libblur 0.24.0

// Copyright (c) Radzivon Bartoshyk. All rights reserved.
//
// Redistribution and use in source and binary forms, with or without modification,
// are permitted provided that the following conditions are met:
//
// 1.  Redistributions of source code must retain the above copyright notice, this
// list of conditions and the following disclaimer.
//
// 2.  Redistributions in binary form must reproduce the above copyright notice,
// this list of conditions and the following disclaimer in the documentation
// and/or other materials provided with the distribution.
//
// 3.  Neither the name of the copyright holder nor the names of its
// contributors may be used to endorse or promote products derived from
// this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
// AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
// IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
// DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
// FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
// DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
// SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
// CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
// OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

use crate::EdgeMode;
use crate::edge_mode::clamp_edge;
use crate::sse::fast_gaussian_f32::SseF32x4;
use crate::sse::{_mm_opt_fmlaf_ps, _mm_opt_fnmlaf_ps, _mm_opt_fnmlsf_ps, load_f32, store_f32};
use crate::unsafe_slice::UnsafeSlice;
use crate::util::ScratchBuffer;
#[cfg(target_arch = "x86")]
use std::arch::x86::*;
#[cfg(target_arch = "x86_64")]
use std::arch::x86_64::*;

pub(crate) fn fgn_vertical_pass_sse_f32<const CN: usize>(
    slice: &UnsafeSlice<f32>,
    stride: u32,
    width: u32,
    height: u32,
    radius: u32,
    start: u32,
    end: u32,
    edge_mode: EdgeMode,
) {
    unsafe {
        if std::arch::is_x86_feature_detected!("fma") {
            fgn_vertical_pass_sse_f32_fma::<CN>(
                slice, stride, width, height, radius, start, end, edge_mode,
            );
        } else {
            fgn_vertical_pass_sse_f32_def::<CN>(
                slice, stride, width, height, radius, start, end, edge_mode,
            );
        }
    }
}

#[target_feature(enable = "sse4.1")]
fn fgn_vertical_pass_sse_f32_def<const CN: usize>(
    bytes: &UnsafeSlice<f32>,
    stride: u32,
    width: u32,
    height: u32,
    radius: u32,
    start: u32,
    end: u32,
    edge_mode: EdgeMode,
) {
    fgn_vertical_pass_sse_f32_impl::<CN, false>(
        bytes, stride, width, height, radius, start, end, edge_mode,
    );
}

#[target_feature(enable = "sse4.1", enable = "fma")]
fn fgn_vertical_pass_sse_f32_fma<const CN: usize>(
    bytes: &UnsafeSlice<f32>,
    stride: u32,
    width: u32,
    height: u32,
    radius: u32,
    start: u32,
    end: u32,
    edge_mode: EdgeMode,
) {
    fgn_vertical_pass_sse_f32_impl::<CN, true>(
        bytes, stride, width, height, radius, start, end, edge_mode,
    );
}

#[inline(always)]
fn fgn_vertical_pass_sse_f32_impl<const CN: usize, const FMA: bool>(
    bytes: &UnsafeSlice<f32>,
    stride: u32,
    width: u32,
    height: u32,
    radius: u32,
    start: u32,
    end: u32,
    edge_mode: EdgeMode,
) {
    unsafe {
        let mut buffer = ScratchBuffer::<[SseF32x4; 3], 1024>::new(1024);
        let buffer = buffer.as_mut_slice();

        let height_wide = height as i64;

        let threes = _mm_set1_ps(3.);

        let radius_64 = radius as i64;
        let weight = 1.0f32 / ((radius as f32) * (radius as f32) * (radius as f32));
        let v_weight = _mm_set1_ps(weight);

        let mut xx = start as usize;

        while xx + 3 <= width.min(end) as usize {
            let mut diffs0 = _mm_setzero_ps();
            let mut diffs1 = _mm_setzero_ps();
            let mut diffs2 = _mm_setzero_ps();

