w03 - 2.f * w13 + 4.f * w23 - 8.f * w33 + 16.f * w43) + 16.f * (w04 - 2.f * w14 + 4.f * w24 - 8.f * w34 + 16.f * w44)) / 8100.f;
    out4.s4 = ((w00 - 2.f * w10 + 4.f * w20 - 8.f * w30 + 16.f * w40) - 2.f * (w01 - 2.f * w11 + 4.f * w21 - 8.f * w31 + 16.f * w41) + 4.f * (w02 - 2.f * w12 + 4.f * w22 - 8.f * w32 + 16.f * w42) - 8.f
               * (w03 - 2.f * w13 + 4.f * w23 - 8.f * w33 + 16.f * w43) + 16.f * (w04 - 2.f * w14 + 4.f * w24 - 8.f * w34 + 16.f * w44)) / 8100.f;
    out4.s5 = (16.f * (w00 - 2.f * w10 + 4.f * w20 - 8.f * w30 + 16.f * w40) + 8.f * (w01 - 2.f * w11 + 4.f * w21 - 8.f * w31 + 16.f * w41) + 4.f *
               (w02 - 2.f * w12 + 4.f * w22 - 8.f * w32 + 16.f * w42) + 2.f * (w03 - 2.f * w13 + 4.f * w23 - 8.f * w33 + 16.f * w43) + (w04 - 2.f * w14 + 4.f * w24 - 8.f * w34 + 16.f * w44)) / 16200.f;
    out4.s6 = (16.f * (w00 - 2.f * w10 + 4.f * w20 - 8.f * w30 + 16.f * w40) - 8.f * (w01 - 2.f * w11 + 4.f * w21 - 8.f * w31 + 16.f * w41) + 4.f *
               (w02 - 2.f * w12 + 4.f * w22 - 8.f * w32 + 16.f * w42) - 2.f * (w03 - 2.f * w13 + 4.f * w23 - 8.f * w33 + 16.f * w43) + (w04 - 2.f * w14 + 4.f * w24 - 8.f * w34 + 16.f * w44)) / 16200.f;
    out4.s7 = (w04 - 2.f * w14 + 4.f * w24 - 8.f * w34 + 16.f * w44) / 90.f;

    // Row 5
    out5.s0 = (16.f * w00 + 8.f * w10 + 4.f * w20 + 2.f * w30 + w40) / 180.f;
    out5.s1 = -((16.f * w00 + 8.f * w10 + 4.f * w20 + 2.f * w30 + w40) + (16.f * w01 + 8.f * w11 + 4.f * w21 + 2.f * w31 + w41) + (16.f * w02 + 8.f * w12 + 4.f * w22 + 2.f * w32 + w42) +
                (16.f * w03 + 8.f * w13 + 4.f * w23 + 2.f * w33 + w43) + (16.f * w04 + 8.f * w14 + 4.f * w24 + 2.f * w34 + w44)) / 810.f;
    out5.s2 = -((16.f * w00 + 8.f * w10 + 4.f * w20 + 2.f * w30 + w40) - (16.f * w01 + 8.f * w11 + 4.f * w21 + 2.f * w31 + w41) + (16.f * w02 + 8.f * w12 + 4.f * w22 + 2.f * w32 + w42) -
                (16.f * w03 + 8.f * w13 + 4.f * w23 + 2.f * w33 + w43) + (16.f * w04 + 8.f * w14 + 4.f * w24 + 2.f * w34 + w44)) / 810.f;
    out5.s3 = ((16.f * w00 + 8.f * w10 + 4.f * w20 + 2.f * w30 + w40) + 2.f * (16.f * w01 + 8.f * w11 + 4.f * w21 + 2.f * w31 + w41) + 4.f * (16.f * w02 + 8.f * w12 + 4.f * w22 + 2.f * w32 + w42) + 8.f
               * (16.f * w03 + 8.f * w13 + 4.f * w23 + 2.f * w33 + w43) + 16.f * (16.f * w04 + 8.f * w14 + 4.f * w24 + 2.f * w34 + w44)) / 16200.f;
    out5.s4 = ((16.f * w00 + 8.f * w10 + 4.f * w20 + 2.f * w30 + w40) - 2.f * (16.f * w01 + 8.f * w11 + 4.f * w21 + 2.f * w31 + w41) + 4.f * (16.f * w02 + 8.f * w12 + 4.f * w22 + 2.f * w32 + w42) - 8.f
               * (16.f * w03 + 8.f * w13 + 4.f * w23 + 2.f * w33 + w43) + 16.f * (16.f * w04 + 8.f * w14 + 4.f * w24 + 2.f * w34 + w44)) / 16200.f;
