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
|
kernel void kernel_upscale(
global const void * p_src0,
ulong off_src0,
global void * p_dst,
ulong off_dst,
ulong nb00,
ulong nb01,
ulong nb02,
ulong nb03,
int ne10,
int ne11,
int ne12,
int ne13,
float sf0,
float sf1,
float sf2,
float sf3
) {
global const char * src_base = (global const char *)p_src0 + off_src0;
global float * dst_base = (global float *)((global char *)p_dst + off_dst);
int index = get_global_id(0);
int dst_total_elements = ne10 * ne11 * ne12 * ne13;
if (index >= dst_total_elements) {
return;
}
int i10 = index % ne10;
int i11 = (index / ne10) % ne11;
int i12 = (index / (ne10 * ne11)) % ne12;
int i13 = index / (ne10 * ne11 * ne12);
int i00 = (int)(i10 / sf0);
int i01 = (int)(i11 / sf1);
int i02 = (int)(i12 / sf2);
int i03 = (int)(i13 / sf3);
ulong offset_src_element = (ulong)i03 * nb03 + (ulong)i02 * nb02 + (ulong)i01 * nb01 + (ulong)i00 * nb00;
global const float * src_element_ptr = (global const float *)(src_base + offset_src_element);
dst_base[index] = *src_element_ptr;
}
kernel void kernel_upscale_bilinear(
global const void * p_src0,
ulong off_src0,
global void * p_dst,
ulong off_dst,
ulong nb00,
ulong nb01,
ulong nb02,
ulong nb03,
int ne00_src,
int ne01_src,
int ne10_dst,
int ne11_dst,
int ne12_dst,
int ne13_dst,
float sf0,
float sf1,
float sf2,
float sf3,
float pixel_offset
) {
global const char * src_base = (global const char *)p_src0 + off_src0;
global float * dst_base = (global float *)((global char *)p_dst + off_dst);
int index = get_global_id(0);
int dst_total_elements = ne10_dst * ne11_dst * ne12_dst * ne13_dst;
if (index >= dst_total_elements) {
return;
}
int i10_dst = index % ne10_dst;
int i11_dst = (index / ne10_dst) % ne11_dst;
int i12_dst = (index / (ne10_dst * ne11_dst)) % ne12_dst;
int i13_dst = index / (ne10_dst * ne11_dst * ne12_dst);
int i02_src = (int)(i12_dst / sf2);
int i03_src = (int)(i13_dst / sf3);
float y_src_f = ((float)i11_dst + pixel_offset) / sf1 - pixel_offset;
long y0_src = (long)floor(y_src_f);
long y1_src = y0_src + 1;
y0_src = max(0L, min(y0_src, (long)ne01_src - 1));
y1_src = max(0L, min(y1_src, (long)ne01_src - 1));
float dy = y_src_f - (float)y0_src;
dy = max(0.0f, min(dy, 1.0f));
float x_src_f = ((float)i10_dst + pixel_offset) / sf0 - pixel_offset;
long x0_src = (long)floor(x_src_f);
long x1_src = x0_src + 1;
x0_src = max(0L, min(x0_src, (long)ne00_src - 1));
x1_src = max(0L, min(x1_src, (long)ne00_src - 1));
float dx = x_src_f - (float)x0_src;
dx = max(0.0f, min(dx, 1.0f));
global const float * p_a = (global const float *)(src_base + (ulong)x0_src * nb00 + (ulong)y0_src * nb01 + (ulong)i02_src * nb02 + (ulong)i03_src * nb03);
global const float * p_b = (global const float *)(src_base + (ulong)x1_src * nb00 + (ulong)y0_src * nb01 + (ulong)i02_src * nb02 + (ulong)i03_src * nb03);
global const float * p_c = (global const float *)(src_base + (ulong)x0_src * nb00 + (ulong)y1_src * nb01 + (ulong)i02_src * nb02 + (ulong)i03_src * nb03);
global const float * p_d = (global const float *)(src_base + (ulong)x1_src * nb00 + (ulong)y1_src * nb01 + (ulong)i02_src * nb02 + (ulong)i03_src * nb03);
const float val_a = *p_a;
const float val_b = *p_b;
const float val_c = *p_c;
const float val_d = *p_d;
float result = val_a * (1.0f - dx) * (1.0f - dy) +
val_b * dx * (1.0f - dy) +
val_c * (1.0f - dx) * dy +
val_d * dx * dy;
dst_base[index] = result;
}
|