            let mut ders0 = _mm_setzero_ps();
            let mut ders1 = _mm_setzero_ps();
            let mut ders2 = _mm_setzero_ps();

            let mut summs0 = _mm_setzero_ps();
            let mut summs1 = _mm_setzero_ps();
            let mut summs2 = _mm_setzero_ps();

            let current_px0 = xx * CN;
            let current_px1 = (xx + 1) * CN;
            let current_px2 = (xx + 2) * CN;

            let start_y = 0 - 3 * radius as i64;
            for y in start_y..height_wide {
                if y >= 0 {
                    let current_y = (y * (stride as i64)) as usize;

                    let prepared_px0 = _mm_mul_ps(summs0, v_weight);
                    let prepared_px1 = _mm_mul_ps(summs1, v_weight);
                    let prepared_px2 = _mm_mul_ps(summs2, v_weight);

                    store_f32::<CN>(bytes.get_ptr(current_y + current_px0), prepared_px0);
                    store_f32::<CN>(bytes.get_ptr(current_y + current_px1), prepared_px1);
                    store_f32::<CN>(bytes.get_ptr(current_y + current_px2), prepared_px2);

                    let d_a_1 = ((y + radius_64) & 1023) as usize;
                    let d_a_2 = ((y - radius_64) & 1023) as usize;
                    let d_i = (y & 1023) as usize;

                    let da_b = buffer.get_unchecked(d_i);
                    let da_b1 = buffer.get_unchecked(d_a_1);
                    let da_b2 = buffer.get_unchecked(d_a_2);

                    let sd0 = _mm_load_ps(da_b.as_ptr().cast());
                    let sd1 = _mm_load_ps(da_b[1..].as_ptr().cast());
                    let sd2 = _mm_load_ps(da_b[2..].as_ptr().cast());

                    let sd_1_0 = _mm_load_ps(da_b1.as_ptr().cast());
                    let sd_1_1 = _mm_load_ps(da_b1[1..].as_ptr().cast());
                    let sd_1_2 = _mm_load_ps(da_b1[2..].as_ptr().cast());

                    let j0 = _mm_sub_ps(sd0, sd_1_0);
                    let j1 = _mm_sub_ps(sd1, sd_1_1);
                    let j2 = _mm_sub_ps(sd2, sd_1_2);

                    let sd_2_0 = _mm_load_ps(da_b2.as_ptr().cast());
                    let sd_2_1 = _mm_load_ps(da_b2[1..].as_ptr().cast());
                    let sd_2_2 = _mm_load_ps(da_b2[2..].as_ptr().cast());

                    let new_diff0 = _mm_opt_fnmlsf_ps::<FMA>(sd_2_0, j0, threes);
                    let new_diff1 = _mm_opt_fnmlsf_ps::<FMA>(sd_2_1, j1, threes);
                    let new_diff2 = _mm_opt_fnmlsf_ps::<FMA>(sd_2_2, j2, threes);

                    diffs0 = _mm_add_ps(diffs0, new_diff0);
                    diffs1 = _mm_add_ps(diffs1, new_diff1);
                    diffs2 = _mm_add_ps(diffs2, new_diff2);
                } else if y + radius_64 >= 0 {
                    let a_i = (y & 1023) as usize;
                    let a_i_1 = ((y + radius_64) & 1023) as usize;
                    let da_b = buffer.get_unchecked(a_i);
                    let da_b1 = buffer.get_unchecked(a_i_1);

                    let sd0 = _mm_load_ps(da_b.as_ptr().cast());
                    let sd1 = _mm_load_ps(da_b[1..].as_ptr().cast());
                    let sd2 = _mm_load_ps(da_b[2..].as_ptr().cast());

                    let sd_1_0 = _mm_load_ps(da_b1.as_ptr().cast());
                    let sd_1_1 = _mm_load_ps(da_b1[1..].as_ptr().cast());
                    let sd_1_2 = _mm_load_ps(da_b1[2..].as_ptr().cast());

