mirror of https://github.com/GNOME/gimp.git
117 lines
3.9 KiB
C
117 lines
3.9 KiB
C
/* GIMP - The GNU Image Manipulation Program
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* Copyright (C) 1995 Spencer Kimball and Peter Mattis
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*
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* gimpoperationnormalmode-sse2.c
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* Copyright (C) 2013 Daniel Sabo
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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 <http://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 "operations-types.h"
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#include "gimpoperationnormalmode.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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gboolean
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gimp_operation_normal_mode_process_pixels_sse2 (gfloat *in,
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gfloat *aux,
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gfloat *mask,
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gfloat *out,
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gfloat opacity,
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glong samples,
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const GeglRectangle *roi,
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gint level)
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{
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/* check alignment */
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if ((((uintptr_t)in) | ((uintptr_t)aux) | ((uintptr_t)out)) & 0x0F)
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{
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return gimp_operation_normal_mode_process_pixels_core (in, aux, mask, out,
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opacity, samples,
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roi, level);
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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_aux = (const __v4sf*) aux;
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__v4sf *v_out = ( __v4sf*) out;
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const __v4sf 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 rgba_in, rgba_aux, alpha;
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rgba_in = *v_in++;
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rgba_aux = *v_aux++;
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/* expand alpha */
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alpha = (__v4sf)_mm_shuffle_epi32 ((__m128i)rgba_aux,
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_MM_SHUFFLE (3, 3, 3, 3));
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if (mask)
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{
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__v4sf mask_alpha;
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/* multiply aux's alpha by the mask */
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mask_alpha = _mm_set1_ps (*mask++);
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alpha = alpha * mask_alpha;
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}
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alpha = alpha * v_opacity;
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if (_mm_ucomigt_ss (alpha, _mm_setzero_ps ()))
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{
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__v4sf dst_alpha, a_term, out_pixel, out_alpha, out_pixel_rbaa;
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/* expand alpha */
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dst_alpha = (__v4sf)_mm_shuffle_epi32 ((__m128i)rgba_in,
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_MM_SHUFFLE (3, 3, 3, 3));
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/* a_term = dst_a * (1.0 - src_a) */
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a_term = dst_alpha * (one - alpha);
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/* out(color) = src * src_a + dst * a_term */
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out_pixel = rgba_aux * alpha + rgba_in * a_term;
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/* out(alpha) = 1.0 * src_a + 1.0 * a_term */
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out_alpha = alpha + a_term;
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/* un-premultiply */
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out_pixel = out_pixel / out_alpha;
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/* swap in the real 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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return TRUE;
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}
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#endif /* COMPILE_SSE2_INTRINISICS */
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