    out5.s5 = (16.f * (16.f * w00 + 8.f * w10 + 4.f * w20 + 2.f * w30 + w40) + 8.f * (16.f * w01 + 8.f * w11 + 4.f * w21 + 2.f * w31 + w41) + 4.f *
               (16.f * w02 + 8.f * w12 + 4.f * w22 + 2.f * w32 + w42) + 2.f * (16.f * w03 + 8.f * w13 + 4.f * w23 + 2.f * w33 + w43) + (16.f * w04 + 8.f * w14 + 4.f * w24 + 2.f * w34 + w44)) / 32400.f;
    out5.s6 = (16.f * (16.f * w00 + 8.f * w10 + 4.f * w20 + 2.f * w30 + w40) - 8.f * (16.f * w01 + 8.f * w11 + 4.f * w21 + 2.f * w31 + w41) + 4.f *
               (16.f * w02 + 8.f * w12 + 4.f * w22 + 2.f * w32 + w42) - 2.f * (16.f * w03 + 8.f * w13 + 4.f * w23 + 2.f * w33 + w43) + (16.f * w04 + 8.f * w14 + 4.f * w24 + 2.f * w34 + w44)) / 32400.f;
    out5.s7 = (16.f * w04 + 8.f * w14 + 4.f * w24 + 2.f * w34 + w44) / 180.f;

    // Row 6
    out6.s0 = (16.f * w00 - 8.f * w10 + 4.f * w20 - 2.f * w30 + w40) / 180.f;
    out6.s1 = -((16.f * w00 - 8.f * w10 + 4.f * w20 - 2.f * w30 + w40) + (16.f * w01 - 8.f * w11 + 4.f * w21 - 2.f * w31 + w41) + (16.f * w02 - 8.f * w12 + 4.f * w22 - 2.f * w32 + w42) +
                (16.f * w03 - 8.f * w13 + 4.f * w23 - 2.f * w33 + w43) + (16.f * w04 - 8.f * w14 + 4.f * w24 - 2.f * w34 + w44)) / 810.f;
    out6.s2 = -((16.f * w00 - 8.f * w10 + 4.f * w20 - 2.f * w30 + w40) - (16.f * w01 - 8.f * w11 + 4.f * w21 - 2.f * w31 + w41) + (16.f * w02 - 8.f * w12 + 4.f * w22 - 2.f * w32 + w42) -
                (16.f * w03 - 8.f * w13 + 4.f * w23 - 2.f * w33 + w43) + (16.f * w04 - 8.f * w14 + 4.f * w24 - 2.f * w34 + w44)) / 810.f;
    out6.s3 = ((16.f * w00 - 8.f * w10 + 4.f * w20 - 2.f * w30 + w40) + 2.f * (16.f * w01 - 8.f * w11 + 4.f * w21 - 2.f * w31 + w41) + 4.f * (16.f * w02 - 8.f * w12 + 4.f * w22 - 2.f * w32 + w42) + 8.f
               * (16.f * w03 - 8.f * w13 + 4.f * w23 - 2.f * w33 + w43) + 16.f * (16.f * w04 - 8.f * w14 + 4.f * w24 - 2.f * w34 + w44)) / 16200.f;
    out6.s4 = ((16.f * w00 - 8.f * w10 + 4.f * w20 - 2.f * w30 + w40) - 2.f * (16.f * w01 - 8.f * w11 + 4.f * w21 - 2.f * w31 + w41) + 4.f * (16.f * w02 - 8.f * w12 + 4.f * w22 - 2.f * w32 + w42) - 8.f
               * (16.f * w03 - 8.f * w13 + 4.f * w23 - 2.f * w33 + w43) + 16.f * (16.f * w04 - 8.f * w14 + 4.f * w24 - 2.f * w34 + w44)) / 16200.f;
    out6.s5 = (16.f * (16.f * w00 - 8.f * w10 + 4.f * w20 - 2.f * w30 + w40) + 8.f * (16.f * w01 - 8.f * w11 + 4.f * w21 - 2.f * w31 + w41) + 4.f *
               (16.f * w02 - 8.f * w12 + 4.f * w22 - 2.f * w32 + w42) + 2.f * (16.f * w03 - 8.f * w13 + 4.f * w23 - 2.f * w33 + w43) + (16.f * w04 - 8.f * w14 + 4.f * w24 - 2.f * w34 + w44)) / 32400.f;