                    diffs0 = _mm_opt_fmlaf_ps::<FMA>(diffs0, _mm_sub_ps(sd0, sd_1_0), threes);
                    diffs1 = _mm_opt_fmlaf_ps::<FMA>(diffs1, _mm_sub_ps(sd1, sd_1_1), threes);
                    diffs2 = _mm_opt_fmlaf_ps::<FMA>(diffs2, _mm_sub_ps(sd2, sd_1_2), threes);
                } else if y + 2 * radius_64 >= 0 {
                    let arr_index = ((y + radius_64) & 1023) as usize;
                    let da_b = buffer.get_unchecked(arr_index);

                    let sd0 = _mm_load_ps(da_b.as_ptr().cast());
                    let sd1 = _mm_load_ps(da_b[1..].as_ptr().cast());
                    let sd2 = _mm_load_ps(da_b[2..].as_ptr().cast());

                    diffs0 = _mm_opt_fnmlaf_ps::<FMA>(diffs0, sd0, threes);
                    diffs1 = _mm_opt_fnmlaf_ps::<FMA>(diffs1, sd1, threes);
                    diffs2 = _mm_opt_fnmlaf_ps::<FMA>(diffs2, sd2, threes);
                }

                let next_row_y = clamp_edge!(edge_mode, y + ((3 * radius_64) >> 1), 0, height_wide)
                    * (stride as usize);

                let s_ptr0 = bytes.get_ptr(next_row_y + current_px0);
                let s_ptr1 = bytes.get_ptr(next_row_y + current_px1);
                let s_ptr2 = bytes.get_ptr(next_row_y + current_px2);

                let pixel_color0 = load_f32::<CN>(s_ptr0);
                let pixel_color1 = load_f32::<CN>(s_ptr1);
                let pixel_color2 = load_f32::<CN>(s_ptr2);

                let a_i = ((y + 2 * radius_64) & 1023) as usize;
                let da_b = buffer.get_unchecked_mut(a_i);

                _mm_store_ps(da_b.as_mut_ptr().cast(), pixel_color0);
                _mm_store_ps(da_b[1..].as_mut_ptr().cast(), pixel_color1);
                _mm_store_ps(da_b[2..].as_mut_ptr().cast(), pixel_color2);

                diffs0 = _mm_add_ps(diffs0, pixel_color0);
                diffs1 = _mm_add_ps(diffs1, pixel_color1);
                diffs2 = _mm_add_ps(diffs2, pixel_color2);

                ders0 = _mm_add_ps(ders0, diffs0);
                ders1 = _mm_add_ps(ders1, diffs1);
                ders2 = _mm_add_ps(ders2, diffs2);

                summs0 = _mm_add_ps(summs0, ders0);
                summs1 = _mm_add_ps(summs1, ders1);
                summs2 = _mm_add_ps(summs2, ders2);
            }

            xx += 3;
        }

        for x in xx..width.min(end) as usize {
            let mut diffs = _mm_setzero_ps();
            let mut ders = _mm_setzero_ps();
            let mut summs = _mm_setzero_ps();

            let current_px = x * CN;

            let start_y = 0 - 3 * radius as i64;
            for y in start_y..height_wide {
                if y >= 0 {
                    let current_y = (y * (stride as i64)) as usize;
                    let bytes_offset = current_y + current_px;

                    let pixel = _mm_mul_ps(summs, v_weight);
                    store_f32::<CN>(bytes.get_ptr(bytes_offset), pixel);

                    let d_arr_index_1 = ((y + radius_64) & 1023) as usize;
                    let d_arr_index_2 = ((y - radius_64) & 1023) as usize;
                    let d_arr_index = (y & 1023) as usize;

                    let buf_ptr = buffer.get_unchecked(d_arr_index);
                    let stored = _mm_load_ps(buf_ptr.as_ptr().cast());

