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/*
* Copyright (c) 2017 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.
*/
layout(local_size_x = LOCAL_SIZE_X, local_size_y = LOCAL_SIZE_Y, local_size_z = LOCAL_SIZE_Z) in;
#include "helpers.h"
layout(std140) uniform shader_params
{
IMAGE_PARAM_DECLARATION(src1);
IMAGE_PARAM_DECLARATION(src2);
IMAGE_PARAM_DECLARATION(dst);
};
BUFFER_DECLARATION(src1, 1, uint, readonly);
BUFFER_DECLARATION(src2, 2, uint, readonly);
BUFFER_DECLARATION(dst, 3, uint, writeonly);
/** Calculate the absolute difference of two input images.
*
* @param[in] src1_ptr Pointer to the first source image. Supported data types: U8
* @param[in] src1_stride_x Stride of the first source image in X dimension (in bytes)
* @param[in] src1_step_x src_stride_x * number of elements along X processed per workitem(in bytes)
* @param[in] src1_stride_y Stride of the first source image in Y dimension (in bytes)
* @param[in] src1_step_y src_stride_y * number of elements along Y processed per workitem(in bytes)
* @param[in] src1_offset_first_element_in_bytes The offset of the first element in the first source image
* @param[in] src2_ptr Pointer to the second source image. Supported data types: Same as @p in1_ptr
* @param[in] src2_stride_x Stride of the second source image in X dimension (in bytes)
* @param[in] src2_step_x src_stride_x * number of elements along X processed per workitem(in bytes)
* @param[in] src2_stride_y Stride of the second source image in Y dimension (in bytes)
* @param[in] src2_step_y src_stride_y * number of elements along Y processed per workitem(in bytes)
* @param[in] src2_offset_first_element_in_bytes The offset of the first element in the second source image
* @param[out] dst_ptr Pointer to the destination image. Supported data types: Same as @p in1_ptr
* @param[in] dst_stride_x Stride of the destination image 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 image 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] dst_offset_first_element_in_bytes The offset of the first element in the destination image
*/
void main(void)
{
Image src1 = CONVERT_TO_IMAGE_STRUCT(src1);
Image src2 = CONVERT_TO_IMAGE_STRUCT(src2);
Image dst = CONVERT_TO_IMAGE_STRUCT(dst);
uvec4 tmp1 = UNPACK(LOAD4(src1, CURRENT_OFFSET(src1)), uint, uvec4);
uvec4 tmp2 = UNPACK(LOAD4(src2, CURRENT_OFFSET(src2)), uint, uvec4);
uvec4 diff = uvec4(abs(ivec4(tmp1 - tmp2)));
STORE4(dst, CURRENT_OFFSET(dst), PACK(diff, uvec4, uint));
}
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