110 lines
3.9 KiB
C
110 lines
3.9 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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* pikaoperationlayermode-composite-sse2.c
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* Copyright (C) 2017 Michael Natterer <mitch@gimp.org>
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* 2017 Øyvind Kolås <pippin@gimp.org>
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* 2017 Ell
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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 <gegl-plugin.h>
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#include <cairo.h>
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#include <gdk-pixbuf/gdk-pixbuf.h>
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#include "../operations-types.h"
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#include "pikaoperationlayermode-composite.h"
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#if COMPILE_SSE2_INTRINISICS
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/* SSE2 */
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#include <emmintrin.h>
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/* non-subtractive compositing functions. these functions expect comp[ALPHA]
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* to be the same as layer[ALPHA]. when in[ALPHA] or layer[ALPHA] are zero,
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* the value of comp[RED..BLUE] is unconstrained (in particular, it may be
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* NaN).
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*/
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void
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pika_operation_layer_mode_composite_clip_to_backdrop_sse2 (const gfloat *in,
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const gfloat *layer,
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const gfloat *comp,
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const gfloat *mask,
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gfloat opacity,
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gfloat *out,
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gint samples)
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{
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if ((((uintptr_t)in) | /* alignment check */
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((uintptr_t)comp) |
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((uintptr_t)out) ) & 0x0F)
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{
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pika_operation_layer_mode_composite_clip_to_backdrop (in, layer, comp,
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mask, opacity, out,
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samples);
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}
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else
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{
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const __v4sf *v_in = (const __v4sf*) in;
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const __v4sf *v_comp = (const __v4sf*) comp;
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__v4sf *v_out = (__v4sf*) out;
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const __v4sf v_one = _mm_set1_ps (1.0f);
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const __v4sf v_opacity = _mm_set1_ps (opacity);
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while (samples--)
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{
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__v4sf alpha, rgba_in, rgba_comp;
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rgba_in = *v_in ++;
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rgba_comp = *v_comp++;
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alpha = (__v4sf)_mm_shuffle_epi32((__m128i)rgba_comp,_MM_SHUFFLE(3,3,3,3)) * v_opacity;
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if (mask)
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{
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alpha = alpha * _mm_set1_ps (*mask++);
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}
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if (rgba_in[ALPHA] != 0.0f && _mm_ucomineq_ss (alpha, _mm_setzero_ps ()))
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{
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__v4sf out_pixel, out_pixel_rbaa, out_alpha;
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out_alpha = (__v4sf)_mm_shuffle_epi32((__m128i)rgba_in,_MM_SHUFFLE(3,3,3,3));
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out_pixel = rgba_comp * alpha + rgba_in * (v_one - alpha);
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out_pixel_rbaa = _mm_shuffle_ps (out_pixel, out_alpha, _MM_SHUFFLE (3, 3, 2, 0));
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out_pixel = _mm_shuffle_ps (out_pixel, out_pixel_rbaa, _MM_SHUFFLE (2, 1, 1, 0));
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*v_out++ = out_pixel;
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}
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else
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{
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*v_out ++ = rgba_in;
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}
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}
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}
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}
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#endif /* COMPILE_SSE2_INTRINISICS */
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