                    let buf_ptr_1 = buffer.get_unchecked(d_arr_index_1);
                    let stored_1 = _mm_load_ps(buf_ptr_1.as_ptr().cast());

                    let buf_ptr_2 = buffer.get_unchecked(d_arr_index_2);
                    let stored_2 = _mm_load_ps(buf_ptr_2.as_ptr().cast());

                    let new_diff =
                        _mm_opt_fnmlsf_ps::<FMA>(stored_2, _mm_sub_ps(stored, stored_1), threes);
                    diffs = _mm_add_ps(diffs, new_diff);
                } else if y + radius_64 >= 0 {
                    let arr_index = (y & 1023) as usize;
                    let arr_index_1 = ((y + radius_64) & 1023) as usize;
                    let buf_ptr = buffer.get_unchecked(arr_index);
                    let stored = _mm_load_ps(buf_ptr.as_ptr().cast());

                    let buf_ptr_1 = buffer.get_unchecked(arr_index_1);
                    let stored_1 = _mm_load_ps(buf_ptr_1.as_ptr().cast());

                    diffs = _mm_opt_fmlaf_ps::<FMA>(diffs, _mm_sub_ps(stored, stored_1), threes);
                } else if y + 2 * radius_64 >= 0 {
                    let arr_index = ((y + radius_64) & 1023) as usize;
                    let buf_ptr = buffer.get_unchecked(arr_index);
                    let stored = _mm_load_ps(buf_ptr.as_ptr().cast());
                    diffs = _mm_opt_fnmlaf_ps::<FMA>(diffs, stored, threes);
                }

                let next_row_y = clamp_edge!(edge_mode, y + ((3 * radius_64) >> 1), 0, height_wide)
                    * (stride as usize);
                let next_row_x = x * CN;

                let s_ptr = bytes.get_ptr(next_row_y + next_row_x);

                let pixel_color = load_f32::<CN>(s_ptr);

                let arr_index = ((y + 2 * radius_64) & 1023) as usize;
                let buf_ptr = buffer.get_unchecked_mut(arr_index);

                diffs = _mm_add_ps(diffs, pixel_color);
                ders = _mm_add_ps(ders, diffs);
                summs = _mm_add_ps(summs, ders);
                _mm_store_ps(buf_ptr.as_mut_ptr().cast(), pixel_color);
            }
        }
    }
}

pub(crate) fn fgn_horizontal_pass_sse_f32<const CN: usize>(
    slice: &UnsafeSlice<f32>,
    stride: u32,
    width: u32,
    height: u32,
    radius: u32,
    start: u32,
    end: u32,
    edge_mode: EdgeMode,
) {
    unsafe {
        if std::arch::is_x86_feature_detected!("fma") {
            fgn_horizontal_pass_sse_f32_fma::<CN>(
                slice, stride, width, height, radius, start, end, edge_mode,
            );
        } else {
            fgn_horizontal_pass_sse_f32_def::<CN>(
                slice, stride, width, height, radius, start, end, edge_mode,
            );
        }
    }
}

#[target_feature(enable = "sse4.1")]
fn fgn_horizontal_pass_sse_f32_def<const CN: usize>(
    bytes: &UnsafeSlice<f32>,
    stride: u32,
    width: u32,
    height: u32,
    radius: u32,
    start: u32,
    end: u32,
    edge_mode: EdgeMode,
) {
    fgn_horizontal_pass_sse_f32_impl::<CN, false>(
        bytes, stride, width, height, radius, start, end, edge_mode,
    );
}

#[target_feature(enable = "sse4.1", enable = "fma")]
fn fgn_horizontal_pass_sse_f32_fma<const CN: usize>(
    bytes: &UnsafeSlice<f32>,
    stride: u32,
    width: u32,
    height: u32,
    radius: u32,
    start: u32,
    end: u32,
    edge_mode: EdgeMode,
) {
    fgn_horizontal_pass_sse_f32_impl::<CN, true>(
        bytes, stride, width, height, radius, start, end, edge_mode,
    );
}

