132 lines
4.1 KiB
C
132 lines
4.1 KiB
C
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/* PIKA - Photo and Image Kooker Application
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* a rebranding of The GNU Image Manipulation Program (created with heckimp)
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* A derived work which may be trivial. However, any changes may be (C)2023 by Aldercone Studio
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*
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* Original copyright, applying to most contents (license remains unchanged):
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* Copyright (C) 1995 Spencer Kimball and Peter Mattis
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*
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* pika-gegl-loops-sse2.c
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* Copyright (C) 2012 Michael Natterer <mitch@gimp.org>
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <https://www.gnu.org/licenses/>.
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*/
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#include "config.h"
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#include <string.h>
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#include <cairo.h>
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#include <gdk-pixbuf/gdk-pixbuf.h>
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#include <gegl.h>
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#include "pika-gegl-types.h"
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#include "pika-gegl-loops-sse2.h"
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#if COMPILE_SSE2_INTRINISICS
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#include <emmintrin.h>
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/* helper function of pika_gegl_smudge_with_paint_process_sse2()
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* src and dest can be the same address
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*/
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static inline void
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pika_gegl_smudge_with_paint_blend_sse2 (const gfloat *src1,
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gfloat src1_rate,
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const gfloat *src2,
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gfloat src2_rate,
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gfloat *dest,
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gboolean no_erasing_src2)
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{
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/* 2017/4/13 shark0r : According to my test, SSE decreases about 25%
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* execution time
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*/
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__m128 v_src1 = _mm_loadu_ps (src1);
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__m128 v_src2 = _mm_loadu_ps (src2);
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__m128 *v_dest = (__v4sf *) dest;
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gfloat orginal_src2_alpha;
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gfloat src1_alpha;
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gfloat src2_alpha;
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gfloat result_alpha;
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orginal_src2_alpha = v_src2[3];
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src1_alpha = src1_rate * v_src1[3];
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src2_alpha = src2_rate * orginal_src2_alpha;
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result_alpha = src1_alpha + src2_alpha;
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if (result_alpha == 0)
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{
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*v_dest = _mm_set1_ps (0);
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return;
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}
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*v_dest = (v_src1 * _mm_set1_ps (src1_alpha) +
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v_src2 * _mm_set1_ps (src2_alpha)) /
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_mm_set1_ps (result_alpha);
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if (no_erasing_src2)
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{
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result_alpha = MAX (result_alpha, orginal_src2_alpha);
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}
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dest[3] = result_alpha;
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}
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/* helper function of pika_gegl_smudge_with_paint()
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*
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* note that it's the caller's responsibility to verify that the buffers are
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* properly aligned
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*/
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void
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pika_gegl_smudge_with_paint_process_sse2 (gfloat *accum,
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const gfloat *canvas,
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gfloat *paint,
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gint count,
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const gfloat *brush_color,
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gfloat brush_a,
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gboolean no_erasing,
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gfloat flow,
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gfloat rate)
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{
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while (count--)
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{
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/* blend accum_buffer and canvas_buffer to accum_buffer */
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pika_gegl_smudge_with_paint_blend_sse2 (accum, rate, canvas, 1 - rate,
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accum, no_erasing);
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/* blend accum_buffer and brush color/pixmap to paint_buffer */
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if (brush_a == 0) /* pure smudge */
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{
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memcpy (paint, accum, sizeof (gfloat) * 4);
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}
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else
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{
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const gfloat *src1 = brush_color ? brush_color : paint;
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pika_gegl_smudge_with_paint_blend_sse2 (src1, flow, accum, 1 - flow,
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paint, no_erasing);
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}
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accum += 4;
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canvas += 4;
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paint += 4;
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}
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}
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#endif /* COMPILE_SSE2_INTRINISICS */
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