summaryrefslogtreecommitdiffstats
path: root/app/operations/layer-modes/gimpoperationnormal-sse4.c
blob: ba621a261ec9162a77c363a525872d5a998ff468 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
/* GIMP - The GNU Image Manipulation Program
 * Copyright (C) 1995 Spencer Kimball and Peter Mattis
 *
 * gimpoperationnormalmode-sse2.c
 * Copyright (C) 2013 Daniel Sabo
 *
 * 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 "operations/operations-types.h"

#include "gimpoperationnormal.h"


#if COMPILE_SSE4_1_INTRINISICS

/* SSE4 */
#include <smmintrin.h>


gboolean
gimp_operation_normal_process_sse4 (GeglOperation       *op,
                                    void                *in_p,
                                    void                *layer_p,
                                    void                *mask_p,
                                    void                *out_p,
                                    glong                samples,
                                    const GeglRectangle *roi,
                                    gint                 level)
{
  /* check alignment */
  if ((((uintptr_t)in_p) | ((uintptr_t)layer_p) | ((uintptr_t)out_p)) & 0x0F)
    {
      return gimp_operation_normal_process (op,
                                            in_p, layer_p, mask_p, out_p,
                                            samples, roi, level);
    }
  else
    {
      GimpOperationLayerMode *layer_mode      = (gpointer) op;
      gfloat                  opacity         = layer_mode->opacity;
      gfloat                 *mask            = mask_p;
      const                   __v4sf *v_in    = (const __v4sf*) in_p;
      const                   __v4sf *v_layer = (const __v4sf*) layer_p;
                              __v4sf *v_out   = (      __v4sf*) out_p;

      const __v4sf one       = _mm_set1_ps (1.0f);
      const __v4sf v_opacity = _mm_set1_ps (opacity);

      switch (layer_mode->composite_mode)
        {
        case GIMP_LAYER_COMPOSITE_UNION:
        case GIMP_LAYER_COMPOSITE_AUTO:
          while (samples--)
            {
              __v4sf rgba_in, rgba_layer, alpha;

              rgba_in    = *v_in++;
              rgba_layer = *v_layer++;

              /* expand alpha */
              alpha = (__v4sf)_mm_shuffle_epi32 ((__m128i)rgba_layer,
                                                 _MM_SHUFFLE (3, 3, 3, 3));

              if (mask)
                {
                  __v4sf mask_alpha;

                  /* multiply layer's alpha by the mask */
                  mask_alpha = _mm_set1_ps (*mask++);
                  alpha = alpha * mask_alpha;
                }

              alpha = alpha * v_opacity;

              if (_mm_ucomigt_ss (alpha, _mm_setzero_ps ()))
                {
                  __v4sf dst_alpha, a_term, out_pixel, out_alpha;

                  /* expand alpha */
                  dst_alpha = (__v4sf)_mm_shuffle_epi32 ((__m128i)rgba_in,
                                                         _MM_SHUFFLE (3, 3, 3, 3));

                  /* a_term = dst_a * (1.0 - src_a) */
                  a_term = dst_alpha * (one - alpha);

                  /* out(color) = src * src_a + dst * a_term */
                  out_pixel = rgba_layer * alpha + rgba_in * a_term;

                  /* out(alpha) = 1.0 * src_a + 1.0 * a_term */
                  out_alpha = alpha + a_term;

                  /* un-premultiply */
                  out_pixel = out_pixel / out_alpha;

                  /* swap in the real alpha */
                  out_pixel = _mm_blend_ps (out_pixel, out_alpha, 0x08);

                  *v_out++ = out_pixel;
                }
              else
                {
                  *v_out++ = rgba_in;
                }
            }
          break;

        case GIMP_LAYER_COMPOSITE_CLIP_TO_BACKDROP:
          while (samples--)
            {
              __v4sf rgba_in, rgba_layer, alpha;

              rgba_in    = *v_in++;
              rgba_layer = *v_layer++;