#[inline(always)]
fn fgn_horizontal_pass_sse_f32_impl<const CN: usize, const FMA: bool>(
    bytes: &UnsafeSlice<f32>,
    stride: u32,
    width: u32,
    height: u32,
    radius: u32,
    start: u32,
    end: u32,
    edge_mode: EdgeMode,
) {
    unsafe {
        let mut buffer = ScratchBuffer::<[SseF32x4; 3], 1024>::new(1024);
        let buffer = buffer.as_mut_slice();

        let width_wide = width as i64;

        let threes = _mm_set1_ps(3.);

        let radius_64 = radius as i64;
        let weight = 1.0f32 / ((radius as f32) * (radius as f32) * (radius as f32));
        let v_weight = _mm_set1_ps(weight);

        let mut yy = start as usize;

        while yy + 3 <= height.min(end) as usize {
            let mut diffs0 = _mm_setzero_ps();
            let mut diffs1 = _mm_setzero_ps();
            let mut diffs2 = _mm_setzero_ps();

            let mut ders0 = _mm_setzero_ps();
            let mut ders1 = _mm_setzero_ps();
            let mut ders2 = _mm_setzero_ps();

            let mut summs0 = _mm_setzero_ps();
            let mut summs1 = _mm_setzero_ps();
            let mut summs2 = _mm_setzero_ps();

            let start_x = 0 - 3 * radius_64;

            let current_y0 = ((yy as i64) * (stride as i64)) as usize;
            let current_y1 = (((yy + 1) as i64) * (stride as i64)) as usize;
            let current_y2 = (((yy + 2) as i64) * (stride as i64)) as usize;

            for x in start_x..(width as i64) {
                if x >= 0 {
                    let current_px = x as usize * CN;

                    let prepared_px0 = _mm_mul_ps(summs0, v_weight);
                    let prepared_px1 = _mm_mul_ps(summs1, v_weight);
                    let prepared_px2 = _mm_mul_ps(summs2, v_weight);

                    let dst_ptr0 = bytes.get_ptr(current_y0 + current_px);
                    let dst_ptr1 = bytes.get_ptr(current_y1 + current_px);
                    let dst_ptr2 = bytes.get_ptr(current_y2 + current_px);

                    store_f32::<CN>(dst_ptr0, prepared_px0);
                    store_f32::<CN>(dst_ptr1, prepared_px1);
                    store_f32::<CN>(dst_ptr2, prepared_px2);

                    let d_a_1 = ((x + radius_64) & 1023) as usize;
                    let d_a_2 = ((x - radius_64) & 1023) as usize;
                    let d_i = (x & 1023) as usize;

                    let da_b = buffer.get_unchecked(d_i);
                    let da_b1 = buffer.get_unchecked(d_a_1);
                    let da_b2 = buffer.get_unchecked(d_a_2);

                    let sd0 = _mm_load_ps(da_b.as_ptr().cast());
                    let sd1 = _mm_load_ps(da_b[1..].as_ptr().cast());
                    let sd2 = _mm_load_ps(da_b[2..].as_ptr().cast());

                    let sd_1_0 = _mm_load_ps(da_b1.as_ptr().cast());
                    let sd_1_1 = _mm_load_ps(da_b1[1..].as_ptr().cast());
                    let sd_1_2 = _mm_load_ps(da_b1[2..].as_ptr().cast());

                    let j0 = _mm_sub_ps(sd0, sd_1_0);
                    let j1 = _mm_sub_ps(sd1, sd_1_1);
                    let j2 = _mm_sub_ps(sd2, sd_1_2);

