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/* GIMP - The GNU Image Manipulation Program
* Copyright (C) 1995 Spencer Kimball and Peter Mattis
*
* gimpoperationlayermode-composite-sse2.c
* Copyright (C) 2017 Michael Natterer <mitch@gimp.org>
* 2017 Øyvind Kolås <pippin@gimp.org>
* 2017 Ell
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <https://www.gnu.org/licenses/>.
*/
#include "config.h"
#include <gegl-plugin.h>
#include <cairo.h>
#include <gdk-pixbuf/gdk-pixbuf.h>
#include "../operations-types.h"
#include "gimpoperationlayermode-composite.h"
#if COMPILE_SSE2_INTRINISICS
/* SSE2 */
#include <emmintrin.h>
/* non-subtractive compositing functions. these functions expect comp[ALPHA]
* to be the same as layer[ALPHA]. when in[ALPHA] or layer[ALPHA] are zero,
* the value of comp[RED..BLUE] is unconstrained (in particular, it may be
* NaN).
*/
void
gimp_operation_layer_mode_composite_clip_to_backdrop_sse2 (const gfloat *in,
const gfloat *layer,
const gfloat *comp,
const gfloat *mask,
gfloat opacity,
gfloat *out,
gint samples)
{
if ((((uintptr_t)in) | /* alignment check */
((uintptr_t)comp) |
((uintptr_t)out) ) & 0x0F)
{
gimp_operation_layer_mode_composite_clip_to_backdrop (in, layer, comp,
mask, opacity, out,
samples);
}
else
{
const __v4sf *v_in = (const __v4sf*) in;
const __v4sf *v_comp = (const __v4sf*) comp;
__v4sf *v_out = (__v4sf*) out;
const __v4sf v_one = _mm_set1_ps (1.0f);
const __v4sf v_opacity = _mm_set1_ps (opacity);
while (samples--)
{
__v4sf alpha, rgba_in, rgba_comp;
rgba_in = *v_in ++;
rgba_comp = *v_comp++;
alpha = (__v4sf)_mm_shuffle_epi32((__m128i)rgba_comp,_MM_SHUFFLE(3,3,3,3)) * v_opacity;
if (mask)
{
alpha = alpha * _mm_set1_ps (*mask++);
}
if (rgba_in[ALPHA] != 0.0f && _mm_ucomineq_ss (alpha, _mm_setzero_ps ()))
{
__v4sf out_pixel, out_pixel_rbaa, out_alpha;
out_alpha = (__v4sf)_mm_shuffle_epi32((__m128i)rgba_in,_MM_SHUFFLE(3,3,3,3));
out_pixel = rgba_comp * alpha + rgba_in * (v_one - alpha);
out_pixel_rbaa = _mm_shuffle_ps (out_pixel, out_alpha, _MM_SHUFFLE (3, 3, 2, 0));
out_pixel = _mm_shuffle_ps (out_pixel, out_pixel_rbaa, _MM_SHUFFLE (2, 1, 1, 0));
*v_out++ = out_pixel;
}
else
{
*v_out ++ = rgba_in;
}
}
}
}
#endif /* COMPILE_SSE2_INTRINISICS */
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