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
|
/* GIMP - The GNU Image Manipulation Program
* Copyright (C) 1995 Spencer Kimball and Peter Mattis
*
* gimp-gegl-loops-sse2.c
* Copyright (C) 2012 Michael Natterer <mitch@gimp.org>
*
* 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 <string.h>
#include <cairo.h>
#include <gdk-pixbuf/gdk-pixbuf.h>
#include <gegl.h>
#include "gimp-gegl-types.h"
#include "gimp-gegl-loops-sse2.h"
#if COMPILE_SSE2_INTRINISICS
#include <emmintrin.h>
/* helper function of gimp_gegl_smudge_with_paint_process_sse2()
* src and dest can be the same address
*/
static inline void
gimp_gegl_smudge_with_paint_blend_sse2 (const gfloat *src1,
gfloat src1_rate,
const gfloat *src2,
gfloat src2_rate,
gfloat *dest,
gboolean no_erasing_src2)
{
/* 2017/4/13 shark0r : According to my test, SSE decreases about 25%
* execution time
*/
__m128 v_src1 = _mm_loadu_ps (src1);
__m128 v_src2 = _mm_loadu_ps (src2);
__m128 *v_dest = (__v4sf *) dest;
gfloat orginal_src2_alpha;
gfloat src1_alpha;
gfloat src2_alpha;
gfloat result_alpha;
orginal_src2_alpha = v_src2[3];
src1_alpha = src1_rate * v_src1[3];
src2_alpha = src2_rate * orginal_src2_alpha;
result_alpha = src1_alpha + src2_alpha;
if (result_alpha == 0)
{
*v_dest = _mm_set1_ps (0);
return;
}
*v_dest = (v_src1 * _mm_set1_ps (src1_alpha) +
v_src2 * _mm_set1_ps (src2_alpha)) /
_mm_set1_ps (result_alpha);
if (no_erasing_src2)
{
result_alpha = MAX (result_alpha, orginal_src2_alpha);
}
dest[3] = result_alpha;
}
/* helper function of gimp_gegl_smudge_with_paint()
*
* note that it's the caller's responsibility to verify that the buffers are
* properly aligned
*/
void
gimp_gegl_smudge_with_paint_process_sse2 (gfloat *accum,
const gfloat *canvas,
gfloat *paint,
gint count,
const gfloat *brush_color,
gfloat brush_a,
gboolean no_erasing,
gfloat flow,
gfloat rate)
{
while (count--)
{
/* blend accum_buffer and canvas_buffer to accum_buffer */
gimp_gegl_smudge_with_paint_blend_sse2 (accum, rate, canvas, 1 - rate,
accum, no_erasing);
/* blend accum_buffer and brush color/pixmap to paint_buffer */
if (brush_a == 0) /* pure smudge */
{
memcpy (paint, accum, sizeof (gfloat) * 4);
}
else
{
const gfloat *src1 = brush_color ? brush_color : paint;
gimp_gegl_smudge_with_paint_blend_sse2 (src1, flow, accum, 1 - flow,
paint, no_erasing);
}
accum += 4;
canvas += 4;
paint += 4;
}
}
#endif /* COMPILE_SSE2_INTRINISICS */
|
