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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_cs.h"
/** 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_attrs The attributes of 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_attrs The attributes of the second source image
* @param[out] dst_ptr Pointer to the destination image. Supported data types: Same as @p in1_ptr
* @param[in] dst_attrs The attributes of the destination image
*/
SHADER_PARAMS_DECLARATION
{
ImageAttributes src1_attrs;
ImageAttributes src2_attrs;
ImageAttributes dst_attrs;
};
TENSOR_DECLARATION(1, src1Buffer, uint, src1_ptr, src1_shift, 2, readonly);
TENSOR_DECLARATION(2, src2Buffer, uint, src2_ptr, src2_shift, 2, readonly);
TENSOR_DECLARATION(3, dstBuffer, uint, dst_ptr, dst_shift, 2, writeonly);
void main(void)
{
ImageIterator src1_iter = CONVERT_TO_IMAGE_ITERATOR(src1_attrs, src1_shift);
ImageIterator src2_iter = CONVERT_TO_IMAGE_ITERATOR(src2_attrs, src2_shift);
ImageIterator dst_iter = CONVERT_TO_IMAGE_ITERATOR(dst_attrs, dst_shift);
lowp uvec4 tmp1 = LOAD_UNPACK4_CURRENT_ITEM_U8(src1_ptr, src1_iter);
lowp uvec4 tmp2 = LOAD_UNPACK4_CURRENT_ITEM_U8(src2_ptr, src2_iter);
lowp uvec4 diff = uvec4(abs(ivec4(tmp1 - tmp2)));
STORE_PACK4_CURRENT_ITEM_U8(dst_ptr, dst_iter, diff);
}
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