                    let sd_2_0 = _mm_load_ps(da_b2.as_ptr().cast());
                    let sd_2_1 = _mm_load_ps(da_b2[1..].as_ptr().cast());
                    let sd_2_2 = _mm_load_ps(da_b2[2..].as_ptr().cast());

                    let new_diff0 = _mm_opt_fnmlsf_ps::<FMA>(sd_2_0, j0, threes);
                    let new_diff1 = _mm_opt_fnmlsf_ps::<FMA>(sd_2_1, j1, threes);
                    let new_diff2 = _mm_opt_fnmlsf_ps::<FMA>(sd_2_2, j2, threes);

                    diffs0 = _mm_add_ps(diffs0, new_diff0);
                    diffs1 = _mm_add_ps(diffs1, new_diff1);
                    diffs2 = _mm_add_ps(diffs2, new_diff2);
                } else if x + radius_64 >= 0 {
                    let a_i = (x & 1023) as usize;
                    let a_i_1 = ((x + radius_64) & 1023) as usize;
                    let da_b = buffer.get_unchecked(a_i);
                    let da_b1 = buffer.get_unchecked(a_i_1);

                    let sd0 = _mm_load_ps(da_b.as_ptr().cast());
                    let sd1 = _mm_load_ps(da_b[1..].as_ptr().cast());
                    let sd2 = _mm_load_ps(da_b[2..].as_ptr().cast());

                    let sd_1_0 = _mm_load_ps(da_b1.as_ptr().cast());
                    let sd_1_1 = _mm_load_ps(da_b1[1..].as_ptr().cast());
                    let sd_1_2 = _mm_load_ps(da_b1[2..].as_ptr().cast());

                    diffs0 = _mm_opt_fmlaf_ps::<FMA>(diffs0, _mm_sub_ps(sd0, sd_1_0), threes);
                    diffs1 = _mm_opt_fmlaf_ps::<FMA>(diffs1, _mm_sub_ps(sd1, sd_1_1), threes);
                    diffs2 = _mm_opt_fmlaf_ps::<FMA>(diffs2, _mm_sub_ps(sd2, sd_1_2), threes);
                } else if x + 2 * radius_64 >= 0 {
                    let arr_index = ((x + radius_64) & 1023) as usize;
                    let da_b = buffer.get_unchecked(arr_index);

                    let sd0 = _mm_load_ps(da_b.as_ptr().cast());
                    let sd1 = _mm_load_ps(da_b[1..].as_ptr().cast());
                    let sd2 = _mm_load_ps(da_b[2..].as_ptr().cast());

                    diffs0 = _mm_opt_fnmlaf_ps::<FMA>(diffs0, sd0, threes);
                    diffs1 = _mm_opt_fnmlaf_ps::<FMA>(diffs1, sd1, threes);
                    diffs2 = _mm_opt_fnmlaf_ps::<FMA>(diffs2, sd2, threes);
                }

                let next_row_x = clamp_edge!(edge_mode, x + 3 * radius_64 / 2, 0, width_wide);
                let next_row_px = next_row_x * CN;

                let s_ptr0 = bytes.get_ptr(current_y0 + next_row_px);
                let s_ptr1 = bytes.get_ptr(current_y1 + next_row_px);
                let s_ptr2 = bytes.get_ptr(current_y2 + next_row_px);

                let pixel_color0 = load_f32::<CN>(s_ptr0);
                let pixel_color1 = load_f32::<CN>(s_ptr1);
                let pixel_color2 = load_f32::<CN>(s_ptr2);

                let a_i = ((x + 2 * radius_64) & 1023) as usize;
                let da_b = buffer.get_unchecked_mut(a_i);