    out6.s6 = (16.f * (16.f * w00 - 8.f * w10 + 4.f * w20 - 2.f * w30 + w40) - 8.f * (16.f * w01 - 8.f * w11 + 4.f * w21 - 2.f * w31 + w41) + 4.f *
               (16.f * w02 - 8.f * w12 + 4.f * w22 - 2.f * w32 + w42) - 2.f * (16.f * w03 - 8.f * w13 + 4.f * w23 - 2.f * w33 + w43) + (16.f * w04 - 8.f * w14 + 4.f * w24 - 2.f * w34 + w44)) / 32400.f;
    out6.s7 = (16.f * w04 - 8.f * w14 + 4.f * w24 - 2.f * w34 + w44) / 180.f;

    // Row 7
    out7.s0 = w40;
    out7.s1 = -2.f * (w40 + w41 + w42 + w43 + w44) / 9.f;
    out7.s2 = -2.f * (w40 - w41 + w42 - w43 + w44) / 9.f;
    out7.s3 = (w40 + 2.f * w41 + 4.f * w42 + 8.f * w43 + 16.f * w44) / 90.f;
    out7.s4 = (w40 - 2.f * w41 + 4.f * w42 - 8.f * w43 + 16.f * w44) / 90.f;
    out7.s5 = (16.f * w40 + 8.f * w41 + 4.f * w42 + 2.f * w43 + w44) / 180.f;
    out7.s6 = (16.f * w40 - 8.f * w41 + 4.f * w42 - 2.f * w43 + w44) / 180.f;
    out7.s7 = w44;

    int x0 = get_global_id(2); // idx filter
    int y0 = get_global_id(0); // idx channel

    // Get output address
    __global uchar *dst_addr = dst_ptr + dst_offset_first_element_in_bytes + x0 * sizeof(float) + y0 * dst_stride_y;

    // Store the 64 values across the 64 channels
    *(__global float *)(dst_addr + 0 * dst_stride_z)  = out0.s0;
    *(__global float *)(dst_addr + 1 * dst_stride_z)  = out0.s1;
    *(__global float *)(dst_addr + 2 * dst_stride_z)  = out0.s2;
    *(__global float *)(dst_addr + 3 * dst_stride_z)  = out0.s3;
    *(__global float *)(dst_addr + 4 * dst_stride_z)  = out0.s4;
    *(__global float *)(dst_addr + 5 * dst_stride_z)  = out0.s5;
    *(__global float *)(dst_addr + 6 * dst_stride_z)  = out0.s6;
    *(__global float *)(dst_addr + 7 * dst_stride_z)  = out0.s7;
    *(__global float *)(dst_addr + 8 * dst_stride_z)  = out1.s0;
    *(__global float *)(dst_addr + 9 * dst_stride_z)  = out1.s1;
    *(__global float *)(dst_addr + 10 * dst_stride_z) = out1.s2;
    *(__global float *)(dst_addr + 11 * dst_stride_z) = out1.s3;
    *(__global float *)(dst_addr + 12 * dst_stride_z) = out1.s4;
    *(__global float *)(dst_addr + 13 * dst_stride_z) = out1.s5;
    *(__global float *)(dst_addr + 14 * dst_stride_z) = out1.s6;
    *(__global float *)(dst_addr + 15 * dst_stride_z) = out1.s7;
    *(__global float *)(dst_addr + 16 * dst_stride_z) = out2.s0;
    *(__global float *)(dst_addr + 17 * dst_stride_z) = out2.s1;
    *(__global float *)(dst_addr + 18 * dst_stride_z) = out2.s2;
    *(__global float *)(dst_addr + 19 * dst_stride_z) = out2.s3;
    *(__global float *)(dst_addr + 20 * dst_stride_z) = out2.s4;
    *(__global float *)(dst_addr + 21 * dst_stride_z) = out2.s5;
    *(__global float *)(dst_addr + 22 * dst_stride_z) = out2.s6;