              /* expand alpha */
              alpha = (__v4sf)_mm_shuffle_epi32 ((__m128i)rgba_layer,
                                                 _MM_SHUFFLE (3, 3, 3, 3));

              if (mask)
                {
                  __v4sf mask_alpha;

                  /* multiply layer's alpha by the mask */
                  mask_alpha = _mm_set1_ps (*mask++);
                  alpha = alpha * mask_alpha;
                }

              alpha = alpha * v_opacity;

              if (_mm_ucomigt_ss (alpha, _mm_setzero_ps ()))
                {
                  __v4sf dst_alpha, out_pixel;

                  /* expand alpha */
                  dst_alpha = (__v4sf)_mm_shuffle_epi32 ((__m128i)rgba_in,
                                                         _MM_SHUFFLE (3, 3, 3, 3));

                  /* out(color) = dst * (1 - src_a) + src * src_a */
                  out_pixel = rgba_in + (rgba_layer - rgba_in) * alpha;

                  /* swap in the real alpha */
                  out_pixel = _mm_blend_ps (out_pixel, dst_alpha, 0x08);

                  *v_out++ = out_pixel;
                }
              else
                {
                  *v_out++ = rgba_in;
                }
            }
          break;

        case GIMP_LAYER_COMPOSITE_CLIP_TO_LAYER:
          while (samples--)
            {
              __v4sf rgba_in, rgba_layer, alpha;
              __v4sf out_pixel;

              rgba_in    = *v_in++;
              rgba_layer = *v_layer++;

              /* expand alpha */
              alpha = (__v4sf)_mm_shuffle_epi32 ((__m128i)rgba_layer,
                                                 _MM_SHUFFLE (3, 3, 3, 3));

              if (mask)
                {
                  __v4sf mask_alpha;

                  /* multiply layer's alpha by the mask */
                  mask_alpha = _mm_set1_ps (*mask++);
                  alpha = alpha * mask_alpha;
                }

              alpha = alpha * v_opacity;

              if (_mm_ucomigt_ss (alpha, _mm_setzero_ps ()))
                {
                  /* out(color) = src */
                  out_pixel = rgba_layer;
                }
              else
                {
                  out_pixel = rgba_in;
                }

              /* swap in the real alpha */
              out_pixel = _mm_blend_ps (out_pixel, alpha, 0x08);

              *v_out++ = out_pixel;
            }
          break;

        case GIMP_LAYER_COMPOSITE_INTERSECTION:
          while (samples--)
            {
              __v4sf rgba_in, rgba_layer, alpha;
              __v4sf out_pixel;

              rgba_in    = *v_in++;
              rgba_layer = *v_layer++;

              /* expand alpha */
              alpha = (__v4sf)_mm_shuffle_epi32 ((__m128i)rgba_layer,
                                                 _MM_SHUFFLE (3, 3, 3, 3));

              if (mask)
                {
                  __v4sf mask_alpha;

                  /* multiply layer's alpha by the mask */
                  mask_alpha = _mm_set1_ps (*mask++);
                  alpha = alpha * mask_alpha;
                }

              alpha = alpha * v_opacity;

              /* multiply the alpha by in's alpha */
              alpha *= (__v4sf)_mm_shuffle_epi32 ((__m128i)rgba_in,
                                                  _MM_SHUFFLE (3, 3, 3, 3));

              if (_mm_ucomigt_ss (alpha, _mm_setzero_ps ()))
                {
                  /* out(color) = src */
                  out_pixel = rgba_layer;
                }
              else
                {
                  out_pixel = rgba_in;
                }

              /* swap in the real alpha */
              out_pixel = _mm_blend_ps (out_pixel, alpha, 0x08);

              *v_out++ = out_pixel;
            }
          break;
        }
    }

  return TRUE;
}

#endif /* COMPILE_SSE4_1_INTRINISICS */