                _mm_store_ps(da_b.as_mut_ptr().cast(), pixel_color0);
                _mm_store_ps(da_b[1..].as_mut_ptr().cast(), pixel_color1);
                _mm_store_ps(da_b[2..].as_mut_ptr().cast(), pixel_color2);

                diffs0 = _mm_add_ps(diffs0, pixel_color0);
                diffs1 = _mm_add_ps(diffs1, pixel_color1);
                diffs2 = _mm_add_ps(diffs2, pixel_color2);

                ders0 = _mm_add_ps(ders0, diffs0);
                ders1 = _mm_add_ps(ders1, diffs1);
                ders2 = _mm_add_ps(ders2, diffs2);

                summs0 = _mm_add_ps(summs0, ders0);
                summs1 = _mm_add_ps(summs1, ders1);
                summs2 = _mm_add_ps(summs2, ders2);
            }

            yy += 3;
        }

        for y in yy..height.min(end) as usize {
            let mut diffs = _mm_setzero_ps();
            let mut ders = _mm_setzero_ps();
            let mut summs = _mm_setzero_ps();

            let current_y = ((y as i64) * (stride as i64)) as usize;

            for x in (0 - 3 * radius_64)..(width as i64) {
                if x >= 0 {
                    let current_px = x as usize * CN;

                    let bytes_offset = current_y + current_px;

                    let pixel = _mm_mul_ps(summs, v_weight);
                    store_f32::<CN>(bytes.get_ptr(bytes_offset), pixel);

                    let d_arr_index_1 = ((x + radius_64) & 1023) as usize;
                    let d_arr_index_2 = ((x - radius_64) & 1023) as usize;
                    let d_arr_index = (x & 1023) as usize;

                    let buf_ptr = buffer.get_unchecked(d_arr_index);
                    let stored = _mm_load_ps(buf_ptr.as_ptr().cast());

                    let buf_ptr_1 = buffer.get_unchecked(d_arr_index_1);
                    let stored_1 = _mm_load_ps(buf_ptr_1.as_ptr().cast());

                    let buf_ptr_2 = buffer.get_unchecked(d_arr_index_2);
                    let stored_2 = _mm_load_ps(buf_ptr_2.as_ptr().cast());

                    let new_diff =
                        _mm_opt_fnmlsf_ps::<FMA>(stored_2, _mm_sub_ps(stored, stored_1), threes);
                    diffs = _mm_add_ps(diffs, new_diff);
                } else if x + radius_64 >= 0 {
                    let arr_index = (x & 1023) as usize;
                    let arr_index_1 = ((x + radius_64) & 1023) as usize;
                    let buf_ptr = buffer.get_unchecked(arr_index);
                    let stored = _mm_load_ps(buf_ptr.as_ptr().cast());

                    let buf_ptr_1 = buffer.get_unchecked(arr_index_1);
                    let stored_1 = _mm_load_ps(buf_ptr_1.as_ptr().cast());

                    diffs = _mm_opt_fmlaf_ps::<FMA>(diffs, _mm_sub_ps(stored, stored_1), threes);
                } else if x + 2 * radius_64 >= 0 {
                    let arr_index = ((x + radius_64) & 1023) as usize;
                    let buf_ptr = buffer.get_unchecked(arr_index);
                    let stored = _mm_load_ps(buf_ptr.as_ptr().cast());
                    diffs = _mm_opt_fnmlaf_ps::<FMA>(diffs, stored, threes);
                }

                let next_row_y = y * (stride as usize);
                let next_row_x = clamp_edge!(edge_mode, x + 3 * radius_64 / 2, 0, width_wide);
                let next_row_px = next_row_x * CN;

                let s_ptr = bytes.get_ptr(next_row_y + next_row_px);

                let pixel_color = load_f32::<CN>(s_ptr);

                let arr_index = ((x + 2 * radius_64) & 1023) as usize;
                let buf_ptr = buffer.get_unchecked_mut(arr_index);

                diffs = _mm_add_ps(diffs, pixel_color);
                ders = _mm_add_ps(ders, diffs);
                summs = _mm_add_ps(summs, ders);
                _mm_store_ps(buf_ptr.as_mut_ptr().cast(), pixel_color);
            }
        }
    }
}