    *(__global float *)(dst_addr + 23 * dst_stride_z) = out2.s7;
    *(__global float *)(dst_addr + 24 * dst_stride_z) = out3.s0;
    *(__global float *)(dst_addr + 25 * dst_stride_z) = out3.s1;
    *(__global float *)(dst_addr + 26 * dst_stride_z) = out3.s2;
    *(__global float *)(dst_addr + 27 * dst_stride_z) = out3.s3;
    *(__global float *)(dst_addr + 28 * dst_stride_z) = out3.s4;
    *(__global float *)(dst_addr + 29 * dst_stride_z) = out3.s5;
    *(__global float *)(dst_addr + 30 * dst_stride_z) = out3.s6;
    *(__global float *)(dst_addr + 31 * dst_stride_z) = out3.s7;
    *(__global float *)(dst_addr + 32 * dst_stride_z) = out4.s0;
    *(__global float *)(dst_addr + 33 * dst_stride_z) = out4.s1;
    *(__global float *)(dst_addr + 34 * dst_stride_z) = out4.s2;
    *(__global float *)(dst_addr + 35 * dst_stride_z) = out4.s3;
    *(__global float *)(dst_addr + 36 * dst_stride_z) = out4.s4;
    *(__global float *)(dst_addr + 37 * dst_stride_z) = out4.s5;
    *(__global float *)(dst_addr + 38 * dst_stride_z) = out4.s6;
    *(__global float *)(dst_addr + 39 * dst_stride_z) = out4.s7;
    *(__global float *)(dst_addr + 40 * dst_stride_z) = out5.s0;
    *(__global float *)(dst_addr + 41 * dst_stride_z) = out5.s1;
    *(__global float *)(dst_addr + 42 * dst_stride_z) = out5.s2;
    *(__global float *)(dst_addr + 43 * dst_stride_z) = out5.s3;
    *(__global float *)(dst_addr + 44 * dst_stride_z) = out5.s4;
    *(__global float *)(dst_addr + 45 * dst_stride_z) = out5.s5;
    *(__global float *)(dst_addr + 46 * dst_stride_z) = out5.s6;
    *(__global float *)(dst_addr + 47 * dst_stride_z) = out5.s7;
    *(__global float *)(dst_addr + 48 * dst_stride_z) = out6.s0;
    *(__global float *)(dst_addr + 49 * dst_stride_z) = out6.s1;
    *(__global float *)(dst_addr + 50 * dst_stride_z) = out6.s2;
    *(__global float *)(dst_addr + 51 * dst_stride_z) = out6.s3;
    *(__global float *)(dst_addr + 52 * dst_stride_z) = out6.s4;
    *(__global float *)(dst_addr + 53 * dst_stride_z) = out6.s5;
    *(__global float *)(dst_addr + 54 * dst_stride_z) = out6.s6;
    *(__global float *)(dst_addr + 55 * dst_stride_z) = out6.s7;
    *(__global float *)(dst_addr + 56 * dst_stride_z) = out7.s0;
    *(__global float *)(dst_addr + 57 * dst_stride_z) = out7.s1;
    *(__global float *)(dst_addr + 58 * dst_stride_z) = out7.s2;
    *(__global float *)(dst_addr + 59 * dst_stride_z) = out7.s3;
    *(__global float *)(dst_addr + 60 * dst_stride_z) = out7.s4;
    *(__global float *)(dst_addr + 61 * dst_stride_z) = out7.s5;
    *(__global float *)(dst_addr + 62 * dst_stride_z) = out7.s6;
    *(__global float *)(dst_addr + 63 * dst_stride_z) = out7.s7;
}
#endif // defined(SRC_DIM_Z)